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Cheap flights from Philadelphia to Siem Reap from $1,277

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Siem Reap departing on 10/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Philadelphia to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:30 pm - 9:30 pm
PHL
-
SAI
37h 00m
2 stops
Multiple Airlines Logo
11:50 pm - 3:40 pm
SAI
-
PHL
50h 50m
2 stops
$1,277Multiple Airlines
Sun, Oct 11 - Sat, Oct 31
Multiple Airlines Logo
8:30 pm - 5:40 pm
PHL
-
SAI
33h 10m
2 stops
Multiple Airlines Logo
4:00 pm - 2:40 pm
SAI
-
PHL
34h 40m
2 stops
$1,310Multiple Airlines
Wed, Nov 4 - Wed, Nov 11
Lufthansa Logo
5:40 pm - 9:40 am
PHL
-
SAI
53h 00m
2 stops
Lufthansa Logo
4:45 pm - 5:05 pm
SAI
-
PHL
35h 20m
2 stops
$1,332Lufthansa
Sun, Oct 11 - Wed, Oct 28
Multiple Airlines Logo
9:30 pm - 5:10 pm
PHL
-
SAI
32h 40m
2 stops
Multiple Airlines Logo
7:25 pm - 3:40 pm
SAI
-
PHL
31h 15m
2 stops
$1,333Multiple Airlines
Mon, Oct 12 - Fri, Oct 30
Multiple Airlines Logo
9:30 pm - 5:10 pm
PHL
-
SAI
32h 40m
2 stops
Multiple Airlines Logo
5:05 pm - 3:40 pm
SAI
-
PHL
57h 35m
3 stops
$1,350Multiple Airlines
Sun, Oct 11 - Sat, Oct 31
Multiple Airlines Logo
8:30 pm - 7:05 pm
PHL
-
SAI
34h 35m
2 stops
Multiple Airlines Logo
10:00 am - 2:40 pm
SAI
-
PHL
40h 40m
2 stops
$1,352Multiple Airlines
Wed, Nov 4 - Sat, Nov 14
Multiple Airlines Logo
8:30 pm - 9:15 am
PHL
-
SAI
24h 45m
2 stops
Multiple Airlines Logo
9:30 pm - 2:40 pm
SAI
-
PHL
53h 10m
2 stops
$1,362Multiple Airlines
Thu, Nov 12 - Sat, Nov 21
Multiple Airlines Logo
9:30 pm - 4:25 pm
PHL
-
SAI
31h 55m
3 stops
Multiple Airlines Logo
4:00 pm - 3:40 pm
SAI
-
PHL
34h 40m
2 stops
$1,363Multiple Airlines
Mon, Oct 12 - Sat, Oct 31
Multiple Airlines Logo
9:30 pm - 5:10 pm
PHL
-
SAI
32h 40m
2 stops
Multiple Airlines Logo
1:20 pm - 3:40 pm
SAI
-
PHL
37h 20m
2 stops
$1,373Multiple Airlines
Sat, Oct 10 - Fri, Oct 30
Lufthansa Logo
5:40 pm - 9:40 am
PHL
-
SAI
53h 00m
2 stops
Lufthansa Logo
4:45 pm - 5:05 pm
SAI
-
PHL
35h 20m
2 stops
$1,407Lufthansa
Thu, Oct 8 - Wed, Oct 28

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Etihad Airways flights from Philadelphia to Region of Siem Reap

Our best Etihad Airways deals on Philadelphia to Region of Siem Reap flight tickets
Etihad Airways
Nov 4
PHL10:30 amPhiladelphia
38h 10m
3 stops
SAI12:40 pmSiem Reap–Angkor Intl
Nov 11
SAI1:20 pmSiem Reap–Angkor Intl
40h 12m
3 stops
PHL5:32 pmPhiladelphia
$1,621
Etihad Airways
Nov 4
PHL6:00 amPhiladelphia
39h 15m
3 stops
SAI9:15 amSiem Reap–Angkor Intl
Nov 14
SAI1:20 pmSiem Reap–Angkor Intl
40h 12m
3 stops
PHL5:32 pmPhiladelphia
$1,661
Etihad Airways
Nov 4
PHL10:30 amPhiladelphia
38h 10m
3 stops
SAI12:40 pmSiem Reap–Angkor Intl
Nov 14
SAI1:20 pmSiem Reap–Angkor Intl
40h 12m
3 stops
PHL5:32 pmPhiladelphia
$1,762

Emirates flights from Philadelphia to Region of Siem Reap

Our best Emirates deals on Philadelphia to Region of Siem Reap flight tickets
Emirates
Nov 4
PHL6:51 pmPhiladelphia
62h 19m
3 stops
SAI9:10 pmSiem Reap–Angkor Intl
Nov 14
SAI11:50 pmSiem Reap–Angkor Intl
33h 36m
3 stops
PHL9:26 pmPhiladelphia
$2,050
Emirates
Nov 12
PHL1:22 pmPhiladelphia
43h 48m
3 stops
SAI9:10 pmSiem Reap–Angkor Intl
Nov 21
SAI11:50 pmSiem Reap–Angkor Intl
33h 36m
3 stops
PHL9:26 pmPhiladelphia
$2,060
Emirates
Nov 12
PHL12:40 pmPhiladelphia
44h 30m
3 stops
SAI9:10 pmSiem Reap–Angkor Intl
Nov 21
SAI11:50 pmSiem Reap–Angkor Intl
33h 36m
3 stops
PHL9:26 pmPhiladelphia
$2,072

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Region of 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, momondo users made 832,500 searches. Data last updated July 19, 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 round-trip

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Sun 10/11

9:30 pm-9:30 pm

2 stops37h 00m

Siem Reap–Angkor Intl

Sat 10/31

11:50 pm-3:40 pm

2 stops50h 50m

$1,277

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Wed 11/4

8:30 pm-5:40 pm

2 stops33h 10m

Siem Reap–Angkor Intl

Wed 11/11

4:00 pm-2:40 pm

2 stops34h 40m

$1,310

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Sun 10/11

5:40 pm-9:40 am

2 stops53h 00m

Siem Reap–Angkor Intl

Wed 10/28

4:45 pm-5:05 pm

2 stops35h 20m

$1,332
Quickest round-trip

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Mon 10/12

9:30 pm-5:10 pm

2 stops32h 40m

Siem Reap–Angkor Intl

Fri 10/30

7:25 pm-3:40 pm

2 stops31h 15m

$1,333

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Sun 10/11

9:30 pm-5:10 pm

2 stops32h 40m

Siem Reap–Angkor Intl

Sat 10/31

5:05 pm-3:40 pm

3 stops57h 35m

$1,350

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Wed 11/4

8:30 pm-7:05 pm

2 stops34h 35m

Siem Reap–Angkor Intl

Sat 11/14

10:00 am-2:40 pm

2 stops40h 40m

$1,352

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Thu 11/12

8:30 pm-9:15 am

2 stops24h 45m

Siem Reap–Angkor Intl

Sat 11/21

9:30 pm-2:40 pm

2 stops53h 10m

$1,362

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Mon 10/12

9:30 pm-4:25 pm

3 stops31h 55m

Siem Reap–Angkor Intl

Sat 10/31

4:00 pm-3:40 pm

2 stops34h 40m

$1,363

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Sat 10/10

9:30 pm-5:10 pm

2 stops32h 40m

Siem Reap–Angkor Intl

Fri 10/30

1:20 pm-3:40 pm

2 stops37h 20m

$1,373

PhiladelphiaSiem Reap

PHL - SAI

PHLSAI

Philadelphia

Thu 10/8

5:40 pm-9:40 am

2 stops53h 00m

Siem Reap–Angkor Intl

Wed 10/28

4:45 pm-5:05 pm

2 stops35h 20m

$1,407

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Philadelphia to Region of Siem Reap flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Region of Siem Reap

Fastest flight time

34h 35m

Direct flights

None
The fastest flight from Philadelphia to Region of Siem Reap takes 34h 35m
There are no direct flights from Philadelphia to Region of Siem Reap. There are no popular flight routes from Philadelphia to Region of Siem Reap.
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Frequently asked questions about flying from Philadelphia to Siem Reap

  • When did momondo last update prices for flights from Philadelphia Airport to Siem Reap?

    Prices for flights from Philadelphia Airport to Siem Reap refresh daily.

  • How old do you have to be to fly from Philadelphia Airport to Siem Reap?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Siem Reap.

  • What documentation or ID do you need to fly to Siem Reap?

    The travel and health documents you'll need for your trip to Siem Reap may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Siem Reap. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Philadelphia to Siem Reap

  • How do I get Price Alerts for flights from Philadelphia to Region of Siem Reap?

    Price Alerts will notify you by email when the price for flights to Region of Siem Reap from Philadelphia decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Philadelphia to Region of Siem Reap with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Siem Reap?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Philadelphia to Siem Reap for you.

Can I find flights from Philadelphia to Siem Reap with flexible booking policies on momondo?

Yes. All flights to Siem Reap from Philadelphia on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Philadelphia to Siem Reap?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Siem Reap from Philadelphia.

I’m not ready to book a flight from Philadelphia to Siem Reap right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Siem Reap, momondo offers a useful price alert feature which will track prices for flights to Siem Reap from Philadelphia and alert you when they change.

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