Bangkok to Koh Samui flights in April 2027 from $83 BKK, DMK → USM

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

For departures in April 2027, the cheapest return found recently is $164 with Bangkok Airways, 23 Apr 2027 – 21 May 2027, found 15 hours ago. The cheapest one-way found recently is $83 with Bangkok Airways, 13 Apr 2027, found today.

Return

In April 2027, the cheapest return fare on each of 23 departure dates is usually $172 to $174. Across all 219 departure dates we hold on this route, it is usually $172 to $245. Of the 12 months with enough return fares to compare, 4 are usually cheaper than April 2027.

Cheapest return found recently

$164

23 Apr 2027 – 21 May 2027 · Bangkok Airways

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

out nonstop, back nonstop

found 15 hours ago

See prices for these dates Check today's price

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

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The cheapest dates in April 2027

Dates	From	Airline	Stops	Found
23 Apr 2027 – 21 May 2027	$164	Bangkok Airways	out nonstop, back nonstop	found 15 hours ago	See prices for these dates
17 Apr 2027 – 29 Apr 2027	$171	Bangkok Airways	out nonstop, back nonstop	found yesterday	See prices for these dates
6 Apr 2027 – 17 Apr 2027	$172	Bangkok Airways	out nonstop, back nonstop	found yesterday	See prices for these dates
9 Apr 2027 – 21 Apr 2027	$172	Bangkok Airways	out nonstop, back nonstop	found yesterday	See prices for these dates
13 Apr 2027 – 30 Apr 2027	$172	Bangkok Airways	out nonstop, back nonstop	found today	See prices for these dates

Every date we hold

23 departure dates

See the chart as a table

The cheapest price seen for each departure date — per traveler in Economy.
Dates	From	Airline	Airports	Stops	Found
1 Apr 2027 – 11 Apr 2027	$174	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 4 days ago	See prices for these dates
2 Apr 2027 – 9 Apr 2027	$265	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 6 days ago	See prices for these dates
3 Apr 2027 – 10 Apr 2027	$174	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 5 days ago	See prices for these dates
4 Apr 2027 – 14 Apr 2027	$173	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 2 days ago	See prices for these dates
6 Apr 2027 – 17 Apr 2027	$172	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found yesterday	See prices for these dates
7 Apr 2027 – 15 Apr 2027	$173	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 2 days ago	See prices for these dates
8 Apr 2027 – 16 Apr 2027	$262	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found yesterday	See prices for these dates
9 Apr 2027 – 21 Apr 2027	$172	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found yesterday	See prices for these dates
10 Apr 2027 – 24 Apr 2027	$174	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 6 days ago	See prices for these dates
11 Apr 2027 – 22 Apr 2027	$173	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 4 days ago	See prices for these dates
12 Apr 2027 – 28 Apr 2027	$173	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 3 days ago	See prices for these dates
13 Apr 2027 – 30 Apr 2027	$172	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found today	See prices for these dates
15 Apr 2027 – 25 Apr 2027	$172	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found yesterday	See prices for these dates
16 Apr 2027 – 28 Apr 2027	$172	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found today	See prices for these dates
17 Apr 2027 – 29 Apr 2027	$171	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found yesterday	See prices for these dates
18 Apr 2027 – 30 Apr 2027	$172	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found yesterday	See prices for these dates
19 Apr 2027 – 1 May 2027	$173	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 2 days ago	See prices for these dates
20 Apr 2027 – 29 Apr 2027	$174	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 3 days ago	See prices for these dates
21 Apr 2027 – 2 May 2027	$172	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found yesterday	See prices for these dates
23 Apr 2027 – 21 May 2027	$164	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 15 hours ago	See prices for these dates
24 Apr 2027 – 4 May 2027	$173	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 6 days ago	See prices for these dates
25 Apr 2027 – 2 May 2027	$173	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 4 days ago	See prices for these dates
30 Apr 2027 – 15 May 2027	$172	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	out nonstop, back nonstop	found 2 days ago	See prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $104.

November 2026From $104Cheapest seen11 departure dates15 Nov – 15 Nov · found 5 days agoSee prices for these dates Every date in November 2026

December 2026From $21629 departure dates12 Dec – 23 Dec · found 5 days agoSee prices for these dates Every date in December 2026

January 2027From $17431 departure dates27 Jan 2027 – 10 Mar 2027 · found 6 days agoSee prices for these dates Every date in January 2027

February 2027From $17027 departure dates24 Feb 2027 – 22 Mar 2027 · found yesterdaySee prices for these dates Every date in February 2027

March 2027From $16827 departure dates8 Mar 2027 – 21 Mar 2027 · found 4 days agoSee prices for these dates Every date in March 2027

April 2027From $16423 departure dates23 Apr 2027 – 21 May 2027 · found 15 hours agoSee prices for these dates

May 2027From $17116 departure dates3 May 2027 – 15 May 2027 · found todaySee prices for these dates Every date in May 2027

June 2027From $17114 departure dates1 Jun 2027 – 15 Jun 2027 · found yesterdaySee prices for these dates Every date in June 2027

July 2027From $15917 departure dates17 Jul 2027 – 4 Aug 2027 · found 3 days agoSee prices for these dates Every date in July 2027

August 2027From $16716 departure dates20 Aug 2027 – 29 Aug 2027 · found 6 days agoSee prices for these dates Every date in August 2027

September 2027From $1723 departure dates3 Sept 2027 – 28 Sept 2027 · found 2 days agoSee prices for these dates

October 2027From $1735 departure dates2 Oct 2027 – 16 Oct 2027 · found 2 days agoSee prices for these dates

One-way

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

Cheapest one-way found recently

$83

13 Apr 2027 · Bangkok Airways

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

nonstop

found today

Open this trip Check 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 April 2027

Dates	From	Airline	Stops	Found
13 Apr 2027	$83	Bangkok Airways	nonstop	found today	Open this trip
15 Apr 2027	$84	Bangkok Airways	nonstop	found 5 days ago	Open this trip

Every date we hold

2 departure dates

See the chart as a table

The cheapest price seen for each departure date — per traveler in Economy.
Dates	From	Airline	Airports	Stops	Found
13 Apr 2027	$83	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	nonstop	found today	Open this trip
15 Apr 2027	$84	Bangkok Airways	Suvarnabhumi Airport (BKK) → Koh Samui Airport (USM)	nonstop	found 5 days ago	Open this trip

Which month looks cheapest?

November 2026 is the cheapest month — from $44.

November 2026From $44Cheapest seen3 departure dates16 Nov · found 2 days agoOpen this trip Every date in November 2026

April 2027From $832 departure dates13 Apr 2027 · found todayOpen this trip

May 2027From $787 departure dates1 May 2027 · found 16 hours agoOpen this trip Every date in May 2027

June 2027From $846 departure dates6 Jun 2027 · found 6 days agoOpen this trip Every date in June 2027

July 2027From $844 departure dates3 Jul 2027 · found 2 days agoOpen this trip Every date in July 2027

August 2027From $833 departure dates7 Aug 2027 · found todayOpen this trip Every date in August 2027

September 2027From $841 departure date4 Sept 2027 · found todayOpen 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