SIN to USM: Distance and Flight Time
The distance from Singapore Changi Airport (SIN) to Samui International Airport (USM) is 1,010 km (628 mi). A typical nonstop flight covers it in about 1h 45m, heading northwest. The distance is the same in either direction (USM to SIN).
How far is it from Singapore to Na Thon (Ko Samui Island)?
The great-circle distance between Singapore Changi Airport (SIN) and Samui International Airport (USM) is 1,010 km (628 mi, 545 nautical miles). That is the straight-line distance; a real flight is a little longer because of air-traffic routing.
How long is the flight from SIN to USM?
A nonstop flight typically takes about 1h 45m. This is an estimate from the distance; actual block times depend on the aircraft, winds and the exact routing. USM is roughly northwest of SIN.
How is the SIN to USM route written in code?
The pair is written SIN-USM in IATA codes and WSSS-VTSM in ICAO codes, the form used on a flight plan. Singapore Changi Airport is SIN (WSSS), Samui International Airport is USM (VTSM).
| SIN | USM | |
|---|---|---|
| Airport | Singapore Changi Airport | Samui International Airport |
| ICAO code | WSSS | VTSM |
| Country | Singapore | Thailand |
| Elevation | 22 ft | 64 ft |
| Rank by connections | #12 | #626 |
WSSS starts with W, the ICAO prefix for the Malay Archipelago; VTSM starts with V, the prefix for South and Southeast Asia. How ICAO prefixes are laid out.
The two fields sit at almost the same height, within 42 ft (13 m) of each other.
Airlines flying SIN to USM
2 airlines appear on this route in the open route dataset, 2 of them still listed as active. Each row gives the IATA code, the ICAO code and the radio callsign, which is what an air traffic controller hears:
| IATA | Airline | ICAO | Callsign | Status |
|---|---|---|---|---|
| MI | SilkAir | SLK | Silkair | Active |
| PG | Bangkok Airways | BKP | Bangkok Air | Active |
A further 2 carriers sell this pair as a codeshare without operating it: QF, SQ.
Route and carrier data comes from the OpenFlights open dataset, regenerated here on . It is a historical snapshot of scheduled connections, not a live schedule, and it includes codeshare listings, so some carriers shown may no longer operate the route or exist. How we build this · Data and sources.
Frequently asked questions
How far is Singapore from Na Thon (Ko Samui Island)?
Singapore Changi Airport (SIN) and Samui International Airport (USM) are 1,010 km (628 mi, 545 nautical miles) apart in a straight line.
How long is the flight from SIN to USM?
A typical nonstop flight between SIN and USM takes about 1h 45m. Actual times vary with aircraft type, winds and routing.
What direction is USM from SIN?
Samui International Airport (USM) lies roughly northwest of Singapore Changi Airport (SIN).
Which airlines fly SIN to USM?
2 airlines appear on the SIN-USM route in the open dataset, including SilkAir, Bangkok Airways.
Related routes
Other routes from Singapore (SIN):
Other routes from Na Thon (Ko Samui Island) (USM):
SIN airport code · USM airport code · Busiest airports worldwide