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Phnom Penh

$2,601+ Cheap flights from Reagan-National (DCA) to Phnom Penh (PNH)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — PNH
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Reagan-National to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Phnom Penh (PNH). 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 September 11, 2025.

Round-trip from

$2,601
(Mytrip)

Popular in

December

Cheapest in

August

Average price

$1,325
From Washington, D.C. Reagan-National to Phnom Penh Pochentong
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Highest demand for flights based on searches. 10% potential increase in price ($179 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($64 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Reagan-National to Phnom Penh

Cheapest flights from Reagan-National to Phnom Penh
Explore the most affordable flight options available from Reagan-National to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/79:40 amDCA - PNH
3 stops34h 15mMultiple Airlines
Tue 10/148:30 amPNH - DCA
3 stops35h 29mMultiple Airlines
Deal found 9/10$2,601
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/254:35 pmDCA - PNH
3 stops26h 55mMultiple Airlines
Sat 11/17:50 pmPNH - DCA
2 stops35h 55mMultiple Airlines
Deal found 9/10$3,018
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:50 pmDCA - PNH
3 stops35h 35mMultiple Airlines
Fri 11/287:55 amPNH - DCA
3 stops47h 50mMultiple Airlines
Deal found 9/9$4,066

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National to Phnom Penh 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 September 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Phnom Penh that are best for you.

Fly from

Reagan-National

Fly to

Phnom Penh

Route

Depart

Return

Price

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Tue 10/7

9:40 am-6:55 am

3 stops34h 15m

Phnom Penh Pochentong

Tue 10/14

8:30 am-8:59 am

3 stops35h 29m

$2,601

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Sat 10/25

4:35 pm-6:30 am

3 stops26h 55m

Phnom Penh Pochentong

Sat 11/1

7:50 pm-8:45 pm

2 stops35h 55m

$3,018

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Thu 11/6

6:50 pm-6:25 pm

3 stops35h 35m

Phnom Penh Pochentong

Fri 11/28

7:55 am-7:45 pm

3 stops47h 50m

$4,066

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Tue 10/7

1:35 pm-6:55 am

2 stops30h 20m

$9,311

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Tue 12/30

11:20 am-6:25 pm

2 stops43h 05m

$9,312

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Sat 2/21

10:45 am-6:30 am

2 stops31h 45m

$9,312

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Fri 10/17

5:20 pm-6:55 am

2 stops50h 35m

$9,535

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Mon 11/24

5:43 pm-6:25 pm

2 stops60h 42m

$9,535

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Mon 1/5

4:45 pm-6:25 pm

2 stops61h 40m

$9,551

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Sat 10/4

11:15 am-6:55 am

2 stops32h 40m

$9,727

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 12 results
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Best time to book a flight from Reagan-National to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from Reagan-National 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.

Reviews of airlines servicing Phnom Penh

Get insights into the airlines that provide service to Phnom Penh. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Phnom Penh. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown Asiana Airlines from Washington, D.C. Reagan-National Airport to Phnom Penh. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Asiana Airlines
8.2
Very good
479 reviews

Crew

8.6

Overall

8.2

Entertainment

7.8

Comfort

8.1

Food

8.1

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dana,Aug 2025

MNL - ICN

Air Asana helped me so much because I had previously canceled flights and they booked me. They helped me through the whole process of getting a new flight. The staff was courteous and helpful kind, and they assisted me with everything that I needed. They provided plenty of water and the food was good as well. Thank you so much to the Asana airline staff.!!
Asiana Airlines
8.2
Very good
479 reviews
Asiana Airlines
8.2
Very good
479 reviews

Crew

8.6

Overall

8.2

Entertainment

7.8

Comfort

8.1

Food

8.1

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Dana,Aug 2025

MNL - ICN

Air Asana helped me so much because I had previously canceled flights and they booked me. They helped me through the whole process of getting a new flight. The staff was courteous and helpful kind, and they assisted me with everything that I needed. They provided plenty of water and the food was good as well. Thank you so much to the Asana airline staff.!!

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Phnom Penh. 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 Phnom Penh from Washington, D.C. Reagan-National?

    Phnom Penh Pochentong (PNH), located 5.0 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Reagan-National to Phnom Penh. 1 airline have flights to Pochentong from Washington, D.C. Reagan-National on a regular basis. Booking flights from Washington, D.C. Reagan-National to Phnom Penh Pochentong should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Reagan-National per day.

  • What is the cheapest airline to fly from Washington, D.C. Reagan-National Airport to Phnom Penh round-trip?

    Our cheapest airline available from Washington, D.C. Reagan-National Airport to Phnom Penh is Asiana Airlines. Our recent data shows that you can find tickets from as low as $1,415 on this airline.

  • Can I find deals for flights from Reagan-National to Phnom Penh that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Phnom Penh flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Phnom Penh?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Phnom Penh.

  • Can I find deals for business class flights from Reagan-National to Phnom Penh?

    Yes. Cheapflights offers flight deals from Reagan-National to Phnom Penh by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Phnom Penh?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Phnom Penh (average of $983). Flying from Washington, D.C. Reagan-National Airport to Phnom Penh in June is currently the most expensive (average of $1,553). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Reagan-National to Phnom Penh

Discover the top airline that operate flights from Reagan-National to Phnom Penh. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$1,415Average$1,415FlexibilityNo cancel feeOn-time76%

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