What are the cheapest airlines to fly from District of Columbia to Phnom Penh one-way?

For one-way options, check prices for Cathay Pacific. According to our data, you can fly for as low as $699. Users have also found prices from $1,014 and $1,075 on Singapore Airlines and Qatar Airways, respectively.

How far in advance should I book a flight from District of Columbia to Phnom Penh?

Travelers have found it’s best to book a flight 8 days in advance to save up to 6% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 8 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from District of Columbia to Phnom Penh 1-2 weeks in advance for as low as $1,060, or $1,752 for flights within the next 24 hours.

What is the cheapest month to fly from District of Columbia to Phnom Penh?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, September can be a great choice for travel to Phnom Penh. Flights to Phnom Penh from District of Columbia in September are about $1,673 on average during September, but can be found for as low as $1,162.

What airport do you fly into for flights to Phnom Penh from District of Columbia?

Most people fly into Phnom Penh Pochentong (PNH) if they book a flight to Phnom Penh from District of Columbia. Pochentong is conveniently located just 5.0 mi from Phnom Penh’s city center.

How can I find direct flights from District of Columbia to Phnom Penh?

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 Phnom Penh.

Can I find deals for business class flights from District of Columbia to Phnom Penh?

Yes. Cheapflights offers flight deals from District of Columbia 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.

$484+ Flights from District of Columbia to Phnom Penh

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Cheap flight deals from District of Columbia to Phnom Penh

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$1,209 (China Airlines)
One-way from	$484 (Kiwi.com)
Popular in	July
Cheapest in	September
Average price	$1,566

Provider with most accurate pricing for Washington, D.C. (WAS)-Phnom Penh Pochentong flight deals.

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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Phnom Penh Pochentong flights.

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From District of Columbia to Phnom Penh Pochentong

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One-way flight from District of Columbia to Phnom Penh Pochentong

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($177 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($27 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

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Find flight deals from District of Columbia to Phnom Penh

Cheapest flights from District of Columbia to Phnom Penh
Explore the most affordable flight options available from District of Columbia to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

Wed 9/248:07 pmIAD - PNH

2 stops26h 43mMultiple Airlines

Wed 10/110:50 amPNH - IAD

2 stops40h 09mMultiple Airlines

Deal found 4/1

$1,209

Wed 9/249:00 amDCA - PNH

2 stops37h 50mMultiple Airlines

Wed 10/110:50 amPNH - DCA

2 stops45h 09mMultiple Airlines

Deal found 4/1

$1,283

Sun 4/1311:00 amIAD - PNH

2 stops36h 00mMalaysia Airlines

Wed 4/3011:10 amPNH - IAD

2 stops39h 30mMalaysia Airlines

Deal found 4/1

$1,306

Tue 11/49:44 amDCA - PNH

2 stops36h 41mCathay Pacific

Fri 11/217:05 pmPNH - DCA

2 stops33h 20mCathay Pacific

Deal found 4/1

$1,329

Sat 10/2510:05 pmIAD - PNH

1 stop22h 15mEtihad Airways

Tue 11/48:40 amPNH - IAD

1 stop43h 25mEtihad Airways

Deal found 4/1

$1,369

Sat 10/255:00 pmIAD - PNH

3 stops52h 35mSingapore Airlines

Tue 11/47:45 pmPNH - IAD

2 stops55h 15mSingapore Airlines

Deal found 3/31

$1,407

Tue 11/410:00 pmIAD - PNH

1 stop37h 10mAir China

Thu 11/2012:25 amPNH - IAD

1 stop30h 05mAir China

Deal found 4/1

$1,521

Wed 9/248:00 amDCA - PNH

2 stops53h 15mPhilippine Airlines

Tue 9/301:15 amPNH - DCA

2 stops30h 59mPhilippine Airlines

Deal found 4/1

$1,563

Fri 6/201:30 pmIAD - PNH

2 stops32h 05mTurkish Airlines

Mon 7/79:40 amPNH - IAD

2 stops37h 05mTurkish Airlines

Deal found 4/1

$1,630

Fri 10/3112:50 pmIAD - PNH

1 stop22h 35mKorean Air

Fri 11/2111:45 pmPNH - IAD

1 stop22h 05mKorean Air

Deal found 4/1

$1,640

Wed 9/249:00 amIAD - PNH

2 stops52h 15mPhilippine Airlines

Tue 9/301:15 amPNH - IAD

2 stops41h 17mPhilippine Airlines

Deal found 4/1

$1,648

Wed 9/249:00 pmIAD - PNH

1 stop32h 15mQatar Airways

Wed 10/15:40 pmPNH - IAD

1 stop33h 00mQatar Airways

Deal found 4/1

$1,733

Best flights from District of Columbia to Phnom Penh
Discover carefully curated flight deals from District of Columbia to Phnom Penh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 2, 2025.

Wed 9/248:07 pmIAD - PNH

2 stops26h 43mMultiple Airlines

Wed 10/110:50 amPNH - IAD

2 stops40h 09mMultiple Airlines

Deal found 4/1

$1,209

Sun 4/1311:00 amIAD - PNH

2 stops36h 00mMalaysia Airlines

Wed 4/3011:10 amPNH - IAD

2 stops39h 30mMalaysia Airlines

Deal found 4/1

$1,306

Thu 6/1910:05 pmIAD - PNH

2 stops47h 30mEtihad Airways

Mon 7/79:25 amPNH - IAD

2 stops41h 45mEtihad Airways

Deal found 4/1

$1,428

Wed 9/248:07 pmIAD - PNH

2 stops49h 33mSingapore Airlines

Wed 10/16:55 pmPNH - IAD

3 stops56h 04mSingapore Airlines

Deal found 4/1

$1,458

Wed 9/248:00 amDCA - PNH

2 stops53h 15mPhilippine Airlines

Tue 9/301:15 amPNH - DCA

2 stops30h 59mPhilippine Airlines

Deal found 4/1

$1,563

Fri 6/201:30 pmIAD - PNH

2 stops32h 05mTurkish Airlines

Mon 7/79:40 amPNH - IAD

2 stops37h 05mTurkish Airlines

Deal found 4/1

$1,630

Wed 9/249:00 pmIAD - PNH

1 stop32h 15mQatar Airways

Wed 10/15:40 pmPNH - IAD

1 stop33h 00mQatar Airways

Deal found 4/1

$1,733

Sat 4/1911:00 pmIAD - PNH

3 stops49h 10mAir China

Fri 4/2512:20 amPNH - IAD

1 stop30h 10mAir China

Deal found 4/1

$1,802

Mon 8/111:30 pmIAD - PNH

1 stop21h 40mKorean Air

Sun 8/3111:30 pmPNH - IAD

1 stop22h 25mKorean Air

Deal found 4/1

$1,890

Sun 6/111:55 amDCA - PNH

2 stops35h 20mCathay Pacific

Sat 6/76:30 pmPNH - DCA

2 stops48h 20mCathay Pacific

Deal found 4/1

$1,961

Mon 8/113:39 pmIAD - PNH

3 stops37h 56mEmirates

Sun 8/318:50 pmPNH - IAD

3 stops38h 09mEmirates

Deal found 4/1

$2,056

Wed 9/249:00 amDCA - PNH

2 stops37h 50mMultiple Airlines

Wed 10/110:50 amPNH - DCA

2 stops45h 09mMultiple Airlines

Deal found 4/1

$1,283

Last-minute flights from District of Columbia to Phnom Penh
Discover last-minute flight deals from District of Columbia to Phnom Penh. Data last updated April 2, 2025 and is based on user searches.

Wed 4/27:31 amIAD - PNH

2 stops47h 09mSingapore Airlines

Tue 4/226:55 pmPNH - IAD

2 stops56h 05mSingapore Airlines

Deal found 4/1

$1,498

Wed 4/28:59 amDCA - PNH

3 stops36h 41mSingapore Airlines

Tue 4/222:05 pmPNH - DCA

2 stops41h 53mSingapore Airlines

Deal found 4/1

$1,807

Wed 4/26:00 amDCA - PNH

2 stops41h 15mCathay Pacific

Tue 4/2211:25 amPNH - DCA

2 stops45h 50mCathay Pacific

Deal found 4/1

$1,851

Wed 4/25:00 pmDCA - PNH

3 stops36h 35mEmirates

Tue 4/228:50 pmPNH - DCA

3 stops36h 45mEmirates

Deal found 4/1

$2,323

Sun 4/1311:00 amIAD - PNH

2 stops36h 00mMalaysia Airlines

Wed 4/3011:10 amPNH - IAD

2 stops39h 30mMalaysia Airlines

Deal found 4/1

$1,306

Sun 4/131:15 pmIAD - PNH

1 stop21h 55mKorean Air

Wed 4/3011:30 pmPNH - IAD

2 stops35h 58mKorean Air

Deal found 4/1

$2,244

Sat 4/1911:00 pmIAD - PNH

3 stops49h 10mAir China

Fri 4/2512:20 amPNH - IAD

1 stop30h 10mAir China

Deal found 4/1

$1,802

Sat 4/195:10 pmIAD - PNH

3 stops36h 25mEmirates

Sat 4/268:50 pmPNH - IAD

2 stops46h 50mEmirates

Deal found 4/1

$2,069

Fri 5/1611:00 amIAD - PNH

1 stop32h 10mMultiple Airlines

Fri 5/237:10 pmPNH - IAD

2 stops31h 35mMultiple Airlines

Deal found 4/1

$1,280

Fri 5/168:59 amDCA - PNH

2 stops37h 51mMultiple Airlines

Fri 5/2310:50 amPNH - DCA

2 stops41h 48mMultiple Airlines

Deal found 4/1

$1,816

Fri 5/1611:00 amIAD - PNH

1 stop42h 15mQatar Airways

Fri 5/235:40 pmPNH - IAD

1 stop33h 00mQatar Airways

Deal found 4/1

$2,125

Fri 5/168:15 amDCA - PNH

2 stops29h 00mPhilippine Airlines

Thu 5/221:15 amPNH - DCA

2 stops50h 29mPhilippine Airlines

Deal found 4/1

$2,263

One-way flights from District of Columbia to Phnom Penh
Search for one-way flight options from District of Columbia to Phnom Penh. Find affordable one-way fares based on user searches. Data last updated April 2, 2025.

Sun 5/411:00 amIAD - PNH

2 stops37h 20mMultiple Airlines

Deal found 4/1

$484

Tue 4/811:54 amDCA - PNH

2 stops35h 21mCathay Pacific

Deal found 4/1

$699

Sun 5/48:00 amDCA - PNH

2 stops27h 55mMultiple Airlines

Deal found 4/1

$748

Sun 5/48:59 amDCA - PNH

3 stops36h 41mSingapore Airlines

Deal found 4/1

$1,014

Sun 5/49:00 pmIAD - PNH

1 stop32h 15mQatar Airways

Deal found 4/1

$1,075

Tue 4/81:15 pmIAD - PNH

1 stop21h 55mKorean Air

Deal found 4/1

$1,181

Cheapflights Fare Finder

Use the filters below to find and compare flights from District of Columbia to Phnom Penh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Wed 9/24

8:07 pm-9:50 am

2 stops26h 43m

Phnom Penh Pochentong

Wed 10/1

10:50 am-3:59 pm

2 stops40h 09m

$1,209

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Wed 9/24

9:00 am-9:50 am

2 stops37h 50m

Phnom Penh Pochentong

Wed 10/1

10:50 am-8:59 pm

2 stops45h 09m

$1,283

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sun 4/13

11:00 am-10:00 am

2 stops36h 00m

Phnom Penh Pochentong

Wed 4/30

11:10 am-3:40 pm

2 stops39h 30m

$1,306

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Thu 6/19

10:05 pm-8:35 am

2 stops47h 30m

Phnom Penh Pochentong

Mon 7/7

9:25 am-4:10 pm

2 stops41h 45m

$1,428

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Wed 9/24

8:07 pm-8:40 am

2 stops49h 33m

Phnom Penh Pochentong

Wed 10/1

6:55 pm-3:59 pm

3 stops56h 04m

$1,458

Washington, D.C.Phnom Penh

DCA - PNH

DCAPNH

Washington, D.C. Reagan-National

Wed 9/24

8:00 am-12:15 am

2 stops53h 15m

Phnom Penh Pochentong

Tue 9/30

1:15 am-9:14 pm

2 stops30h 59m

$1,563

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Fri 6/20

1:30 pm-8:35 am

2 stops32h 05m

Phnom Penh Pochentong

Mon 7/7

9:40 am-11:45 am

2 stops37h 05m

$1,630

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Wed 9/24

9:00 am-12:15 am

2 stops52h 15m

Phnom Penh Pochentong

Tue 9/30

1:15 am-7:32 am

2 stops41h 17m

$1,648

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Wed 9/24

9:00 pm-4:15 pm

1 stop32h 15m

Phnom Penh Pochentong

Wed 10/1

5:40 pm-3:40 pm

1 stop33h 00m

$1,733

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sat 4/19

11:00 pm-11:10 am

3 stops49h 10m

Phnom Penh Pochentong

Fri 4/25

12:20 am-7:30 pm

1 stop30h 10m

$1,802

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 24 results

Best time to book a flight from District of Columbia to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh 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 Phnom Penh

What is the cheapest month to book a flight from District of Columbia to Phnom Penh?

Currently, March is the cheapest month in which you can book a flight from District of Columbia to Phnom Penh (average of $994). Flying from District of Columbia to Phnom Penh in June is currently the most expensive (average of $1,582). 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.

What is the cheapest time of day to fly from DC to PNH?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from District of Columbia to Phnom Penh as you normally would.

Rainfall in Phnom Penh by month

In terms of precipitation, rainfall in Phnom Penh ranges from 0.0 - 9.8 inches per month. October is typically the wettest month, when rainfall can reach 9.8 in. January is typically the driest time to visit Phnom Penh when rainfall is around 0.0 in.

Temperature in Phnom Penh by month

If weather is an important factor for your trip to Phnom Penh, 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 77.0 F).

Reviews of airlines servicing Phnom Penh

To help decide which airline to fly from District of Columbia to Phnom Penh, see what other customers have to say about Korean Air, Singapore Airlines and Emirates. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very good

1,052 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Korean Air

8.4

Very good

1,052 reviews

Korean Air

8.4

Very good

1,052 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Singapore Airlines

8.1

Very good

1,288 reviews

Korean Air

8.4

Very good

1,052 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Emirates

8.0

Very good

3,192 reviews

Korean Air

8.4

Very good

1,052 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Cathay Pacific

7.5

Good

841 reviews

Korean Air

8.4

Very good

1,052 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Qatar Airways

7.4

Good

3,540 reviews

Korean Air

8.4

Very good

1,052 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Related info for your journey

What airport do you fly into for flights to Phnom Penh from District of Columbia?
Most people fly into Phnom Penh Pochentong (PNH) if they book a flight to Phnom Penh from District of Columbia. Pochentong is conveniently located just 5.0 mi from Phnom Penh’s city center.
What are the cheapest airlines to fly from District of Columbia to Phnom Penh one-way?
For one-way options, check prices for Cathay Pacific. According to our data, you can fly for as low as $699. Users have also found prices from $1,014 and $1,075 on Singapore Airlines and Qatar Airways, respectively.
Can I find deals for flights from District of Columbia to Phnom Penh that include hotel bookings?
Yes. In addition to deals on District of Columbia to Phnom Penh flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from District of Columbia to Phnom Penh?
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 Phnom Penh.
Can I find deals for business class flights from District of Columbia to Phnom Penh?
Yes. Cheapflights offers flight deals from District of Columbia 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 District of Columbia to Phnom Penh?
Currently, March is the cheapest month in which you can book a flight from District of Columbia to Phnom Penh (average of $994). Flying from District of Columbia to Phnom Penh in June is currently the most expensive (average of $1,582). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from District of Columbia to Phnom Penh

Airline	Cheapest	Average	Flexibility	On-time
Etihad Airways	Cheapest$1,048	Average$1,118	FlexibilityNo cancel fee	On-time75%
Singapore Airlines	Cheapest$1,239	Average$1,419	FlexibilityNo cancel fee	On-time81%
Qatar Airways	Cheapest$1,299	Average$1,537	FlexibilityNo cancel fee	On-time68%
Malaysia Airlines	Cheapest$1,334	Average$1,384	FlexibilityNo cancel fee	On-time67%
Korean Air	Cheapest$1,341	Average$1,822	FlexibilityNo cancel fee	On-time81%

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$484+ Cheap flights from District of Columbia to Phnom Penh (PNH)

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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from District of Columbia to Phnom Penh with Cheapflights

1. Tell us where you want to go

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3. Compare prices and book

Cheap flight deals from District of Columbia to Phnom Penh

Keep the following information in mind while searching for District of Columbia to Phnom Penh flight deals. Data was last updated April 2, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from District of Columbia to Phnom Penh

Cheapest flights from District of Columbia to Phnom PenhExplore the most affordable flight options available from District of Columbia to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

Explore the most affordable flight options available from District of Columbia to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from District of Columbia to Phnom Penh that are best for you.

Best time to book a flight from District of Columbia to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from District of Columbia with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to Phnom Penh

What is the cheapest month to book a flight from District of Columbia to Phnom Penh?

What is the cheapest time of day to fly from DC to PNH?

Find hourly flight availability from District of Columbia to Phnom Penh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 2, 2025.

Rainfall in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average rainfall totals by month.

Temperature in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average temperature totals by month.

Reviews of airlines servicing Phnom Penh

Related info for your journey

Find useful and relevant information for your journey from District of Columbia 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 District of Columbia?

What are the cheapest airlines to fly from District of Columbia to Phnom Penh one-way?

Can I find deals for flights from District of Columbia to Phnom Penh that include hotel bookings?

How can I find direct flights from District of Columbia to Phnom Penh?

Can I find deals for business class flights from District of Columbia to Phnom Penh?

What is the cheapest month to book a flight from District of Columbia to Phnom Penh?

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Cheapest flights from District of Columbia to Phnom Penh
Explore the most affordable flight options available from District of Columbia to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.