Flights Missoula → Seattle
MSO → SEA
Route overview
The flight route from Missoula to Seattle is served by the De Havilland Canada DHC-8-400 Dash 8Q aircraft and operates with a high on-time performance rate of 90%. Over the course of one year, there have been 248 flights with an average delay of just 4.2 minutes, making it a reliable choice for travelers between these cities.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Missoula (MSO) → Seattle (SEA) route is operated by Alaska Airlines. Across 333 flights monitored in recent months, 86% arrived on time (within 15 min of schedule), with an average delay of 9 minutes. The cancellation rate is 3.00%. FlightGuard's average computed risk is 19.8/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Seattle the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from Missoula the average ATFM delay is 2.0 minutes.
Heading to Seattle: what to expect in this direction
Flying from Missoula (MSO) to Seattle (SEA) heads west for about 624 km, a flight time of roughly 1h 12m.
Departures from Missoula on this leg cluster in the morning window: about 57% of MSO-SEA flights take off then.
Air-traffic congestion: departing Missoula the average ATFM delay is 2.0 min (airspace/NAS (BTS)); arriving into Seattle it is 2.0 min (atfm).
Across 333 tracked MSO-SEA flights, 86% left on time with an average delay of 9 min and a 3.0% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Alaska Airlines (AS) | 67% | 10 min | 11.9% |
Airlines operating MSO-SEA
Airports
Frequently asked questions about MSO-SEA
On the Missoula (MSO) -> Seattle (SEA) route, on-time performance is 86% with an average delay of 9 minutes, based on 333 tracked flights.
The cancellation rate on Missoula-Seattle is 3.00% across 333 monitored flights.
The route is operated by 1 airline: Alaska Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Seattle, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
