Flights Portland → Seattle
PDX → SEA
Route overview
The flight route from Portland to Seattle operates with a high on-time performance rate of 90%, with an average delay of just 3.7 minutes per flight. Over the course of a year, this route sees approximately 1520 flights using aircraft such as the De Havilland Canada DHC-8-400 Dash 8Q, Canadair Regional Jet 700, and Embraer EMB 120 Brasilia, serving a destination airport that handles nearly 52.7 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 Portland (PDX) → Seattle (SEA) route is operated by Alaska Airlines, United Airlines. Across 2105 flights monitored in recent months, 87% arrived on time (within 15 min of schedule), with an average delay of 8 minutes. The cancellation rate is 3.09%. FlightGuard's average computed risk is 21.6/100 (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 Portland the average ATFM delay is 2.0 minutes.
Heading to Seattle: what to expect in this direction
Flying from Portland (PDX) to Seattle (SEA) heads north for about 208 km, a flight time of roughly 41m.
Departures from Portland on this leg cluster in the overnight window: about 46% of PDX-SEA flights take off then.
Air-traffic congestion: departing Portland the average ATFM delay is 2.0 min (atfm); arriving into Seattle it is 2.0 min (atfm).
Across 2,105 tracked PDX-SEA flights, 87% left on time with an average delay of 8 min and a 3.1% 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 |
|---|---|---|---|
| United Airlines (UA) | 74% | 10 min | 6.9% |
| Alaska Airlines (AS) | 67% | 10 min | 11.9% |
Airlines operating PDX-SEA
Airports
Frequently asked questions about PDX-SEA
On the Portland (PDX) -> Seattle (SEA) route, on-time performance is 87% with an average delay of 8 minutes, based on 2105 tracked flights.
The cancellation rate on Portland-Seattle is 3.09% across 2105 monitored flights.
The route is operated by 2 airlines: Alaska Airlines, United 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.
