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BWI to SEA: distance & flight time
Baltimore (Baltimore/Washington International Thurgood Marshall Airport) → Seattle (Seattle Tacoma International Airport)
2,329 mi
3,748 km · 2,024 nm
5h 2m
estimated nonstop flight time
-3h
time difference · heading northwest
See live BWI→SEA fares Phone-only fares on this route — call free
Flight time details
2,329 miles nonstop takes roughly 5h 2m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time set-back when reading arrival times on your ticket.
The two airports
- BWI — Baltimore/Washington International Thurgood Marshall Airport · Baltimore, United States
- SEA — Seattle Tacoma International Airport · Seattle, 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 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
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
Frequently asked questions
How far is BWI from SEA?
The flight distance from Baltimore (BWI) to Seattle (SEA) 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 BWI to SEA?
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 Baltimore and Seattle?
Seattle is 3 hours behind Baltimore.
What is the cheapest way to fly from BWI to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BWI–SEA that never appear on search engines, with no booking fees.