$144 Cheap Alaska Airlines flights Washington (IAD) to Missoula (MSO)

Apply the “Price (lowest to highest)” filter on Expedia to look for cheap Alaska Airlines round-trip flights from IAD to MSO. Affordable one-way tickets from $144 are also available.**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.

Alaska Airlines flights to Missoula tend to be more affordable in the off-peak months of January and February. Whether you’re after a one-way or a return ticket, you could score a better deal then.

Start searching one to three months before your departure to find cheap fares on Alaska Airlines flights from Washington Dulles Intl. Airport (IAD) to Missoula Intl. Airport (MSO). 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 reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic journeys.*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.

Simply enter your dates, press search and select “Nonstop” on Expedia to find any direct flights from IAD to MSO with Alaska Airlines or another airline.

Browse Alaska Airlines’s earliest flights from IAD to MSO by checking the “Morning” and “Early Morning” filters. Not only will you get to your destination sooner, early departures are also 20% less likely to be canceled.**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.

Alaska Airlines flights from Washington Dulles Intl. Airport (IAD) to Missoula come in to land at Missoula Intl. Airport (MSO). This is the main entry point here.

Alaska Airlines makes traveling from IAD to MSO more enjoyable with an excellent in-flight experience and a rewarding loyalty program. You could even start earning points with Mileage Plan. Be sure to sign up to our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are typically free within 24 hours of making your booking, but your airline may add a charge after that time. For more details about altering your flights, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to update your itinerary without extra charges, check the “No cancel fee” or “Changes included” filter when planning your next escape.