Cheap flights from Siem Reap to Southeast Asia from £76

The month of May is, on average, the cheapest month to fly to Southeast Asia from Siem Reap, with most prices found around £40. If you are unable to visit Southeast Asia during the month of May, then departing from Siem Reap during the month June is also very affordable. Most momondo users find prices during this month for around £44.

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 £135. Flying to Southeast Asia in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around £626. 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 £157 when searching weeks before you fly. 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 £119 on momondo.

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

As of May 2026, there are 39 flights per day flying from Siem Reap to Southeast Asia. The most common time of day flights depart is 19:00, with 37% of flights taking off at midday.

275 flights are operational weekly from Siem Reap to Southeast Asia as of May 2026. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.