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MDT to USM: distance & flight time
Harrisburg (Harrisburg International Airport) → Ko Samui (Samui Airport)
8,994 mi
14,474 km · 7,816 nm
18h 6m
estimated nonstop flight time
+11h
time difference · heading north
See live MDT→USM fares Phone-only fares on this route — call free
Flight time details
8,994 miles nonstop takes roughly 18h 6m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- MDT — Harrisburg International Airport · Harrisburg, 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 MDT
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 MDT from USM?
The flight distance from Harrisburg (MDT) to Ko Samui (USM) is 8,994 miles (14,474 km, 7,816 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from MDT to USM?
A nonstop flight takes about 18h 6m 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 Harrisburg and Ko Samui?
Ko Samui is 11 hours ahead of Harrisburg.
What is the cheapest way to fly from MDT to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on MDT–USM that never appear on search engines, with no booking fees.