Cheap flights from Bangkok Suvarnabhumi Airport to Siem Reap from £84

The month of June is, on average, the cheapest month to fly to Siem Reap from Bangkok Suvarnabhumi Airport, with most prices found around £123. If you don’t want to visit Siem Reap in June, then you should wait until September to fly from Bangkok Suvarnabhumi Airport, when ticket prices are also cheap, with an average price of £140.

On average, the least expensive day to fly to Siem Reap from Bangkok Suvarnabhumi Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as £142. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around £230. These prices are subject to change though, so be sure to set up a Price Alert for flights to Siem Reap.

The cheapest time of day to fly to Siem Reap is at midday when flights can be purchased for as low as £140. In contrast, the most expensive time of day to depart to Siem Reap is in the afternoon when prices are around £162.

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 £151 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 £140 on momondo.

There are 3 cabin classes 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 10% on your flight if you consider stops on a Bangkok Suvarnabhumi Airport to Siem Reap flight.

As of April 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.

Bangkok Airways is the most popular carrier operating from Bangkok Suvarnabhumi to Siem Reap–Angkor Intl

Thai AirAsia, Bangkok Airways and Thai Airways are the top three most popular airlines that fly to Siem Reap from Bangkok Suvarnabhumi Airport according to our data. Thai AirAsia is the first choice among our users, with 76% of people opting to fly with this airline when travelling to Siem Reap. Keep in mind that there are 3 different airlines that fly to Siem Reap on a routine basis, so you have a few additional options to choose from.

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, Bangkok Airways have had the fewest delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

As of April 2026, there are 32 flights per day flying from Bangkok Suvarnabhumi Airport to Siem Reap. The most common time of day flights depart is 17:00, with 54% of flights taking off at midday.

The number of flights available between Bangkok Suvarnabhumi Airport and Siem Reap is 229 per week as of April 2026. The most frequent departure day is Thu, with 15% of weekly flights leaving on this day.