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HRL to USM: distance & flight time
Harlingen (Valley International Airport) → Ko Samui (Samui Airport)
9,694 mi
15,600 km · 8,423 nm
19h 28m
estimated nonstop flight time
+12h
time difference · heading northwest
See live HRL→USM fares Phone-only fares on this route — call free
Flight time details
9,694 miles nonstop takes roughly 19h 28m 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
- HRL — Valley International Airport · Harlingen, 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 HRL
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 HRL from USM?
The flight distance from Harlingen (HRL) to Ko Samui (USM) is 9,694 miles (15,600 km, 8,423 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HRL to USM?
A nonstop flight takes about 19h 28m 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 Harlingen and Ko Samui?
Ko Samui is 12 hours ahead of Harlingen.
What is the cheapest way to fly from HRL to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HRL–USM that never appear on search engines, with no booking fees.