Need help booking?
Unpublished phone-only deals available
SEA to BWI: distance & flight time
Seattle (Seattle Tacoma International Airport) → Baltimore (Baltimore/Washington International Thurgood Marshall Airport)
2,329 mi
3,748 km · 2,024 nm
5h 2m
estimated nonstop flight time
+3h
time difference · heading east
See live SEA→BWI fares Phone-only fares on this route — call free
Flight time details
2,329 miles nonstop takes roughly 5h 2m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- SEA — Seattle Tacoma International Airport · Seattle, United States
- BWI — Baltimore/Washington International Thurgood Marshall Airport · Baltimore, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Near BWI
- DCA · Ronald Reagan Washington National Airport30 mi away
- IAD · Washington Dulles International Airport45 mi away
- FME · Tipton Airport8 mi away
- ANP · Lee Airport17 mi away
Frequently asked questions
How far is SEA from BWI?
The flight distance from Seattle (SEA) to Baltimore (BWI) is 2,329 miles (3,748 km, 2,024 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to BWI?
A nonstop flight takes about 5h 2m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Seattle and Baltimore?
Baltimore is 3 hours ahead of Seattle.
What is the cheapest way to fly from SEA to BWI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–BWI that never appear on search engines, with no booking fees.