Cheap flights from Phnom Penh to Siem Reap from $59

If you don’t want to visit Siem Reap in July, then you should wait until August to fly from Phnom Penh, when ticket prices are also cheap, with an average price of $107.

The cheapest day to depart from Phnom Penh 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 $153. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $180. These prices are subject to change though, so be sure to set up a Price Alert for flights to Siem Reap.

In the evening is the cheapest time of day to fly from Phnom Penh to Siem Reap when you can find flight prices for as low as $148. Flying to Siem Reap in the evening is an ideal time because this is during off-peak travel hours. At noon is when there is more demand to fly to Siem Reap, so prices are often more expensive at around $196 per ticket.

Fly from Phnom Penh Techo Intl to Siem Reap–Angkor Intl for the best Phnom Penh Techo Intl - Siem Reap–Angkor Intl flight prices

You are more likely to see cheaper flights to Siem Reap from Phnom Penh when booking weeks ahead of your departure date. In general, you can expect to find flights to Siem Reap for around $163 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Siem Reap from Phnom Penh for as low as $128 on momondo.

There are 2 cabin classes available to choose from on Phnom Penh to Siem Reap flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

The number of flights available between Phnom Penh and Siem Reap is 3 per day as of October 2026. The most frequent departure time is 4:00PM, with 37% of daily flights leaving at noon.

As of October 2026, there are 27 flights per week flying from Phnom Penh to Siem Reap. The most common day of the week flights depart is Fri, with 26% of flights taking off on this day.