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$258+ Cheap flights from Phnom Penh (PNH) to Heathrow (LHR)

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 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — LHR
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from Phnom Penh Pochentong to London Heathrow are usually found in May or March, booked 70 days in advance, depart on a Sunday or Saturday and return on a Friday

Cheap flight deals from Phnom Penh to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Phnom Penh (PNH) to Heathrow (LHR). 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 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$695
(oojo)

One-way from

$258
(Mytrip)

Popular in

July

Cheapest in

May

Average price

$1,295
Provider with most accurate pricing for Phnom Penh Pochentong-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Phnom Penh Pochentong-London Heathrow flights.
Search Deals
From Phnom Penh Pochentong to London Heathrow
Search Deals
One-way flight from Phnom Penh Pochentong to London Heathrow
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Phnom Penh to Heathrow

Cheapest flights from Phnom Penh to Heathrow
Explore the most affordable flight options available from Phnom Penh to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This oojo deal was found by Cheapflights users on 2/20. 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 3/812:25 amPNH - LHR
1 stop24h 25mMultiple Airlines
Sun 3/239:10 pmLHR - PNH
1 stop31h 05mMultiple Airlines
Deal found 2/20$695
This Gotogate deal was found by Cheapflights users on 2/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/911:05 amPNH - LHR
3 stops33h 50mChina Eastern
Sun 3/239:00 pmLHR - PNH
1 stop19h 15mChina Eastern
Deal found 2/20$702
This oojo deal was found by Cheapflights users on 2/20. 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 5/3112:20 amPNH - LHR
1 stop23h 25mAir China
Thu 6/198:25 pmLHR - PNH
1 stop20h 40mAir China
Deal found 2/20$709
This China Southern deal was found by Cheapflights users on 2/20. 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 6/13:35 pmPNH - LHR
2 stops32h 30mChina Southern
Thu 6/1910:10 pmLHR - PNH
1 stop20h 00mChina Southern
Deal found 2/20$746
This oojo deal was found by Cheapflights users on 2/20. 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.
Sun 6/15:40 pmPNH - LHR
2 stops26h 25mQatar Airways
Thu 6/199:00 amLHR - PNH
2 stops25h 15mQatar Airways
Deal found 2/20$948
This British Airways deal was found by Cheapflights users on 2/20. 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.
Tue 6/35:40 pmPNH - LHR
2 stops26h 30mBritish Airways
Sat 6/74:00 pmLHR - PNH
2 stops18h 15mBritish Airways
Deal found 2/20$983
This oojo deal was found by Cheapflights users on 2/20. 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.
Fri 8/112:15 pmPNH - LHR
1 stop37h 35mShenzhen Airlines
Sun 9/710:05 pmLHR - PNH
1 stop31h 05mShenzhen Airlines
Deal found 2/20$1,018
This Emirates deal was found by Cheapflights users on 2/20. 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.
Wed 6/188:50 pmPNH - LHR
2 stops23h 35mEmirates
Sun 7/68:40 pmLHR - PNH
2 stops37h 55mEmirates
Deal found 2/20$1,028
This Finnair deal was found by Cheapflights users on 2/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/47:25 pmPNH - LHR
2 stops43h 45mFinnair
Sun 5/1810:20 amLHR - PNH
2 stops40h 15mFinnair
Deal found 2/20$1,032
This Cathay Pacific deal was found by Cheapflights users on 2/20. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/136:30 pmPNH - LHR
1 stop17h 50mCathay Pacific
Wed 8/205:00 pmLHR - PNH
1 stop18h 20mCathay Pacific
Deal found 2/20$1,148
This Vietnam Airlines deal was found by Cheapflights users on 2/20. 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.
Wed 8/132:10 pmPNH - LHR
1 stop32h 45mVietnam Airlines
Wed 8/206:55 pmLHR - PNH
2 stops36h 05mVietnam Airlines
Deal found 2/20$1,315
This oojo deal was found by Cheapflights users on 2/19. 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 3/56:30 pmPNH - LHR
1 stop18h 05mMalaysia Airlines
Tue 5/611:00 amLHR - PNH
1 stop24h 25mMalaysia Airlines
Deal found 2/19$3,306

Find flights from Phnom Penh to Heathrow within your budget

Customize your flight search to find flights from Phnom Penh to Heathrow 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 20, 2025.

Fly from

Phnom Penh

Fly to

Heathrow

Route

Depart

Return

Price

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sat 3/8

12:25 am-5:50 pm

1 stop24h 25m

London Heathrow

Sun 3/23

9:10 pm-11:15 am

1 stop31h 05m

$695

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sun 3/9

11:05 am-1:55 pm

3 stops33h 50m

London Heathrow

Sun 3/23

9:00 pm-11:15 pm

1 stop19h 15m

$702

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sat 5/31

12:20 am-5:45 pm

1 stop23h 25m

London Heathrow

Thu 6/19

8:25 pm-11:05 pm

1 stop20h 40m

$709

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sun 6/1

3:35 pm-6:05 pm

2 stops32h 30m

London Heathrow

Thu 6/19

10:10 pm-12:10 am

1 stop20h 00m

$746

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sun 6/1

5:40 pm-2:05 pm

2 stops26h 25m

London Heathrow

Thu 6/19

9:00 am-4:15 pm

2 stops25h 15m

$948

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Tue 6/3

5:40 pm-2:10 pm

2 stops26h 30m

London Heathrow

Sat 6/7

4:00 pm-4:15 pm

2 stops18h 15m

$983

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Fri 8/1

12:15 pm-7:50 pm

1 stop37h 35m

London Heathrow

Sun 9/7

10:05 pm-11:10 am

1 stop31h 05m

$1,018

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Wed 6/18

8:50 pm-2:25 pm

2 stops23h 35m

London Heathrow

Sun 7/6

8:40 pm-4:35 pm

2 stops37h 55m

$1,028

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sun 5/4

7:25 pm-9:10 am

2 stops43h 45m

London Heathrow

Sun 5/18

10:20 am-8:35 am

2 stops40h 15m

$1,032

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Wed 8/13

6:30 pm-6:20 am

1 stop17h 50m

London Heathrow

Wed 8/20

5:00 pm-5:20 pm

1 stop18h 20m

$1,148

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 23 results
1
2
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Compare providers for flights from Phnom Penh to Heathrow

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 Phnom Penh to Heathrow in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
JetabroadPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice 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 Phnom Penh-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Phnom Penh-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phnom Penh-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Phnom Penh-London Heathrow Airport 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 Phnom Penh-London Heathrow Airport 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 Phnom Penh to Heathrow

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Phnom Penh to Heathrow. Price data was last updated on February 14, 2025.

To ensure you get the cheapest price possible for a flight from Phnom Penh to London Heathrow Airport, you should look to book at least 69 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, November is the cheapest month in which you can book a flight from Phnom Penh to London Heathrow Airport (average of $661). Flying from Phnom Penh to London Heathrow Airport in June is currently the most expensive (average of $1,136). 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 PNH to LHR?

Find hourly flight availability from Phnom Penh to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

It’s typically best to fly out from Phnom Penh to London Heathrow Airport in the morning. Doing so could potentially save you 27% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated February 20, 2025.
Emirates
8.1
Very good
3,276 reviews

Crew

8.3

Overall

8.1

Boarding

8.1

Entertainment

8.2

Food

7.9

Comfort

8.0

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Emirates
8.1
Very good
3,276 reviews
Emirates
8.1
Very good
3,276 reviews

Crew

8.3

Overall

8.1

Boarding

8.1

Entertainment

8.2

Food

7.9

Comfort

8.0

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

KLM
7.8
Good
1,333 reviews
Emirates
8.1
Very good
3,276 reviews

Crew

8.3

Overall

8.1

Boarding

8.1

Entertainment

8.2

Food

7.9

Comfort

8.0

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Vietnam Airlines
7.7
Good
197 reviews
Emirates
8.1
Very good
3,276 reviews

Crew

8.3

Overall

8.1

Boarding

8.1

Entertainment

8.2

Food

7.9

Comfort

8.0

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

China Southern
7.6
Good
87 reviews
Emirates
8.1
Very good
3,276 reviews

Crew

8.3

Overall

8.1

Boarding

8.1

Entertainment

8.2

Food

7.9

Comfort

8.0

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Finnair
7.6
Good
1,274 reviews
Emirates
8.1
Very good
3,276 reviews

Crew

8.3

Overall

8.1

Boarding

8.1

Entertainment

8.2

Food

7.9

Comfort

8.0

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Related info for your journey

Find useful and relevant information for your journey from Phnom Penh to Heathrow. 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 from for flights from Phnom Penh to London Heathrow?

    Most people fly from Phnom Penh Pochentong (PNH) if they book a flight from Phnom Penh to London Heathrow. On average, Pochentong has 0 outbound flights to London Heathrow per day from 8 airlines. Phnom Penh Pochentong is conveniently located just 5.0 mi from Phnom Penh’s city center.

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

    Cheapflights users have booked flights from Phnom Penh to London Heathrow Airport round-trip from $702. Other airlines that can offer you cheap pricing are Air China, from $709, and China Southern, from $746. These flights start at 33% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is China Eastern, with whom users have recently found tickets for as low as $258. However, be on the lookout for offers from China Southern and Shenzhen Airlines, as they are both options that can get you from Phnom Penh to London Heathrow Airport for a low price.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Phnom Penh to London Heathrow Airport (average of $661). Flying from Phnom Penh to London Heathrow Airport in June is currently the most expensive (average of $1,136). 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

Traveling to a place near Phnom Penh?

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Top 8 airlines flying from Phnom Penh to Heathrow

Discover the top 8 airlines that operate flights from Phnom Penh to Heathrow. 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 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$632Average$765FlexibilityNo cancel feeOn-time69%
China EasternCheapest$703Average$843FlexibilityNo cancel feeOn-time62%
Air ChinaCheapest$736Average$875FlexibilityNo cancel feeOn-time67%
Singapore AirlinesCheapest$921Average$1,180FlexibilityNo cancel feeOn-time81%
EmiratesCheapest$929Average$1,021FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$958Average$1,591FlexibilityNo cancel feeOn-time70%
Qatar AirwaysCheapest$993Average$1,562FlexibilityNo cancel feeOn-time68%
Thai AirwaysCheapest$1,103Average$1,292FlexibilityNo cancel feeOn-time77%
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