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NST to ICN: distance & flight time
Nakhon Si Thammarat (Nakhon Si Thammarat Airport) → Seoul (Incheon International Airport)
2,595 mi
4,177 km · 2,255 nm
5h 33m
estimated nonstop flight time
+2h
time difference · heading northeast
See live NST→ICN fares Phone-only fares on this route — call free
Flight time details
2,595 miles nonstop takes roughly 5h 33m 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
- NST — Nakhon Si Thammarat Airport · Nakhon Si Thammarat, 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 NST
- URT · Surat Thani Airport69 mi away
- USM · Samui Airport70 mi away
- KBV · Krabi Airport72 mi away
- TST · Trang Airport75 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 NST from ICN?
The flight distance from Nakhon Si Thammarat (NST) to Seoul (ICN) is 2,595 miles (4,177 km, 2,255 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from NST to ICN?
A nonstop flight takes about 5h 33m 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 Nakhon Si Thammarat and Seoul?
Seoul is 2 hours ahead of Nakhon Si Thammarat.
What is the cheapest way to fly from NST to ICN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on NST–ICN that never appear on search engines, with no booking fees.