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 $494). Flying from USA to Phnom Penh in June is currently the most expensive (average of $858). 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 day to fly from USA to Phnom Penh?

Travelers seeking maximum savings on their USA to Phnom Penh flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

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

The most popular route from USA to Phnom Penh is Washington, D.C. Dulles Intl - Phnom Penh Pochentong. You may also consider Seattle/Tacoma Intl - Phnom Penh Pochentong or San Francisco - Phnom Penh Pochentong.

What are the most popular airlines that fly from USA to Phnom Penh?

Before booking your flight from USA to Phnom Penh check out the most popular airlines for this route: Korean Air, EVA Air or Cathay Pacific.

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

One of the essential ways to save on airfare from USA to Phnom Penh is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 6% on airfare.

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.

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.

Find Flights from the United States to Phnom Penh

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	June
Cheapest in	November
Average price	$1,212

Korean Air

Korean Air's economy class offers 33”-34” pitch, providing more space than many competitors.

Korean Air's Prestige Suites offer lie-flat seats with 75” pitch and 21” width.

Read more about Korean Airby Yulia Denisyuk

EVA Air

EVA Air's Royal Laurel Class offers lie-flat seats with 82” pitch and 1-2-1 configuration.

EVA Air's economy class offers 33” pitch on 777s, providing ample legroom for long-haul flights.

Cathay Pacific

Cathay Pacific's economy class offers 32” pitch and 18”-18.5” width, exceeding US counterparts.

Cathay Pacific's business class offers reverse herringbone seats with 81” pitch on Boeing 777s.

Read more about Cathay Pacificby Yulia Denisyuk

China Airlines

China Airlines' Premium Business Class offers lie-flat seats in a 1-2-1 configuration.

China Airlines' economy class offers 32” pitch and complimentary beer, wine, and spirits.

Read more about China Airlinesby Robert Schrader

Singapore Airlines

Singapore Airlines offers free unlimited Wi-Fi for all passengers, enhancing connectivity during flights.

Singapore's premium economy offers 38” legroom, upgraded meals, and noise-canceling headphones.

Read more about Singapore Airlinesby Gabriel Leigh

Asiana Airlines

Asiana's A380 business suite offers a 25”-wide seat converting to a fully flat 81” bed.

Economy seats on Asiana's A350 are 18” wide with 32”-33” pitch, offering in-flight Wi-Fi.

Read more about Asiana Airlinesby Marisa Garcia

Airline	Cheapest	Average	Flexibility	On-time
China Southern	Cheapest$560	Average$979	FlexibilityNo cancel fee	On-time69%
Singapore Airlines	Cheapest$568	Average$1,067	FlexibilityNo cancel fee	On-time81%
Air China	Cheapest$644	Average$702	FlexibilityNo cancel fee	On-time67%
China Eastern	Cheapest$652	Average$982	FlexibilityNo cancel fee	On-time62%
Philippine Airlines	Cheapest$661	Average$757	FlexibilityNo cancel fee	On-time60%
Cathay Pacific	Cheapest$678	Average$1,026	FlexibilityNo cancel fee	On-time72%
Asiana Airlines	Cheapest$694	Average$1,086	FlexibilityNo cancel fee	On-time76%
Korean Air	Cheapest$732	Average$1,199	FlexibilityNo cancel fee	On-time81%
Vietnam Airlines	Cheapest$736	Average$772	FlexibilityNo cancel fee	On-time81%
China Airlines	Cheapest$769	Average$1,249	FlexibilityNo cancel fee	On-time70%

Cheap flights from the United States to Phnom Penh (PNH)

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Cheap 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 October 16, 2025.

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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?

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

What is the cheapest day to fly from USA to Phnom Penh?

The best insider tips for theUnited States to Phnom Penh flights

Cheapflights partnered with top experts to bring you the best recommendations for your theUnited States to Phnom Penh trip

Airlines

Korean Air

EVA Air

Cathay Pacific

China Airlines

Singapore Airlines

Asiana Airlines

Our travel experts

Reviews of airlines servicing Phnom Penh

See what other customers who have flown with EVA Air, Korean Air, and China 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.

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?

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

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

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

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

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

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