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Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ICN–THS that never appear on search engines, with no booking fees.