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WBU to KOJ: distance & flight time
Boulder (Boulder Municipal Airport) → Kagoshima (Kagoshima Airport)
6,319 mi
10,169 km · 5,491 nm
12h 51m
estimated nonstop flight time
+15h
time difference · heading northwest
See live WBU→KOJ fares Phone-only fares on this route — call free
Flight time details
6,319 miles nonstop takes roughly 12h 51m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time gain when reading arrival times on your ticket.
The two airports
- WBU — Boulder Municipal Airport · Boulder, United States
- KOJ — Kagoshima Airport · Kagoshima, 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 WBU
- DEN · Denver International Airport32 mi away
- BJC · Rocky Mountain Metropolitan Airport11 mi away
- FNL · Northern Colorado Regional Airport31 mi away
- BFK · Buckley Air Force Base34 mi away
Near KOJ
- KMI · Miyazaki Airport43 mi away
- AXJ · Amakusa Airport57 mi away
- KMJ · Kumamoto Airport72 mi away
- TNE · New Tanegashima Airport84 mi away
Frequently asked questions
How far is WBU from KOJ?
The flight distance from Boulder (WBU) to Kagoshima (KOJ) is 6,319 miles (10,169 km, 5,491 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WBU to KOJ?
A nonstop flight takes about 12h 51m 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 Boulder and Kagoshima?
Kagoshima is 15 hours ahead of Boulder.
What is the cheapest way to fly from WBU to KOJ?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–KOJ that never appear on search engines, with no booking fees.