Cheap flights from Southeast Asia to Siem Reap from $138

The cheapest month to fly to Siem Reap from Southeast Asia is in July. Flight prices, which tend to average around $219, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of July, then book flights to Siem Reap from Southeast Asia during September instead. Flights to Siem Reap in September, while not as cheap as those in July, still average around $289.

Fly from Phuket City to Siem Reap–Angkor Intl for the best Southeast Asia - Siem Reap–Angkor Intl flight prices

There is only 1 cabin class available to choose from on Southeast Asia to Siem Reap flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Southeast Asia to Siem Reap.

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

Thai AirAsia, Cambodia Angkor Air and Bangkok Airways are the top three most popular airlines that fly to Siem Reap from Southeast Asia according to our data. Thai AirAsia is the first choice among our users, with 31% of people opting to fly with this airline when travelling 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.

As of August 2026, 35 flights take off from Southeast Asia 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 August 2026, there are 247 flights per week flying from Southeast Asia to Siem Reap. The most common day of the week flights depart is Mon, with 21% of flights taking off on this day.