Flights Seattle → Missoula
SEA → MSO
Route overview
The flight route from Seattle to Missoula operates with a high level of punctuality, with 85% of flights arriving on time. Over the course of a year, approximately 248 flights are conducted using the De Havilland Canada DHC-8-400 Dash 8Q aircraft, experiencing an average delay of just 4.9 minutes.
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 Seattle (SEA) → Missoula (MSO) route is operated by Alaska Airlines. Across 334 flights monitored in recent months, 83% arrived on time (within 15 min of schedule), with an average delay of 8 minutes. The cancellation rate is 2.40%. FlightGuard's average computed risk is 19.9/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Missoula the average ATFM delay is 2.0 minutes (main cause: airspace/NAS (BTS)). Departing from Seattle the average ATFM delay is 2.0 minutes.
Heading to Missoula: what to expect in this direction
Flying from Seattle (SEA) to Missoula (MSO) heads east for about 624 km, a flight time of roughly 1h 12m.
Departures from Seattle on this leg cluster in the overnight window: about 39% of SEA-MSO flights take off then.
Air-traffic congestion: departing Seattle the average ATFM delay is 2.0 min (atfm); arriving into Missoula it is 2.0 min (airspace/NAS (BTS)).
Across 334 tracked SEA-MSO flights, 83% left on time with an average delay of 8 min and a 2.4% 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 SEA-MSO
Airports
Frequently asked questions about SEA-MSO
On the Seattle (SEA) -> Missoula (MSO) route, on-time performance is 83% with an average delay of 8 minutes, based on 334 tracked flights.
The cancellation rate on Seattle-Missoula is 2.40% across 334 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 Missoula, 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.
