Flights Lewiston → Seattle
LWS → SEA
Route overview
The flight route from Lewiston to Seattle operates with high punctuality, boasting a 97% on-time performance rate and an average arrival two minutes early. Over the course of a year, this route sees eighty-nine flights using the De Havilland Canada DHC-8-400 Dash 8Q aircraft, serving a destination airport that accommodates over fifty-two million passengers annually.
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 Lewiston (LWS) → Seattle (SEA) route is operated by Alaska Airlines. Across 120 flights monitored in recent months, 93% arrived on time (within 15 min of schedule), with an average delay of 1 minutes. The cancellation rate is 1.67%. FlightGuard's average computed risk is 12.5/100 (low), 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 Lewiston the average ATFM delay is 0.6 minutes.
Heading to Seattle: what to expect in this direction
Flying from Lewiston (LWS) to Seattle (SEA) heads west for about 419 km, a flight time of roughly 57m.
Departures from Lewiston on this leg cluster in the overnight window: about 100% of LWS-SEA flights take off then.
Air-traffic congestion: departing Lewiston the average ATFM delay is 0.6 min (airspace/NAS (BTS)); arriving into Seattle it is 2.0 min (atfm).
Across 120 tracked LWS-SEA flights, 93% left on time with an average delay of 1 min and a 1.7% cancellation rate.
Route facts
Flights on this route
Check the risk of a specific flight.
Flexible on this trip? Compare flights
Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Alaska Airlines (AS) | 67% | 10 min | 11.9% |
Airlines operating LWS-SEA
Airports
Frequently asked questions about LWS-SEA
On the Lewiston (LWS) -> Seattle (SEA) route, on-time performance is 93% with an average delay of 1 minutes, based on 120 tracked flights.
The cancellation rate on Lewiston-Seattle is 1.67% across 120 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.
