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Phnom Penh

$547+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PNH
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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The best prices from London Heathrow to Phnom Penh Pochentong are usually found in May or March, booked 67 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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$661
(FlightHub)

One-way from

$547
(Expedia)

Popular in

August

Cheapest in

May

Average price

$886
Provider with most accurate pricing for London Heathrow-Phnom Penh Pochentong flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Phnom Penh Pochentong flights.
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From London Heathrow to Phnom Penh Pochentong
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One-way flight from London Heathrow to Phnom Penh Pochentong
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($199 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 22, 2025.

This FlightHub deal was found by Cheapflights users on 2/22. 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.
Sat 3/229:10 pmLHR - PNH
1 stop31h 05mMultiple Airlines
Sun 5/1112:15 pmPNH - LHR
1 stop37h 35mMultiple Airlines
Deal found 2/22$661
This Air China deal was found by Cheapflights users on 2/22. 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 Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/3010:40 pmLHR - PNH
2 stops30h 30mAir China
Sun 5/2512:15 pmPNH - LHR
2 stops35h 30mAir China
Deal found 2/22$679
This China Southern deal was found by Cheapflights users on 2/21. 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.
Sun 3/1610:00 pmLHR - PNH
1 stop33h 35mChina Southern
Tue 5/68:00 amPNH - LHR
2 stops38h 15mChina Southern
Deal found 2/21$703
This Shenzhen Airlines deal was found by Cheapflights users on 2/21. 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.
Fri 3/149:10 pmLHR - PNH
1 stop31h 05mShenzhen Airlines
Sun 5/412:15 pmPNH - LHR
1 stop37h 35mShenzhen Airlines
Deal found 2/21$740
This FlightHub deal was found by Cheapflights users on 2/21. 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.
Sat 3/229:00 pmLHR - PNH
1 stop19h 15mChina Eastern
Sun 5/1112:40 pmPNH - LHR
2 stops60h 00mChina Eastern
Deal found 2/21$775
This Vietnam Airlines deal was found by Cheapflights users on 2/21. 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.
Sun 5/117:50 pmLHR - PNH
2 stops35h 10mVietnam Airlines
Sun 6/15:45 pmPNH - LHR
2 stops29h 20mVietnam Airlines
Deal found 2/21$892
This Singapore Airlines deal was found by Cheapflights users on 2/22. 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.
Wed 4/168:35 pmLHR - PNH
1 stop34h 30mSingapore Airlines
Tue 4/296:55 pmPNH - LHR
1 stop26h 50mSingapore Airlines
Deal found 2/22$903
This oojo deal was found by Cheapflights users on 2/22. 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.
Sat 3/1510:25 amLHR - PNH
1 stop16h 25mMalaysia Airlines
Sun 5/411:10 amPNH - LHR
1 stop35h 25mMalaysia Airlines
Deal found 2/22$909
This Etihad Airways deal was found by Cheapflights users on 2/21. 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.
Sun 3/169:00 amLHR - PNH
2 stops22h 25mEtihad Airways
Mon 5/57:25 pmPNH - LHR
2 stops41h 35mEtihad Airways
Deal found 2/21$948
This Emirates deal was found by Cheapflights users on 2/22. 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.
Sun 3/161:40 pmLHR - PNH
2 stops21h 45mEmirates
Tue 5/68:50 pmPNH - LHR
2 stops23h 35mEmirates
Deal found 2/22$970
This Qatar Airways deal was found by Cheapflights users on 2/21. 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.
Sun 10/53:05 pmLHR - PNH
2 stops19h 10mQatar Airways
Fri 10/105:40 pmPNH - LHR
2 stops18h 45mQatar Airways
Deal found 2/21$992
This British Airways deal was found by Cheapflights users on 2/21. 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.
Wed 3/268:35 amLHR - PNH
2 stops23h 50mBritish Airways
Sat 5/246:20 pmPNH - LHR
1 stop17h 05mBritish Airways
Deal found 2/21$1,012

Find flights from Heathrow to Phnom Penh within your budget

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 February 22, 2025.

Fly from

Heathrow

Fly to

Phnom Penh

Route

Depart

Return

Price

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sat 3/22

9:10 pm-11:15 am

1 stop31h 05m

Phnom Penh Pochentong

Sun 5/11

12:15 pm-7:50 pm

1 stop37h 35m

$661

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 3/30

10:40 pm-11:10 am

2 stops30h 30m

Phnom Penh Pochentong

Sun 5/25

12:15 pm-5:45 pm

2 stops35h 30m

$679

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 3/16

10:00 pm-2:35 pm

1 stop33h 35m

Phnom Penh Pochentong

Tue 5/6

8:00 am-4:15 pm

2 stops38h 15m

$703

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 3/14

9:10 pm-11:15 am

1 stop31h 05m

Phnom Penh Pochentong

Sun 5/4

12:15 pm-7:50 pm

1 stop37h 35m

$740

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sat 3/22

9:00 pm-11:15 pm

1 stop19h 15m

Phnom Penh Pochentong

Sun 5/11

12:40 pm-6:40 pm

2 stops60h 00m

$775

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 5/11

7:50 pm-1:00 pm

2 stops35h 10m

Phnom Penh Pochentong

Sun 6/1

5:45 pm-5:05 pm

2 stops29h 20m

$892

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Wed 4/16

8:35 pm-1:05 pm

1 stop34h 30m

Phnom Penh Pochentong

Tue 4/29

6:55 pm-3:45 pm

1 stop26h 50m

$903

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sat 3/15

10:25 am-9:50 am

1 stop16h 25m

Phnom Penh Pochentong

Sun 5/4

11:10 am-4:35 pm

1 stop35h 25m

$909

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 3/16

9:00 am-2:25 pm

2 stops22h 25m

Phnom Penh Pochentong

Mon 5/5

7:25 pm-7:00 am

2 stops41h 35m

$948

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 3/16

1:40 pm-6:25 pm

2 stops21h 45m

Phnom Penh Pochentong

Tue 5/6

8:50 pm-2:25 pm

2 stops23h 35m

$970

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 20 results
1
2

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 February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
business-class.comPrice Accuracy3 starsTrust Score*3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Phnom Penh flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

Travel insights for flights from Heathrow to Phnom Penh

Get recent, data-driven insights about flights from Heathrow to Phnom Penh including ideal travel times, pricing trends, and more.

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 February 14, 2025.

The best time to book flights from London Heathrow Airport to Phnom Penh is 67 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, October is the cheapest month in which you can book a flight from London Heathrow Airport to Phnom Penh (average of $1,014). 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 February 22, 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 February 22, 2025.
China Airlines
8.2
Very good
726 reviews

Boarding

8.3

Entertainment

8.0

Crew

8.5

Overall

8.2

Comfort

8.0

Food

7.8

Reviews

1 / 20

6.0
Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

China Airlines
8.2
Very good
726 reviews
China Airlines
8.2
Very good
726 reviews

Boarding

8.3

Entertainment

8.0

Crew

8.5

Overall

8.2

Comfort

8.0

Food

7.8

Reviews

1 / 20

6.0
Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

Emirates
8.1
Very good
3,276 reviews
China Airlines
8.2
Very good
726 reviews

Boarding

8.3

Entertainment

8.0

Crew

8.5

Overall

8.2

Comfort

8.0

Food

7.8

Reviews

1 / 20

6.0
Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

Singapore Airlines
8.1
Very good
1,297 reviews
China Airlines
8.2
Very good
726 reviews

Boarding

8.3

Entertainment

8.0

Crew

8.5

Overall

8.2

Comfort

8.0

Food

7.8

Reviews

1 / 20

6.0
Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

China Southern
7.6
Good
87 reviews
China Airlines
8.2
Very good
726 reviews

Boarding

8.3

Entertainment

8.0

Crew

8.5

Overall

8.2

Comfort

8.0

Food

7.8

Reviews

1 / 20

6.0
Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

Vietnam Airlines
7.6
Good
196 reviews
China Airlines
8.2
Very good
726 reviews

Boarding

8.3

Entertainment

8.0

Crew

8.5

Overall

8.2

Comfort

8.0

Food

7.8

Reviews

1 / 20

6.0
Good

Alex,Dec 2024

SYD - TPE

For the money it’s good value. Seat space rather small

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, Air China ($679), China Southern ($703), and Shenzhen Airlines ($740) offers the cheapest pricing from London Heathrow Airport to Phnom Penh. Users have found that Air China is 28% 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?

    $594 is the cheapest one-way deal found within the past few days, from Malaysia Airlines. You may also be able to find cheap deals on Emirates and Shenzhen Airlines, with prices starting from $797 and $919, 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, October is the cheapest month in which you can book a flight from London Heathrow Airport to Phnom Penh (average of $1,014). 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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$571Average$717FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$641Average$1,165FlexibilityNo cancel feeOn-time67%
Singapore AirlinesCheapest$776Average$1,062FlexibilityNo cancel feeOn-time81%
Thai AirwaysCheapest$1,031Average$1,165FlexibilityNo cancel feeOn-time77%
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