How long is the flight from Philadelphia to Siem Reap?

For as low as $1,465, Qatar Airways can have you in Siem Reap from Philadelphia in 24h 30m. Airlines will cover a distance of 8751 mi.

In terms of precipitation, rainfall in Siem Reap ranges from 0.0 - 10.2 inches per month. September is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Siem Reap when rainfall is around 0.0 in.

If weather is an important factor for your trip to Siem Reap, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 75.2 F).

What is the cheapest time of day to fly from PHL to SAI?

When flying from Philadelphia to Siem Reap, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Philadelphia-Siem Reap flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Siem Reap flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Siem Reap flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Philadelphia-Siem Reap flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Siem Reap flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Philadelphia to Siem Reap that include hotel bookings?

Yes. In addition to deals on Philadelphia to Siem Reap flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Philadelphia to Siem Reap?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Siem Reap.

Can I find deals for business class flights from Philadelphia to Siem Reap?

Yes. Cheapflights offers flight deals from Philadelphia to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$559+ Cheap Flights from Philadelphia to Siem Reap, Cambodia

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Cheap flight deals from Philadelphia to Siem Reap

Cheapest

Best

One-way

Cheapest flights from Philadelphia to Siem Reap
Explore the most affordable flight options available from Philadelphia to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 25, 2026.

Wed 11/48:45 pm -

2 stops32h 55m

Sat 11/149:30 pm -

2 stops53h 20m

Deal found 8/21

$1,244

Thu 11/128:45 pm -

2 stops58h 00m

Sat 11/217:25 pm -

2 stops31h 25m

Deal found 8/20

$1,427

Thu 11/128:45 pm -

2 stops24h 30m

Sat 11/217:25 pm -

2 stops31h 25m

Deal found 8/21

$1,465

Wed 11/410:27 am -

3 stops38h 13m

Sat 11/149:55 am -

3 stops43h 37m

Deal found 8/24

$1,485

One-way flights from Philadelphia to Siem Reap
Search for one-way flight options from Philadelphia to Siem Reap. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.

Wed 9/239:30 pm -

2 stops33h 35m

Deal found 8/23

$559

Tue 9/299:30 pm -

2 stops33h 35m

Deal found 8/20

$628

Tue 9/1512:40 pm -

3 stops57h 20m

Deal found 8/20

$653

Tue 10/2712:36 pm -

3 stops57h 39m

Deal found 8/20

$656

Tue 9/159:30 pm -

2 stops24h 30m

Deal found 8/21

$658

Mon 10/59:30 pm -

2 stops34h 25m

Deal found 8/20

$660

Tue 9/2212:40 pm -

3 stops43h 55m

Deal found 8/23

$662

Thu 9/2412:40 pm -

3 stops57h 20m

Deal found 8/23

$666

Mon 9/2812:40 pm -

3 stops43h 15m

Deal found 8/20

$669

Tue 9/2210:42 am -

3 stops35h 18m

Deal found 8/21

$676

Mon 9/1412:40 pm -

3 stops43h 15m

Deal found 8/20

$694

Find flight deals from Philadelphia to Siem Reap

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$1,244 (oojo)
One-way from	$559 (Trip.com)

Provider with most accurate pricing for Philadelphia-Siem Reap–Angkor Intl flight deals.

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Provider most trusted by Cheapflights users for Philadelphia-Siem Reap–Angkor Intl flights.

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From Philadelphia to Siem Reap–Angkor Intl

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One-way flight from Philadelphia to Siem Reap–Angkor Intl

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Philadelphia to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSiem Reap

PHL Philadelphia - SAI Siem Reap–Angkor Intl

PHLSAI

Philadelphia

Wed 11/4

8:45 pm-5:40 pm

2 stops32h 55m

Siem Reap–Angkor Intl

Sat 11/14

9:30 pm-2:50 pm

2 stops53h 20m

$1,244

PhiladelphiaSiem Reap

PHL Philadelphia - SAI Siem Reap–Angkor Intl

PHLSAI

Philadelphia

Thu 11/12

8:45 pm-6:45 pm

2 stops58h 00m

Siem Reap–Angkor Intl

Sat 11/21

7:25 pm-2:50 pm

2 stops31h 25m

$1,427

Quickest round-trip

PhiladelphiaSiem Reap

PHL Philadelphia - SAI Siem Reap–Angkor Intl

PHLSAI

Philadelphia

Thu 11/12

8:45 pm-9:15 am

2 stops24h 30m

Siem Reap–Angkor Intl

Sat 11/21

7:25 pm-2:50 pm

2 stops31h 25m

$1,465

Cheapest one-way

Quickest one-way

PhiladelphiaSiem Reap

PHL Philadelphia - SAI Siem Reap–Angkor Intl

PHLSAI

Philadelphia

Tue 9/15

9:30 pm-12:15 pm

2 stops27h 45m

$658

PhiladelphiaSiem Reap

PHL Philadelphia - SAI Siem Reap–Angkor Intl

PHLSAI

Philadelphia

Tue 9/22

9:30 pm-6:55 pm

2 stops34h 25m

$658

PhiladelphiaSiem Reap

PHL Philadelphia - SAI Siem Reap–Angkor Intl

PHLSAI

Philadelphia

Thu 9/24

9:30 pm-12:15 pm

2 stops27h 45m

$658

PhiladelphiaSiem Reap

PHL Philadelphia - SAI Siem Reap–Angkor Intl

PHLSAI

Philadelphia

Wed 9/23

9:30 pm-6:55 pm

2 stops34h 25m

$658

PhiladelphiaSiem Reap

PHL Philadelphia - SAI Siem Reap–Angkor Intl

PHLSAI

Philadelphia

Wed 9/30

9:30 pm-6:55 pm

2 stops34h 25m

$658

PhiladelphiaSiem Reap

PHL Philadelphia - SAI Siem Reap–Angkor Intl

PHLSAI

Philadelphia

Wed 10/7

9:30 pm-6:55 pm

2 stops34h 25m

$660

PhiladelphiaSiem Reap

PHL Philadelphia - SAI Siem Reap–Angkor Intl

PHLSAI

Philadelphia

Wed 10/28

9:45 pm-12:40 pm

2 stops27h 55m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/23

Showing 1-10 of 13 resultsSorted by cheapest first

Compare providers for flights from Philadelphia to Siem Reap

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Siem Reap in August.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Ovago	Price Accuracy3 stars	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Philadelphia-Siem Reap flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Siem Reap flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Siem Reap flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Philadelphia-Siem Reap flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Siem Reap flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Philadelphia with our price prediction graph.

PHL-SAI

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

How long is the flight from Philadelphia to Siem Reap?
For as low as $1,465, Qatar Airways can have you in Siem Reap from Philadelphia in 24h 30m. Airlines will cover a distance of 8751 mi.
Can I find deals for flights from Philadelphia to Siem Reap that include hotel bookings?
Yes. In addition to deals on Philadelphia to Siem Reap flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Philadelphia to Siem Reap?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Siem Reap.
Can I find deals for business class flights from Philadelphia to Siem Reap?
Yes. Cheapflights offers flight deals from Philadelphia to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$559+ Cheap flights from Philadelphia (PHL) to Siem Reap, Cambodia (SAI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Philadelphia to Siem Reap with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Philadelphia to Siem Reap

Cheapest flights from Philadelphia to Siem ReapExplore the most affordable flight options available from Philadelphia to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 25, 2026.

Explore the most affordable flight options available from Philadelphia to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 25, 2026.

Best flights from Philadelphia to Siem ReapDiscover carefully curated flight deals from Philadelphia to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.

Discover carefully curated flight deals from Philadelphia to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.

One-way flights from Philadelphia to Siem ReapSearch for one-way flight options from Philadelphia to Siem Reap. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.

Search for one-way flight options from Philadelphia to Siem Reap. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.

Find flight deals from Philadelphia to Siem Reap

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Philadelphia to Siem Reap that are best for you.

Compare providers for flights from Philadelphia to Siem Reap

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Siem Reap in August.

Best time to book a flight from Philadelphia to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Philadelphia with our price prediction graph.

Related info for your journey

How long is the flight from Philadelphia to Siem Reap?

Can I find deals for flights from Philadelphia to Siem Reap that include hotel bookings?

How can I find direct flights from Philadelphia to Siem Reap?

Can I find deals for business class flights from Philadelphia to Siem Reap?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Philadelphia to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Siem Reap by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Philadelphia to Siem Reap by cabin class

Find flights from Philadelphia to Siem Reap, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Philadelphia and Siem Reap flights

Browse other Philadelphia and Siem Reap flight options. Last updated on August 25, 2026.

Other flights from Philadelphia

Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on August 25, 2026.

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Cheapest flights from Philadelphia to Siem Reap
Explore the most affordable flight options available from Philadelphia to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 25, 2026.

Best flights from Philadelphia to Siem Reap
Discover carefully curated flight deals from Philadelphia to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.

One-way flights from Philadelphia to Siem Reap
Search for one-way flight options from Philadelphia to Siem Reap. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.