Roundtrip
🇰🇭Siem Reap
Cambodia
City
Sep 25FriSep 30Wed
5 nights27°
Roundtrip fare
฿6,589
Steal
฿8,092-19%฿1,503 below avg
Thai AirAsiaCheapest Time to Fly to Siem Reap
Compare the cheapest months to fly from Bangkok to Siem Reap in THB. See separate one-way and roundtrip fare ranges, sample sizes and current deals.
One way from ฿3,126
Roundtrip from ฿6,589
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Current deals to Siem Reap · Roundtrip
Outbound and return flights together in one total fare · Available fares behind the monthly comparison
Thai AirAsiaRoundtrip
Last Minute
🇰🇭Siem Reap
Cambodia
City
Sep 18FriSep 23Wed
5 nights27°
Roundtrip fare
฿6,591
Steal
฿8,092-19%฿1,501 below avg
Thai AirAsiaRoundtrip
Holiday
🇰🇭Siem Reap
Cambodia
City
Sep 23WedSep 28Mon
5 nights27°
Roundtrip fare
฿6,591
Steal
฿8,092-19%฿1,501 below avg
Thai AirAsiaRoundtrip
Holiday
🇰🇭Siem Reap
Cambodia
City
Sep 23WedSep 30Wed
7 nights27°
Roundtrip fare
฿6,591
Steal
฿8,092-19%฿1,501 below avg
Thai AirAsiaRoundtrip
Last Minute
🇰🇭Siem Reap
Cambodia
City
Sep 16WedSep 21Mon
5 nights27°
Roundtrip fare
฿6,596
Steal
฿8,092-18%฿1,496 below avg
Thai AirAsiaRoundtrip
Last Minute
🇰🇭Siem Reap
Cambodia
City
Sep 19SatSep 24Thu
5 nights27°
Roundtrip fare
฿6,596
Steal
฿8,092-18%฿1,496 below avg
Thai AirAsiaRoundtrip
Last Minute
🇰🇭Siem Reap
Cambodia
City
Sep 19SatSep 23Wed
4 nights27°
Roundtrip fare
฿6,596
Steal
฿8,092-18%฿1,496 below avg
Thai AirAsiaRoundtrip
Holiday
🇰🇭Siem Reap
Cambodia
City
Sep 22TueSep 27Sun
5 nights27°
Roundtrip fare
฿6,596
Steal
฿8,092-18%฿1,496 below avg
Thai AirAsiaRoundtrip
Last Minute
🇰🇭Siem Reap
Cambodia
City
Sep 16WedSep 30Wed
14 nights27°
Roundtrip fare
฿6,598
Steal
฿8,092-18%฿1,494 below avg
Thai AirAsiaRoundtrip
Last Minute
🇰🇭Siem Reap
Cambodia
City
Sep 17ThuSep 21Mon
4 nights27°
Roundtrip fare
฿6,601
Steal
฿8,092-18%฿1,491 below avg
Thai AirAsiaMonthly fare comparison
Lowest and average fares with sample sizes.
Monthly fare comparison
Lowest and average fares with sample sizes.
January 2027
651 fares
One way31
- Min
- ฿3,167
- Avg
- ฿3,510
Roundtrip620
- Min
- ฿6,626
- Avg
- ฿7,269
February 2027
588 fares
One way28
- Min
- ฿3,165
- Avg
- ฿3,259
Roundtrip560
- Min
- ฿6,638
- Avg
- ฿7,161
March 2027
546 fares
One way26
- Min
- ฿3,172
- Avg
- ฿3,393
Roundtrip520
- Min
- ฿6,646
- Avg
- ฿7,549
September 2026
407 fares
One way22
- Min
- ฿3,126
- Avg
- ฿3,384
Roundtrip385
- Min
- ฿6,589
- Avg
- ฿8,384
October 2026
609 fares
One way31
- Min
- ฿3,126
- Avg
- ฿3,847
Roundtrip578
- Min
- ฿6,607
- Avg
- ฿8,565
November 2026
589 fares
One way30
- Min
- ฿3,172
- Avg
- ฿4,071
Roundtrip559
- Min
- ฿6,671
- Avg
- ฿8,700
December 2026
628 fares
One way30
- Min
- ฿3,175
- Avg
- ฿4,056
Roundtrip598
- Min
- ฿6,686
- Avg
- ฿9,076
How to read the monthly fare data
- Compare one-way prices only with the one-way series and roundtrip prices only with the roundtrip series.
- Use the fare count to judge how much current evidence sits behind a monthly average.
- Treat the lowest fare as an observed option, not a guaranteed future price.
- Open a month to compare exact departure dates, airlines, stops and travel time.
FAQ: Cheapest Time to Fly to Siem Reap
Which month has the cheapest one-way flights from Bangkok to Siem Reap?
September currently has the lowest observed one-way fare, from ฿3,126. This compares one-way fares only.
Which month has the cheapest roundtrip flights from Bangkok to Siem Reap?
September currently has the lowest observed roundtrip fare, from ฿6,589. This compares complete roundtrips only.
How are the cheapest months for Siem Reap calculated?
We compare current observed fares from Bangkok by departure month. One-way and roundtrip prices stay in separate series, and each monthly table shows its available fare count.
Does the cheapest month guarantee the same price later?
No. It identifies the lowest fare in the current dataset, not a future price guarantee. Confirm the final itinerary total, airports, baggage and availability before booking.
Quick Answers
Which month is cheapest one way?
September currently starts at ฿3,126, the lowest observed one-way fare among the available months.
Which month is cheapest roundtrip?
September currently starts at ฿6,589, the lowest observed complete-roundtrip fare.
What does this comparison include?
Each month shows the lowest and average observed itinerary total plus the number of available fares in that series.
Can one-way and roundtrip prices be compared?
No. They represent different products, so this page keeps their prices, averages and sample sizes separate.