Cheap flights from Bangkok to Siem Reap from C$ 140

The cheapest month to fly to Siem Reap from Bangkok is in June. Flight prices, which tend to average around C$ 222, are often lower during this time because this is during the off-season. If you are unable to visit Siem Reap during the month of June, then departing from Bangkok during the month May is also very affordable. Most momondo users find prices during this month for around C$ 244.

According to our data, the cheapest time of day to fly to Siem Reap is in the afternoon. momondo users have found flights departing from Bangkok to Siem Reap in the afternoon for as low as C$ 267. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of C$ 284.

Fly from Bangkok Don Mueang Intl to Siem Reap–Angkor Intl for the best Bangkok - Siem Reap–Angkor Intl flight prices

You are more likely to see cheaper flights to Siem Reap from Bangkok when booking weeks ahead of your departure date. In general, you can expect to find flights to Siem Reap for around C$ 269 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Siem Reap from Bangkok for as low as C$ 256 on momondo.

Historically, on average around 21% of flights between Bangkok and Siem Reap have experienced a delay on any given week. The average delay length over the past 12 months has been 84 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Thai Airways has had the least delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

The number of flights available between Bangkok and Siem Reap is 38 per day as of March 2026. The most frequent departure time is 5:00p.m., with 55% of daily flights leaving at noon.

As of March 2026, 270 flights take off from Bangkok and land in Siem Reap each week. The most common flight departure day for this route is Sat, with 15% of weekly flights taking off on this day.