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ONT to OKO: distance & flight time
Ontario (Ontario International Airport) → Yokota (Yokota Air Base)
5,521 mi
8,885 km · 4,797 nm
11h 17m
estimated nonstop flight time
+16h
time difference · heading northwest
See live ONT→OKO fares Phone-only fares on this route — call free
Flight time details
5,521 miles nonstop takes roughly 11h 17m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- OKO — Yokota Air Base · Yokota, Japan
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 ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
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
Frequently asked questions
How far is ONT from OKO?
The flight distance from Ontario (ONT) to Yokota (OKO) is 5,521 miles (8,885 km, 4,797 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to OKO?
A nonstop flight takes about 11h 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 Ontario and Yokota?
Yokota is 16 hours ahead of Ontario.
What is the cheapest way to fly from ONT to OKO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–OKO that never appear on search engines, with no booking fees.