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USM to THR: distance & flight time
Ko Samui (Samui Airport) → Teheran (Mehrabad International Airport)
3,546 mi
5,707 km · 3,082 nm
7h 25m
estimated nonstop flight time
-3.5h
time difference · heading northwest
See live USM→THR fares Phone-only fares on this route — call free
Flight time details
3,546 miles nonstop takes roughly 7h 25m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3.5-hour time set-back when reading arrival times on your ticket.
The two airports
- USM — Samui Airport · Ko Samui, Thailand
- THR — Mehrabad International Airport · Teheran, Iran
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 USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
Near THR
- IKA · Imam Khomeini International Airport21 mi away
- PYK · Payam International Airport28 mi away
- NSH · Noshahr Airport68 mi away
- GZW · Qazvin Airport80 mi away
Frequently asked questions
How far is USM from THR?
The flight distance from Ko Samui (USM) to Teheran (THR) is 3,546 miles (5,707 km, 3,082 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to THR?
A nonstop flight takes about 7h 25m 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 Ko Samui and Teheran?
Teheran is 3.5 hours behind Ko Samui.
What is the cheapest way to fly from USM to THR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–THR that never appear on search engines, with no booking fees.