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Phnom Penh

$5,776+ Cheap flights from the United States 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — PNH
Jul 9 — Jul 161
Thu 7/9
Thu 7/16
1 adult, Economy
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Cheap flight deals from USA to Phnom Penh

One-way flights from USA to Phnom Penh
Search for one-way flight options from USA to Phnom Penh. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.

This CheapOair deal was found by Cheapflights users on 6/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:39 pm
BOS
-
PNH
2 stops52h 21m
Multiple Airlines
Deal found 6/4$5,776
This British Airways deal was found by Cheapflights users on 6/4. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:25 pm
IAD
-
PNH
2 stops48h 35m
British Airways
Deal found 6/4$6,096
This British Airways deal was found by Cheapflights users on 6/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:45 pm
IAD
-
PNH
2 stops53h 15m
British Airways
Deal found 6/7$11,876

Find flight deals from USA to Phnom Penh

Keep the following information in mind while searching for USA to Phnom Penh flight deals. Data was last updated June 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

May

Cheapest in

November

Average price

$1,480
Provider with most accurate pricing for New York (NYC)-Phnom Penh Pochentong flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Phnom Penh Pochentong flights.
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($274 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from USA 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 June 9, 2026.
Use the filters below to find and compare flights from the United States to Phnom Penh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest one-way

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Sun 7/19

6:39 pm-10:00 am

2 stops52h 21m

$5,776
Quickest one-way

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Thu 10/15

10:25 pm-10:00 am

2 stops48h 35m

$6,096

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Tue 8/11

5:45 pm-10:00 am

2 stops53h 15m

$11,876

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Wed 8/12

10:25 pm-10:00 am

2 stops48h 35m

$11,876

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/4

Sorted by cheapest first

Best time to book a flight from USA to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from USA 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 the United States to Phnom Penh

What is the cheapest month to book a flight from USA to Phnom Penh?

Currently, September is the cheapest month in which you can book a flight from USA to Phnom Penh (average of $473). Flying from USA to Phnom Penh in June is currently the most expensive (average of $879). 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.

How far ahead should I book a flight from USA to Phnom Penh?

To ensure you get the cheapest price possible for a flight from USA to Phnom Penh, you should look to book at least 61 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

The best insider tips for theUnited States to Phnom Penh flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your theUnited States to Phnom Penh trip
Our travel experts
Duncan Madden

Duncan Madden

Expert on EVA Air

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Yulia Denisyuk

Yulia Denisyuk

Expert on Korean Air and Cathay Pacific

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more
Marisa Garcia

Marisa Garcia

Expert on Asiana Airlines

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on Singapore Airlines

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Robert Schrader

Robert Schrader

Expert on China Airlines

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more

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 June 9, 2026.
See what other customers who have flown with EVA Air,Korean Air, andSingapore Airlines from the United States to Phnom Penh have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.5
Very good
1,469 reviews

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.5

Crew

8.7

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
EVA Air
8.5
Very good
1,469 reviews
EVA Air
8.5
Very good
1,469 reviews

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.5

Crew

8.7

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
Korean Air
8.4
Very good
1,218 reviews
EVA Air
8.5
Very good
1,469 reviews

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.5

Crew

8.7

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
Singapore Airlines
8.2
Very good
1,536 reviews
EVA Air
8.5
Very good
1,469 reviews

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.5

Crew

8.7

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
Asiana Airlines
8.1
Very good
540 reviews
EVA Air
8.5
Very good
1,469 reviews

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.5

Crew

8.7

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼
Cathay Pacific
7.6
Good
1,365 reviews
EVA Air
8.5
Very good
1,469 reviews

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.5

Crew

8.7

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Tony,Jun 2026

NRT - TPE

Great flight and good food…will fly again on Eva air👍🏼

Related info for your journey

Find useful and relevant information for your journey from USA 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 United States?

    For a flight from United States to Phnom Penh, you will be flying into Pochentong. Phnom Penh Pochentong (PNH) is just 5.0 mi from the center of the city.

  • What are the cheapest airlines to fly from USA to Phnom Penh one-way?

    To fly one-way, consider booking your trip with Singapore Airlines, which is currently one of the cheapest options available, starting at $306. Asiana Airlines flights start at $334 while deals on Cathay Pacific start at $355 one-way.

  • What are the most popular routes from USA to Phnom Penh?

    The most popular route from USA to Phnom Penh is Jacksonville - Phnom Penh Pochentong. You may also consider Boston Logan Intl - Phnom Penh Pochentong or Washington, D.C. Dulles Intl - Phnom Penh Pochentong.

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

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

  • How can I find direct flights from USA to Phnom Penh?

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

  • Can I find deals for business class flights from USA to Phnom Penh?

    Yes. Cheapflights offers flight deals from USA 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 USA to Phnom Penh?

    Currently, September is the cheapest month in which you can book a flight from USA to Phnom Penh (average of $473). Flying from USA to Phnom Penh in June is currently the most expensive (average of $879). 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 10 airlines flying from USA to Phnom Penh

Discover the top 10 airlines that operate flights from USA 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 June 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$494Average$1,124FlexibilityNo cancel feeOn-time81%
Singapore AirlinesCheapest$521Average$749FlexibilityNo cancel feeOn-time81%
Philippine AirlinesCheapest$537Average$715FlexibilityNo cancel feeOn-time60%
China SouthernCheapest$560Average$580FlexibilityNo cancel feeOn-time69%
China EasternCheapest$665Average$879FlexibilityNo cancel feeOn-time62%
Cathay PacificCheapest$667Average$1,006FlexibilityNo cancel feeOn-time72%
China AirlinesCheapest$688Average$1,236FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$728Average$1,089FlexibilityNo cancel feeOn-time76%
Vietnam AirlinesCheapest$738Average$747FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$817Average$1,345FlexibilityNo cancel feeOn-time74%

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