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FNL to SSN: distance & flight time
Fort Collins (Northern Colorado Regional Airport) → Seoul East (Seoul Air Base (K-16))
6,125 mi
9,858 km · 5,323 nm
12h 29m
estimated nonstop flight time
+15h
time difference · heading northwest
See live FNL→SSN fares Phone-only fares on this route — call free
Flight time details
6,125 miles nonstop takes roughly 12h 29m 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
- FNL — Northern Colorado Regional Airport · Fort Collins, United States
- SSN — Seoul Air Base (K-16) · Seoul East, 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 FNL
- DEN · Denver International Airport45 mi away
- GXY · Greeley–Weld County Airport20 mi away
- WBU · Boulder Municipal Airport31 mi away
- BJC · Rocky Mountain Metropolitan Airport38 mi away
Near SSN
- ICN · Incheon International Airport36 mi away
- SWU · Suwon Airport15 mi away
- GMP · Gimpo International Airport19 mi away
- OSN · Osan Air Base25 mi away
Frequently asked questions
How far is FNL from SSN?
The flight distance from Fort Collins (FNL) to Seoul East (SSN) is 6,125 miles (9,858 km, 5,323 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FNL to SSN?
A nonstop flight takes about 12h 29m 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 Fort Collins and Seoul East?
Seoul East is 15 hours ahead of Fort Collins.
What is the cheapest way to fly from FNL to SSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FNL–SSN that never appear on search engines, with no booking fees.