Seattle→BaltimoreNonstop Flight TimeSEA–BWI

Seattle (Seattle-Tacoma International Airport) to Baltimore (Baltimore/Washington International Airport).

Direct flights from SEA to BWI have an estimated flight time of about 5h 23m, based on the 2,329-mile great-circle distance. Our current captured departure sample includes 3-4/day across 3 captured airlines, with Alaska Airlines appearing most often in that sample. Captured departure times run from 09:03 to 22:20 local time.

Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for SEA to BWI, last seen June 15, 2026. Frequency uses 22 scheduled departures across 7 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.