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OKO to CPR: distance & flight time
Yokota (Yokota Air Base) → Casper (Casper-Natrona County International Airport)
5,606 mi
9,021 km · 4,871 nm
11h 27m
estimated nonstop flight time
-15h
time difference · heading northeast
See live OKO→CPR fares Phone-only fares on this route — call free
Flight time details
5,606 miles nonstop takes roughly 11h 27m 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
- OKO — Yokota Air Base · Yokota, 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 OKO
- HND · Tokyo Haneda International Airport28 mi away
- NRT · Narita International Airport58 mi away
- NJA · Atsugi Naval Air Facility21 mi away
- IBR · Hyakuri Airport67 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 OKO from CPR?
The flight distance from Yokota (OKO) to Casper (CPR) is 5,606 miles (9,021 km, 4,871 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OKO to CPR?
A nonstop flight takes about 11h 27m 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 Yokota and Casper?
Casper is 15 hours behind Yokota.
What is the cheapest way to fly from OKO to CPR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OKO–CPR that never appear on search engines, with no booking fees.