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Phnom Penh

$384+ Cheap flights from Heathrow (LHR) 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PNH
avr. 22 — avr. 291
mar. 4/22
mar. 4/29
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Phnom Penh Pochentong are usually found in March or November, booked 84 days in advance, depart on a Friday or Thursday and return on a Sunday

Cheap flight deals from Heathrow to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 avril 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Flightnetwork
3 stars

Round-trip from

$696
(Shenzhen Airlines)

One-way from

$384
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$1,105
Provider with most accurate pricing for London Heathrow-Phnom Penh Pochentong flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Heathrow-Phnom Penh Pochentong flights.
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From London Heathrow to Phnom Penh Pochentong
Search Deals
One-way flight from London Heathrow to Phnom Penh Pochentong
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($170 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Heathrow to Phnom Penh

Cheapest flights from Heathrow to Phnom Penh
Explore the most affordable flight options available from Heathrow to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on avril 17, 2025.

This Shenzhen Airlines deal was found by Cheapflights users on 4/17. 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 Shenzhen Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 5/210:05 pmLHR - PNH
1 stop31h 05mShenzhen Airlines
jeu. 5/1512:15 pmPNH - LHR
1 stop37h 45mShenzhen Airlines
Deal found 4/17$696
This China Southern deal was found by Cheapflights users on 4/17. 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 China Southern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 6/710:10 pmLHR - PNH
1 stop20h 00mChina Southern
dim. 6/223:35 pmPNH - LHR
2 stops32h 30mChina Southern
Deal found 4/17$770
This oojo deal was found by Cheapflights users on 4/17. 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.
dim. 5/1110:05 pmLHR - PNH
1 stop31h 05mMultiple Airlines
sam. 5/3112:20 amPNH - LHR
1 stop23h 25mMultiple Airlines
Deal found 4/17$816
This Vietnam Airlines deal was found by Cheapflights users on 4/17. 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 Vietnam Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 5/117:50 pmLHR - PNH
2 stops35h 10mVietnam Airlines
dim. 6/15:45 pmPNH - LHR
2 stops29h 20mVietnam Airlines
Deal found 4/17$935
This Singapore Airlines deal was found by Cheapflights users on 4/17. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/308:35 pmLHR - PNH
1 stop30h 05mSingapore Airlines
dim. 5/112:05 pmPNH - LHR
1 stop31h 40mSingapore Airlines
Deal found 4/17$968
This Malaysia Airlines deal was found by Cheapflights users on 4/17. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/149:35 pmLHR - PNH
1 stop30h 25mMalaysia Airlines
mer. 11/196:30 pmPNH - LHR
1 stop27h 55mMalaysia Airlines
Deal found 4/17$971
This Qatar Airways deal was found by Cheapflights users on 4/17. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/104:00 pmLHR - PNH
2 stops18h 15mQatar Airways
mar. 7/15:40 pmPNH - LHR
2 stops26h 25mQatar Airways
Deal found 4/17$975
This CheapOair deal was found by Cheapflights users on 4/17. 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.
sam. 6/79:20 pmLHR - PNH
2 stops32h 15mChina Eastern
sam. 6/2112:10 amPNH - LHR
1 stop24h 30mChina Eastern
Deal found 4/17$1,013
This Etihad Airways deal was found by Cheapflights users on 4/17. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/148:55 pmLHR - PNH
1 stop28h 00mEtihad Airways
jeu. 11/207:25 pmPNH - LHR
2 stops42h 20mEtihad Airways
Deal found 4/17$1,026
This Emirates deal was found by Cheapflights users on 4/17. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/144:50 pmLHR - PNH
2 stops41h 45mEmirates
mer. 11/198:35 pmPNH - LHR
2 stops24h 15mEmirates
Deal found 4/17$1,029
This China Airlines deal was found by Cheapflights users on 4/17. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/299:15 pmLHR - PNH
1 stop30h 20mChina Airlines
jeu. 1/15:20 pmPNH - LHR
1 stop30h 45mChina Airlines
Deal found 4/17$1,381
This British Airways deal was found by Cheapflights users on 4/17. 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.
ven. 4/184:00 pmLHR - PNH
2 stops18h 15mBritish Airways
lun. 5/56:20 pmPNH - LHR
1 stop17h 05mBritish Airways
Deal found 4/17$1,443

Cheapflights Fare Finder

Customize your flight search to find flights from Heathrow 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 avril 17, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Phnom Penh that are best for you.

Fly from

Heathrow

Fly to

Phnom Penh

Route

Depart

Return

Price

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

ven. 5/2

10:05 pm-11:10 am

1 stop31h 05m

Phnom Penh Pochentong

jeu. 5/15

12:15 pm-8:00 pm

1 stop37h 45m

$696

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

sam. 6/7

10:10 pm-12:10 am

1 stop20h 00m

Phnom Penh Pochentong

dim. 6/22

3:35 pm-6:05 pm

2 stops32h 30m

$770

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

dim. 5/11

10:05 pm-11:10 am

1 stop31h 05m

Phnom Penh Pochentong

sam. 5/31

12:20 am-5:45 pm

1 stop23h 25m

$816

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

dim. 5/11

7:50 pm-1:00 pm

2 stops35h 10m

Phnom Penh Pochentong

dim. 6/1

5:45 pm-5:05 pm

2 stops29h 20m

$935

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

mer. 4/30

8:35 pm-8:40 am

1 stop30h 05m

Phnom Penh Pochentong

dim. 5/11

2:05 pm-3:45 pm

1 stop31h 40m

$968

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

mar. 10/14

9:35 pm-5:25 pm

1 stop37h 50m

Phnom Penh Pochentong

sam. 11/15

6:30 pm-3:25 pm

1 stop27h 55m

$971

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

mar. 6/10

4:00 pm-4:15 pm

2 stops18h 15m

Phnom Penh Pochentong

mar. 7/1

5:40 pm-2:05 pm

2 stops26h 25m

$975

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

sam. 6/7

9:20 pm-11:35 am

2 stops32h 15m

Phnom Penh Pochentong

sam. 6/21

12:10 am-6:40 pm

1 stop24h 30m

$1,013

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

mar. 10/14

8:55 pm-6:55 am

1 stop28h 00m

Phnom Penh Pochentong

jeu. 11/20

7:25 pm-6:45 am

2 stops42h 20m

$1,026

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

mar. 10/14

7:50 pm-4:35 pm

2 stops38h 45m

Phnom Penh Pochentong

lun. 11/17

8:35 pm-11:40 am

2 stops22h 05m

$1,029

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 22 results
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Compare providers for flights from Heathrow to Phnom Penh

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Phnom Penh in April.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy2 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*2 stars
GotogatePrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-Phnom Penh flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-Phnom Penh flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Phnom Penh flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Phnom Penh flights, Cheapflights users trust Flightnetwork the most. Flightnetwork has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Phnom Penh flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from Heathrow 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 London Heathrow Airport to Phnom Penh

How far ahead should I book a flight from London Heathrow Airport to Phnom Penh?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Phnom Penh. Price data was last updated on April 11, 2025.

The best time to book flights from London Heathrow Airport to Phnom Penh is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London Heathrow Airport to Phnom Penh?

Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Phnom Penh (average of $994). Flying from London Heathrow Airport 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 LHR to PNH?

Find hourly flight availability from Heathrow 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 avril 17, 2025.

When flying from London Heathrow Airport to Phnom Penh, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 31% versus a flight at noon.

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 avril 17, 2025.
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Singapore Airlines
8.1
Very good
1,288 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Emirates
8.0
Very good
3,200 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Thai Airways
7.7
Good
323 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Vietnam Airlines
7.6
Good
194 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
China Southern
7.5
Good
94 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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 London Heathrow?

    If you book a flight to Phnom Penh from London Heathrow, you will be flying to Pochentong, which is the city’s only airport. Phnom Penh Pochentong (PNH) is located 5.0 mi from the center of Phnom Penh. There are 0 flights from London Heathrow to Pochentong per day from 4 different airlines.

  • What are the cheapest airlines flying from London Heathrow Airport to Phnom Penh round-trip?

    According to our current data, Shenzhen Airlines ($696), China Southern ($770), and Vietnam Airlines ($935) offers the cheapest pricing from London Heathrow Airport to Phnom Penh. Users have found that Shenzhen Airlines is 27% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Phnom Penh one-way?

    $426 is the cheapest one-way deal found within the past few days, from Shenzhen Airlines. You may also be able to find cheap deals on Air China and Singapore Airlines, with prices starting from $467 and $510, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 London Heathrow Airport to Phnom Penh?

    Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Phnom Penh (average of $994). Flying from London Heathrow Airport 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

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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 Heathrow to Phnom Penh

Discover the top 4 airlines that operate flights from Heathrow 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 avril 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$571Average$719FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$641Average$1,165FlexibilityNo cancel feeOn-time67%
Singapore AirlinesCheapest$776Average$1,053FlexibilityNo cancel feeOn-time81%
Thai AirwaysCheapest$1,031Average$1,165FlexibilityNo cancel feeOn-time77%

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