Cheap flights from Bangkok to Koh Samui (BKK–USM)

BKKSuvarnabhumi Airport
Thailand

USMSamui International Airport
Thailand

Bangkok Airways flies Bangkok to Koh Samui (BKK–USM) nonstop and back, a great-circle distance of 466 km (289 mi).

From: BKK; Bangkok
To: USM; Koh Samui
Nonstop: Yes · 1 airline
Airlines: PG
Cheapest fare found: ฿2,332 one-way
Distance: 466 km (289 mi)

Data from the sources listed, updated:25 September 2026· How we verify

Bangkok to Koh Samui fares by month

Cheapest one-way fare found: ฿2,332 for November 2026 on Bangkok Airways, nonstop. Nonstop from ฿2,332.

Oct ’26฿2,831
Nov ’26฿2,332
Dec ’26฿2,831
Jan ’27฿2,821
Feb ’27฿2,812
Mar ’27฿2,809
Apr ’27฿2,785
May ’27฿2,796
Jun ’27฿2,827
Jul ’27฿2,800
Aug ’27฿2,799
Sept ’27฿2,830

Cheapest one-way fares per month of departure in the Aviasales price cache, found 11 October 2026. Fares change by the hour: the live fare is shown when you search.

When to fly BKK–USM

For Bangkok Suvarnabhumi (BKK) to Koh Samui (USM), November 2026 had the lowest fare found (฿2,332).

Bangkok to Koh Samui: frequently asked questions

Fares: Aviasales price cache, 11 October 2026.

How much is a flight from Bangkok Suvarnabhumi (BKK) to Koh Samui (USM)?

From ฿2,332 one-way, the cheapest fare found for November 2026 on Bangkok Airways, nonstop; nonstop from ฿2,332 (found 11 October 2026).

Which airlines fly BKK–USM direct?

Bangkok Airways.

What is the cheapest month to fly BKK–USM?

November 2026, at ฿2,332; the dearest month found was ฿2,831.

What is the time difference between Bangkok and Koh Samui?

None: Bangkok and Koh Samui keep the same time.

Koh Samui to Bangkok: the return flight (USM–BKK)

All 1 airline also flies USM–BKK nonstop.

Airlines flying BKK–USM nonstop

Airline	Type
Bangkok Airways PG	hybrid

BKK–USM route map

Great-circle distance 466 km (289 mi). Illustrative route, not an actual flight track.

Other ways to make this trip

Mode	Operator	From → to	Time
bus ferry	Lomprayah / Seatran joint tickets Overnight coach to Chumphon or Surat Thani, then ferry.	Bangkok (Khao San / Southern terminal) → Nathon or Maenam pier	12h–15h

Departure

Suvarnabhumi Airport

Suvarnabhumi (BKK), Bangkok. 2 terminals. In our data, 109 airlines fly nonstop from BKK to 137 destinations.

View BKK airport guide →

Arrival

Samui International Airport

Samui (USM), Koh Samui.

Weather in Koh Samui vs Bangkok

Koh Samui is warmer than Bangkok in 0 months and cooler in 11; the biggest gap is in February (29°C against 34°C). In October it averages 31°C in Koh Samui and 33°C in Bangkok.

Average daily high and low temperature in Koh Samui, °C
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

Koh Samui	29°	29°	30°	32°	33°	33°	32°	32°	32°	31°	30°	29°
Bangkok	33°	34°	35°	36°	35°	34°	34°	33°	33°	33°	33°	32°

Average daily highs. Climate normals from Ko Samui and Bangkok (Wikipedia, CC BY-SA), which cite the national weather services.

Onward from Koh Samui

Places you can't fly to nonstop from BKK, but can from USM — for a stopover or a second leg.

Related routes

Sources

en.wikipedia.org — airlines and destinations from BKK, checked 2026-09-25
en.wikipedia.org — airlines and destinations at USM, checked 2026-09-25
lomprayah.com — joint bus and ferry tickets Bangkok–Koh Samui
bangkokair.com — Bangkok Airways route network
en.wikipedia.org — airlines and destinations table: Samui routes
en.wikipedia.org — airlines and destinations table: Bangkok Airways routes from Suvarnabhumi
en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01

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