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Bangkok to Koh Samui flights in May 2027 from $81 BKK, DMK → USM

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

For departures in May 2027, the cheapest return found recently is $171 with Bangkok Airways, 30 May 2027 – 28 Jun 2027, found yesterday. The cheapest one-way found recently is $81 with Bangkok Airways, 1 May 2027, found 2 days ago.

Return

In May 2027, the cheapest return fare on each of 14 departure dates is usually $172 to $173. Across all 223 departure dates we hold on this route, it is usually $173 to $243. Of the 11 months with enough return fares to compare, May 2027 is usually the cheapest.

Cheapest return found recently

$171

30 May 2027 – 28 Jun 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 May 2027

DatesFromAirlineStopsFound
30 May 2027 – 28 Jun 2027$171Bangkok Airwaysout nonstop, back nonstopfound yesterdaySee prices for these dates
2 May 2027 – 10 May 2027$172Bangkok Airwaysout nonstop, back nonstopfound 2 days agoSee prices for these dates
22 May 2027 – 24 Jun 2027$172Bangkok Airwaysout nonstop, back nonstopfound 2 days agoSee prices for these dates
26 May 2027 – 9 Jun 2027$172Bangkok Airwaysout nonstop, back nonstopfound 3 days agoSee prices for these dates
3 May 2027 – 15 May 2027$173Bangkok Airwaysout nonstop, back nonstopfound 3 days agoSee prices for these dates

Every date we hold

14 departure dates

1 May 2027 – 8 May 2027: $174, found 4 days ago2 May 2027 – 10 May 2027: $172, found 2 days ago3 May 2027 – 15 May 2027: $173, found 3 days ago4 May 2027 – 20 May 2027: $173, found 4 days ago7 May 2027 – 14 May 2027: $173, found 6 days ago8 May 2027 – 22 May 2027: $173, found 3 days ago10 May 2027 – 26 May 2027: $183, found 2 days ago15 May 2027 – 29 May 2027: $173, found 3 days ago22 May 2027 – 24 Jun 2027: $172, found 2 days ago24 May 2027 – 12 Jun 2027: $173, found 6 days ago25 May 2027 – 21 Jun 2027: $179, found 5 days ago26 May 2027 – 9 Jun 2027: $172, found 3 days ago28 May 2027 – 11 Jun 2027: $173, found 4 days ago30 May 2027 – 28 Jun 2027: $171, found yesterdayMay
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 May 2027 – 8 May 2027$174Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 4 days agoSee prices for these dates
2 May 2027 – 10 May 2027$172Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 2 days agoSee prices for these dates
3 May 2027 – 15 May 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 3 days agoSee prices for these dates
4 May 2027 – 20 May 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 4 days agoSee prices for these dates
7 May 2027 – 14 May 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 6 days agoSee prices for these dates
8 May 2027 – 22 May 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 3 days agoSee prices for these dates
10 May 2027 – 26 May 2027$183Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 2 days agoSee prices for these dates
15 May 2027 – 29 May 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 3 days agoSee prices for these dates
22 May 2027 – 24 Jun 2027$172Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 2 days agoSee prices for these dates
24 May 2027 – 12 Jun 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 6 days agoSee prices for these dates
25 May 2027 – 21 Jun 2027$179Bangkok AirwaysDon Mueang International Airport (DMK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 5 days agoSee prices for these dates
26 May 2027 – 9 Jun 2027$172Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 3 days agoSee prices for these dates
28 May 2027 – 11 Jun 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 4 days agoSee prices for these dates
30 May 2027 – 28 Jun 2027$171Bangkok 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 $104.

November 2026From $104Cheapest seen14 departure dates15 Nov – 15 Nov · found 5 days agoSee prices for these datesEvery date in November 2026
December 2026From $20730 departure dates9 Dec – 24 Dec · found 7 days agoSee prices for these datesEvery date in December 2026
January 2027From $17430 departure dates27 Jan 2027 – 10 Mar 2027 · found 6 days agoSee prices for these datesEvery date in January 2027
February 2027From $17327 departure dates17 Feb 2027 – 16 Mar 2027 · found 2 days agoSee prices for these datesEvery date in February 2027
March 2027From $16326 departure dates3 Mar 2027 – 11 Mar 2027 · found 7 days agoSee prices for these datesEvery date in March 2027
April 2027From $16623 departure dates21 Apr 2027 – 20 May 2027 · found 5 days agoSee prices for these datesEvery date in April 2027
May 2027From $17114 departure dates30 May 2027 – 28 Jun 2027 · found yesterdaySee prices for these dates
June 2027From $17214 departure dates3 Jun 2027 – 24 Jun 2027 · found 2 days agoSee prices for these datesEvery date in June 2027
July 2027From $15920 departure dates17 Jul 2027 – 4 Aug 2027 · found 3 days agoSee prices for these datesEvery date in July 2027
August 2027From $16716 departure dates20 Aug 2027 – 29 Aug 2027 · found 6 days agoSee prices for these datesEvery date in August 2027
September 2027From $1722 departure dates3 Sept 2027 – 28 Sept 2027 · found 2 days agoSee prices for these dates
October 2027From $1737 departure dates2 Oct 2027 – 16 Oct 2027 · found 2 days agoSee prices for these datesEvery date in October 2027

One-way

In May 2027, the cheapest one-way fare on each of 7 departure dates is usually $84 to $84. Across all 26 departure dates we hold on this route, it is usually $84 to $84. Of the 4 months with enough one-way fares to compare, 1 is usually cheaper than May 2027.

Cheapest one-way found recently

$81

1 May 2027 · Bangkok Airways

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

nonstop

found 2 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 May 2027

DatesFromAirlineStopsFound
1 May 2027$81Bangkok Airwaysnonstopfound 2 days agoOpen this trip
2 May 2027$84Bangkok Airwaysnonstopfound 3 days agoOpen this trip
3 May 2027$84Bangkok Airwaysnonstopfound 7 days agoOpen this trip
25 May 2027$84Bangkok Airwaysnonstopfound 2 days agoOpen this trip
26 May 2027$84Bangkok Airwaysnonstopfound 2 days agoOpen this trip

Every date we hold

7 departure dates

1 May 2027: $81, found 2 days ago2 May 2027: $84, found 3 days ago3 May 2027: $84, found 7 days ago24 May 2027: $85, found 3 days ago25 May 2027: $84, found 2 days ago26 May 2027: $84, found 2 days ago30 May 2027: $84, found 3 days agoMay
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 May 2027$81Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)nonstopfound 2 days agoOpen this trip
2 May 2027$84Bangkok AirwaysDon Mueang International Airport (DMK) → Koh Samui Airport (USM)nonstopfound 3 days agoOpen this trip
3 May 2027$84Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)nonstopfound 7 days agoOpen this trip
24 May 2027$85Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)nonstopfound 3 days agoOpen this trip
25 May 2027$84Bangkok AirwaysDon Mueang International Airport (DMK) → Koh Samui Airport (USM)nonstopfound 2 days agoOpen this trip
26 May 2027$84Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)nonstopfound 2 days agoOpen this trip
30 May 2027$84Bangkok AirwaysDon Mueang International Airport (DMK) → Koh Samui Airport (USM)nonstopfound 3 days agoOpen this trip

Which month looks cheapest?

November 2026 is the cheapest month — from $40.

November 2026From $40Cheapest seen4 departure dates19 Nov · found 2 days agoOpen this tripEvery date in November 2026
April 2027From $841 departure date15 Apr 2027 · found 5 days agoOpen this tripEvery date in April 2027
May 2027From $817 departure dates1 May 2027 · found 2 days agoOpen this trip
June 2027From $846 departure dates6 Jun 2027 · found 6 days agoOpen this tripEvery date in June 2027
July 2027From $844 departure dates3 Jul 2027 · found 2 days agoOpen this tripEvery date in July 2027
August 2027From $842 departure dates12 Aug 2027 · found 6 days agoOpen this tripEvery date in August 2027
September 2027From $841 departure date4 Sept 2027 · found 3 days agoOpen this trip
October 2027From $851 departure date6 Oct 2027 · found 7 days agoOpen this tripEvery date in October 2027

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