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KEF to CPR: distance & flight time
Keflavik (Keflavik International Airport) → Casper (Casper-Natrona County International Airport)
3,437 mi
5,531 km · 2,987 nm
7h 12m
estimated nonstop flight time
-6h
time difference · heading west
See live KEF→CPR fares Phone-only fares on this route — call free
Flight time details
3,437 miles nonstop takes roughly 7h 12m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- KEF — Keflavik International Airport · Keflavik, Iceland
- CPR — Casper-Natrona County International Airport · Casper, 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 KEF
- RKV · Reykjavik Airport22 mi away
- GUU · Grundarfjörður Airport72 mi away
- VEY · Vestmannaeyjar Airport81 mi away
- PFJ · Patreksfjörður Airport116 mi away
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
Frequently asked questions
How far is KEF from CPR?
The flight distance from Keflavik (KEF) to Casper (CPR) is 3,437 miles (5,531 km, 2,987 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KEF to CPR?
A nonstop flight takes about 7h 12m 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 Keflavik and Casper?
Casper is 6 hours behind Keflavik.
What is the cheapest way to fly from KEF to CPR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KEF–CPR that never appear on search engines, with no booking fees.