Cheap flights from Siem Reap to Southeast Asia from $82

The month of August is, on average, the cheapest month to fly to Southeast Asia from Siem Reap, with most prices found around $166. If you don’t want to visit Southeast Asia in August, then you should wait until December to fly from Siem Reap, when ticket prices are also cheap, with an average price of $205.

The cheapest day to depart from Siem Reap to Southeast Asia is on a Thursday when prices can be found for as low as $233. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,529. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Asia.

In the afternoon is the cheapest time of day to fly from Siem Reap to Southeast Asia when you can find flight prices for as low as $227. Flying to Southeast Asia in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $659. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Siem Reap–Angkor Intl to Bangkok Don Mueang Intl for the best Siem Reap–Angkor Intl - Southeast Asia flight prices

You are more likely to see cheaper flights to Southeast Asia from Siem Reap when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $227 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from Siem Reap for as low as $174 on momondo.

There are 3 cabin classes available to choose from on Siem Reap to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Thai AirAsia, VietJet Air, and Vietnam Airlines are the most popular carriers operating from Siem Reap–Angkor Intl to Southeast Asia

Thai AirAsia, Vietnam Airlines and Cambodia Angkor Air are the top three most popular airlines that fly to Southeast Asia from Siem Reap according to our data. Thai AirAsia is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Southeast Asia. Keep in mind that there are 6 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

As of August 2026, there are 49 flights per day flying from Siem Reap to Southeast Asia. The most common time of day flights depart is 9:00AM, with 36% of flights taking off at noon.

As of August 2026, there are 348 flights per week flying from Siem Reap to Southeast Asia. The most common day of the week flights depart is Wed, with 17% of flights taking off on this day.