Cheap flights from Bangkok Suvarnabhumi Airport to Siem Reap from $159

The cheapest month to fly to Siem Reap from Bangkok Suvarnabhumi Airport is in October. Flight prices, which tend to average around $294, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Siem Reap from Bangkok Suvarnabhumi Airport during March instead. Flights to Siem Reap in March, while not as cheap as those in October, still average around $297.

The cheapest day to depart from Bangkok Suvarnabhumi Airport to Siem Reap is on a Thursday. Travellers who choose to depart for Siem Reap on a Thursday will often find tickets for as low as $271. On the other hand, Wednesday is the most expensive day to depart from Bangkok Suvarnabhumi Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around $364.

Flying to Siem Reap from Bangkok Suvarnabhumi Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $271 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $364. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Siem Reap from Bangkok Suvarnabhumi Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Siem Reap for around $310 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Siem Reap from Bangkok Suvarnabhumi Airport for as low as $281 on momondo.

There is only 1 cabin class available to choose from on Bangkok Suvarnabhumi Airport to Siem Reap flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 14% on your flight if you consider stops on a Bangkok Suvarnabhumi Airport to Siem Reap flight.

As of September 2026, prices for Bangkok Suvarnabhumi Airport to Siem Reap flights are approximately 59% more expensive when compared to flights at the same time last year.

Historically, on average around 9% 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 89 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon 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. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Bangkok Airways have had the fewest delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

As of September 2026, 40 flights take off from Bangkok Suvarnabhumi Airport and land in Siem Reap each day. The most common flight departure time for this route is 17:00, with 49% of daily flights taking off at midday.

As of September 2026, 281 flights take off from Bangkok Suvarnabhumi Airport and land in Siem Reap each week. The most common flight departure day for this route is Thu, with 19% of weekly flights taking off on this day.