Need help booking?
Unpublished phone-only deals available
THL to SPF: distance & flight time
Tachilek (Tachileik Airport) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
7,705 mi
12,400 km · 6,695 nm
15h 34m
estimated nonstop flight time
-12.5h
time difference · heading north
See live THL→SPF fares Phone-only fares on this route — call free
Flight time details
7,705 miles nonstop takes roughly 15h 34m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12.5-hour time set-back when reading arrival times on your ticket.
The two airports
- THL — Tachileik Airport · Tachilek, Burma
- SPF — Black Hills Airport-Clyde Ice Field · Spearfish-South Dakota, United States
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 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
Near SPF
- RCA · Ellsworth Air Force Base41 mi away
- RAP · Rapid City Regional Airport47 mi away
- GCC · Gillette Campbell County Airport87 mi away
- CDR · Chadron Municipal Airport119 mi away
Frequently asked questions
How far is THL from SPF?
The flight distance from Tachilek (THL) to Spearfish-South Dakota (SPF) is 7,705 miles (12,400 km, 6,695 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THL to SPF?
A nonstop flight takes about 15h 34m 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 Tachilek and Spearfish-South Dakota?
Spearfish-South Dakota is 12.5 hours behind Tachilek.
What is the cheapest way to fly from THL to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THL–SPF that never appear on search engines, with no booking fees.