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BFI to TWF: distance & flight time
Seattle (Boeing Field King County International Airport) → Twin Falls (Joslin Field Magic Valley Regional Airport)
517 mi
831 km · 449 nm
1h 35m
estimated nonstop flight time
+1h
time difference · heading southeast
See live BFI→TWF fares Phone-only fares on this route — call free
Flight time details
517 miles nonstop takes roughly 1h 35m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- BFI — Boeing Field King County International Airport · Seattle, United States
- TWF — Joslin Field Magic Valley Regional Airport · Twin Falls, 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 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
Near TWF
- BYI · Burley Municipal Airport37 mi away
- SUN · Friedman Memorial Airport71 mi away
- MUO · Mountain Home Air Force Base80 mi away
- PIH · Pocatello Regional Airport101 mi away
Frequently asked questions
How far is BFI from TWF?
The flight distance from Seattle (BFI) to Twin Falls (TWF) is 517 miles (831 km, 449 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BFI to TWF?
A nonstop flight takes about 1h 35m 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 Twin Falls?
Twin Falls is 1 hour ahead of Seattle.
What is the cheapest way to fly from BFI to TWF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BFI–TWF that never appear on search engines, with no booking fees.