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SEP to THL: distance & flight time
Stephenville (Stephenville Clark Regional Airport) → Tachilek (Tachileik Airport)
8,604 mi
13,846 km · 7,476 nm
17h 20m
estimated nonstop flight time
+11.5h
time difference · heading north
See live SEP→THL fares Phone-only fares on this route — call free
Flight time details
8,604 miles nonstop takes roughly 17h 20m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11.5-hour time gain when reading arrival times on your ticket.
The two airports
- SEP — Stephenville Clark Regional Airport · Stephenville, United States
- THL — Tachileik Airport · Tachilek, Burma
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 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
Frequently asked questions
How far is SEP from THL?
The flight distance from Stephenville (SEP) to Tachilek (THL) is 8,604 miles (13,846 km, 7,476 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEP to THL?
A nonstop flight takes about 17h 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 Stephenville and Tachilek?
Tachilek is 11.5 hours ahead of Stephenville.
What is the cheapest way to fly from SEP to THL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEP–THL that never appear on search engines, with no booking fees.