BOS - PNH

$2,947 Find Cheap Flights from Boston to Phnom Penh

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Phnom Penh departing on 7/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Phnom Penh

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Phnom Penh, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Phnom Penh, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$2,947
Overall average: $1,538
British Airways
Sun 7/12Fri 7/31
BOS - PNH • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Boston and Phnom Penh. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $1,185 (round-trip)
Shortest trip • 22h 41m (one-way)
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 17% compared to booking last minute.
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When to travel
Cheapest • 24% price drop
Most popular
Good to know
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Phnom Penh!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Phnom Penh (BOS-PNH)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Phnom Penh that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Phnom Penh

Sun, Jul 12 - Fri, Jul 31
British Airways Logo
7:30 pm - 10:00 am
BOS
-
PNH
51h 30m
2 stops
British Airways Logo
6:20 pm - 12:35 pm
PNH
-
BOS
29h 15m
2 stops
$2,947British Airways
Sat, Jul 18 - Sat, Aug 1
British Airways Logo
9:50 pm - 10:00 am
BOS
-
PNH
49h 10m
2 stops
British Airways Logo
6:20 pm - 12:35 pm
PNH
-
BOS
29h 15m
2 stops
$3,278British Airways
Sun, Jul 12 - Sat, Jul 25
British Airways Logo
8:25 pm - 10:00 am
BOS
-
PNH
50h 35m
2 stops
British Airways Logo
6:20 pm - 4:55 pm
PNH
-
BOS
33h 35m
2 stops
$3,388British Airways
Sun, Jul 12 - Sat, Jul 25
Multiple Airlines Logo
8:25 pm - 10:00 am
BOS
-
PNH
26h 35m
3 stops
Multiple Airlines Logo
6:20 pm - 12:35 pm
PNH
-
BOS
29h 15m
2 stops
$12,230Multiple Airlines
Booking Insights

KAYAK's insights & trends for Boston to Phnom Penh flights

Get data-powered insights and trends into flights from Boston to Phnom Penh to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Boston to Phnom Penh?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Phnom Penh, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Phnom Penh is November, where tickets cost $890 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,646 and $1,538 respectively.

How far in advance should I book a flight from Boston to Phnom Penh?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Phnom Penh, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Phnom Penh, you should book around 4 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$2,947
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly with an average 18% increase in price.
Flight from Boston to Phnom Penh

When to book flights from Boston to Phnom Penh

Are your dates flexible? Find out the best times to travel from Boston to Phnom Penh based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Phnom Penh

  • What is the cheapest flight from Boston to Phnom Penh?

    In the last 3 days, the lowest price for a flight from Boston to Phnom Penh was $2,947 for a round-trip ticket.

  • Do I need a passport to fly between Boston and Phnom Penh?

    Yes, you’ll need a passport to travel to Phnom Penh from Boston.

  • Which aircraft models fly most regularly from Boston to Phnom Penh?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Phnom Penh?

    oneworld, and SkyTeam are the airline alliances operating flights between Boston and Phnom Penh, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Phnom Penh from Boston?

    Seoul is the most popular layover city among KAYAK users traveling from Boston to Phnom Penh.

  • Which is the best airline for flights from Boston to Phnom Penh, Korean Air or Emirates?

    The two airlines most popular with KAYAK users for flights from Boston to Phnom Penh are Korean Air and Emirates. With an average price for the route of $953 and an overall rating of 8.4, Korean Air is the most popular choice. Emirates is also a great choice for the route, with an average price of $1,474 and an overall rating of 8.1.

  • How does KAYAK find such low prices on flights from Boston to Phnom Penh?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Phnom Penh.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Phnom Penh?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Phnom Penh from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Phnom Penh?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Phnom Penh with an airline and back to Boston with another airline. Booking your flights between Boston and PNH can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Phnom Penh?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Phnom Penh from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Boston to Phnom Penh

 
See real verified KAYAK customer reviews for airlines flying from Boston to Phnom Penh. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Phnom Penh? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1205 reviews
8.1Food
8.7Crew
8.2Entertainment
8.3Comfort
8.5Boarding
Airline reviews

Great service and comfort level. You can have more of vegetarian food options.

10.0 ExcellentAnonymous, Nov 2025
ICN - SFO
Read more Korean Air reviews

Great service and comfort level. You can have more of vegetarian food options.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

Plane took off on time and I had the whole row to myself!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Very good from the beginning to the end. Amazing experience

I liked the newer aircraft CRJ-550 since it had WIFI and the seats are more spacious.

Fly Dubai takes low cost and thrift to new depths in terms of service levels, terminal 2 is grossly inadequate for capacity and resembles a crowded buss or railway station,, the fly dubai( Emirates) flight is never on time(was 2.5 hrs delayed), and this is not an isolated experience, the flght air conditioning was turned low while we waited on the tarmac for take clearance to save fuel, should say more!!!! The depths! I only fly this airline from a compulsion, emirates code shares for connections to Muscat

They changed the flight time without telling us and were unwilling to help with rebooking because we booked through orbits/kayak

Emirates did great! I liked the service, the food, cleanness, and the flight was on time. Much better airline than Qatar Airways I flew with last year.

I lost my lock from my luggage, I don’t know someone took something from my bag.

Except for the uncleaned tray, and the delay in serving food for our section (which may have been due to the location of our row) everything else was good. The crew were very professional and responded to our requests promptly throughout the flight. We as a family were not disappointed by Emirates.

It was great, a little more leg room would have been better particularly since we were in premium economy

The boarding process was smooth and the stewardesses were nice. Some delays with drinks at the end of the flight, but no issues.

Thay crew was so nice.Air hostess il ham was so nice.my mom was little scray with airplan turbulence she help us alot.

when i ask for help all the crew members had a look like why are you calling me? very terse and rude.

Good service and food. However, we paid over $400 for aisle seats for my disabled husband and me, and we were given window and middle seats. This was dangerous for our health condition on such a long flight. We needed to stand up and walk around frequently, but we were stuck in our seats. Please give us a refund of our seat payment since you chose not to honor our request.

After each meal was served I didn't see any flight attendant offer coffee or tea to the passengers after the initial drinks were offered. Other flights I had been one it was standard procedure to offer hot drinks after the meal service.

Very bad Instead 22 hour it take me more that 35 hour to arrive from Los Angeles to Phuket and they changed my flight in Hong Kong to Shanghai china and in order to get my bag I was forced to vet china visa entrry

There could have been more options on the entertainment section Nothing was available for non English speaking passengers

I didn't have much experience with Cathay Pacific airlines because of delay and missed connections, the bulk of the trip was on Japan Airlines.

Flight delayed first from bad weather, then after boarding there was a problem with the plane. We had to get off and onto another plane...connections were missed and the trip took an additional 10 hours!! Pre-paid seatting was not honored due ro last minute carrier changes. Most of the trip was on Japan Airline.

Crew and food were great in-flight. We had a 2 hour delay, no communication, and just got left in a limbo. The crew arrived late and they were running checkouts on the plane (which is important, but why not doing it earlier?) Cathay did nothing to about the delay, and a lot of people missed their connection flights. I had to run and got stuck at checkpoint, which made my entire trip very unpleasant. Got to my gate 5 mins prior to them closing it.

My flight was suppose to be at 7:45pm to fly but it didnt fly out until 8:55 to dallas so then all of my other flights was late and delay ihad to wait at the airport for extra 14 hours to be able to get on a different plane

There were delays at boarding and landing. These events resulted in a tight transfer time in HK. Poor signage for transfers. Finally, lost luggage at final destination.

Everything you need to know for your flight from Boston to Phnom Penh

Information on your arrival and departure airports