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Bangkok to Koh Samui in August 2027 BKK, DMK → USM

Suvarnabhumi Airport (BKK), Don Mueang International Airport (DMK) → Koh Samui Airport (USM)

For departures in August 2027, the cheapest return found recently is $170 with Bangkok Airways, 1 Aug 2027 – 7 Aug 2027, found yesterday. The cheapest one-way found recently is $85 with Bangkok Airways, 28 Aug 2027, found 3 days ago.

Return

In August 2027, the cheapest return fare on each of 7 departure dates is usually $170 to $188. Across all 185 departure dates we hold on this route, it is usually $173 to $245. Of the 12 months with enough return fares to compare, 2 are usually cheaper than August 2027.

Cheapest return found recently

$170

1 Aug 2027 – 7 Aug 2027 · Bangkok Airways

Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)

out nonstop, back nonstop

found yesterday

See prices for these datesCheck today's price

It is also the cheapest return we hold, of any age.

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The cheapest dates in August 2027

DatesFromAirlineStopsFound
1 Aug 2027 – 7 Aug 2027$170Bangkok Airwaysout nonstop, back nonstopfound yesterdaySee prices for these dates
2 Aug 2027 – 12 Aug 2027$170Bangkok Airwaysout nonstop, back nonstopfound yesterdaySee prices for these dates
10 Aug 2027 – 16 Aug 2027$170Bangkok Airwaysout nonstop, back nonstopfound yesterdaySee prices for these dates
15 Aug 2027 – 5 Sept 2027$173Bangkok Airwaysout nonstop, back nonstopfound 2 days agoSee prices for these dates
17 Aug 2027 – 31 Aug 2027$173Bangkok Airwaysout nonstop, back nonstopfound 5 days agoSee prices for these dates

Every date we hold

7 departure dates

1 Aug 2027 – 7 Aug 2027: $170, found yesterday2 Aug 2027 – 12 Aug 2027: $170, found yesterday10 Aug 2027 – 16 Aug 2027: $170, found yesterday15 Aug 2027 – 5 Sept 2027: $173, found 2 days ago16 Aug 2027 – 27 Aug 2027: $202, found 5 days ago17 Aug 2027 – 31 Aug 2027: $173, found 5 days ago20 Aug 2027 – 24 Sept 2027: $208, found yesterdayAug
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Aug 2027 – 7 Aug 2027$170Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound yesterdaySee prices for these dates
2 Aug 2027 – 12 Aug 2027$170Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound yesterdaySee prices for these dates
10 Aug 2027 – 16 Aug 2027$170Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound yesterdaySee prices for these dates
15 Aug 2027 – 5 Sept 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 2 days agoSee prices for these dates
16 Aug 2027 – 27 Aug 2027$202Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 5 days agoSee prices for these dates
17 Aug 2027 – 31 Aug 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 5 days agoSee prices for these dates
20 Aug 2027 – 24 Sept 2027$208Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound yesterdaySee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $154.

October 2026From $1639 departure dates27 Oct – 4 Nov · found 3 days agoSee prices for these datesEvery date in October 2026
November 2026From $154Cheapest seen26 departure dates2 Nov – 7 Nov · found 5 days agoSee prices for these datesEvery date in November 2026
December 2026From $17225 departure dates2 Dec – 24 Dec · found 3 days agoSee prices for these datesEvery date in December 2026
January 2027From $17328 departure dates25 Jan 2027 – 6 Mar 2027 · found 6 days agoSee prices for these datesEvery date in January 2027
February 2027From $17023 departure dates22 Feb 2027 – 8 Mar 2027 · found yesterdaySee prices for these datesEvery date in February 2027
March 2027From $16519 departure dates14 Mar 2027 – 23 Mar 2027 · found 2 days agoSee prices for these datesEvery date in March 2027
April 2027From $17018 departure dates6 Apr 2027 – 15 Apr 2027 · found todaySee prices for these datesEvery date in April 2027
May 2027From $17312 departure dates18 May 2027 – 3 Jun 2027 · found 3 days agoSee prices for these datesEvery date in May 2027
June 2027From $1706 departure dates25 Jun 2027 – 16 Jul 2027 · found yesterdaySee prices for these dates
July 2027From $1708 departure dates30 Jul 2027 – 5 Aug 2027 · found yesterdaySee prices for these datesEvery date in July 2027
August 2027From $1707 departure dates1 Aug 2027 – 7 Aug 2027 · found yesterdaySee prices for these dates
September 2027From $1704 departure dates27 Sept 2027 – 10 Oct 2027 · found 22 hours agoSee prices for these dates

One-way

We hold one-way fares on only 2 departure dates in August 2027, too few to say what one usually costs.

Cheapest one-way found recently

$85

28 Aug 2027 · Bangkok Airways

Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)

nonstop

found 3 days ago

Open this tripCheck today's price

It is also the cheapest one-way we hold, of any age.

FareTell may earn a commission when you book through a partner.

The cheapest dates in August 2027

DatesFromAirlineStopsFound
4 Aug 2027$85Bangkok Airwaysnonstopfound 6 days agoOpen this trip
28 Aug 2027$85Bangkok Airwaysnonstopfound 3 days agoOpen this trip

Every date we hold

2 departure dates

4 Aug 2027: $85, found 6 days ago28 Aug 2027: $85, found 3 days agoAug
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
4 Aug 2027$85Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)nonstopfound 6 days agoOpen this trip
28 Aug 2027$85Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)nonstopfound 3 days agoOpen this trip

Which month looks cheapest?

November 2026 is the cheapest month — from $75.

October 2026From $843 departure dates20 Oct · found yesterdayOpen this tripEvery date in October 2026
November 2026From $75Cheapest seen3 departure dates5 Nov · found 4 hours agoOpen this tripEvery date in November 2026
April 2027From $846 departure dates13 Apr 2027 · found yesterdayOpen this tripEvery date in April 2027
May 2027From $816 departure dates2 May 2027 · found 6 days agoOpen this tripEvery date in May 2027
June 2027From $844 departure dates3 Jun 2027 · found 6 days agoOpen this trip
July 2027From $848 departure dates9 Jul 2027 · found 5 days agoOpen this tripEvery date in July 2027
August 2027From $852 departure dates4 Aug 2027 · found 6 days agoOpen this trip

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work