The cheapest times to fly from SEA to MSO are

  • January 1st to March 4th (except the week of February 12th)
  • April 2nd to April 22nd
  • August 13th to November 18th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SEA to MSO is late October. Prices can be as high as $895 for Thursday flights during late July, or as low as $222 for Tuesday flights around late October.


When to Fly to Missoula

Flying from Seattle, WA (SEA) to Missoula, MT (MSO) will usually cost between $227 to $373 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late October with an average ticket price of $241. Due to high demand the most expensive time to fly is late July, with an average price of $450. Planning your trip to low-cost times can easily save you $209 on economy flights and even more on first-class flights. Generally, any price below $263 can be considered a good price for a round-trip SEA to MSO flight.

See below for a graph of average weekly prices for the SEA to MSO route. All prices are for round-trip tickets in USD.

SEA to MSO Flight Prices

Compared to other flights, the SEA to MSO flight is much cheaper than the average and costs much less than the average flight leaving from Seattle. The average price per mile (for a direct flight) is $0.42, which is a bit above average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Thursdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $26 (9%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $257. Return trip prices are from the MSO to SEA flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SEA to MSO can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 1 hour 41 minutes may be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is a nonstop flight from SEA to MSO while comparing.

Destination alternative #1: Pullman Moscow Regional Airport (PUW) in Pullman, WA

  • 143 miles (230 km) away from MSO
  • Usually 13.69% less expensive than MSO
  • Nonstop flights available

See SEA to PUW flights

Destination alternative #2: Glacier Park International Airport (FCA) in Kalispell, MT

  • 97 miles (156 km) away from MSO
  • Usually 1.14% less expensive than MSO
  • Nonstop flights available

See SEA to FCA flights


Flight Questions Answered

Still have questions about flying from SEA to MSO? We’ve got answers.

Which airlines fly this route?

You can find 5 major airlines flying this route most often: Alaska, American, Delta, Frontier, United, and potentially more during busy seasons.

How far away is it from Missoula International Airport to Seattle/Tacoma International Airport?

The distance between the two airports is roughly 388 miles or 624 kilometers.

How long does it take to fly from SEA to MSO?

The real-world flight time for a nonstop SEA to MSO flight is about 1 hour 41 minutes.

How many flights go between Seattle, WA and Missoula, MT?

It depends on the day of the week and the date, but a typical day might have around 56 available flights from SEA to MSO.


Airport Location Info


Departing Airport

Origination code SEA
Origination airport name Seattle/Tacoma International Airport
City Seattle, WA
Country the United States
Latitude 47.5
Longitude -122.3

Return Airport

Destination code MSO
Destination airport name Missoula International Airport
City Missoula, MT
Country the United States
Latitude 46.9
Longitude -114.1


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.