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Phnom Penh

$396+ Cheap flights from Boston (BOS) 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — PNH
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Phnom Penh Pochentong are usually found in March or April, booked 21 days in advance, depart on a Monday or Tuesday and return on a Friday

Cheap flight deals from Boston to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 June 12, 2025.

Round-trip from

$767
(oojo)

One-way from

$396
(oojo)

Popular in

June

Cheapest in

March

Average price

$1,761
From Boston Logan Intl to Phnom Penh Pochentong
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One-way flight from Boston Logan Intl to Phnom Penh Pochentong
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Highest demand for flights based on searches. 19% potential increase in price ($313 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Boston to Phnom Penh

Cheapest flights from Boston to Phnom Penh
Explore the most affordable flight options available from Boston to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This oojo deal was found by Cheapflights users on 6/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/411:00 amBOS - PNH
1 stop23h 25mKorean Air
Wed 11/1211:45 pmPNH - BOS
1 stop20h 55mKorean Air
Deal found 6/10$767
This Gurufare deal was found by Cheapflights users on 6/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/612:55 pmBOS - PNH
1 stop22h 15mMultiple Airlines
Fri 11/711:55 pmPNH - BOS
1 stop20h 45mMultiple Airlines
Deal found 6/11$851
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/112:30 amBOS - PNH
1 stop21h 55mCathay Pacific
Thu 3/2611:45 amPNH - BOS
1 stop22h 15mCathay Pacific
Deal found 6/12$959
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/28:00 pmBOS - PNH
2 stops26h 05mTurkish Airlines
Tue 3/247:25 pmPNH - BOS
2 stops34h 40mTurkish Airlines
Deal found 6/12$1,060
This Trip.com deal was found by Cheapflights users on 6/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/15:10 pmBOS - PNH
1 stop26h 20mEtihad Airways
Sat 11/157:55 pmPNH - BOS
1 stop30h 45mEtihad Airways
Deal found 6/10$1,095
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/710:00 pmBOS - PNH
2 stops31h 15mQatar Airways
Fri 3/275:10 pmPNH - BOS
2 stops32h 45mQatar Airways
Deal found 6/12$1,117
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/410:30 amBOS - PNH
3 stops39h 20mSingapore Airlines
Wed 11/127:45 pmPNH - BOS
3 stops32h 35mSingapore Airlines
Deal found 6/10$1,166
This oojo deal was found by Cheapflights users on 6/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/19:20 amBOS - PNH
2 stops51h 55mPhilippine Airlines
Tue 10/281:15 amPNH - BOS
2 stops41h 14mPhilippine Airlines
Deal found 6/9$1,179

Cheapflights Fare Finder

Customize your flight search to find flights from Boston 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 12, 2025.
Use the filters below to find and compare flights from Boston to Phnom Penh that are best for you.

Fly from

Boston

Fly to

Phnom Penh

Route

Depart

Return

Price

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Tue 11/4

11:00 am-10:25 pm

1 stop23h 25m

Phnom Penh Pochentong

Wed 11/12

11:45 pm-8:40 am

1 stop20h 55m

$767

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Mon 10/6

12:55 pm-10:10 pm

1 stop22h 15m

Phnom Penh Pochentong

Fri 11/7

11:55 pm-8:40 am

1 stop20h 45m

$851

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Mon 12/1

12:30 am-10:25 am

1 stop21h 55m

Phnom Penh Pochentong

Tue 3/24

11:45 am-11:00 pm

1 stop22h 15m

$959

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Tue 12/2

8:00 pm-10:05 am

2 stops26h 05m

Phnom Penh Pochentong

Wed 4/1

7:25 pm-7:40 pm

2 stops35h 15m

$1,060

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Sat 11/1

5:10 pm-6:30 am

1 stop26h 20m

Phnom Penh Pochentong

Sat 11/15

7:55 pm-2:40 pm

1 stop30h 45m

$1,095

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Tue 10/7

10:00 pm-4:15 pm

2 stops31h 15m

Phnom Penh Pochentong

Fri 3/27

5:10 pm-2:55 pm

2 stops32h 45m

$1,117

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Tue 11/4

10:30 am-1:50 pm

3 stops39h 20m

Phnom Penh Pochentong

Wed 11/12

7:45 pm-4:20 pm

3 stops32h 35m

$1,166

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Wed 10/1

9:20 am-12:15 am

2 stops51h 55m

Phnom Penh Pochentong

Tue 10/28

1:15 am-7:29 am

2 stops41h 14m

$1,179

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Mon 9/22

12:55 pm-10:10 pm

1 stop22h 15m

$396

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Mon 9/22

7:00 pm-10:20 pm

3 stops40h 20m

$581

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 15 results
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Best time to book a flight from Boston to Phnom Penh

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

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to Phnom Penh. Price data was last updated on June 9, 2025.

The price you pay for your flight from Boston to Phnom Penh may vary depending on when you book. For the best chance of a lower fare, look to book 21 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, March is the cheapest month in which you can book a flight from Boston to Phnom Penh (average of $991). Flying from Boston to Phnom Penh in June is currently the most expensive (average of $1,570). 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 BOS to PNH?

Find hourly flight availability from Boston 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 June 12, 2025.

When flying from Boston to Phnom Penh, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 25% versus a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Boston to Phnom Penh. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boston to Phnom Penh flight should consider departing on Wednesday evenings 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.

Rainfall in Phnom Penh by month

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

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

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 12, 2025.
Get a feel of what it's like to fly with Korean Air, Emirates and Singapore Airlines from Boston to Phnom Penh by reading reviews from past customers. 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.
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Korean Air
8.4
Very good
1,088 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Emirates
8.1
Very good
3,264 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Singapore Airlines
8.1
Very good
1,302 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Cathay Pacific
7.6
Good
892 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Qatar Airways
7.4
Good
3,584 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Related info for your journey

Find useful and relevant information for your journey from Boston 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 are the cheapest airlines flying from Boston to Phnom Penh round-trip?

    Flying on Korean Air is currently your cheapest option to Phnom Penh, with prices starting at $767. Additional round-trip tickets that might be worth considering are offered by Cathay Pacific and Turkish Airlines, with the lowest prices starting at $959 and $1,060, respectively. Korean Air is priced at 40% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is Korean Air, with whom users have recently found tickets for as low as $396. However, be on the lookout for offers from Air China and Cathay Pacific, as they are both options that can get you from Boston to Phnom Penh for a low price.

  • Where are the most common layover locations when flying from Boston to Phnom Penh?

    Boston to Phnom Penh flights have a layover in Seoul most of the time.

  • What are some popular things to do or see while on a layover in Seoul?

    If you're on a layover in Seoul and looking for things to do, consider visiting Dongdaemun Market, Bukchon Hanok Village, or Lotte World. Dongdaemun Market, Bukchon Hanok Village, and Lotte World can be visited by traveling about 31.6 mi, 30.6 mi, and 35.7 mi respectively from Incheon Intl. Those looking to explore during their layover in Seoul can rent a car from Incheon Intl for about $54 per day.

  • Where are the least popular layover locations for Boston to Phnom Penh flights?

    Boston to Phnom Penh flights have a layover in Hong Kong least often.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Boston to Phnom Penh (average of $991). Flying from Boston to Phnom Penh in June is currently the most expensive (average of $1,570). 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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Complete your trip

Complete your trip to Phnom Penh by adding a car rental and/or hotel reservation to your travel itinerary.
Phnom Penh car rentals
Phnom Penh Pochentong Airport car rentals

Top 4 airlines flying from Boston to Phnom Penh

Discover the top 4 airlines that operate flights from Boston 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$813Average$1,179FlexibilityNo cancel feeOn-time81%
Cathay PacificCheapest$848Average$1,171FlexibilityNo cancel feeOn-time72%
Qatar AirwaysCheapest$1,046Average$1,441FlexibilityNo cancel feeOn-time68%
EmiratesCheapest$1,202Average$1,458FlexibilityNo cancel feeOn-time75%

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