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KOJ to WBU: distance & flight time
Kagoshima (Kagoshima Airport) → Boulder (Boulder Municipal Airport)
6,319 mi
10,169 km · 5,491 nm
12h 51m
estimated nonstop flight time
-15h
time difference · heading northeast
See live KOJ→WBU fares Phone-only fares on this route — call free
Flight time details
6,319 miles nonstop takes roughly 12h 51m 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
- KOJ — Kagoshima Airport · Kagoshima, Japan
- WBU — Boulder Municipal Airport · Boulder, 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 KOJ
- KMI · Miyazaki Airport43 mi away
- AXJ · Amakusa Airport57 mi away
- KMJ · Kumamoto Airport72 mi away
- TNE · New Tanegashima Airport84 mi away
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
Frequently asked questions
How far is KOJ from WBU?
The flight distance from Kagoshima (KOJ) to Boulder (WBU) 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 KOJ to WBU?
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 Kagoshima and Boulder?
Boulder is 15 hours behind Kagoshima.
What is the cheapest way to fly from KOJ to WBU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOJ–WBU that never appear on search engines, with no booking fees.