Title: £486 Cheap Flights from Helsinki to Seattle (HEL to SEA) - Expedia.co.uk ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £486 Cheap Flights from Helsinki (HEL) to Seattle (SEA) [View £486 flight on Mon, 15 Dec 2025](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:HEL,to:SEA,departure:15/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:485.40&airProductToken=AQqfAQozCMKoARIDMzA4GIdZIJG6ASjI5v8CMITn_wI4UEAAWAFqB0NMQVNTSUNyCFBMVjFFQ0w1CjMIwqgBEgMxNjkYkboBIIopKNns_wIw2O7_AjhQQAFYAWoHQ0xBU1NJQ3IIUExWMUVDTDUKMwjCqAESBDYyODEYiikgkgEo3PD_AjC89P8COFBAAVgBagdDTEFTU0lDcghQTFYxRUNMNRIKCAEQARgBKgJCVBgBIgQIARABKAIoAygEMAE) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Helsinki-Vantaa Airport (HEL) to Seattle-Tacoma International Airport (SEA) - ![Finnair](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AY.svg) Finnair [](https://www.expedia.co.uk/Flights-Search?leg1=from:hel,to:sea,departure:30/09/2025TANYT&leg2=from:sea,to:hel,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AY"}}]) - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:hel,to:sea,departure:30/09/2025TANYT&leg2=from:sea,to:hel,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![Icelandair](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_FI.svg) Icelandair [](https://www.expedia.co.uk/Flights-Search?leg1=from:hel,to:sea,departure:30/09/2025TANYT&leg2=from:sea,to:hel,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"FI"}}]) - ![Lufthansa](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.co.uk/Flights-Search?leg1=from:hel,to:sea,departure:30/09/2025TANYT&leg2=from:sea,to:hel,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![SAS](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_SK.svg) SAS [](https://www.expedia.co.uk/Flights-Search?leg1=from:hel,to:sea,departure:30/09/2025TANYT&leg2=from:sea,to:hel,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SK"}}]) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.co.uk/Flights-Search?leg1=from:hel,to:sea,departure:30/09/2025TANYT&leg2=from:sea,to:hel,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![Turkish Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TK.svg) Turkish Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:hel,to:sea,departure:30/09/2025TANYT&leg2=from:sea,to:hel,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TK"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 25% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Cheap Flights from Helsinki (HEL) to Seattle (SEA) Prices were available within the past 7 days and start at £486 for one-way flights and £678 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, 15 Oct - Thu, 23 Oct HEL Helsinki SEA Seattle £678 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:HEL,to:SEA,departure:15/10/2025TANYT&leg2=from:SEA,to:HEL,departure:23/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:677.70&airProductToken=AQpoCjIIwoIBEgQ2MDUzGIdZIKOxASjfs_oCMNW4-gI4T0AAWAFqBU5PQkFHcghPS04wQzhCVwoyCMKCARIEMjQ5MRijsQEgkgEo37r6AjDgvPoCOE9AAVgBagVOT0JBR3IIT0tOMEM4QlcKaAoyCMKCARIENTU4ORiSASCjsQEolJD7AjCAkvsCOE9AAFgBagVOT0JBR3IIT0xOMEM4QlcKMgjCggESBDYwNTQYo7EBIIdZKL6T-wIwkZj7AjhPQAFYAWoFTk9CQUdyCE9MTjBDOEJXEgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Wed, 15 Oct - Thu, 23 Oct HEL Helsinki SEA Seattle £694 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:HEL,to:SEA,departure:15/10/2025TANYT&leg2=from:SEA,to:HEL,departure:23/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:693.70&airProductToken=AQpqCjMIzJABEgM4NTUYh1kgpQQo3rD6AjD-sfoCOEtAAFgBaghFQ09MSUdIVHIIS01UM0RYQlEKMwjMkAESAzQ5MBilBCCSASits_oCMI-4-gI4S0ABWAFqCEVDT0xJR0hUcghLTVQzRFhCUQpqCjMIzJABEgM0OTEYkgEgpQQooJP7AjDfl_sCOEtAAFgBaghFQ09MSUdIVHIIS01UM0RYQlEKMwjMkAESAzg1MBilBCCHWSjjmfsCMPSa-wI4S0ABWAFqCEVDT0xJR0hUcghLTVQzRFhCURIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Wed, 15 Oct - Thu, 23 Oct HEL Helsinki SEA Seattle £696 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:HEL,to:SEA,departure:15/10/2025TANYT&leg2=from:SEA,to:HEL,departure:23/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:695.20&airProductToken=AQpoCjIIy5gBEgQxMjQ4GIdZIICTASiQsfoCMKuy-gI4TEAAWAFqBUxJR0hUcghSWUs4VEJMQQoyCMuYARIENjAzMxiAkwEgkgEolLP6AjCKuPoCOFJAAVgBagVMSUdIVHIIUllLOFRCTEEKaAoyCMuYARIENjAzMhiSASCAkwEolpP7AjDkl_sCOFJAAFgBagVMSUdIVHIIUllLOFRCTEEKMgjLmAESBDEyNTMYgJMBIIdZKKSa-wIwsJv7AjhMQAFYAWoFTElHSFRyCFJZSzhUQkxBEgoIARABGAEqAktMGAEiBAgBEAEoAigDKAQwAQ) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Wed, 15 Oct - Thu, 23 Oct HEL Helsinki SEA Seattle £698 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:HEL,to:SEA,departure:15/10/2025TANYT&leg2=from:SEA,to:HEL,departure:23/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:697.30&airProductToken=AQqiAQozCMaSARIDMzQzGIdZIIopKPC0-gIwzLb6AjhPQABYAWoIU1RBTkRBUkRyCE9KMlFPQUVDCjQIxpIBEgM2OTcYiikguI0BKKa3-gIw97r6AjhPQAFYAWoIU1RBTkRBUkRyCE9KMlFPQUVDCjUIwaYBEgQyMTAxGLiNASCSASjMwPoCMJPB-gI4R0ABWAFqCFNUQU5EQVJEcghPSjJRT0FFQwqgAQozCMaSARIDNjgwGJIBIIopKPWT-wIwt5f7AjhIQABYAWoIU1RBTkRBUkRyCEhKMlFPQUVDCjMIxpIBEgMzMTgYiikgzlwolpj7AjC7mfsCOEhAAVgBaghTVEFOREFSRHIISEoyUU9BRUMKNAjGkgESBDczMjQYzlwgh1ko3pn7AjCzmvsCOEhAAVgBaghTVEFOREFSRHIISEoyUU9BRUMSCggBEAEYASoCRkkYASIECAEQASgCKAMoBDAB) ![Air France](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AF.gif) Wed, 15 Oct - Thu, 23 Oct HEL Helsinki SEA Seattle £700 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:HEL,to:SEA,departure:15/10/2025TANYT&leg2=from:SEA,to:HEL,departure:23/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:699.70&airProductToken=AQplCjEIwYwBEgQxMTc3GIdZIOIwKPyw-gIwxLL6AjhMQABYAWoFTElHSFRyCFJZSzhUQkxBCjAIwYwBEgMzMzgY4jAgkgEombP6AjDnt_oCOFJAAVgBagVMSUdIVHIIUllLOFRCTEEKaAoyCMGMARIEMzU4NBiSASCAkwEo6JT7AjCxmfsCOFJAAFgBagVMSUdIVHIIUllLOFRCTEEKMgjBjAESBDMxOTkYgJMBIIdZKLSd-wIwwJ77AjhMQAFYAWoFTElHSFRyCFJZSzhUQkxBEgoIARABGAEqAkFGGAEiBAgBEAEoAigDKAQwAQ) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Wed, 15 Oct - Thu, 23 Oct HEL Helsinki SEA Seattle £702 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:HEL,to:SEA,departure:15/10/2025TANYT&leg2=from:SEA,to:HEL,departure:23/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:701.90&airProductToken=AQqiAQozCMaSARIDMzQzGIdZIIopKPC0-gIwzLb6AjhPQABYAWoIU1RBTkRBUkRyCE9KMlFPQUVDCjQIxpIBEgM2OTcYiikguI0BKKa3-gIw97r6AjhPQAFYAWoIU1RBTkRBUkRyCE9KMlFPQUVDCjUIwaYBEgQyMTAxGLiNASCSASjMwPoCMJPB-gI4R0ABWAFqCFNUQU5EQVJEcghPSjJRT0FFQwqgAQozCMaSARIDNjgyGJIBIIopKLiV-wIw9Zj7AjhMQABYAWoIU1RBTkRBUkRyCExKMlFPQUVDCjMIxpIBEgMyMDgYiikg4jsou5n7AjD5mvsCOExAAVgBaghTVEFOREFSRHIITEoyUU9BRUMKNAjGkgESBDczMDEY4jsgh1koxJv7AjCenPsCOExAAVgBaghTVEFOREFSRHIITEoyUU9BRUMSCggBEAEYASoCRkkYASIECAEQASgCKAMoBDAB) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, 15 Oct - Thu, 23 Oct HEL Helsinki SEA Seattle £712 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:HEL,to:SEA,departure:15/10/2025TANYT&leg2=from:SEA,to:HEL,departure:23/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:712.00&airProductToken=AQpoCjIIwoIBEgQ2MDUzGIdZIKOxASjfs_oCMNW4-gI4T0AAWAFqBU5PQkFHcghPS04wQzhCVwoyCMKCARIEMjQ5MRijsQEgkgEo37r6AjDgvPoCOE9AAVgBagVOT0JBR3IIT0tOMEM4QlcKZgowCMKCARICNTIYkgEg64kBKO6S-wIwnpf7AjhOQABYAWoFTk9CQUdyCE5MTjBDOEJXCjIIwoIBEgQ2MDg4GOuJASCHWSi-mPsCMOiZ-wI4TkABWAFqBU5PQkFHcghOTE4wQzhCVxIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, 15 Oct - Thu, 23 Oct HEL Helsinki SEA Seattle £722 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:HEL,to:SEA,departure:15/10/2025TANYT&leg2=from:SEA,to:HEL,departure:23/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:722.00&airProductToken=AQpoCjIIwoIBEgQ2MDUzGIdZIKOxASjfs_oCMNW4-gI4T0AAWAFqBU5PQkFHcghPS04wQzhCVwoyCMKCARIEMjQ5MRijsQEgkgEo37r6AjDgvPoCOE9AAVgBagVOT0JBR3IIT0tOMEM4QlcKmwEKMQjCggESBDQzODIYkgEgrhwow5H7AjDIk_sCOE5AAFgBagVOT0JBR3IITkxOMEM4QlcKMgjCggESBDE1NDMYrhwg64kBKPCT-wIwvJf7AjhOQAFYAWoFTk9CQUdyCE5MTjBDOEJXCjIIwoIBEgQ2MDg4GOuJASCHWSi-mPsCMOiZ-wI4TkABWAFqBU5PQkFHcghOTE4wQzhCVxIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, 15 Oct - Thu, 23 Oct HEL Helsinki SEA Seattle £725 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:HEL,to:SEA,departure:15/10/2025TANYT&leg2=from:SEA,to:HEL,departure:23/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:724.94&airProductToken=AQpmCjIIwoIBEgQ2MDMxGIdZIOuJASjMsfoCMIqz-gI4TkAAWAFqBU5PQkFHcghOS04wQzhCVwowCMKCARICNDkY64kBIJIBKMK2-gIwkLv6AjhOQAFYAWoFTk9CQUdyCE5LTjBDOEJXCmgKMgjCggESBDU1ODkYkgEgo7EBKJSQ-wIwgJL7AjhPQABYAWoFTk9CQUdyCE9MTjBDOEJXCjIIwoIBEgQ2MDU0GKOxASCHWSi-k_sCMJGY-wI4T0ABWAFqBU5PQkFHcghPTE4wQzhCVxIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Wed, 15 Oct - Thu, 23 Oct HEL Helsinki SEA Seattle £737 Return found 1 hour ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:HEL,to:SEA,departure:15/10/2025TANYT&leg2=from:SEA,to:HEL,departure:23/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:736.20&airProductToken=AQpoCjIIy5gBEgQxMjQ4GIdZIICTASiQsfoCMKuy-gI4TEAAWAFqBUxJR0hUcghSWUs4VEJMQQoyCMuYARIENjAzMxiAkwEgkgEolLP6AjCKuPoCOFJAAVgBagVMSUdIVHIIUllLOFRCTEEKnAEKMgjLmAESBDUwMTAYkgEgi7gBKMGS-wIw5pP7AjhSQABYAWoFTElHSFRyCFJZSzhUQkxBCjIIy5gBEgM2MDQYi7gBIICTASi2lPsCMKKZ-wI4UkABWAFqBUxJR0hUcghSWUs4VEJMQQoyCMuYARIEMTI1MxiAkwEgh1kopJr7AjCwm_sCOExAAVgBagVMSUdIVHIIUllLOFRCTEESCggBEAEYASoCS0wYASIECAEQASgCKAMoBDAB) ## Find the cheapest month to fly from Helsinki (HEL) to Seattle (SEA) ### May is typically the cheapest month to fly From £385 - £747 per traveller. Flight from Helsinki to Seattle route information | Origin airport | Vantaa | | --- | --- | | Destination airport | Seattle - Tacoma Intl. | | Return price | £678 | | Distance | 7628 km | ## Compare flights from Helsinki to Seattle easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Helsinki to Seattle. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Vantaa to Seattle - Tacoma Intl..   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from Vantaa (HEL) to Seattle - Tacoma Intl. (SEA) The easiest way to view the best deals on flights from Helsinki to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Vantaa to Seattle - Tacoma Intl. start at just £678 and range up to £847.   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Helsinki and Seattle - booking your flight during October, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Helsinki to Seattle flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Vantaa to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.   ## Frequently asked questions ### How much is a flight from Helsinki-Vantaa Airport to SEA? > Pack your bags, because round-trip flights between HEL and Sea-Tac Airport start from £678. That's based on airfares available within the last 7 days on Expedia for flights departing within the next year. Prices can increase quickly, so book now to nab the best deal. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from HEL to Sea-Tac Airport? > Every air carrier has its own terms and conditions. If you decide to cancel your holiday, visit our [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from HEL to Seattle - Tacoma Intl. Airport (SEA) that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Helsinki-Vantaa Airport to SEA flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from Vantaa Airport (HEL) to Sea-Tac Airport? > Vantaa to SeaTac is around 7,700 kilometres, so be prepared to spend a while in the air. Don't forget to pack all the essentials, from your eye mask to your earphones. Toss in a few snacks to nibble on throughout your trip too. ### Which airlines fly direct from Helsinki Airport to Seattle - Tacoma Intl. Airport (SEA)? > Unfortunately, there are no airlines that fly direct between HEL and SEA. You'll need to book a flight with one or more stops. ### Are Helsinki-Vantaa Airport to SEA flight tickets cheaper when they're purchased at the last minute? > Flight tickets from Helsinki Airport to Seattle - Tacoma Intl. Airport (SEA) are available up to a year prior to departure on Expedia. And although you may score fantastic last-minute deals, it's not something you should count on. Also, booking your flights ahead of time means you'll have more choices — and you can avoid getting stuck in the dreaded middle seat! We're constantly updating our fares to bring you the biggest bargains, so keep checking in for all the latest specials. ## Explore a world of travel with Expedia - Trending Routes - Trending Flights - Top Flights Destinations - Related Airlines - Cheap Flights from Other Airports - Expedia's Latest Trends ### Top Routes from Helsinki - [Helsinki to London (HEL - LCY)](https://expedia.co.uk/lp/flights/hel/lcy/helsinki-to-london) - [Helsinki to Bangkok (HEL - BKK)](https://expedia.co.uk/lp/flights/hel/bkk/helsinki-to-bangkok) - [Helsinki to Milan (HEL - MXP)](https://expedia.co.uk/lp/flights/hel/mxp/helsinki-to-milan) - [Helsinki to Amsterdam (HEL - AMS)](https://expedia.co.uk/lp/flights/hel/ams/helsinki-to-amsterdam) - [Helsinki to Paris (HEL - CDG)](https://expedia.co.uk/lp/flights/hel/cdg/helsinki-to-paris) - [Helsinki to Oslo (HEL - OSL)](https://expedia.co.uk/lp/flights/hel/osl/helsinki-to-oslo) - [Helsinki to Manila (HEL - MNL)](https://expedia.co.uk/lp/flights/hel/mnl/helsinki-to-manila) - [Helsinki to London (HEL - STN)](https://expedia.co.uk/lp/flights/hel/stn/helsinki-to-london) - [Helsinki to Berlin (HEL - BER)](https://expedia.co.uk/lp/flights/hel/ber/helsinki-to-berlin) - [Helsinki to Tokyo (HEL - NRT)](https://expedia.co.uk/lp/flights/hel/nrt/helsinki-to-tokyo) - [Helsinki to Zürich (HEL - ZRH)](https://expedia.co.uk/lp/flights/hel/zrh/helsinki-to-zurich) - [Helsinki to London (HEL - LHR)](https://expedia.co.uk/lp/flights/hel/lhr/helsinki-to-london) ### Top Routes to Seattle - [Newark Liberty Intl. Airport to Seattle (EWR - SEA)](https://expedia.co.uk/lp/flights/ewr/sea/newark-liberty-intl-airport-to-seattle) - [Los Angeles to Seattle (LAX - SEA)](https://expedia.co.uk/lp/flights/lax/sea/los-angeles-to-seattle) - [London to Seattle (LCY - SEA)](https://expedia.co.uk/lp/flights/lcy/sea/london-to-seattle) - [Paris to Seattle (CDG - SEA)](https://expedia.co.uk/lp/flights/cdg/sea/paris-to-seattle) - [Edinburgh to Seattle (EDI - SEA)](https://expedia.co.uk/lp/flights/edi/sea/edinburgh-to-seattle) - [Istanbul to Seattle (IST - SEA)](https://expedia.co.uk/lp/flights/ist/sea/istanbul-to-seattle) - [New York to Seattle (JFK - SEA)](https://expedia.co.uk/lp/flights/jfk/sea/new-york-to-seattle) - [Dublin to Seattle (DUB - SEA)](https://expedia.co.uk/lp/flights/dub/sea/dublin-to-seattle) - [Birmingham to Seattle (BHX - SEA)](https://expedia.co.uk/lp/flights/bhx/sea/birmingham-to-seattle) - [Vancouver to Seattle (YVR - SEA)](https://expedia.co.uk/lp/flights/yvr/sea/vancouver-to-seattle) - [Newcastle to Seattle (NCL - SEA)](https://expedia.co.uk/lp/flights/ncl/sea/newcastle-to-seattle) - [London to Seattle (LHR - SEA)](https://expedia.co.uk/lp/flights/lhr/sea/london-to-seattle) ### Top Routes to Seattle - [Alaska Airlines New York to Seattle](https://expedia.co.uk/lp/flight-routes/alaska-airlines-from-john-f-kennedy-intl-to-seattle-tacoma-intl/as/jfk/sea) - [Aer Lingus Dublin to Seattle](https://expedia.co.uk/lp/flight-routes/aer-lingus-from-dublin-to-seattle-tacoma-intl/ei/dub/sea) ### Top Flight Destinations - [Flights to Las Vegas](https://expedia.co.uk/Cheap-Flights-To-Las-Vegas.d178276.Travel-Guide-Flights) - [Flights to New York](https://expedia.co.uk/Cheap-Flights-To-New-York.d178293.Travel-Guide-Flights) - [Flights to Orlando](https://expedia.co.uk/Cheap-Flights-To-Orlando.d178294.Travel-Guide-Flights) - [Flights to Chicago](https://expedia.co.uk/Cheap-Flights-To-Chicago.d178248.Travel-Guide-Flights) - [Flights to San Diego](https://expedia.co.uk/Cheap-Flights-To-San-Diego.d3073.Travel-Guide-Flights) - [Flights to San Francisco](https://expedia.co.uk/Cheap-Flights-To-San-Francisco.d178305.Travel-Guide-Flights) - [Flights to Los Angeles](https://expedia.co.uk/Cheap-Flights-To-Los-Angeles.d178280.Travel-Guide-Flights) - [Flights to Boston](https://expedia.co.uk/Cheap-Flights-To-Boston.d178239.Travel-Guide-Flights) - [Flights to Miami](https://expedia.co.uk/Cheap-Flights-To-Miami.d178286.Travel-Guide-Flights) - [Flights to Houston](https://expedia.co.uk/Cheap-Flights-To-Houston.d178265.Travel-Guide-Flights) - [Flights to Pigeon Forge](https://expedia.co.uk/Cheap-Flights-To-Pigeon-Forge.d8264.Travel-Guide-Flights) - [Flights to Nashville](https://expedia.co.uk/Cheap-Flights-To-Nashville.d178291.Travel-Guide-Flights) - [Flights to Myrtle Beach](https://expedia.co.uk/Cheap-Flights-To-Myrtle-Beach.d601685.Travel-Guide-Flights) - [Flights to Atlanta](https://expedia.co.uk/Cheap-Flights-To-Atlanta.d178232.Travel-Guide-Flights) - [Flights to San Antonio](https://expedia.co.uk/Cheap-Flights-To-San-Antonio.d178303.Travel-Guide-Flights) - [Flights to Denver](https://expedia.co.uk/Cheap-Flights-To-Denver.d178254.Travel-Guide-Flights) - [Flights to Honolulu](https://expedia.co.uk/Cheap-Flights-To-Honolulu.d1488.Travel-Guide-Flights) - [Flights to Gatlinburg](https://expedia.co.uk/Cheap-Flights-To-Gatlinburg.d7474.Travel-Guide-Flights) - [Flights to Panama City Beach](https://expedia.co.uk/Cheap-Flights-To-Panama-City-Beach.d8021.Travel-Guide-Flights) - [Flights to Atlantic City](https://expedia.co.uk/Cheap-Flights-To-Atlantic-City.d602179.Travel-Guide-Flights) ### Related Airlines - [KLM](https://expedia.co.uk/KLM-Flights.cKL.Travel-Guide-Airlines) - [Lufthansa](https://expedia.co.uk/Lufthansa-Flights.cLH.Travel-Guide-Airlines) - [SAS](https://expedia.co.uk/Scandinavian-Airlines-Flights.cSK.Travel-Guide-Airlines) - [Air France](https://expedia.co.uk/Air-France-Flights.cAF.Travel-Guide-Airlines) - [Finnair](https://expedia.co.uk/Finnair-Flights.cAY.Travel-Guide-Airlines) - [Air Baltic](https://expedia.co.uk/Air-Baltic-Flights.cBT.Travel-Guide-Airlines) - [British Airways](https://expedia.co.uk/British-Airways-Flights.cBA.Travel-Guide-Airlines) - [Norwegian Air International Ltd](https://expedia.co.uk/Norwegian-Air-Sweden-Flights.cD8.Travel-Guide-Airlines) - [Brussels Airlines](https://expedia.co.uk/Brussels-Airlines-Flights.cSN.Travel-Guide-Airlines) - [Ryanair](https://expedia.co.uk/Ryanair-Flights.cFR.Travel-Guide-Airlines) - [Norwegian Air Shuttle](https://expedia.co.uk/Norwegian-Air-Shuttle-Flights.cDY.Travel-Guide-Airlines) - [Turkish Airlines](https://expedia.co.uk/Turkish-Airlines-Flights.cTK.Travel-Guide-Airlines) - [Qatar Airways](https://expedia.co.uk/Qatar-Airways-Flights.cQR.Travel-Guide-Airlines) - [Austrian Airlines](https://expedia.co.uk/Austrian-Airlines-Flights.cOS.Travel-Guide-Airlines) - [LOT-Polish Airlines](https://expedia.co.uk/LOT-Polish-Airlines-Flights.cLO.Travel-Guide-Airlines) - [Cathay Pacific](https://expedia.co.uk/Cathay-Pacific-Flights.cCX.Travel-Guide-Airlines) ### Nearby Airports - [Pirkkala Airport (TMP)](https://expedia.co.uk/lp/airports/tmp/flights-from-pirkkala-airport) - [Turku Airport (TKU)](https://expedia.co.uk/lp/airports/tku/flights-from-turku-airport) - [Lappeenranta Airport (LPP)](https://expedia.co.uk/lp/airports/lpp/flights-from-lappeenranta-airport) - [Jyvaskyla Airport (JYV)](https://expedia.co.uk/lp/airports/jyv/flights-from-jyvaskyla-airport) - [Savonlinna Airport (SVL)](https://expedia.co.uk/lp/airports/svl/flights-from-savonlinna-airport) ### Expedia's Latest Trends Flights - [Cheap Flights from London (LHR) to Boston (BOS)](https://expedia.co.uk/lp/flights/lhr/bos/london-to-boston) - [Cheap Flights from London (LHR) to Cincinnati (CVG)](https://expedia.co.uk/lp/flights/lhr/cvg/london-to-cincinnati) - [Cheap Flights from London (LHR) to Seattle (SEA)](https://expedia.co.uk/lp/flights/lhr/sea/london-to-seattle) - [Cheap Flights from Boston (BOS) to London (LHR)](https://expedia.co.uk/lp/flights/bos/lhr/boston-to-london) - [Cheap Flights from Las Vegas (LAS) to London (LHR)](https://expedia.co.uk/lp/flights/las/lhr/las-vegas-to-london) - [Cheap Flights from London (LHR) to Anchorage (ANC)](https://expedia.co.uk/lp/flights/lhr/anc/london-to-anchorage) - [Cheap Flights from London (LHR) to Philadelphia (PHL)](https://expedia.co.uk/lp/flights/lhr/phl/london-to-philadelphia) - [Cheap Flights from London (LHR) to Columbus (CMH)](https://expedia.co.uk/lp/flights/lhr/cmh/london-to-columbus) - [Cheap Flights from Manchester (MAN) to Boston (BOS)](https://expedia.co.uk/lp/flights/man/bos/manchester-to-boston) - [Cheap Flights from Las Vegas (LAS) to Los Angeles (LAX)](https://expedia.co.uk/lp/flights/las/lax/las-vegas-to-los-angeles) - [Cheap Flights from London (LHR) to Fort Lauderdale (FLL)](https://expedia.co.uk/lp/flights/lhr/fll/london-to-fort-lauderdale) - [Cheap Flights from London (LON) to New York (NYC)](https://expedia.co.uk/lp/flights/lon/nyc/london-to-new-york) - [Cheap Flights from Las Vegas (LAS) to San Francisco (SFO)](https://expedia.co.uk/lp/flights/las/sfo/las-vegas-to-san-francisco) - [Cheap Flights from London (LHR) to Cleveland (CLE)](https://expedia.co.uk/lp/flights/lhr/cle/london-to-cleveland) - [Cheap Flights from London (LHR) to Pittsburgh (PIT)](https://expedia.co.uk/lp/flights/lhr/pit/london-to-pittsburgh) - [Cheap Flights from Toronto (YYZ) to New York (NYC)](https://expedia.co.uk/lp/flights/yyz/nyc/toronto-to-new-york) - [Cheap Flights from Edinburgh (EDI) to Boston (BOS)](https://expedia.co.uk/lp/flights/edi/bos/edinburgh-to-boston) - [Cheap Flights from Manchester (MAN) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/man/las/manchester-to-las-vegas) - [Cheap Flights from Los Angeles (LAX) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/lax/las/los-angeles-to-las-vegas) - [Cheap Flights from Dallas (DFW) to London (LHR)](https://expedia.co.uk/lp/flights/dfw/lhr/dallas-to-london) - [Cheap Flights from Manchester (MAN) to Dallas (DFW)](https://expedia.co.uk/lp/flights/man/dfw/manchester-to-dallas) - [Cheap Flights from San Francisco (SFO) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/sfo/las/san-francisco-to-las-vegas) - [Cheap Flights from New York (JFK) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/jfk/las/new-york-to-las-vegas) - [Cheap Flights from London (LHR) to New York (NYC)](https://expedia.co.uk/lp/flights/lhr/nyc/london-to-new-york) - [Cheap Flights from London (LHR) to San Diego (SAN)](https://expedia.co.uk/lp/flights/lhr/san/london-to-san-diego) - [Cheap Flights from Dublin (DUB) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/dub/las/dublin-to-las-vegas) - [Cheap Flights from Glasgow (GLA) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/gla/las/glasgow-to-las-vegas) - [Cheap Flights from London (LHR) to Las Vegas (LAS)](https://expedia.co.uk/lp/flights/lhr/las/london-to-las-vegas) - [Cheap Flights from Boston (BOS) to New York (JFK)](https://expedia.co.uk/lp/flights/bos/jfk/boston-to-new-york) - [Cheap Flights from London (LHR) to Dallas (DFW)](https://expedia.co.uk/lp/flights/lhr/dfw/london-to-dallas) \*Available to Expedia members. ![](https://a.travel-assets.com/mad-service/footer/bnaBanners/BEX_Footer.jpg) ## Go further with the Expedia app Save on select hotels when you book in the app. Our app deals help you to save on trips so you can travel more and manage it all on the go. Scan the QR code with your device camera and download our app ![QR code to download the app](data:image/png;base64,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)