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CPR to BFI: distance & flight time
Casper (Casper-Natrona County International Airport) → Seattle (Boeing Field King County International Airport)
832 mi
1,340 km · 723 nm
2h 17m
estimated nonstop flight time
-1h
time difference · heading northwest
See live CPR→BFI fares Phone-only fares on this route — call free
Flight time details
832 miles nonstop takes roughly 2h 17m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- CPR — Casper-Natrona County International Airport · Casper, 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 CPR
- RWL · Rawlins Municipal Airport/Harvey Field85 mi away
- RIW · Riverton Regional Airport101 mi away
- SAA · Shively Field103 mi away
- WRL · Worland Municipal Airport104 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 CPR from BFI?
The flight distance from Casper (CPR) to Seattle (BFI) is 832 miles (1,340 km, 723 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CPR to BFI?
A nonstop flight takes about 2h 17m 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 Casper and Seattle?
Seattle is 1 hour behind Casper.
What is the cheapest way to fly from CPR to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CPR–BFI that never appear on search engines, with no booking fees.