Cheap Flights from Missoula (MSO) to Seattle (SEA)

View AU$121 flight on Sun, 7 Dec 2025Opens in a new window

Popular airlines from Missoula Intl. Airport (MSO) to Seattle-Tacoma International Airport (SEA)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 35% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Missoula (MSO) to Seattle (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Missoula (MSO) to Seattle (SEA)

February is typically the cheapest month to fly

From AU$206 - AU$451 per traveller.

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 . 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.
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.

Travel information

0
Origin airport
Missoula Intl.
Destination airport
Seattle - Tacoma Intl.
Distance
619 km

Book with confidence

Your quick guide to flights from Missoula to Seattle

Pick up great flights from Missoula to Seattle

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Missoula to Seattle. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Missoula to Seattle that take around hours.

Find cheap flights from Missoula to Seattle

From the great flight deals with prices currently ranging from to , you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Missoula to Seattle around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Seattle is normally in .

Reasons to book your flight from Missoula to Seattle with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Missoula to Seattle across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Seattle right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Missoula to Seattle

Explore a world of travel with Expedia

*Available to Expedia members.