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Koh Samui to Bangkok flights in April 2027 from $89 USM → BKK, DMK

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

For departures in April 2027, the cheapest return found recently is $223 with Bangkok Airways, 5 Apr 2027 – 13 Apr 2027, found 2 days ago. The cheapest one-way found recently is $89 with Bangkok Airways, 27 Apr 2027, found 2 days ago.

Return

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

Cheapest return found recently

$223

5 Apr 2027 – 13 Apr 2027 · Bangkok Airways

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

out nonstop, back nonstop

found 2 days ago

See prices for these datesCheck today's price

Cheapest we hold, of any age

$173

11 Apr 2027 – 24 Apr 2027 · Bangkok Airways

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

out nonstop, back nonstop

found 6 days ago

See prices for these datesCheck today's price

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The cheapest dates in April 2027

DatesFromAirlineStopsFound
11 Apr 2027 – 24 Apr 2027$173Bangkok Airwaysout nonstop, back nonstopfound 6 days agoSee prices for these dates
5 Apr 2027 – 13 Apr 2027$223Bangkok Airwaysout nonstop, back nonstopfound 2 days agoSee prices for these dates

Every date we hold

2 departure dates

5 Apr 2027 – 13 Apr 2027: $223, found 2 days ago11 Apr 2027 – 24 Apr 2027: $173, found 6 days agoApr
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
5 Apr 2027 – 13 Apr 2027$223Bangkok AirwaysKoh Samui Airport (USM) → Don Mueang International Airport (DMK)out nonstop, back nonstopfound 2 days agoSee prices for these dates
11 Apr 2027 – 24 Apr 2027$173Bangkok AirwaysKoh Samui Airport (USM) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 6 days agoSee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $103.

November 2026From $103Cheapest seen7 departure dates14 Nov – 17 Nov · found 4 days agoSee prices for these datesEvery date in November 2026
December 2026From $22615 departure dates10 Dec – 14 Dec · found 4 days agoSee prices for these datesEvery date in December 2026
January 2027From $24313 departure dates31 Jan 2027 – 13 Feb 2027 · found 5 days agoSee prices for these datesEvery date in January 2027
February 2027From $1749 departure dates23 Feb 2027 – 6 Mar 2027 · found 3 days agoSee prices for these datesEvery date in February 2027
March 2027From $2264 departure dates2 Mar 2027 – 14 Mar 2027 · found 6 days agoSee prices for these datesEvery date in March 2027
April 2027From $1732 departure dates11 Apr 2027 – 24 Apr 2027 · found 6 days agoSee prices for these dates
May 2027From $1732 departure dates1 May 2027 – 12 May 2027 · found 8 days agoSee prices for these dates
June 2027From $1731 departure date16 Jun 2027 – 27 Jun 2027 · found 5 days agoSee prices for these dates
July 2027From $1741 departure date5 Jul 2027 – 15 Jul 2027 · found 6 days agoSee prices for these dates
August 2027From $1741 departure date1 Aug 2027 – 14 Aug 2027 · found 6 days agoSee prices for these dates

One-way

In April 2027, the cheapest one-way fare on each of 10 departure dates is usually $91 to $173. Across all 106 departure dates we hold on this route, it is usually $90 to $137. Of the 11 months with enough one-way fares to compare, 9 are usually cheaper than April 2027.

Cheapest one-way found recently

$89

27 Apr 2027 · Bangkok Airways

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

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 April 2027

DatesFromAirlineStopsFound
27 Apr 2027$89Bangkok Airwaysnonstopfound 2 days agoOpen this trip
15 Apr 2027$90Bangkok Airwaysnonstopfound 7 days agoOpen this trip
30 Apr 2027$90Bangkok Airwaysnonstopfound 5 days agoOpen this trip
29 Apr 2027$95Bangkok Airwaysnonstopfound 5 days agoOpen this trip
4 Apr 2027$144Bangkok Airwaysnonstopfound 2 days agoOpen this trip

Every date we hold

10 departure dates

3 Apr 2027: $145, found 7 days ago4 Apr 2027: $144, found 2 days ago5 Apr 2027: $145, found 3 days ago7 Apr 2027: $183, found 3 days ago8 Apr 2027: $182, found 2 days ago15 Apr 2027: $90, found 7 days ago16 Apr 2027: $183, found 3 days ago27 Apr 2027: $89, found 2 days ago29 Apr 2027: $95, found 5 days ago30 Apr 2027: $90, found 5 days agoApr
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
3 Apr 2027$145Bangkok AirwaysKoh Samui Airport (USM) → Don Mueang International Airport (DMK)nonstopfound 7 days agoOpen this trip
4 Apr 2027$144Bangkok AirwaysKoh Samui Airport (USM) → Don Mueang International Airport (DMK)nonstopfound 2 days agoOpen this trip
5 Apr 2027$145Bangkok AirwaysKoh Samui Airport (USM) → Suvarnabhumi Airport (BKK)nonstopfound 3 days agoOpen this trip
7 Apr 2027$183Bangkok AirwaysKoh Samui Airport (USM) → Suvarnabhumi Airport (BKK)nonstopfound 3 days agoOpen this trip
8 Apr 2027$182Bangkok AirwaysKoh Samui Airport (USM) → Suvarnabhumi Airport (BKK)nonstopfound 2 days agoOpen this trip
15 Apr 2027$90Bangkok AirwaysKoh Samui Airport (USM) → Suvarnabhumi Airport (BKK)nonstopfound 7 days agoOpen this trip
16 Apr 2027$183Bangkok AirwaysKoh Samui Airport (USM) → Don Mueang International Airport (DMK)nonstopfound 3 days agoOpen this trip
27 Apr 2027$89Bangkok AirwaysKoh Samui Airport (USM) → Suvarnabhumi Airport (BKK)nonstopfound 2 days agoOpen this trip
29 Apr 2027$95Bangkok AirwaysKoh Samui Airport (USM) → Suvarnabhumi Airport (BKK)nonstopfound 5 days agoOpen this trip
30 Apr 2027$90Bangkok AirwaysKoh Samui Airport (USM) → Suvarnabhumi Airport (BKK)nonstopfound 5 days agoOpen this trip

Which month looks cheapest?

November 2026 is the cheapest month — from $50.

November 2026From $50Cheapest seen17 departure dates19 Nov · found 2 days agoOpen this tripEvery date in November 2026
December 2026From $9015 departure dates23 Dec · found 5 days agoOpen this tripEvery date in December 2026
January 2027From $864 departure dates1 Jan 2027 · found 5 days agoOpen this tripEvery date in January 2027
February 2027From $899 departure dates6 Feb 2027 · found 2 days agoOpen this tripEvery date in February 2027
March 2027From $8726 departure dates11 Mar 2027 · found 2 days agoOpen this tripEvery date in March 2027
April 2027From $8910 departure dates27 Apr 2027 · found 2 days agoOpen this trip
May 2027From $896 departure dates1 May 2027 · found 2 days agoOpen this trip
June 2027From $906 departure dates3 Jun 2027 · found 5 days agoOpen this trip
July 2027From $895 departure dates18 Jul 2027 · found 2 days agoOpen this trip
August 2027From $904 departure dates5 Aug 2027 · found 5 days agoOpen this trip
September 2027From $901 departure date15 Sept 2027 · found 4 days agoOpen this trip
October 2027From $903 departure dates21 Oct 2027 · found 7 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