Title: £276 Cheap Flights from Copenhagen to Seattle (CPH 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://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £276 Cheap Flights from Copenhagen (CPH) to Seattle (SEA) [View £276 flight on Sat, 23 May 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:CPH,to:SEA,departure:23/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:275.20&airProductToken=AQpoCjIIwoIBEgQxNjQ1GOI7IO9ZKPDfjQMw8-ONAzhPQABYAWoFTk9CQUdyCU9MTjVDNUJXUAoyCMKCARIENTQzNxjvWSCSASjr5I0DMOPnjQM4T0ABWAFqBU5PQkFHcglPTE41QzVCV1ASCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) - [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 Kastrup Airport (CPH) to Seattle-Tacoma International Airport (SEA) - ![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:cph,to:sea,departure:11/10/2025TANYT&leg2=from:sea,to:cph,departure:18/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"FI"}}]) - ![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:cph,to:sea,departure:11/10/2025TANYT&leg2=from:sea,to:cph,departure:18/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![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:cph,to:sea,departure:11/10/2025TANYT&leg2=from:sea,to:cph,departure:18/10/2025TANYT&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:cph,to:sea,departure:11/10/2025TANYT&leg2=from:sea,to:cph,departure:18/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![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:cph,to:sea,departure:11/10/2025TANYT&leg2=from:sea,to:cph,departure:18/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![Virgin Atlantic](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_VS.svg) Virgin Atlantic [](https://www.expedia.co.uk/Flights-Search?leg1=from:cph,to:sea,departure:11/10/2025TANYT&leg2=from:sea,to:cph,departure:18/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VS"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.co.uk/Flights-Search?leg1=from:cph,to:sea,departure:11/10/2025TANYT&leg2=from:sea,to:cph,departure:18/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) ![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 Copenhagen (CPH) to Seattle (SEA) Prices were available within the past 7 days and start at £276 for one-way flights and £381 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) Sat, 23 May - Thu, 28 May CPH Copenhagen SEA Seattle £381 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:CPH,to:SEA,departure:23/05/2026TANYT&leg2=from:SEA,to:CPH,departure:28/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:380.80&airProductToken=AQpmCjEIwoIBEgQxNjQ1GOI7IO9ZKPDfjQMw8-ONAzhPQABYAWoFTk9CQUdyCE9MTjdUOEJXCjEIwoIBEgQ1NDM3GO9ZIJIBKOvkjQMw4-eNAzhPQAFYAWoFTk9CQUdyCE9MTjdUOEJXCmUKMAjCggESAjUyGJIBIOuJASiOnI4DML6gjgM4T0AAWAFqBU5PQkFHcghPTE43VDhCVwoxCMKCARIDODIyGOuJASDiOyj3po4DMOqnjgM4T0ABWAFqBU5PQkFHcghPTE43VDhCVxIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, 18 Nov - Wed, 10 Dec CPH Copenhagen SEA Seattle £382 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:CPH,to:SEA,departure:18/11/2025TANYT&leg2=from:SEA,to:CPH,departure:10/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:381.84&airProductToken=AQpoCjIIwYIBEgQ2NzYyGOI7IOuJASilsP0CMKyx_QI4U0AAWAFqBUJBU0lDcghPTE43VDhCVwoyCMGCARIENjkxMBjriQEgkgEolbL9AjDytv0COE9AAVgBagVCQVNJQ3IIT0xON1Q4QlcKmQEKMQjBggESBDI0NDIYkgEgrhwonK3_AjCXr_8COEJAAFgBagVCQVNJQ3IIT0xON1Q4QjQKMAjBggESAjg2GK4cIOuJASjjsP8CMK-0_wI4QkABWAFqBUJBU0lDcghPTE43VDhCNAoyCMGCARIENzA5ORjriQEg4jso6LX_AjDgtv8COE9AAVgBagVCQVNJQ3IIT0xON1Q4QjQSCggCEAEYAioCQUEYASIECAEQASgCKAMoBDAL) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, 18 Nov - Wed, 10 Dec CPH Copenhagen SEA Seattle £384 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:CPH,to:SEA,departure:18/11/2025TANYT&leg2=from:SEA,to:CPH,departure:10/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:383.64&airProductToken=AQplCjEIwoIBEgM4MDkY4jsg64kBKJKz_QIwlLT9AjhPQABYAWoFTk9CQUdyCE9MTjdUOEJXCjAIwoIBEgI0ORjriQEgkgEo37T9AjC3uf0COE9AAVgBagVOT0JBR3IIT0xON1Q4QlcKmQEKMQjCggESBDQzODIYkgEgrhwonK3_AjCXr_8COE9AAFgBagVOT0JBR3IIT0xON1Q4QlcKMQjCggESAzI5NBiuHCDriQEojrD_AjDfs_8COE9AAVgBagVOT0JBR3IIT0xON1Q4QlcKMQjCggESAzgxMBjriQEg4jso8LT_AjDjtf8COE9AAVgBagVOT0JBR3IIT0xON1Q4QlcSCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Sat, 23 May - Thu, 28 May CPH Copenhagen SEA Seattle £385 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:CPH,to:SEA,departure:23/05/2026TANYT&leg2=from:SEA,to:CPH,departure:28/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:384.74&airProductToken=AQplCjEIwoIBEgM4MjMY4jsg64kBKP7cjQMwgN6NAzhPQABYAWoFTk9CQUdyCE9MTjdUOEJXCjAIwoIBEgI0ORjriQEgkgEowuGNAzCQ5o0DOE9AAVgBagVOT0JBR3IIT0xON1Q4QlcKZQowCMKCARICNTIYkgEg64kBKI6cjgMwvqCOAzhPQABYAWoFTk9CQUdyCE9MTjdUOEJXCjEIwoIBEgM4MTQY64kBIOI7KKmijgMwnKOOAzhPQAFYAWoFTk9CQUdyCE9MTjdUOEJXEgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Thu, 15 Jan - Wed, 21 Jan CPH Copenhagen SEA Seattle £386 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:CPH,to:SEA,departure:15/01/2026TANYT&leg2=from:SEA,to:CPH,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:385.74&airProductToken=AQplCjEIwoIBEgM4MTUY4jsg64kBKLDCggMwrcOCAzhPQABYAWoFTk9CQUdyCE9MTjdUOEJXCjAIwoIBEgI1MxjriQEgkgEo9cmCAzDSzoIDOE9AAVgBagVOT0JBR3IIT0xON1Q4QlcKnAEKMgjCggESBDU1ODkYkgEgo7EBKJCFgwMwgYeDAzhPQABYAWoFTk9CQUdyCE9MTjdUOEJXCjMIwoIBEgQxNTA1GKOxASDriQEo-YeDAzCajIMDOE9AAVgBagVOT0JBR3IIT0xON1Q4QlcKMQjCggESAzgwOBjriQEg4jso-YyDAzDsjYMDOE9AAVgBagVOT0JBR3IIT0xON1Q4QlcSCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Thu, 15 Jan - Wed, 21 Jan CPH Copenhagen SEA Seattle £387 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:CPH,to:SEA,departure:15/01/2026TANYT&leg2=from:SEA,to:CPH,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:386.60&airProductToken=AQpkCjAIxpIBEgMyMTMY4jsgiikoxsOCAzCYxYIDOE5AAFgBagVMSUdIVHIITlUyTURLTFQKMAjGkgESAzY4MRiKKSCSASi8zYIDMJzRggM4TkABWAFqBUxJR0hUcghOVTJNREtMVApkCjAIxpIBEgM2ODAYkgEgiikoq4iDAzD3i4MDOE5AAFgBagVMSUdIVHIITlUyTURLTFQKMAjGkgESAzIxMhiKKSDiOyiskIMDMOqRgwM4TkABWAFqBUxJR0hUcghOVTJNREtMVBIKCAEQARgBKgJGSRgBIgQIARABKAIoAygEMAE) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, 18 Nov - Wed, 10 Dec CPH Copenhagen SEA Seattle £388 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:CPH,to:SEA,departure:18/11/2025TANYT&leg2=from:SEA,to:CPH,departure:10/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:387.84&airProductToken=AQqZAQoxCMKCARIDODA5GOI7IOuJASiSs_0CMJS0_QI4T0AAWAFqBU5PQkFHcghPTE43VDhCVwoxCMKCARIDMjk3GOuJASCuHCiRtf0CMK25_QI4T0ABWAFqBU5PQkFHcghPTE43VDhCVwoxCMKCARIENTc2NxiuHCCSASiWuv0CMLa8_QI4T0ABWAFqBU5PQkFHcghPTE43VDhCVwqZAQoxCMKCARIENDM4MhiSASCuHCicrf8CMJev_wI4T0AAWAFqBU5PQkFHcghPTE43VDhCVwoxCMKCARIDMjk0GK4cIOuJASiOsP8CMN-z_wI4T0ABWAFqBU5PQkFHcghPTE43VDhCVwoxCMKCARIDODEwGOuJASDiOyjwtP8CMOO1_wI4T0ABWAFqBU5PQkFHcghPTE43VDhCVxIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, 10 Dec - Tue, 6 Jan CPH Copenhagen SEA Seattle £389 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:CPH,to:SEA,departure:10/12/2025TANYT&leg2=from:SEA,to:CPH,departure:06/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:388.84&airProductToken=AQqbAQoxCMKCARIDODA5GOI7IOuJASjDqv8CMMWr_wI4T0AAWAFqBU5PQkFHcghPTE43VDhCVwoyCMKCARIDMTkzGOuJASCjsQEopKz_AjCGsf8COE9AAVgBagVOT0JBR3IIT0xON1Q4QlcKMgjCggESBDU1NDEYo7EBIJIBKICy_wIwirT_AjhPQAFYAWoFTk9CQUdyCE9MTjdUOEJXCmUKMAjCggESAjUyGJIBIOuJASiF34EDMMTjgQM4T0AAWAFqBU5PQkFHcghPS043VDhCVwoxCMKCARIDODE2GOuJASDiOyjg54EDMNjogQM4T0ABWAFqBU5PQkFHcghPS043VDhCVxIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Tue, 23 Dec - Tue, 6 Jan CPH Copenhagen SEA Seattle £445 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:CPH,to:SEA,departure:23/12/2025TANYT&leg2=from:SEA,to:CPH,departure:06/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:444.40&airProductToken=AQpqCjMIzJABEgM4MzMY4jsgpQQonrqAAzD4uoADOEtAAFgBaghFQ09MSUdIVHIIS01UM0RYQlEKMwjMkAESAzQ5MBilBCCSASjwu4ADMPrAgAM4S0ABWAFqCEVDT0xJR0hUcghLTVQzRFhCUQpqCjMIzJABEgM0OTEYkgEgpQQoqN-BAzCK5IEDOEtAAFgBaghFQ09MSUdIVHIIS01UM0RYQlEKMwjMkAESAzgyOBilBCDiOyi-5YEDMJPmgQM4S0ABWAFqCEVDT0xJR0hUcghLTVQzRFhCURIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Thu, 15 Jan - Wed, 21 Jan CPH Copenhagen SEA Seattle £453 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:CPH,to:SEA,departure:15/01/2026TANYT&leg2=from:SEA,to:CPH,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:452.20&airProductToken=AQqZAQoxCMGGARIEOTM4NBjiOyClBCiNvYIDMOe9ggM4S0AAWAFqBUJBU0lDcghLTVQzRFhCUQoxCMGGARIDODQxGKUEIJjOASjBvoIDMN3CggM4S0ABWAFqBUJBU0lDcghLTVQzRFhCUQoxCMGGARIDNTQzGJjOASCSASjyxYIDMLjIggM4S0ABWAFqBUJBU0lDcghLTVQzRFhCUQqbAQoyCMGGARIEODgwMxiSASC4jQEonYaDAzDehoMDOEtAAFgBagVCQVNJQ3IIS01UM0RYQlEKMgjBhgESBDkxMDAYuI0BIKUEKP6HgwMw24yDAzhLQAFYAWoFQkFTSUNyCEtNVDNEWEJRCjEIwYYBEgQ5MTMxGKUEIOI7KLCNgwMwhY6DAzhLQAFYAWoFQkFTSUNyCEtNVDNEWEJREgoIAhABGAIqAkFDGAEiBAgBEAEoAigDKAQwAQ) ## Find the cheapest month to fly from Copenhagen (CPH) to Seattle (SEA) ### January is typically the cheapest month to fly From £316 - £835 per traveller. ## Alternative airports near Seattle Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.co.uk/Flights-Search?leg1=from:CPH,to:SEA,departure:11/10/2025TANYT&leg2=from:SEA,to:CPH,departure:18/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) SEA Seattle - Tacoma Intl. Cheapest 20 min [Flights from £608](https://www.expedia.co.uk/Flights-Search?leg1=from:CPH,to:SEA,departure:11/10/2025TANYT&leg2=from:SEA,to:CPH,departure:18/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Frequently asked questions ### How much is a flight from CPH to SEA? > Start packing your bags, because round-trip journeys from CPH to Sea-Tac Airport start from £381. That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book now to secure 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 CPH to Sea-Tac Airport? > Most flights can be cancelled online, but whether you incur a fee differs between airlines. If you do need to cancel your break, follow the easy instructions in the [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from Kastrup Airport (CPH) to Sea-Tac Airport 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 Kastrup Airport (CPH) to SEA flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from Kastrup Airport (CPH) to Seattle - Tacoma Intl. Airport (SEA)? > The distance is around 7,800 kilometres. Sleep mask? Check. Warm clothes? Double check. You'd be wise to pack all the travel comforts for this long-haul Kastrup to SeaTac flight. ### Which airlines fly direct from CPH to Seattle - Tacoma Intl. Airport (SEA)? > There are no direct flights, so you'll need to make at least one stop between Kastrup Airport (CPH) and Seattle - Tacoma Intl. Airport (SEA). Use the layover time to stretch your legs and grab a bite to eat. ### Are Copenhagen Airport, Kastrup to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute? > It is possible to pick up an awesome last-minute deal from CPH to SEA, but it's also possible to miss out entirely! As many airlines advertise prices up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to book when you see a good bargain. Expedia compares carrier prices and updates flight deals all the time, so you can be sure you're always seeing the latest offers. ## Travel information | Origin airport | Kastrup | | --- | --- | | Destination airport | Seattle - Tacoma Intl. | | Airlines serving | Air Canada, Air France, British Airways, Finnair, Icelandair, KLM, Scandinavian Airlines, Singapore Airlines, Turkish Airlines, Virgin Atlantic | | Return price | £381 | | Distance | 7763 km | | Average flight time | 9 hours 50 mins | ## Book with confidence ### Compare flights from Copenhagen to Seattle easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Copenhagen 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 Kastrup 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 Kastrup (CPH) to Seattle - Tacoma Intl. (SEA) The easiest way to view the best deals on flights from Copenhagen 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 Kastrup to Seattle - Tacoma Intl. start at just £381 and range up to £1,076.   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Copenhagen and Seattle - booking your flight during May, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Copenhagen to Seattle flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Kastrup 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. 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