Need help booking?
Unpublished phone-only deals available
THL to ICN: distance & flight time
Tachilek (Tachileik Airport) → Seoul (Incheon International Airport)
1,974 mi
3,178 km · 1,716 nm
4h 20m
estimated nonstop flight time
+2.5h
time difference · heading northeast
See live THL→ICN fares Phone-only fares on this route — call free
Flight time details
1,974 miles nonstop takes roughly 4h 20m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2.5-hour time gain when reading arrival times on your ticket.
The two airports
- THL — Tachileik Airport · Tachilek, Burma
- ICN — Incheon 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 THL
- HOE · Ban Huoeisay Airport36 mi away
- CEI · Chiang Rai International Airport37 mi away
- MOG · Mong Hsat Airport44 mi away
- KET · Kengtung Airport60 mi away
Near ICN
- GMP · Gimpo International Airport20 mi away
- SWU · Suwon Airport34 mi away
- SSN · Seoul Air Base (K-16)36 mi away
- OSN · Osan Air Base41 mi away
Frequently asked questions
How far is THL from ICN?
The flight distance from Tachilek (THL) to Seoul (ICN) is 1,974 miles (3,178 km, 1,716 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THL to ICN?
A nonstop flight takes about 4h 20m 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 Tachilek and Seoul?
Seoul is 2.5 hours ahead of Tachilek.
What is the cheapest way to fly from THL to ICN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THL–ICN that never appear on search engines, with no booking fees.