Cheap flights from Bangkok Suvarnabhumi Airport to Siem Reap from $150

The cheapest month to fly to Siem Reap from Bangkok Suvarnabhumi Airport is in June. Flight prices, which tend to average around $232, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of June, then book flights to Siem Reap from Bangkok Suvarnabhumi Airport during May instead. Flights to Siem Reap in May, while not as cheap as those in June, still average around $255.

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 $291. 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 $376.

Flying to Siem Reap from Bangkok Suvarnabhumi Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $262 when looking at flights departing in the morning. Try not to purchase tickets in the afternoon because they tend to be around $376. 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 $281 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 $268 on momondo.

There are 2 cabin classes available to choose from on Bangkok Suvarnabhumi to Siem Reap–Angkor Intl 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 26% on your flight if you consider stops on a Bangkok Suvarnabhumi Airport to Siem Reap flight.

As of March 2026, prices for Bangkok Suvarnabhumi Airport to Siem Reap flights are approximately 23% more expensive when compared to flights at the same time last year.

Historically, on average around 10% 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 86 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. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Thai Airways have had the fewest delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

As of March 2026, 28 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 56% of daily flights taking off at midday.

As of March 2026, 201 flights take off from Bangkok Suvarnabhumi Airport and land in Siem Reap each week. The most common flight departure day for this route is Sat, with 20% of weekly flights taking off on this day.