Flights Baltimore → Seattle
BWI → SEA
How long is the flight from Baltimore to Seattle?
The flight from Baltimore (BWI) to Seattle (SEA) takes 5h 12m on average. That is the median time recorded across 2 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
This flight route connects Baltimore with Seattle, featuring a moderate on-time performance rate of 79%, with an average delay of 8.9 minutes per flight. Over the past year, there have been 96 flights on this route, departing from Baltimore's airport, which has been in operation since 1947, heading towards Seattle's bustling airport that serves over 52 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 Baltimore (BWI) → Seattle (SEA) route is operated by Southwest Airlines. Across 383 flights monitored in recent months, 73% arrived on time (within 15 min of schedule), with an average delay of 15 minutes. The cancellation rate is 2.87%. FlightGuard's average computed risk is 26.1/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Seattle the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from Baltimore the average ATFM delay is 5.5 minutes.
Heading to Seattle: what to expect in this direction
Flying from Baltimore (BWI) to Seattle (SEA) heads north-west for about 3,748 km, a flight time of roughly 5h 12m.
Departures from Baltimore on this leg cluster in the midday window: about 54% of BWI-SEA flights take off then.
Air-traffic congestion: departing Baltimore the average ATFM delay is 5.5 min (atfm); arriving into Seattle it is 5.5 min (atfm).
Across 383 tracked BWI-SEA flights, 73% left on time with an average delay of 15 min and a 2.9% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Southwest Airlines (WN) | 75% | 5 min | 0.3% |
Airlines operating BWI-SEA
Airports
Frequently asked questions about BWI-SEA
The flight from Baltimore (BWI) to Seattle (SEA) takes 5h 12m on average. That is the median time recorded across 2 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Baltimore (BWI) -> Seattle (SEA) route, on-time performance is 73% with an average delay of 15 minutes, based on 383 tracked flights.
The cancellation rate on Baltimore-Seattle is 2.87% across 383 monitored flights.
The route is operated by 1 airline: Southwest 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.
