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ICN to WBU: distance & flight time
Seoul (Incheon International Airport) → Boulder (Boulder Municipal Airport)
6,161 mi
9,915 km · 5,354 nm
12h 33m
estimated nonstop flight time
-15h
time difference · heading northeast
See live ICN→WBU fares Phone-only fares on this route — call free
Flight time details
6,161 miles nonstop takes roughly 12h 33m 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
- ICN — Incheon International Airport · Seoul, South Korea
- 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 ICN
- GMP · Gimpo International Airport20 mi away
- SWU · Suwon Airport34 mi away
- SSN · Seoul Air Base (K-16)36 mi away
- OSN · Osan Air Base41 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 ICN from WBU?
The flight distance from Seoul (ICN) to Boulder (WBU) is 6,161 miles (9,915 km, 5,354 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ICN to WBU?
A nonstop flight takes about 12h 33m 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 Seoul and Boulder?
Boulder is 15 hours behind Seoul.
What is the cheapest way to fly from ICN to WBU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ICN–WBU that never appear on search engines, with no booking fees.