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GMP to HLN: distance & flight time
Seoul (Gimpo International Airport) → Helena (Helena Regional Airport)
5,580 mi
8,980 km · 4,849 nm
11h 24m
estimated nonstop flight time
-15h
time difference · heading northeast
See live GMP→HLN fares Phone-only fares on this route — call free
Flight time details
5,580 miles nonstop takes roughly 11h 24m 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
- HLN — Helena Regional Airport · Helena, 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 HLN
- BTM · Bert Mooney Airport51 mi away
- GTF · Great Falls International Airport67 mi away
- BZN · Gallatin Field70 mi away
- LVM · Mission Field97 mi away
Frequently asked questions
How far is GMP from HLN?
The flight distance from Seoul (GMP) to Helena (HLN) is 5,580 miles (8,980 km, 4,849 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GMP to HLN?
A nonstop flight takes about 11h 24m 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 Helena?
Helena is 15 hours behind Seoul.
What is the cheapest way to fly from GMP to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GMP–HLN that never appear on search engines, with no booking fees.