Title: £111 Cheap Flights from Missoula to Seattle (MSO 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) # £111 Cheap Flights from Missoula (MSO) to Seattle (SEA) [View £111 flight on Sun, 5 Oct 2025](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:MSO,to:SEA,departure:05/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:110.20&airProductToken=AQowCi4IwaYBEgQyMTM2GMx0IJIBKNXE-QIwtcX5AjhYQABYAWoCU1ZyCE5IMk9BU0JOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) - [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 Missoula Intl. Airport (MSO) to Seattle-Tacoma International Airport (SEA) - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:mso,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:mso,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![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:mso,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:mso,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.co.uk/Flights-Search?leg1=from:mso,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:mso,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Hawaiian Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_HA.svg) Hawaiian Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:mso,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:mso,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"HA"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:mso,to:sea,departure:29/09/2025TANYT&leg2=from:sea,to:mso,departure:06/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) ![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 Missoula (MSO) to Seattle (SEA) Prices were available within the past 7 days and start at £111 for one-way flights and £169 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Fri, 27 Feb - Sat, 7 Mar MSO Missoula SEA Seattle £169 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:MSO,to:SEA,departure:27/02/2026TANYT&leg2=from:SEA,to:MSO,departure:07/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:168.80&airProductToken=AQowCi4IwaYBEgQyMTYwGMx0IJIBKPqphgMw2KqGAzhYQABYAWoCU1ZyCFFIMkVBVUJOCi8KLQjBpgESAzY2MBiSASDMdCiNgYcDMOSBhwM4WEAAWAFqAlNWcghOSDJFQVNCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Fri, 27 Feb - Sat, 7 Mar MSO Missoula SEA Seattle £205 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:MSO,to:SEA,departure:27/02/2026TANYT&leg2=from:SEA,to:MSO,departure:07/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:205.00&airProductToken=AQovCi0IwaYBEgM2NjAYzHQgkgEoj6iGAzDsqIYDOFhAAFgBagJTVnIIUUgyT0FVQk4KYgovCMGmARIEMjE5MxiSASDvuAEo_P-GAzCtgIcDOFhAAFgBagJTVnIIUUgyT0FTQk4KLwjBpgESBDIxNDYY77gBIMx0KOWAhwMwuYGHAzhYQAFYAWoCU1ZyCFFIMk9BU0JOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ## Find the cheapest month to fly from Missoula (MSO) to Seattle (SEA) ### January is typically the cheapest month to fly From £101 - £220 per traveller. 0 Flight from Missoula to Seattle route information | Origin airport | Missoula Intl. | | --- | --- | | Destination airport | Seattle - Tacoma Intl. | | Return price | £169 | | Distance | 619 km | ## Compare flights from Missoula to Seattle easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Missoula to Seattle. Operating between them flights per day, 10 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 Missoula Intl. 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 Missoula Intl. (MSO) to Seattle - Tacoma Intl. (SEA) The easiest way to view the best deals on flights from Missoula 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 Missoula Intl. to Seattle - Tacoma Intl. start at just £169 and range up to £432.   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Missoula and Seattle - booking your flight during February, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Missoula to Seattle flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Missoula Intl. 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 MSO to SEA? > Start packing your bags, because round-trip flights between Missoula Intl. Airport (MSO) and Seattle - Tacoma Intl. Airport (SEA) start from £169. That's based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book today 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 Missoula Intl. Airport (MSO) to Sea-Tac Airport? > Each airline has its own set of terms and conditions. If you decide to cancel your trip, visit our [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from Missoula Intl. Airport to 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 MSO to SEA flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from MSO to Sea-Tac Airport? > The distance from Missoula Intl. Airport (MSO) (MSO) to SEA (SEA) is just 620 kilometres. You'll be stepping off the plane and collecting your baggage from the carousel in no time. ### Which airlines fly direct from MSO to Sea-Tac Airport? > Operating 108 flights every month, Alaska Airlines (AS) is a top choice when flying directly from Missoula Intl. Airport to Seattle - Tacoma Intl. Airport (SEA). ### Are MSO to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute? > Flight prices always go up and down, so there are no guarantees. While last-minute deals between Missoula Intl. Airport and Seattle - Tacoma Intl. Airport (SEA) are possible, it's also a good idea to keep a close eye on prices well before you fly. In fact, some carriers announce their prices up to a year ahead of the departure date. Expedia is constantly updating the best airfare bargains around, so keep checking back and be ready to lock in your seat when the price is low. ## 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 to Seattle - [Newark Liberty Intl. 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