Cheap flights from Siem Reap to Bangkok from £78

If you don’t want to visit Bangkok Suvarnabhumi Airport in May, then you should wait until March to fly from Siem Reap, when ticket prices are also cheap, with an average price of £124.

According to our data, Monday is the cheapest day to fly to Bangkok Suvarnabhumi Airport from Siem Reap. The lowest ticket price found for a Monday departure recently was £378. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Siem Reap to Bangkok Suvarnabhumi Airport for around £944.

According to our data, the cheapest time of day to fly to Bangkok Suvarnabhumi Airport is in the afternoon. momondo users have found flights departing from Siem Reap to Bangkok Suvarnabhumi Airport in the afternoon for as low as £134. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £625 on average. Flights to Bangkok Suvarnabhumi Airport from Siem Reap in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Bangkok Suvarnabhumi Airport from Siem Reap when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok Suvarnabhumi Airport for around £147 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok Suvarnabhumi Airport from Siem Reap for as low as £115 on momondo.

There are 2 cabin classes available to choose from on Siem Reap–Angkor Intl to Bangkok Suvarnabhumi flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 8% of flights between Siem Reap and Bangkok have experienced a delay on any given week. The average delay length over the past 12 months has been 89 minutes.

Generally, flights departing at night 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. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, Emirates have had the fewest delays on this route over the last 12 months, with about 1% of their flights experiencing any sort of delay.

The number of flights available between Siem Reap and Bangkok Suvarnabhumi Airport is 36 per day as of February 2026. The most frequent departure time is 19:00, with 38% of daily flights leaving at midday.

As of February 2026, there are 258 flights per week flying from Siem Reap to Bangkok Suvarnabhumi Airport. The most common day of the week flights depart is Tue, with 15% of flights taking off on this day.