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Siem Reap

$490+ Cheap flights from District of Columbia 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SAI
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap flight deals from District of Columbia to Siem Reap

Keep the following information in mind while searching for District of Columbia to Siem Reap flight deals. Data was last updated January 15, 2026.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$1,564
(Booking.com)

One-way from

$490
(Kiwi.com)
Provider with most accurate pricing for Washington, D.C. (WAS)-Siem Reap–Angkor Intl flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Siem Reap–Angkor Intl flights.
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From District of Columbia to Siem Reap–Angkor Intl
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One-way flight from District of Columbia to Siem Reap–Angkor Intl
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Find flight deals from District of Columbia to Siem Reap

Cheapest flights from District of Columbia to Siem Reap
Explore the most affordable flight options available from District of Columbia to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This Turkish Airlines deal was found by Cheapflights users on 1/14. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/249:10 pm
IAD
-
SAI
2 stops33h 35m
Multiple Airlines
Fri 12/257:25 pm
SAI
-
IAD
2 stops35h 50m
Multiple Airlines
Deal found 1/14$1,253
This United Airlines deal was found by Cheapflights users on 1/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1912:20 pm
IAD
-
SAI
2 stops33h 30m
United Airlines
Fri 1/2310:45 am
SAI
-
IAD
2 stops32h 50m
United Airlines
Deal found 1/14$1,255
This United Airlines deal was found by Cheapflights users on 1/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1912:20 pm
IAD
-
SAI
2 stops33h 30m
United Airlines
Sat 1/244:45 pm
SAI
-
IAD
2 stops50h 02m
United Airlines
Deal found 1/14$1,266
This FlightHub deal was found by Cheapflights users on 1/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:05 pm
IAD
-
SAI
3 stops32h 05m
Multiple Airlines
Sun 12/67:25 pm
SAI
-
IAD
2 stops32h 30m
Multiple Airlines
Deal found 1/13$1,313
This United Airlines deal was found by Cheapflights users on 1/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/202:10 pm
IAD
-
SAI
2 stops37h 45m
United Airlines
Fri 1/2310:45 am
SAI
-
IAD
2 stops32h 02m
United Airlines
Deal found 1/14$1,365
This United Airlines deal was found by Cheapflights users on 1/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/206:15 pm
IAD
-
SAI
2 stops33h 40m
United Airlines
Sat 1/244:45 pm
SAI
-
IAD
2 stops50h 02m
United Airlines
Deal found 1/14$1,376
This KAYAK deal was found by Cheapflights users on 1/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:05 pm
IAD
-
SAI
2 stops25h 10m
Qatar Airways
Wed 12/307:25 pm
SAI
-
IAD
2 stops48h 55m
Qatar Airways
Deal found 1/15$1,409
This Gotogate deal was found by Cheapflights users on 1/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:20 pm
IAD
-
SAI
2 stops32h 40m
Multiple Airlines
Sun 8/1612:55 pm
SAI
-
IAD
2 stops33h 40m
Multiple Airlines
Deal found 1/13$1,468
This Booking.com deal was found by Cheapflights users on 1/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/3010:40 am
IAD
-
SAI
2 stops43h 25m
Multiple Airlines
Fri 2/610:00 am
SAI
-
IAD
2 stops58h 20m
Multiple Airlines
Deal found 1/12$1,564
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/69:59 am
DCA
-
SAI
3 stops36h 41m
Singapore Airlines
Sun 8/164:00 pm
SAI
-
DCA
2 stops39h 02m
Singapore Airlines
Deal found 1/13$1,597
This FlightHub deal was found by Cheapflights users on 1/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:05 pm
IAD
-
SAI
3 stops32h 05m
Multiple Airlines
Wed 12/301:20 pm
SAI
-
IAD
2 stops38h 35m
Multiple Airlines
Deal found 1/15$1,611
This Booking.com deal was found by Cheapflights users on 1/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/249:00 pm
IAD
-
SAI
2 stops34h 45m
Multiple Airlines
Sun 8/91:30 pm
SAI
-
IAD
2 stops30h 15m
Multiple Airlines
Deal found 1/13$1,623

Cheapflights Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 January 15, 2026.
Use the filters below to find and compare flights from District of Columbia to Siem Reap that are best for you.

Fly from

District of Columbia

Fly to

Siem Reap

Route

Depart

Return

Price

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Mon 1/19

12:20 pm-9:50 am

2 stops33h 30m

Siem Reap–Angkor Intl

Thu 1/22

4:45 pm-12:59 am

2 stops44h 14m

$1,255

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Mon 1/19

12:20 pm-9:50 am

2 stops33h 30m

Siem Reap–Angkor Intl

Fri 1/23

10:45 am-7:35 am

2 stops32h 50m

$1,255

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Mon 1/19

12:20 pm-9:50 am

2 stops33h 30m

Siem Reap–Angkor Intl

Sat 1/24

4:45 pm-6:47 am

2 stops50h 02m

$1,266

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Tue 1/20

2:10 pm-3:55 pm

2 stops37h 45m

Siem Reap–Angkor Intl

Fri 1/23

10:45 am-6:47 am

2 stops32h 02m

$1,365

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Tue 1/20

6:15 pm-3:55 pm

2 stops33h 40m

Siem Reap–Angkor Intl

Sat 1/24

4:45 pm-6:47 am

2 stops50h 02m

$1,376

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Fri 1/30

10:40 am-6:05 pm

2 stops43h 25m

Siem Reap–Angkor Intl

Fri 2/6

10:00 am-8:20 am

2 stops58h 20m

$1,564

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Thu 1/22

10:30 am-9:10 pm

2 stops46h 40m

Siem Reap–Angkor Intl

Sat 1/24

11:50 pm-8:10 am

2 stops68h 20m

$1,742

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Wed 1/21

8:05 pm-6:45 pm

2 stops34h 40m

Siem Reap–Angkor Intl

Sat 1/24

7:25 pm-3:55 pm

2 stops56h 30m

$1,853

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Wed 1/21

8:05 pm-9:10 am

2 stops25h 05m

Siem Reap–Angkor Intl

Fri 1/23

1:35 pm-3:55 pm

2 stops38h 20m

$1,857

Washington, D.C.Siem Reap

DCA - SAI

DCASAI

Washington, D.C. Reagan-National

Fri 1/30

9:59 am-3:55 pm

2 stops41h 56m

Siem Reap–Angkor Intl

Fri 2/6

10:45 am-8:00 pm

2 stops45h 15m

$1,881

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 31 results
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Best time to book a flight from District of Columbia to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from District of Columbia 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.

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to Siem Reap
No data available for this route at this time. Please check back soon.

Related info for your journey

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

  • What airport do you fly into for flights to Siem Reap from District of Columbia?

    Most people fly into Siem Reap–Angkor Intl (SAI) if they book a flight to Siem Reap from District of Columbia. Siem Reap–Angkor Intl is conveniently located just 24.7 mi from Siem Reap’s city center.

  • How long is the flight from District of Columbia to Siem Reap?

    For as low as $1,255, United Airlines can have you in Siem Reap from District of Columbia in 33h 30m. Airlines will cover a distance of 8814 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from District of Columbia to Siem Reap that include hotel bookings?

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

  • How can I find direct flights from District of Columbia to Siem Reap?

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

  • Can I find deals for business class flights from District of Columbia to Siem Reap?

    Yes. Cheapflights offers flight deals from District of Columbia 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.

See more FAQs

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Alternative routes for District of Columbia to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.
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Long Beach to Siem Reap flights

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