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Siem Reap to Bangkok flights in December 2026 from $79 SAI → BKK, DMK

Siem Reap International Airport (SAI) → Suvarnabhumi Airport (BKK), Don Mueang International Airport (DMK)

For departures in December 2026, the cheapest return found recently is $243 with Thai AirAsia, 2 Dec – 11 Dec, found 3 days ago. The cheapest one-way found recently is $79 with Air Cambodia, 31 Dec, found 2 days ago.

Return

In December 2026, the cheapest return fare on each of 3 departure dates is usually $241 to $249. Across all 17 departure dates we hold on this route, it is usually $175 to $253. Of the 3 months with enough return fares to compare, December 2026 is usually the most expensive.

Cheapest return found recently

$243

2 Dec – 11 Dec · Thai AirAsia

Siem Reap International Airport (SAI) → Don Mueang International Airport (DMK)

out nonstop, back nonstop

found 3 days ago

See prices for these datesCheck today's price

Cheapest we hold, of any age

$238

9 Dec – 17 Dec · Thai AirAsia

Siem Reap International Airport (SAI) → Don Mueang International Airport (DMK)

out nonstop, back nonstop

found 4 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
9 Dec – 17 Dec$238Thai AirAsiaout nonstop, back nonstopfound 4 days agoSee prices for these dates
2 Dec – 11 Dec$243Thai AirAsiaout nonstop, back nonstopfound 3 days agoSee prices for these dates
1 Dec – 17 Dec$255Emiratesout nonstop, back nonstopfound 4 days agoSee prices for these dates

Every date we hold

3 departure dates

1 Dec – 17 Dec: $255, found 4 days ago2 Dec – 11 Dec: $243, found 3 days ago9 Dec – 17 Dec: $238, found 4 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 17 Dec$255EmiratesSiem Reap International Airport (SAI) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound 4 days agoSee prices for these dates
2 Dec – 11 Dec$243Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)out nonstop, back nonstopfound 3 days agoSee prices for these dates
9 Dec – 17 Dec$238Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)out nonstop, back nonstopfound 4 days agoSee prices for these dates

Which month looks cheapest?

February 2027 is the cheapest month — from $164.

November 2026From $2682 departure dates16 Nov – 4 Dec · found 8 days agoSee prices for these datesEvery date in November 2026
December 2026From $2383 departure dates9 Dec – 17 Dec · found 4 days agoSee prices for these dates
January 2027From $1665 departure dates23 Jan 2027 – 8 Feb 2027 · found 7 days agoSee prices for these datesEvery date in January 2027
February 2027From $164Cheapest seen4 departure dates23 Feb 2027 – 2 Mar 2027 · found 4 days agoSee prices for these datesEvery date in February 2027
March 2027From $1742 departure dates2 Mar 2027 – 15 Mar 2027 · found 5 days agoSee prices for these datesEvery date in March 2027
July 2027From $2251 departure date15 Jul 2027 – 12 Aug 2027 · found 5 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 9 departure dates is usually $113 to $113. Across all 61 departure dates we hold on this route, it is usually $84 to $114. Of the 5 months with enough one-way fares to compare, 3 are usually cheaper than December 2026.

Cheapest one-way found recently

$79

31 Dec · Air Cambodia

Siem Reap International Airport (SAI) → 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.

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
31 Dec$79Air Cambodianonstopfound 2 days agoOpen this trip
26 Dec$84Air Cambodianonstopfound 4 days agoOpen this trip
4 Dec$113Thai AirAsianonstopfound 3 days agoOpen this trip
8 Dec$113Thai AirAsianonstopfound 3 days agoOpen this trip
12 Dec$113Thai AirAsianonstopfound 2 days agoOpen this trip

Every date we hold

9 departure dates

4 Dec: $113, found 3 days ago8 Dec: $113, found 3 days ago12 Dec: $113, found 2 days ago13 Dec: $113, found 2 days ago14 Dec: $113, found 5 days ago16 Dec: $114, found 3 days ago26 Dec: $84, found 4 days ago29 Dec: $123, found 4 days ago31 Dec: $79, found 2 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
4 Dec$113Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)nonstopfound 3 days agoOpen this trip
8 Dec$113Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)nonstopfound 3 days agoOpen this trip
12 Dec$113Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)nonstopfound 2 days agoOpen this trip
13 Dec$113Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)nonstopfound 2 days agoOpen this trip
14 Dec$113Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)nonstopfound 5 days agoOpen this trip
16 Dec$114Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)nonstopfound 3 days agoOpen this trip
26 Dec$84Air CambodiaSiem Reap International Airport (SAI) → Suvarnabhumi Airport (BKK)nonstopfound 4 days agoOpen this trip
29 Dec$123Air CambodiaSiem Reap International Airport (SAI) → Suvarnabhumi Airport (BKK)nonstopfound 4 days agoOpen this trip
31 Dec$79Air CambodiaSiem Reap International Airport (SAI) → Suvarnabhumi Airport (BKK)nonstopfound 2 days agoOpen this trip

Which month looks cheapest?

March 2027 is the cheapest month — from $79.

November 2026From $10510 departure dates30 Nov · found 6 days agoOpen this tripEvery date in November 2026
December 2026From $799 departure dates31 Dec · found 2 days agoOpen this trip
January 2027From $8310 departure dates23 Jan 2027 · found 2 days agoOpen this tripEvery date in January 2027
February 2027From $7913 departure dates8 Feb 2027 · found 3 days agoOpen this tripEvery date in February 2027
March 2027From $79Cheapest seen12 departure dates20 Mar 2027 · found 2 days agoOpen this tripEvery date in March 2027
May 2027From $1091 departure date6 May 2027 · found 6 days agoOpen this trip
June 2027From $1042 departure dates11 Jun 2027 · found 2 days agoOpen this trip
July 2027From $1072 departure dates17 Jul 2027 · found 6 days agoOpen this trip
August 2027From $1041 departure date24 Aug 2027 · found 7 days agoOpen this trip
October 2027From $1201 departure date18 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