C$142 Cheap Flights from Missoula (MSO) to Seattle \u002F Tacoma International (SEA)

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Flight deals from Missoula Airport to Seattle / Tacoma International Airport

Looking for a cheap last-minute deal or the best return flight from Missoula Airport to Seattle / Tacoma International Airport? If you want to travel next month, return fares start from C$226. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Missoula to Seattle / Tacoma International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Missoula to Seattle / Tacoma International flights are currently cheapest in March.

Direct flights from Missoula to Seattle / Tacoma International

Missoula to Seattle / Tacoma International: Alternative routes

Compare routes from Missoula to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

Missoula to Seattle: Flight information

The things to know before you go.
Cheapest flight foundC$141
Cheapest month to flyMarch
Average flight time1 hr, 39 mins
Most popular airlineAlaska Airlines
Average flights per week138

Finding cheap flights from Missoula to Seattle / Tacoma International: Frequently asked questions

The best price we found for a return flight from Missoula to Seattle / Tacoma International is C$227. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 39 minutes is the average flight time from Missoula to Seattle / Tacoma International.
Alaska Airlines, Hawaiian Airlines and Qatar Airways fly direct from Missoula to Seattle / Tacoma International.
As of January 2026, there are 138 flights per week flying from Missoula to Seattle / Tacoma International.
The cheapest month to fly from Missoula to Seattle / Tacoma International is usually February.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Missoula Airport to Seattle / Tacoma International Airport on Saturday, February 14, 2026.
Yes – the average flight time is 1 hour and 39 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle / Tacoma International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Alaska Airlines offers the cheapest flight tickets to Seattle / Tacoma International.

Flying from Missoula International Airport (MSO) to Seattle-Tacoma International Airport (SEA): what you need to know

  • A direct flight from Missoula International Airport to Seattle-Tacoma International Airport takes on average 1 hour 36 minutes. The timezone in Seattle is UTC-7, which makes it 1 hour behind Missoula.

  • Take your pick of 23 weekly flights from Missoula International Airport to Seattle-Tacoma International Airport. The 06:00 departure with Alaska Airlines is the earliest flight out between MSO and SEA. Alaska Airlines operates the latest service of the day at 21:41.

  • Traveling during a peak time like school or public holidays? Expect longer queues at security and check-in. To give yourself peace of mind, arrive up to four hours before international flights and two hours before domestic departures.

  • We make it a piece of cake to get a flight with a stopover. To see the options for flights from Missoula International Airport to Seattle-Tacoma International Airport, deselect 'Direct flights only.' Then, pick a flight with a stop long enough to explore your chosen city. Popular stopovers between MSO and SEA include:

    • Denver International Airport

    • San Francisco International Airport

    • Salt Lake City International Airport

How to find the cheapest flights from Missoula International Airport (MSO) to Seattle-Tacoma International Airport (SEA)

  • The lowest price we've found for a one-way ticket from Missoula International Airport to Seattle-Tacoma International Airport is C$142. For a return flight on this route, the best price is C$227. Depending on the availability and when you book, these fares could change.

  • Book 1 month before traveling. After looking at the numbers on our calendar, this is how far you should book ahead to find cheap flight tickets from MSO to SEA.

  • The cheapest month for flight tickets from Missoula International Airport to Seattle-Tacoma International Airport is September. Use the 'Whole month' tool to find the lowest prices if you have a flexible travel schedule.

  • Snapping up a cheap ticket from MSO to SEA is straightforward with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you when the price has dropped.

  • Use filters to find the ideal journey for you. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Missoula International Airport to Seattle-Tacoma International Airport, use the 'Sort by' function. You can also filter results by airline, departure and arrival times, and journey duration.

Handy information about Missoula International Airport (MSO)

  • Missoula International Airport is about 11 kilometres from central Missoula. If you're ride-sharing, driving or catching a cab from the center, it'll take 11 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the trip time to be approximately 35 minutes.

  • Searching for a convenient hotel near MSO? If you're on an early flight from Missoula International Airport to Seattle-Tacoma International Airport, these accommodation options will have you moments from your check-in counter:

Arriving at Seattle-Tacoma International Airport (SEA)

Getting from Seattle-Tacoma International Airport (SEA) to central Seattle

  • Seattle-Tacoma International Airport is approximately 23 kilometres from central Seattle. With a car rental or if you're catching a cab, the drive is about 18 minutes.

  • Getting there by public transport takes around 54 minutes.

When to fly to Seattle-Tacoma International Airport (SEA)

  • July is the most popular month for flights from Missoula International Airport to Seattle-Tacoma International Airport. To steer clear of the crowds, go to Seattle in May.

  • Lock in your flight from Missoula International Airport to Seattle-Tacoma International Airport for August if you'd like to go to Seattle during its warmest month. Expect temperatures of between 12ºC and 28ºC.

  • Look for cheap flight tickets from MSO to SEA in February if you like cooler conditions. Temperatures are at their lowest around then, ranging between -1ºC and 11ºC on average.

More about Seattle

  • If you're looking for somewhere to lay your head, you'll find the most popular stays in Seattle right here. Check out these hotels after you've booked your flight from MSO to SEA:

  • There are so many things to discover in this city it can be tricky to work out where to begin. Picardo Farm P-Patch Community Garden, Elliott Bay Waterfront and LMN Architects are leading attractions which should feature on any well-planned Seattle itinerary.

Complete your Seattle trip with hotels and a car rental

  • You've booked a cheap ticket to Seattle-Tacoma International Airport — next on the list is finding a great place to stay, and perhaps even your own set of wheels. We've compared prices across hundreds of companies to bring you the best hotels and car rental deals in Seattle.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.