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GTF to YEC: distance & flight time
Great Falls (Great Falls International Airport) → Yechon (Yecheon Airbase)
5,557 mi
8,943 km · 4,829 nm
11h 22m
estimated nonstop flight time
+15h
time difference · heading northwest
See live GTF→YEC fares Phone-only fares on this route — call free
Flight time details
5,557 miles nonstop takes roughly 11h 22m 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
- GTF — Great Falls International Airport · Great Falls, United States
- YEC — Yecheon Airbase · Yechon, 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 GTF
- HLN · Helena Regional Airport67 mi away
- CTB · Cut Bank International Airport91 mi away
- LWT · Lewistown Municipal Airport94 mi away
- HVR · Havre City County Airport104 mi away
Near YEC
Frequently asked questions
How far is GTF from YEC?
The flight distance from Great Falls (GTF) to Yechon (YEC) is 5,557 miles (8,943 km, 4,829 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GTF to YEC?
A nonstop flight takes about 11h 22m 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 Great Falls and Yechon?
Yechon is 15 hours ahead of Great Falls.
What is the cheapest way to fly from GTF to YEC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GTF–YEC that never appear on search engines, with no booking fees.