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OIM to CPR: distance & flight time
Oshima (Oshima Airport) → Casper (Casper-Natrona County International Airport)
5,654 mi
9,100 km · 4,913 nm
11h 33m
estimated nonstop flight time
-15h
time difference · heading northeast
See live OIM→CPR fares Phone-only fares on this route — call free
Flight time details
5,654 miles nonstop takes roughly 11h 33m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time set-back when reading arrival times on your ticket.
The two airports
- OIM — Oshima Airport · Oshima, Japan
- 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 OIM
- HND · Tokyo Haneda International Airport58 mi away
- NJA · Atsugi Naval Air Facility47 mi away
- NRT · Narita International Airport89 mi away
- MYE · Miyakejima Airport50 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 OIM from CPR?
The flight distance from Oshima (OIM) to Casper (CPR) is 5,654 miles (9,100 km, 4,913 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OIM to CPR?
A nonstop flight takes about 11h 33m 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 Oshima and Casper?
Casper is 15 hours behind Oshima.
What is the cheapest way to fly from OIM to CPR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OIM–CPR that never appear on search engines, with no booking fees.