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Cheap Flights from Siem Reap (SAI) to Phnom Penh (PNH)

Compare Siem Reap–Angkor to Phnom Penh flight deals

Find the cheapest month or even day of the year to fly to Phnom Penh

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Flight deals from Siem Reap–Angkor to Phnom Penh

Looking for a cheap last-minute deal or the best return flight from Siem Reap–Angkor to Phnom Penh? Find the lowest prices on one-way and return tickets right here.
Phnom Penh.$144 per passenger.Departing Mon, 1 Sep, returning Thu, 4 Sep.Return flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Mon, 1 Sep, arriving in Phnom Penh.Inbound direct flight with Air Cambodia departs from Phnom Penh on Thu, 4 Sep, arriving in Siem Reap–Angkor .Price includes taxes and charges.From $144, select.
Phnom Penh.$234 per passenger.Departing Sun, 31 Aug, returning Sun, 7 Sep.Return flight with Air Cambodia.Outbound direct flight with Air Cambodia departs from Siem Reap–Angkor on Sun, 31 Aug, arriving in Phnom Penh.Inbound direct flight with Air Cambodia departs from Phnom Penh on Sun, 7 Sep, arriving in Siem Reap–Angkor .Price includes taxes and charges.From $234, select.
Phnom Penh.$512 per passenger.Departing Sat, 30 Aug, returning Sat, 30 Aug.Return flight with Air Cambodia.Outbound indirect flight with Air Cambodia, departs from Siem Reap–Angkor on Sat, 30 Aug, arriving in Phnom Penh.Inbound indirect flight with Air Cambodia, departs from Phnom Penh on Sat, 30 Aug, arriving in Siem Reap–Angkor .Price includes taxes and charges.From $512, select.
Phnom Penh.$919 per passenger.Departing Wed, 7 Jan, returning Sat, 10 Jan.Return flight with VietJet Air and China Southern.Outbound indirect flight with VietJet Air, departs from Siem Reap–Angkor on Wed, 7 Jan, arriving in Phnom Penh.Inbound indirect flight with China Southern, departs from Phnom Penh on Sat, 10 Jan, arriving in Siem Reap–Angkor .Price includes taxes and charges.From $919, select.
Phnom Penh.$1,211 per passenger.Departing Tue, 7 Oct, returning Thu, 15 Jan.Return flight with Bangkok Airways and Singapore Airlines.Outbound indirect flight with Bangkok Airways, departs from Siem Reap–Angkor on Tue, 7 Oct, arriving in Phnom Penh.Inbound indirect flight with Singapore Airlines, departs from Phnom Penh on Thu, 15 Jan, arriving in Siem Reap–Angkor .Price includes taxes and charges.From $1,211, select.
Phnom Penh.$1,569 per passenger.Departing Mon, 13 Oct, returning Fri, 17 Oct.Return flight with Bangkok Airways and Xiamen Airlines.Outbound indirect flight with Bangkok Airways, departs from Siem Reap–Angkor on Mon, 13 Oct, arriving in Phnom Penh.Inbound indirect flight with Xiamen Airlines, departs from Phnom Penh on Fri, 17 Oct, arriving in Siem Reap–Angkor .Price includes taxes and charges.From $1,569, select.

Find the cheapest month to fly from Siem Reap–Angkor to Phnom Penh

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Siem Reap–Angkor to Phnom Penh flights are currently cheapest in September.
Aug
from $512
Sep
from $144
Oct
from $1,569
Nov
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Dec
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Jan
from $919
Feb
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Mar
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Apr
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May
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Jun
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Jul
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Direct flights from Siem Reap–Angkor to Phnom Penh

Siem Reap–Angkor to Phnom Penh: Alternative routes

Compare routes from Siem Reap–Angkor to Phnom Penh below. You may find an airport to fly into that's cheaper, faster, or easier than Phnom Penh.

Siem Reap to Phnom Penh: Flight information

The things to know before you go.
Cheapest flight found$144
Cheapest month to flySeptember
Average flight time57 mins
Most popular airlineAir Cambodia
Average flights per week22

Finding cheap flights from Siem Reap–Angkor to Phnom Penh: Frequently asked questions

The best price we found for a return flight from Siem Reap–Angkor to Phnom Penh is $144. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
57 minutes is the average flight time from Siem Reap–Angkor to Phnom Penh.
Air Cambodia and Vietnam Airlines fly direct from Siem Reap–Angkor to Phnom Penh.
As of August 2025, there are 22 flights per week flying from Siem Reap–Angkor to Phnom Penh.
The cheapest month to fly from Siem Reap–Angkor to Phnom Penh is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Siem Reap–Angkor Airport to Phnom Penh Airport on Monday, 1 September 2025.
Yes – the average flight time is 57 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Phnom Penh but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Phnom Penh is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Air Cambodia offers the cheapest flight tickets to Phnom Penh.

Flying from Siem Reap-Ankor International Airport (SAI) to Phnom Penh International Airport (PNH): what you need to know

  • Around 50 minutes is how long you'll be travelling on a direct flight from Siem Reap-Ankor International Airport to Phnom Penh International Airport.

  • Siem Reap and Phnom Penh are both in the UTC+7 timezone. That means you won't have to change your watch when you arrive.

  • Each week, there are 273 Siem Reap-Ankor International Airport to Phnom Penh International Airport flights. If you prefer to get going as early as possible, select the 12:35 AirAsia Cambodia flight. If you'd rather make the most of your day before flying, the last departure is at 21:20 with Cambodia Angkor Air.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This ensures you have enough time to board your SAI to PNH flight.

  • Be prepared for longer queues during popular months like April. Arriving up to four hours in advance for an international flight and two hours for domestic departures is a smart move.

  • Cambodia Angkor Air is your gateway to exploring Phnom Penh (and perhaps some other exciting corners of Cambodia!). Check out the direct flights from Siem Reap-Ankor International Airport to Phnom Penh International Airport offered by this carrier.

  • The airline most travellers fly with on this route is Cambodia Angkor Air.

  • With an impressive 92.59% of services arriving on schedule, Cambodia Angkor Air is the most punctual carrier offering SAI to PNH flights.

  • Think about adding a stopover when booking your ticket from Siem Reap-Ankor International Airport to Phnom Penh International Airport. Simply deselect 'Direct flights only' to break up your journey, or perhaps explore a new destination along the way. Here's where you can stop between SAI and PNH:

    • Suvarnabhumi Airport

    • Tan Son Nhat International Airport

    • Changi International Airport

How to find the cheapest flights from Siem Reap-Ankor International Airport (SAI) to Phnom Penh International Airport (PNH)

  • $73 is currently the lowest price for a one-way Siem Reap-Ankor International Airport to Phnom Penh International Airport flight. A return flight starts from $144. These fares may change depending on availability and demand.

  • Book five months before flying. After looking at the numbers on our calendar, this is how far you'll want to book ahead to secure cheap tickets from SAI to PNH.

  • The cheapest month for flights from Siem Reap-Ankor International Airport to Phnom Penh International Airport is April. Use the 'Whole month' tool to find the lowest airfares if you have a flexible schedule.

  • Stay on top of deals for cheap flights from SAI to PNH by setting up a Price Alert. You'll get an email or notification through the app when a special offer becomes available.

  • Select your ideal arrival and departure times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to get the best deals on flights from Siem Reap-Ankor International Airport to Phnom Penh International Airport.

Handy information about Siem Reap-Ankor International Airport (SAI)

  • 80.01% of flights departing from Siem Reap-Ankor International Airport touch down at their destination on schedule. Given its strong on-time performance, you're unlikely to face delays when flying out of SAI.

  • Siem Reap-Ankor International Airport is about 48 kilometres from central Siem Reap. If you're driving, ride-sharing or catching a cab from the centre, it'll take 1 hour or so to arrive, depending on the traffic.

  • Staying the night at a hotel can take the stress out of getting to the airport on time. If you're looking for somewhere to stay before your flight from Siem Reap-Ankor International Airport to Phnom Penh International Airport, take a look at Chansor Community Homestay 18. It's a quick drive from SAI.

Arriving at Phnom Penh International Airport (PNH)

  • If you're getting in on a late Siem Reap-Ankor International Airport to Phnom Penh International Airport flight, nothing beats the convenience of being close to the terminal. Grab your luggage from the carousel and then be showered and sleeping soon after at one of these accommodation options near PNH:

  • Begin your adventure by picking up a Phnom Penh International Airport rental car. Grab your wheels from Europcar, Avis or Budget and explore beyond Phnom Penh's usual tourist stops.

  • Lock in the best deal by booking your ride from Phnom Penh International Airport about one week before your departure date.

Getting from Phnom Penh International Airport (PNH) to central Phnom Penh

  • From Phnom Penh International Airport, Phnom Penh is approximately 11 kilometres away. It takes around 30 minutes to drive to the centre.

When to fly to Phnom Penh International Airport (PNH)

  • August is the most popular month for flights from Siem Reap-Ankor International Airport to Phnom Penh International Airport. For a quieter experience, visit Phnom Penh in February.

  • The warmest month in Phnom Penh is March, with the temperature ranging between 23ºC (73ºF) and 38ºC (100ºF). Lock in your flights from Siem Reap-Ankor International Airport to Phnom Penh International Airport in this month if this is the type of weather you like.

  • Look for cheap tickets from SAI to PNH in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 20ºC (68ºF) and 33ºC (91ºF) on average.

Explore more of Cambodia

  • Sihanoukville is just one of the many places in Cambodia waiting to be explored once you've taken in the sights of Phnom Penh. Around 193 kilometres away to the south-west, check out popular attractions including Ochheuteal Beach, Wat Leu Temple and Wat Krom Temple.

  • If you're looking to explore another great destination in Cambodia, head for Battambang, roughly 257 kilometres north-west of Phnom Penh. The Garden of SamDech Sar Kheng, Spean Thmor Chas and សួននាគសន្តិភាព-Dragon Peace Garden are the start of reasons to visit.

Plan the rest of your trip from Siem Reap to Phnom Penh

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.