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SAT to BFI: distance & flight time
San Antonio (San Antonio International Airport) → Seattle (Boeing Field King County International Airport)
1,777 mi
2,859 km · 1,544 nm
3h 57m
estimated nonstop flight time
-2h
time difference · heading northwest
See live SAT→BFI fares Phone-only fares on this route — call free
Flight time details
1,777 miles nonstop takes roughly 3h 57m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- SAT — San Antonio International Airport · San Antonio, United States
- BFI — Boeing Field King County 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 SAT
- RND · Randolph Air Force Base11 mi away
- SKF · Lackland Air Force Base12 mi away
- SSF · Stinson Municipal Airport14 mi away
- AUS · Austin Bergstrom International Airport66 mi away
Near BFI
- SEA · Seattle Tacoma International Airport6 mi away
- RNT · Renton Municipal Airport5 mi away
- PWT · Bremerton National Airport22 mi away
- TIW · Tacoma Narrows Airport22 mi away
Frequently asked questions
How far is SAT from BFI?
The flight distance from San Antonio (SAT) to Seattle (BFI) is 1,777 miles (2,859 km, 1,544 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SAT to BFI?
A nonstop flight takes about 3h 57m 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 San Antonio and Seattle?
Seattle is 2 hours behind San Antonio.
What is the cheapest way to fly from SAT to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SAT–BFI that never appear on search engines, with no booking fees.