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OPO to USM: distance & flight time
Porto (Francisco de Sá Carneiro Airport) → Ko Samui (Samui Airport)
6,730 mi
10,831 km · 5,848 nm
13h 40m
estimated nonstop flight time
+6h
time difference · heading east
See live OPO→USM fares Phone-only fares on this route — call free
Flight time details
6,730 miles nonstop takes roughly 13h 40m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
- 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 OPO
- BGZ · Braga Municipal Aerodrome26 mi away
- VRL · Vila Real Airport50 mi away
- VSE · Aerodromo Goncalves Lobato (Viseu Airport)55 mi away
- VGO · Vigo Airport68 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 OPO from USM?
The flight distance from Porto (OPO) to Ko Samui (USM) is 6,730 miles (10,831 km, 5,848 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OPO to USM?
A nonstop flight takes about 13h 40m 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 Porto and Ko Samui?
Ko Samui is 6 hours ahead of Porto.
What is the cheapest way to fly from OPO to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OPO–USM that never appear on search engines, with no booking fees.