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SEP to NST: distance & flight time
Stephenville (Stephenville Clark Regional Airport) → Nakhon Si Thammarat (Nakhon Si Thammarat Airport)
9,378 mi
15,092 km · 8,149 nm
18h 51m
estimated nonstop flight time
+12h
time difference · heading northwest
See live SEP→NST fares Phone-only fares on this route — call free
Flight time details
9,378 miles nonstop takes roughly 18h 51m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- SEP — Stephenville Clark Regional Airport · Stephenville, United States
- NST — Nakhon Si Thammarat Airport · Nakhon Si Thammarat, 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 SEP
- MWL · Mineral Wells Airport40 mi away
- DFW · Dallas Fort Worth International Airport81 mi away
- BKD · Stephens County Airport54 mi away
- FWH · NAS Fort Worth JRB/Carswell Field57 mi away
Near NST
- URT · Surat Thani Airport69 mi away
- USM · Samui Airport70 mi away
- KBV · Krabi Airport72 mi away
- TST · Trang Airport75 mi away
Frequently asked questions
How far is SEP from NST?
The flight distance from Stephenville (SEP) to Nakhon Si Thammarat (NST) is 9,378 miles (15,092 km, 8,149 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEP to NST?
A nonstop flight takes about 18h 51m 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 Stephenville and Nakhon Si Thammarat?
Nakhon Si Thammarat is 12 hours ahead of Stephenville.
What is the cheapest way to fly from SEP to NST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEP–NST that never appear on search engines, with no booking fees.