Cheap flights from Siem Reap to Southeast Asia from £82

The month of May is, on average, the cheapest month to fly to Southeast Asia from Siem Reap, with most prices found around £121. 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 £137.

Our data shows that Thursday is the least expensive day to fly to Southeast Asia. Tickets to fly out on this day can be as low as £816. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Southeast Asia on Tuesday is £975.

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 £138. 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 £646. 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 Phuket City 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 £154 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.

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

As of March 2026, there are 47 flights per day flying from Siem Reap to Southeast Asia. The most common time of day flights depart is 10:00, with 34% of flights taking off at midday.

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