$79 Cheap Alaska Airlines flights Missoula (MSO) to Seattle (SEA)

Make use of the “Price (lowest to highest)” filter on Expedia to search for cheap Alaska Airlines round-trip flights from MSO to SEA. Affordable one-way fares from $79 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Look for round-trip or one-way flights to Seattle in January or February. You could find lower fares with Alaska Airlines during these quieter months.

Begin your search one to three months ahead of your travel date to find cheaper fares on Alaska Airlines flights from Missoula Intl. Airport (MSO) to Seattle - Tacoma Intl. Airport (SEA). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing spot on, and you can enjoy significant savings on domestic trips.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Book a seat on one of Alaska Airlines’s 20 weekly direct flights from Missoula Intl. Airport (MSO) to Seattle - Tacoma Intl. Airport (SEA). To see your options, enter your origin, destination and dates and hit search. Then apply the “Nonstop” and “Airline” filters.

Leave Missoula Intl. Airport (MSO) for Seattle - Tacoma Intl. Airport (SEA) on a direct Alaska Airlines flight, and you’ll be in the skies for approximately 1h 37m.

Monday has the most Alaska Airlines flights from Missoula Intl. Airport (MSO) to Seattle - Tacoma Intl. Airport (SEA). With 3 daily departures, this is the best day of the week to book something that will suit your schedule.

Setting off from MSO at 6:30AM UTC-7, the first Alaska Airlines flight to SEA lands at 7:10AM UTC-8. Traveling earlier in the day means you’re less likely to encounter cancellations or delays.* Prefer to travel later? The last Alaska Airlines flight from MSO to SEA departs at 6:35PM UTC-7 and touches down at 7:14PM UTC-8.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Seattle - Tacoma Intl. Airport (SEA) is the main Seattle hub for Alaska Airlines flights from Missoula Intl. Airport (MSO).

Jetting off from MSO to SEA with Alaska Airlines means enjoying a range of perks, such as an excellent in-flight experience and a rewarding loyalty program. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to redeem on select future travel purchases. That’s in addition to the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

For the Missoula Intl. Airport (MSO) to Seattle - Tacoma Intl. Airport (SEA) route, Alaska Airlines typically flies Embraer 175 and Boeing 737 MAX 9 planes. Don’t forget that last-minute changes can occur for operational demands, so your flight may be on another aircraft.

Changes are often free within 24 hours of booking, but your airline may charge you after that time. For more details about modifying your reservation, go to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your itinerary without additional charges, apply the “No cancel fee” or “Changes included” filter when organizing your next escape.