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Siem Reap to Bangkok in December 2026 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 $269 with Cambodia Airways, 18 Dec – 21 Dec, found yesterday. The cheapest one-way found recently is $110 with Thai AirAsia, 2 Dec, found 2 days ago.

Return

In December 2026, the cheapest return fare on each of 3 departure dates is usually $208 to $242. Across all 8 departure dates we hold on this route, it is usually $201 to $219.

Cheapest return found recently

$269

18 Dec – 21 Dec · Cambodia Airways

Siem Reap International Airport (SAI) → Suvarnabhumi Airport (BKK)

out nonstop, back nonstop

found yesterday

See prices for these datesCheck today's price

Cheapest we hold, of any age

$201

16 Dec – 13 Jan 2027 · Thai AirAsia

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

out nonstop, back nonstop

found 6 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
16 Dec – 13 Jan 2027$201Thai AirAsiaout nonstop, back nonstopfound 6 days agoSee prices for these dates
2 Dec – 10 Dec$215Thai AirAsiaout nonstop, back nonstopfound 5 days agoSee prices for these dates
18 Dec – 21 Dec$269Cambodia Airwaysout nonstop, back nonstopfound yesterdaySee prices for these dates

Every date we hold

3 departure dates

2 Dec – 10 Dec: $215, found 5 days ago16 Dec – 13 Jan 2027: $201, found 6 days ago18 Dec – 21 Dec: $269, found yesterdayDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
2 Dec – 10 Dec$215Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)out nonstop, back nonstopfound 5 days agoSee prices for these dates
16 Dec – 13 Jan 2027$201Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)out nonstop, back nonstopfound 6 days agoSee prices for these dates
18 Dec – 21 Dec$269Cambodia AirwaysSiem Reap International Airport (SAI) → Suvarnabhumi Airport (BKK)out nonstop, back nonstopfound yesterdaySee prices for these dates

Which month looks cheapest?

January 2027 is the cheapest month — from $191.

November 2026From $2092 departure dates1 Nov – 4 Nov · found 2 days agoSee prices for these datesEvery date in November 2026
December 2026From $2013 departure dates16 Dec – 13 Jan 2027 · found 6 days agoSee prices for these dates
January 2027From $191Cheapest seen1 departure date20 Jan 2027 – 27 Jan 2027 · found 17 hours agoSee prices for these datesEvery date in January 2027
March 2027From $1992 departure dates3 Mar 2027 – 6 Mar 2027 · found 4 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 7 departure dates is usually $140 to $165. Across all 59 departure dates we hold on this route, it is usually $104 to $126. Of the 7 months with enough one-way fares to compare, 5 are usually cheaper than December 2026.

Cheapest one-way found recently

$110

2 Dec · Thai AirAsia

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

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
2 Dec$110Thai AirAsianonstopfound 2 days agoOpen this trip
6 Dec$127THAI Airwaysnonstopfound 6 days agoOpen this trip
3 Dec$153Thai AirAsianonstopfound 5 days agoOpen this trip
7 Dec$155Cambodia Airwaysnonstopfound 4 days agoOpen this trip
23 Dec$159Thai AirAsianonstopfound 5 days agoOpen this trip

Every date we hold

7 departure dates

2 Dec: $110, found 2 days ago3 Dec: $153, found 5 days ago6 Dec: $127, found 6 days ago7 Dec: $155, found 4 days ago9 Dec: $170, found 6 days ago23 Dec: $159, found 5 days ago30 Dec: $182, found 2 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
2 Dec$110Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)nonstopfound 2 days agoOpen this trip
3 Dec$153Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)nonstopfound 5 days agoOpen this trip
6 Dec$127THAI AirwaysSiem Reap International Airport (SAI) → Suvarnabhumi Airport (BKK)nonstopfound 6 days agoOpen this trip
7 Dec$155Cambodia AirwaysSiem Reap International Airport (SAI) → Suvarnabhumi Airport (BKK)nonstopfound 4 days agoOpen this trip
9 Dec$170Cambodia AirwaysSiem Reap International Airport (SAI) → Suvarnabhumi Airport (BKK)nonstopfound 6 days agoOpen this trip
23 Dec$159Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)nonstopfound 5 days agoOpen this trip
30 Dec$182Thai AirAsiaSiem Reap International Airport (SAI) → Don Mueang International Airport (DMK)nonstopfound 2 days agoOpen this trip

Which month looks cheapest?

November 2026 is the cheapest month — from $99.

October 2026From $1018 departure dates26 Oct · found yesterdayOpen this tripEvery date in October 2026
November 2026From $99Cheapest seen12 departure dates9 Nov · found yesterdayOpen this tripEvery date in November 2026
December 2026From $1107 departure dates2 Dec · found 2 days agoOpen this trip
January 2027From $10310 departure dates18 Jan 2027 · found yesterdayOpen this tripEvery date in January 2027
February 2027From $9912 departure dates5 Feb 2027 · found 22 hours agoOpen this tripEvery date in February 2027
March 2027From $1025 departure dates27 Mar 2027 · found 4 days agoOpen this trip
April 2027From $1025 departure dates20 Apr 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