The Missoula to Seattle route connects Missoula International Airport (MSO) in US with Seattle–Tacoma International Airport (SEA) in US. This short-haul flight covers approximately 388 miles (624 km) with a typical flight time of 1h 1m. This route is served by 2 airlines: Horizon, Alaska Airlines. AirportRoutes has tracked 8 daily flights on this route.
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The route between Missoula International Airport (MSO) and Seattle-Tacoma International Airport (SEA) is a vital connection for both business and leisure travelers in the Northwestern United States. The route is popular due to its facilitation of commerce, tourism, and personal travel between Montana and Washington. Typical flight duration is approximately 1 hour and 30 minutes to 1 hour 57 minutes. Travelers often choose this connection for its convenience, saving considerable time compared to driving, which takes around 7.5 hours. Notably, Missoula Montana Airport was officially renamed Missoula Montana Airport in September 2021, and the first phase of a new terminal building came online in June 2022.
For the best prices, it's advisable to book your flight approximately 40 days (6 weeks) in advance, and to fly on Tuesdays, Wednesdays, or Saturdays. Tuesdays typically offer the cheapest flights for departure, while Saturdays offer the best return deals. At Missoula International Airport (MSO), arrive at least 90 minutes before domestic flights. MSO has a single terminal with six gates. For Seattle-Tacoma International Airport (SEA), download the flySEA app for step-by-step directions. SEA has a central terminal with four concourses and two satellite terminals. Since the flight is relatively short, expect standard in-flight service. A useful travel hack is to consider flying out before 3 PM from Missoula to minimize the chance of cancellations.
Seattle offers a diverse range of attractions and experiences. Top attractions include the Space Needle, Pike Place Market, and the Chihuly Garden and Glass. What makes Seattle unique is its blend of urban sophistication and natural beauty, with easy access to mountains and water. Key neighborhoods to visit include Fremont, known for the Fremont Troll, and Ballard, famous for its culinary scene. Don't miss the opportunity to experience local cuisine, such as fresh seafood, and explore the city's vibrant coffee culture.
The best time to visit Seattle for good weather is from late spring through the summer (May to August), when temperatures are warm. July is typically the hottest month in Seattle, with average temperatures around 64°F (18°C). To avoid crowds, consider traveling during the shoulder seasons (March-April and September-October). The cheapest months to fly from Missoula to Seattle are typically November and January**. Seattle hosts numerous festivals and events throughout the year, including Bumbershoot in September and various cultural festivals at the Seattle Center.
Missoula International Airport
KMSOMSOSeattle–Tacoma International Airport
KSEASEA2
Operators8
Daily Flights388
Miles1h 1m
Flight Duration
| Airline | ICAO | IATA |
|---|---|---|
| Horizon |
QXE
|
QX
|
| Alaska Airlines |
ASA
|
AS
|
| Day | Flights Observed | Frequency | Activity |
|---|---|---|---|
| Monday | 43 | 13% |
|
| Tuesday | 52 | 16% |
|
| Wednesday | 57 | 17% |
|
| Thursday | 42 | 13% |
|
| Friday | 48 | 15% |
|
| Saturday | 40 | 12% |
|
| Sunday | 49 | 15% |
|
| Airline | Flight Numbers | Aircraft Type | Typical Time | Days Active | Last Seen | Status |
|---|---|---|---|---|---|---|
|
Alaska Airlines
ASA
/ AS
|
ASA660 ASA138 ASA1481 ASA677 ASA1487 | B737 | 16:20 4:20 PM (Representative) |
M
T
W
T
F
S
S
|
Feb 3, 2026 | Active |
|
Horizon
QXE
/ QX
|
QXE2136 QXE2219 QXE9988 | E75L | 14:03 2:03 PM (Representative) |
M
T
W
T
F
S
S
|
Feb 3, 2026 | Active |
| Departure Time | Operator | ICAO | IATA |
|---|---|---|---|
| 14:03 2:03 PM | Horizon |
QXE
|
QX
|
| 16:20 4:20 PM | Alaska Airlines |
ASA
|
AS
|
Time Information
Times are shown in the departure airport's local timezone (UTC).