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USM to HRI: distance & flight time
Ko Samui (Samui Airport) → Mattala (Mattala Rajapaksa International Airport)
1,315 mi
2,117 km · 1,143 nm
3h 20m
estimated nonstop flight time
-1.5h
time difference · heading west
See live USM→HRI fares Phone-only fares on this route — call free
Flight time details
1,315 miles nonstop takes roughly 3h 20m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.5-hour time set-back when reading arrival times on your ticket.
The two airports
- USM — Samui Airport · Ko Samui, Thailand
- HRI — Mattala Rajapaksa International Airport · Mattala, Sri Lanka
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 HRI
- WRZ · Weerawila Airport8 mi away
- KCT · Koggala Airport59 mi away
- ADP · Ampara Airport81 mi away
- RML · Colombo Ratmalana Airport93 mi away
Frequently asked questions
How far is USM from HRI?
The flight distance from Ko Samui (USM) to Mattala (HRI) is 1,315 miles (2,117 km, 1,143 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to HRI?
A nonstop flight takes about 3h 20m 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 Mattala?
Mattala is 1.5 hours behind Ko Samui.
What is the cheapest way to fly from USM to HRI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–HRI that never appear on search engines, with no booking fees.