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UBJ to SPF: distance & flight time
Yamaguchi (Yamaguchi Ube Airport) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
6,012 mi
9,676 km · 5,224 nm
12h 15m
estimated nonstop flight time
-15h
time difference · heading northeast
See live UBJ→SPF fares Phone-only fares on this route — call free
Flight time details
6,012 miles nonstop takes roughly 12h 15m 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
- UBJ — Yamaguchi Ube Airport · Yamaguchi, Japan
- SPF — Black Hills Airport-Clyde Ice Field · Spearfish-South Dakota, 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 UBJ
- KKJ · Kitakyūshū Airport15 mi away
- OIT · Oita Airport41 mi away
- FUK · Fukuoka Airport53 mi away
- IWK · Iwakuni Marine Corps Air Station57 mi away
Near SPF
- RCA · Ellsworth Air Force Base41 mi away
- RAP · Rapid City Regional Airport47 mi away
- GCC · Gillette Campbell County Airport87 mi away
- CDR · Chadron Municipal Airport119 mi away
Frequently asked questions
How far is UBJ from SPF?
The flight distance from Yamaguchi (UBJ) to Spearfish-South Dakota (SPF) is 6,012 miles (9,676 km, 5,224 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UBJ to SPF?
A nonstop flight takes about 12h 15m 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 Yamaguchi and Spearfish-South Dakota?
Spearfish-South Dakota is 15 hours behind Yamaguchi.
What is the cheapest way to fly from UBJ to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UBJ–SPF that never appear on search engines, with no booking fees.