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$455+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — LHR
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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The best prices from Phnom Penh Pochentong to London Heathrow are usually found in March or May, 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 December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$867
(SmartFares)

One-way from

$455
(Malaysia Airlines)

Popular in

July

Cheapest in

March

Average price

$850
Provider with most accurate pricing for Phnom Penh Pochentong-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Phnom Penh Pochentong-London Heathrow flights.
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From Phnom Penh Pochentong to London Heathrow
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One-way flight from Phnom Penh Pochentong to London Heathrow
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High demand for flights, 11% potential price rise
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Best time to find cheap flights, 3% potential price drop
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Average for round-trip flights in December 2024
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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 December 18, 2024.

This Cathay Pacific deal was found by Cheapflights users on 12/18. 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.
Sun 12/227:05 pmPNH - LHR
1 stop18h 55mCathay Pacific
Sun 1/1211:00 amLHR - PNH
1 stop16h 25mCathay Pacific
Deal found 12/18$916
This Emirates deal was found by Cheapflights users on 12/18. 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.
Mon 12/239:30 pmPNH - LHR
2 stops40h 40mEmirates
Mon 1/138:20 pmLHR - PNH
2 stops39h 05mEmirates
Deal found 12/18$988
This Shenzhen Airlines deal was found by Cheapflights users on 12/18. 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.
Sat 12/2112:15 pmPNH - LHR
1 stop37h 55mShenzhen Airlines
Mon 1/69:10 pmLHR - PNH
1 stop38h 40mShenzhen Airlines
Deal found 12/18$1,046
This Lufthansa deal was found by Cheapflights users on 12/18. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/227:25 pmPNH - LHR
2 stops19h 55mMultiple Airlines
Mon 1/135:50 pmLHR - PNH
2 stops18h 45mMultiple Airlines
Deal found 12/18$1,205
This Qatar Airways deal was found by Cheapflights users on 12/18. 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 12/225:10 pmPNH - LHR
2 stops21h 10mQatar Airways
Tue 1/142:55 pmLHR - PNH
2 stops17h 30mQatar Airways
Deal found 12/18$1,237
This Finnair deal was found by Cheapflights users on 12/17. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/177:25 pmPNH - LHR
2 stops32h 15mFinnair
Tue 1/76:10 pmLHR - PNH
2 stops32h 55mFinnair
Deal found 12/17$1,359
This British Airways deal was found by Cheapflights users on 12/18. 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.
Fri 12/205:10 pmPNH - LHR
2 stops20h 15mBritish Airways
Tue 1/142:55 pmLHR - PNH
2 stops17h 30mBritish Airways
Deal found 12/18$1,398
This Vietnam Airlines deal was found by Cheapflights users on 12/18. 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 12/221:50 pmPNH - LHR
1 stop24h 25mVietnam Airlines
Sun 1/1211:00 amLHR - PNH
2 stops19h 00mVietnam Airlines
Deal found 12/18$1,550
This Korean Air deal was found by Cheapflights users on 12/17. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1711:45 pmPNH - LHR
1 stop23h 45mKorean Air
Tue 1/76:50 pmLHR - PNH
1 stop20h 35mKorean Air
Deal found 12/17$1,821
This Singapore Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/176:45 pmPNH - LHR
1 stop31h 25mSingapore Airlines
Tue 1/79:10 amLHR - PNH
1 stop25h 25mSingapore Airlines
Deal found 12/17$1,891

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Wed 1/15

12:15 am-1:55 pm

1 stop20h 40m

London Heathrow

Thu 1/23

5:50 pm-12:25 am

1 stop23h 35m

$867

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sat 2/1

9:30 pm-6:20 pm

2 stops27h 50m

London Heathrow

Sat 2/8

3:50 pm-6:25 pm

2 stops19h 35m

$973

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Fri 1/17

9:30 pm-6:45 am

2 stops40h 15m

London Heathrow

Fri 1/24

9:10 pm-11:15 am

1 stop31h 05m

$1,010

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 1/16

8:55 pm-6:40 am

1 stop16h 45m

London Heathrow

Sat 1/25

9:35 pm-7:35 pm

1 stop15h 00m

$1,205

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Wed 5/7

6:20 pm-5:25 am

1 stop17h 05m

London Heathrow

Fri 9/26

4:00 pm-4:00 pm

2 stops18h 00m

$1,212

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 1/16

3:50 pm-5:00 pm

2 stops56h 10m

London Heathrow

Sat 1/25

10:00 pm-11:30 pm

1 stop18h 30m

$1,320

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 1/16

5:10 pm-6:35 am

2 stops20h 25m

London Heathrow

Thu 1/23

11:35 am-3:25 pm

3 stops20h 50m

$1,431

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sun 1/19

12:15 pm-7:10 pm

1 stop37h 55m

London Heathrow

Sun 1/26

9:10 pm-11:15 am

1 stop31h 05m

$3,279

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Mon 1/27

6:30 pm-3:25 pm

1 stop27h 55m

$455

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Tue 1/21

9:30 pm-8:00 pm

2 stops29h 30m

$516

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 16 results
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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 December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JetabroadPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
MytripPrice 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 December 13, 2024.

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 $1,088). 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 December 18, 2024.

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 December 18, 2024.
Emirates
8.1
Very good
3,412 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.9

Boarding

8.1

Reviews

1 / 10

The seats were very uncomfortable. I along with maybe 4 other passengers were never given our breakfast meal. The attendant completely forgot about us. For such a long flight the seats should be made with more comfort in mind. Just because it is economy doesn’t mean we don’t deserve comfort.

Emirates
8.1
Very good
3,412 reviews
Emirates
8.1
Very good
3,412 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.9

Boarding

8.1

Reviews

1 / 10

The seats were very uncomfortable. I along with maybe 4 other passengers were never given our breakfast meal. The attendant completely forgot about us. For such a long flight the seats should be made with more comfort in mind. Just because it is economy doesn’t mean we don’t deserve comfort.

Thai Airways
7.8
Good
356 reviews
Emirates
8.1
Very good
3,412 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.9

Boarding

8.1

Reviews

1 / 10

The seats were very uncomfortable. I along with maybe 4 other passengers were never given our breakfast meal. The attendant completely forgot about us. For such a long flight the seats should be made with more comfort in mind. Just because it is economy doesn’t mean we don’t deserve comfort.

Qatar Airways
7.5
Good
3,798 reviews
Emirates
8.1
Very good
3,412 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.9

Boarding

8.1

Reviews

1 / 10

The seats were very uncomfortable. I along with maybe 4 other passengers were never given our breakfast meal. The attendant completely forgot about us. For such a long flight the seats should be made with more comfort in mind. Just because it is economy doesn’t mean we don’t deserve comfort.

China Southern
7.3
Good
96 reviews
Emirates
8.1
Very good
3,412 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.9

Boarding

8.1

Reviews

1 / 10

The seats were very uncomfortable. I along with maybe 4 other passengers were never given our breakfast meal. The attendant completely forgot about us. For such a long flight the seats should be made with more comfort in mind. Just because it is economy doesn’t mean we don’t deserve comfort.

Malaysia Airlines
7.3
Good
292 reviews
Emirates
8.1
Very good
3,412 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Entertainment

8.2

Food

7.9

Boarding

8.1

Reviews

1 / 10

The seats were very uncomfortable. I along with maybe 4 other passengers were never given our breakfast meal. The attendant completely forgot about us. For such a long flight the seats should be made with more comfort in mind. Just because it is economy doesn’t mean we don’t deserve comfort.

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 $867. Other airlines that can offer you cheap pricing are Emirates, from $973, and Thai Airways, from $1,205. These flights start at 15% 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 Malaysia Airlines, with whom users have recently found tickets for as low as $455. However, be on the lookout for offers from Emirates and Thai Airways, 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 $1,088). 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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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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest$632Average$772FlexibilityNo cancel feeOn-time69%
China EasternCheapest$703Average$812FlexibilityNo cancel feeOn-time62%
Air ChinaCheapest$744Average$810FlexibilityNo cancel feeOn-time67%
Singapore AirlinesCheapest$921Average$1,109FlexibilityNo cancel feeOn-time81%
EmiratesCheapest$931Average$1,030FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$958Average$1,591FlexibilityNo cancel feeOn-time70%
Qatar AirwaysCheapest$993Average$1,562FlexibilityNo cancel feeOn-time68%
Thai AirwaysCheapest$1,145Average$1,302FlexibilityNo cancel feeOn-time77%
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