Missoula to Seattle Flights MSOSEA

Missoula International Airport Seattle–Tacoma International Airport

🇺🇸 Missoula, US 🇺🇸 Seattle, US

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.

About This Route

Route Overview

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Here's the requested information about flights from Missoula to Seattle:

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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.

Travel Tips

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.

Destination Highlights

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.

Best Time to Fly

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.

Airport Information

Departure Airport

Missoula International Airport

ICAO Code:
KMSO
IATA Code:
MSO
City:
🇺🇸 Missoula
Country:
US
Elevation:
3206 ft

Destination Airport

Seattle–Tacoma International Airport

ICAO Code:
KSEA
IATA Code:
SEA
City:
🇺🇸 Seattle
Country:
US
Elevation:
433 ft

Route Statistics

2

Operators

8

Daily Flights

388

Miles

1h 1m

Flight Duration

Route Map

Great Circle
Flight route map from Missoula to Seattle

Operating Airlines

Airline ICAO IATA
Horizon QXE QX
Alaska Airlines ASA AS

Flight Schedule Pattern

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%

Pattern Analysis

Data Points: 331
API observations used to build this analysis
Weekdays: 242 flights
Weekend: 89 flights
Business Route More active on weekdays

All Flight Routes

2 Routes
Note: This table shows aggregated route data by airline. Each airline may operate multiple daily flights at different times. See the "Spotted Departure Times" section below for all observed departure times.
Airline Flight Numbers Aircraft Type Typical Time Days Active Last Seen Status
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
Total Routes: 2
Active Routes: 2
Unique Airlines: 2
Aircraft Types: 2

Spotted Departure Times

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).

Total Departure Times: 2
Time Range:
14:03 - 16:20
These are typical departure times observed from actual flights. Times may vary by season and schedule changes.