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WBU to KUM: distance & flight time
Boulder (Boulder Municipal Airport) → Yakushima (Yakushima Airport)
6,397 mi
10,294 km · 5,559 nm
13h 1m
estimated nonstop flight time
+15h
time difference · heading northwest
See live WBU→KUM fares Phone-only fares on this route — call free
Flight time details
6,397 miles nonstop takes roughly 13h 1m 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
- KUM — Yakushima Airport · Yakushima, 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 KUM
- TNE · New Tanegashima Airport25 mi away
- KOJ · Kagoshima Airport98 mi away
- KMI · Miyazaki Airport113 mi away
- ASJ · Amami Airport147 mi away
Frequently asked questions
How far is WBU from KUM?
The flight distance from Boulder (WBU) to Yakushima (KUM) is 6,397 miles (10,294 km, 5,559 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WBU to KUM?
A nonstop flight takes about 13h 1m 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 Yakushima?
Yakushima is 15 hours ahead of Boulder.
What is the cheapest way to fly from WBU to KUM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–KUM that never appear on search engines, with no booking fees.