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THS to ICN: distance & flight time
Sukhothai (Sukhothai Airport) → Seoul (Incheon International Airport)
2,136 mi
3,438 km · 1,857 nm
4h 39m
estimated nonstop flight time
+2h
time difference · heading northeast
See live THS→ICN fares Phone-only fares on this route — call free
Flight time details
2,136 miles nonstop takes roughly 4h 39m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- THS — Sukhothai Airport · Sukhothai, Thailand
- 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 THS
- PHS · Phitsanulok Airport44 mi away
- TKT · Tak Airport44 mi away
- PRH · Phrae Airport66 mi away
- LPT · Lampang Airport74 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 THS from ICN?
The flight distance from Sukhothai (THS) to Seoul (ICN) is 2,136 miles (3,438 km, 1,857 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THS to ICN?
A nonstop flight takes about 4h 39m 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 Sukhothai and Seoul?
Seoul is 2 hours ahead of Sukhothai.
What is the cheapest way to fly from THS to ICN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THS–ICN that never appear on search engines, with no booking fees.