HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Siem Reap

$686+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAI
Apr 15 — Apr 221
Wed 4/15
Wed 4/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Siem Reap with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Philadelphia to Siem Reap

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 March 16, 2026.

This FlightHub deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:50 pm
PHL
-
SAI
2 stops34h 55m
Multiple Airlines
Sat 11/147:25 pm
SAI
-
PHL
2 stops49h 35m
Multiple Airlines
Deal found 3/16$1,310
This FlightHub deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:50 pm
PHL
-
SAI
2 stops34h 55m
Multiple Airlines
Sat 11/211:20 pm
SAI
-
PHL
2 stops31h 40m
Multiple Airlines
Deal found 3/12$1,435
This BusinessClass deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:32 pm
PHL
-
SAI
3 stops28h 43m
Qatar Airways
Sat 11/211:20 pm
SAI
-
PHL
2 stops31h 40m
Qatar Airways
Deal found 3/12$1,749
This Ovago deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:25 pm
PHL
-
SAI
3 stops27h 50m
Qatar Airways
Sat 11/149:55 am
SAI
-
PHL
2 stops35h 05m
Qatar Airways
Deal found 3/14$1,911
This Emirates deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:51 pm
PHL
-
SAI
3 stops44h 19m
Emirates
Sat 11/2111:50 pm
SAI
-
PHL
3 stops33h 42m
Emirates
Deal found 3/13$1,952
This Ovago deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:24 am
PHL
-
SAI
3 stops58h 51m
Etihad Airways
Sat 11/147:25 pm
SAI
-
PHL
3 stops62h 23m
Etihad Airways
Deal found 3/15$1,988
This Ovago deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:50 am
PHL
-
SAI
3 stops46h 55m
Austrian Airlines
Sat 11/149:55 am
SAI
-
PHL
3 stops48h 51m
Austrian Airlines
Deal found 3/14$13,820

Find flight deals from Philadelphia to Siem Reap

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Siem Reap (SAI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars
Provider with most accurate pricing for Philadelphia-Siem Reap–Angkor Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Siem Reap–Angkor Intl flights.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Siem Reap that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 16, 2026.
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 one-way

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Sat 4/11

9:56 pm-6:05 pm

3 stops57h 09m

$686

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Sat 3/28

6:47 pm-5:10 pm

3 stops59h 23m

$845

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Thu 4/2

8:25 pm-8:45 am

3 stops49h 20m

$3,059

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Fri 4/3

7:25 am-6:45 pm

3 stops48h 20m

$3,282
Quickest one-way

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Tue 3/31

10:10 pm-9:30 pm

2 stops36h 20m

$5,972

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Sorted by cheapest first

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars

*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.
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

Find useful and relevant information for your journey from Philadelphia to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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.

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.
John F Kennedy Intl to Siem Reap flights
Dulles Intl to Siem Reap flights
Newark to Siem Reap flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.