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OKO to SEP: distance & flight time
Yokota (Yokota Air Base) → Stephenville (Stephenville Clark Regional Airport)
6,445 mi
10,372 km · 5,601 nm
13h 6m
estimated nonstop flight time
-14h
time difference · heading northeast
See live OKO→SEP fares Phone-only fares on this route — call free
Flight time details
6,445 miles nonstop takes roughly 13h 6m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time set-back when reading arrival times on your ticket.
The two airports
- OKO — Yokota Air Base · Yokota, Japan
- SEP — Stephenville Clark Regional Airport · Stephenville, 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 SEP
- MWL · Mineral Wells Airport40 mi away
- DFW · Dallas Fort Worth International Airport81 mi away
- BKD · Stephens County Airport54 mi away
- FWH · NAS Fort Worth JRB/Carswell Field57 mi away
Frequently asked questions
How far is OKO from SEP?
The flight distance from Yokota (OKO) to Stephenville (SEP) is 6,445 miles (10,372 km, 5,601 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OKO to SEP?
A nonstop flight takes about 13h 6m 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 Stephenville?
Stephenville is 14 hours behind Yokota.
What is the cheapest way to fly from OKO to SEP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OKO–SEP that never appear on search engines, with no booking fees.