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KKJ to WBU: distance & flight time
Kitakyushu (Kitakyūshū Airport) → Boulder (Boulder Municipal Airport)
6,198 mi
9,975 km · 5,386 nm
12h 37m
estimated nonstop flight time
-15h
time difference · heading northeast
See live KKJ→WBU fares Phone-only fares on this route — call free
Flight time details
6,198 miles nonstop takes roughly 12h 37m 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
- KKJ — Kitakyūshū Airport · Kitakyushu, 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 KKJ
- UBJ · Yamaguchi Ube Airport15 mi away
- FUK · Fukuoka Airport38 mi away
- OIT · Oita Airport48 mi away
- HSG · Saga Airport64 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 KKJ from WBU?
The flight distance from Kitakyushu (KKJ) to Boulder (WBU) is 6,198 miles (9,975 km, 5,386 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KKJ to WBU?
A nonstop flight takes about 12h 37m 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 Kitakyushu and Boulder?
Boulder is 15 hours behind Kitakyushu.
What is the cheapest way to fly from KKJ to WBU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KKJ–WBU that never appear on search engines, with no booking fees.