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DHT to USM: distance & flight time
Dalhart (Dalhart Municipal Airport) → Ko Samui (Samui Airport)
8,961 mi
14,422 km · 7,787 nm
18h 2m
estimated nonstop flight time
+12h
time difference · heading northwest
See live DHT→USM fares Phone-only fares on this route — call free
Flight time details
8,961 miles nonstop takes roughly 18h 2m 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
- DHT — Dalhart Municipal Airport · Dalhart, United States
- USM — Samui Airport · Ko Samui, 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 DHT
- BGD · Hutchinson County Airport68 mi away
- AMA · Rick Husband Amarillo International Airport73 mi away
- GUY · Guymon Municipal Airport74 mi away
- TCC · Tucumcari Municipal Airport83 mi away
Near USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
Frequently asked questions
How far is DHT from USM?
The flight distance from Dalhart (DHT) to Ko Samui (USM) is 8,961 miles (14,422 km, 7,787 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DHT to USM?
A nonstop flight takes about 18h 2m 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 Dalhart and Ko Samui?
Ko Samui is 12 hours ahead of Dalhart.
What is the cheapest way to fly from DHT to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DHT–USM that never appear on search engines, with no booking fees.