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CSM to BFI: distance & flight time
Clinton (Clinton Sherman Airport) → Seattle (Boeing Field King County International Airport)
1,454 mi
2,340 km · 1,264 nm
3h 38m
estimated nonstop flight time
-2h
time difference · heading northwest
See live CSM→BFI fares Phone-only fares on this route — call free
Flight time details
1,454 miles nonstop takes roughly 3h 38m 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
- CSM — Clinton Sherman Airport · Clinton, 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 CSM
- HBR · Hobart Regional Airport26 mi away
- LTS · Altus Air Force Base47 mi away
- FSI · Henry Post Army Air Field (Fort Sill)66 mi away
- LAW · Lawton Fort Sill Regional Airport69 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 CSM from BFI?
The flight distance from Clinton (CSM) to Seattle (BFI) is 1,454 miles (2,340 km, 1,264 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CSM to BFI?
A nonstop flight takes about 3h 38m 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 Clinton and Seattle?
Seattle is 2 hours behind Clinton.
What is the cheapest way to fly from CSM to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CSM–BFI that never appear on search engines, with no booking fees.