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GMP to WBU: distance & flight time
Seoul (Gimpo International Airport) → Boulder (Boulder Municipal Airport)
6,145 mi
9,889 km · 5,340 nm
12h 31m
estimated nonstop flight time
-15h
time difference · heading northeast
See live GMP→WBU fares Phone-only fares on this route — call free
Flight time details
6,145 miles nonstop takes roughly 12h 31m 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
- GMP — Gimpo 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 GMP
- ICN · Incheon International Airport20 mi away
- SSN · Seoul Air Base (K-16)19 mi away
- SWU · Suwon Airport25 mi away
- OSN · Osan Air Base35 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 GMP from WBU?
The flight distance from Seoul (GMP) to Boulder (WBU) is 6,145 miles (9,889 km, 5,340 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GMP to WBU?
A nonstop flight takes about 12h 31m 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 GMP to WBU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GMP–WBU that never appear on search engines, with no booking fees.