Cheap flights from Bangkok to Siem Reap from $87

If you don’t want to visit Siem Reap in June, then you should wait until May to fly from Bangkok, when ticket prices are also cheap, with an average price of $178.

The cheapest day to depart from Bangkok to Siem Reap is on a Wednesday. Travelers who choose to depart for Siem Reap on a Wednesday will often find tickets for as low as $211. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $284. These prices are subject to change though, so be sure to set up a Price Alert for flights to Siem Reap.

At noon is the cheapest time of day to fly from Bangkok to Siem Reap when you can find flight prices for as low as $178. Flying to Siem Reap at noon is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Siem Reap, so prices are often more expensive at around $222 per ticket.

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 $196 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 $187 on momondo.

There are 3 cabin classes available to choose from on Bangkok 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.

Thai AirAsia and Bangkok Airways are the most popular carriers operating from Bangkok 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 according to our data. Thai AirAsia is the first choice among our users, with 78% of people opting to fly with this airline when traveling to Siem Reap. Keep in mind that there are 4 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 20% 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 in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

34 flights are operational daily from Bangkok to Siem Reap as of March 2026. The most popular departure time for this route is 5:00PM, with 55% of flights per day taking off at noon.

As of March 2026, 242 flights take off from Bangkok and land in Siem Reap each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.