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WBU to GMP: distance & flight time
Boulder (Boulder Municipal Airport) → Seoul (Gimpo International Airport)
6,145 mi
9,889 km · 5,340 nm
12h 31m
estimated nonstop flight time
+15h
time difference · heading northwest
See live WBU→GMP fares Phone-only fares on this route — call free
Flight time details
6,145 miles nonstop takes roughly 12h 31m 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
- GMP — Gimpo International Airport · Seoul, South Korea
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 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
Frequently asked questions
How far is WBU from GMP?
The flight distance from Boulder (WBU) to Seoul (GMP) 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 WBU to GMP?
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 Boulder and Seoul?
Seoul is 15 hours ahead of Boulder.
What is the cheapest way to fly from WBU to GMP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–GMP that never appear on search engines, with no booking fees.