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UGN to OKO: distance & flight time
Chicago (Waukegan National Airport) → Yokota (Yokota Air Base)
6,269 mi
10,089 km · 5,448 nm
12h 46m
estimated nonstop flight time
+14h
time difference · heading northwest
See live UGN→OKO fares Phone-only fares on this route — call free
Flight time details
6,269 miles nonstop takes roughly 12h 46m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- UGN — Waukegan National Airport · Chicago, 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 UGN
- ORD · Chicago O'Hare International Airport31 mi away
- ENW · Kenosha Regional Airport12 mi away
- PWK · Chicago Executive Airport21 mi away
- RAC · John H Batten Airport24 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 UGN from OKO?
The flight distance from Chicago (UGN) to Yokota (OKO) is 6,269 miles (10,089 km, 5,448 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UGN to OKO?
A nonstop flight takes about 12h 46m 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 Chicago and Yokota?
Yokota is 14 hours ahead of Chicago.
What is the cheapest way to fly from UGN to OKO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UGN–OKO that never appear on search engines, with no booking fees.