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Bangkok to Koh Samui in May 2027 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 $173 with Bangkok Airways, 1 May 2027 – 10 May 2027, found today. The cheapest one-way found recently is $84 with Bangkok Airways, 28 May 2027, found 9 hours ago.

Return

In May 2027, the cheapest return fare on each of 12 departure dates is usually $173 to $174. 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 May 2027.

Cheapest return found recently

$173

1 May 2027 – 10 May 2027 · Bangkok Airways

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

out nonstop, back nonstop

found today

See prices for these datesCheck today's price

Cheapest we hold, of any age

$173

18 May 2027 – 3 Jun 2027 · Bangkok Airways

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

out nonstop, back nonstop

found 3 days ago

See prices for these datesCheck today's price

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The cheapest dates in May 2027

DatesFromAirlineStopsFound
18 May 2027 – 3 Jun 2027$173Bangkok Airwaysout nonstop, back nonstopfound 3 days agoSee prices for these dates
1 May 2027 – 10 May 2027$173Bangkok Airwaysout nonstop, back nonstopfound todaySee prices for these dates
5 May 2027 – 20 May 2027$173Bangkok Airwaysout nonstop, back nonstopfound 6 days agoSee prices for these dates
10 May 2027 – 28 May 2027$173Bangkok Airwaysout nonstop, back nonstopfound todaySee prices for these dates
12 May 2027 – 14 May 2027$173Bangkok Airwaysout nonstop, back nonstopfound 4 days agoSee prices for these dates

Every date we hold

12 departure dates

1 May 2027 – 10 May 2027: $173, found today5 May 2027 – 20 May 2027: $173, found 6 days ago10 May 2027 – 28 May 2027: $173, found today11 May 2027 – 15 May 2027: $194, found 5 days ago12 May 2027 – 14 May 2027: $173, found 4 days ago14 May 2027 – 3 Jun 2027: $174, found 2 days ago18 May 2027 – 3 Jun 2027: $173, found 3 days ago23 May 2027 – 3 Jun 2027: $174, found 2 days ago24 May 2027 – 14 Jun 2027: $174, found 2 days ago25 May 2027 – 18 Jun 2027: $218, found 6 days ago27 May 2027 – 5 Jun 2027: $173, found 6 days ago30 May 2027 – 8 Jun 2027: $173, found 6 days agoMay
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 May 2027 – 10 May 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound todaySee prices for these dates
5 May 2027 – 20 May 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 6 days agoSee prices for these dates
10 May 2027 – 28 May 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound todaySee prices for these dates
11 May 2027 – 15 May 2027$194Bangkok AirwaysDon Mueang International Airport (DMK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 5 days agoSee prices for these dates
12 May 2027 – 14 May 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 4 days agoSee prices for these dates
14 May 2027 – 3 Jun 2027$174Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 2 days agoSee prices for these dates
18 May 2027 – 3 Jun 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 3 days agoSee prices for these dates
23 May 2027 – 3 Jun 2027$174Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 2 days agoSee prices for these dates
24 May 2027 – 14 Jun 2027$174Bangkok AirwaysDon Mueang International Airport (DMK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 2 days agoSee prices for these dates
25 May 2027 – 18 Jun 2027$218Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 6 days agoSee prices for these dates
27 May 2027 – 5 Jun 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 6 days agoSee prices for these dates
30 May 2027 – 8 Jun 2027$173Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)out nonstop, back nonstopfound 6 days agoSee 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 dates
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 datesEvery date in August 2027
September 2027From $1704 departure dates27 Sept 2027 – 10 Oct 2027 · found yesterdaySee prices for these dates

One-way

In May 2027, the cheapest one-way fare on each of 6 departure dates is usually $84 to $85. Across all 32 departure dates we hold on this route, it is usually $84 to $85. Of the 6 months with enough one-way fares to compare, 2 are usually cheaper than May 2027.

Cheapest one-way found recently

$84

28 May 2027 · Bangkok Airways

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

nonstop

found 9 hours ago

Open this tripCheck today's price

Cheapest we hold, of any age

$81

2 May 2027 · Bangkok Airways

Don Mueang International Airport (DMK) → Koh Samui Airport (USM)

nonstop

found 6 days ago

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The cheapest dates in May 2027

DatesFromAirlineStopsFound
2 May 2027$81Bangkok Airwaysnonstopfound 6 days agoOpen this trip
1 May 2027$84Bangkok Airwaysnonstopfound 4 days agoOpen this trip
28 May 2027$84Bangkok Airwaysnonstopfound 9 hours agoOpen this trip
3 May 2027$85Bangkok Airwaysnonstopfound 4 days agoOpen this trip
6 May 2027$85Bangkok Airwaysnonstopfound 3 days agoOpen this trip

Every date we hold

6 departure dates

1 May 2027: $84, found 4 days ago2 May 2027: $81, found 6 days ago3 May 2027: $85, found 4 days ago6 May 2027: $85, found 3 days ago24 May 2027: $86, found 2 days ago28 May 2027: $84, found 9 hours agoMay
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 May 2027$84Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)nonstopfound 4 days agoOpen this trip
2 May 2027$81Bangkok AirwaysDon Mueang International Airport (DMK) → Koh Samui Airport (USM)nonstopfound 6 days agoOpen this trip
3 May 2027$85Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)nonstopfound 4 days agoOpen this trip
6 May 2027$85Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)nonstopfound 3 days agoOpen this trip
24 May 2027$86Bangkok AirwaysDon Mueang International Airport (DMK) → Koh Samui Airport (USM)nonstopfound 2 days agoOpen this trip
28 May 2027$84Bangkok AirwaysSuvarnabhumi Airport (BKK) → Koh Samui Airport (USM)nonstopfound 9 hours 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 6 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 trip
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 tripEvery date in August 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