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$314+ Cheap flights from Phnom Penh (PNH) to London (LON)

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — LON
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from Phnom Penh Pochentong to London are usually found in August or November, booked 75 days in advance, depart on a Saturday or Thursday and return on a Monday

Cheap flight deals from Phnom Penh to London

Discover tips and strategies to find the most affordable flight options for your journey from Phnom Penh (PNH) to London (LON). 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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$602
(Mytrip)

One-way from

$314
(oojo)

Popular in

July

Cheapest in

August

Average price

$772
Provider with most accurate pricing for Phnom Penh Pochentong-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Phnom Penh Pochentong-London (LON) flights.
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From Phnom Penh Pochentong to London (LON)
Search Deals
One-way flight from Phnom Penh Pochentong to London (LON)
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Phnom Penh to London

Cheapest flights from Phnom Penh to London
Explore the most affordable flight options available from Phnom Penh to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Mytrip deal was found by Cheapflights users on 3/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1112:40 pmPNH - LGW
2 stops32h 30mChina Eastern
Sun 5/1811:35 amLGW - PNH
3 stops42h 00mChina Eastern
Deal found 3/27$602
This FlightHub deal was found by Cheapflights users on 3/27. 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 5/138:00 amPNH - LHR
1 stop17h 00mChina Southern
Thu 6/1910:10 pmLHR - PNH
1 stop34h 20mChina Southern
Deal found 3/27$698
This Mytrip deal was found by Cheapflights users on 3/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1012:10 amPNH - LHR
1 stop24h 30mChina Eastern
Sun 5/189:20 pmLHR - PNH
1 stop19h 55mChina Eastern
Deal found 3/27$739
This Trip.com deal was found by Cheapflights users on 3/27. 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.
Sun 5/1112:15 pmPNH - LHR
1 stop37h 35mMultiple Airlines
Sun 5/189:25 amLHR - PNH
1 stop21h 45mMultiple Airlines
Deal found 3/27$814
This Shenzhen Airlines deal was found by Cheapflights users on 3/27. 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 5/312:15 pmPNH - LHR
1 stop37h 45mShenzhen Airlines
Sun 5/1810:05 pmLHR - PNH
1 stop31h 05mShenzhen Airlines
Deal found 3/27$827
This Expedia deal was found by Cheapflights users on 3/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/106:20 pmPNH - STN
2 stops24h 35mMultiple Airlines
Tue 7/82:55 pmSTN - PNH
2 stops20h 30mMultiple Airlines
Deal found 3/27$975
This Emirates deal was found by Cheapflights users on 3/28. 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.
Fri 8/18:50 pmPNH - LHR
2 stops27h 50mEmirates
Sun 9/78:40 pmLHR - PNH
2 stops37h 55mEmirates
Deal found 3/28$1,007
This oojo deal was found by Cheapflights users on 3/28. 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 8/18:50 pmPNH - STN
2 stops27h 55mEmirates
Sun 9/72:55 pmSTN - PNH
2 stops19h 40mEmirates
Deal found 3/28$1,058
This Finnair deal was found by Cheapflights users on 3/27. 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.
Mon 6/97:25 pmPNH - LHR
2 stops31h 15mFinnair
Tue 7/291:00 pmLHR - PNH
2 stops37h 35mFinnair
Deal found 3/27$1,076
This Emirates deal was found by Cheapflights users on 3/28. 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.
Fri 7/48:50 pmPNH - LGW
2 stops40h 30mEmirates
Sun 7/139:45 pmLGW - PNH
2 stops36h 50mEmirates
Deal found 3/28$1,086
This Trip.com deal was found by Cheapflights users on 3/27. 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.
Mon 6/912:10 amPNH - LGW
1 stop20h 50mMultiple Airlines
Tue 7/86:55 amLGW - PNH
3 stops24h 05mMultiple Airlines
Deal found 3/27$1,124
This oojo deal was found by Cheapflights users on 3/27. 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 5/112:05 pmPNH - LGW
1 stop22h 20mSingapore Airlines
Sun 5/1810:15 amLGW - PNH
1 stop20h 55mSingapore Airlines
Deal found 3/27$1,129

Cheapflights Fare Finder

Customize your flight search to find flights from Phnom Penh to London 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 March 28, 2025.
Use the filters below to find and compare flights from Phnom Penh to London that are best for you.

Fly from

Phnom Penh

Fly to

London

Route

Depart

Return

Price

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Sun 5/11

12:40 pm-3:10 pm

2 stops32h 30m

London Gatwick

Sun 5/18

11:35 am-11:35 am

3 stops42h 00m

$602

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Tue 5/13

8:00 am-7:00 pm

1 stop17h 00m

London Heathrow

Thu 6/19

10:10 pm-2:30 pm

1 stop34h 20m

$698

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sat 5/10

12:10 am-6:40 pm

1 stop24h 30m

London Heathrow

Sun 5/18

9:20 pm-11:15 pm

1 stop19h 55m

$739

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sun 5/11

12:15 pm-7:50 pm

1 stop37h 35m

London Heathrow

Sun 5/18

9:25 am-1:10 pm

1 stop21h 45m

$814

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sat 5/3

12:15 pm-8:00 pm

1 stop37h 45m

London Heathrow

Sun 5/18

10:05 pm-11:10 am

1 stop31h 05m

$827

Phnom PenhLondon

PNH - STN

PNHSTN

Phnom Penh Pochentong

Tue 6/10

6:20 pm-12:55 pm

2 stops24h 35m

London Stansted

Tue 7/8

2:55 pm-5:25 pm

2 stops20h 30m

$975

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Fri 8/1

8:50 pm-6:40 pm

2 stops27h 50m

London Heathrow

Sun 9/7

8:40 pm-4:35 pm

2 stops37h 55m

$1,007

Phnom PenhLondon

PNH - STN

PNHSTN

Phnom Penh Pochentong

Fri 8/1

8:50 pm-6:45 pm

2 stops27h 55m

London Stansted

Sun 9/7

2:55 pm-4:35 pm

2 stops19h 40m

$1,058

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Mon 6/9

7:25 pm-8:40 pm

2 stops31h 15m

London Heathrow

Tue 7/29

1:00 pm-8:35 am

2 stops37h 35m

$1,076

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Fri 7/4

8:50 pm-7:20 am

2 stops40h 30m

London Gatwick

Sun 7/13

9:45 pm-4:35 pm

2 stops36h 50m

$1,086

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 44 results
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Compare providers for flights from Phnom Penh to London

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 London in March.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust 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 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 flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phnom Penh-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Phnom Penh-London 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 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 London

Have a flexible travel schedule? Discover the best time to fly to London 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.

Cheapflights Insights

Everything you need to know about your flight from Phnom Penh to London

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

Use this chart to determine the optimal time to book a round-trip flight from Phnom Penh to London. Price data was last updated on March 21, 2025.

To ensure you get the cheapest price possible for a flight from Phnom Penh to London, you should look to book at least 74 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?

Currently, November is the cheapest month in which you can book a flight from Phnom Penh to London (average of $661). Flying from Phnom Penh to London in June is currently the most expensive (average of $1,115). 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 LON?

Find hourly flight availability from Phnom Penh to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

It’s optimal to fly from Phnom Penh to London in the afternoon. By choosing this option you can save up to 32% on the cost of your flight, compared to a flight at noon.

Rainfall in London by month

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

In terms of precipitation, rainfall in London 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 when rainfall is around 1.6 in.

Temperature in London by month

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

If weather is an important factor for your trip to London, 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 London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated March 28, 2025.
Peruse reviews from past customers who have flown with China Airlines, Asiana Airlines and Singapore Airlines from Phnom Penh to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.2
Very good
722 reviews

Entertainment

8.0

Overall

8.2

Food

7.8

Comfort

8.0

Boarding

8.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
China Airlines
8.2
Very good
722 reviews
China Airlines
8.2
Very good
722 reviews

Entertainment

8.0

Overall

8.2

Food

7.8

Comfort

8.0

Boarding

8.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
Asiana Airlines
8.2
Very good
440 reviews
China Airlines
8.2
Very good
722 reviews

Entertainment

8.0

Overall

8.2

Food

7.8

Comfort

8.0

Boarding

8.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
Singapore Airlines
8.1
Very good
1,285 reviews
China Airlines
8.2
Very good
722 reviews

Entertainment

8.0

Overall

8.2

Food

7.8

Comfort

8.0

Boarding

8.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
Emirates
8.0
Very good
3,190 reviews
China Airlines
8.2
Very good
722 reviews

Entertainment

8.0

Overall

8.2

Food

7.8

Comfort

8.0

Boarding

8.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence
KLM
7.8
Good
1,321 reviews
China Airlines
8.2
Very good
722 reviews

Entertainment

8.0

Overall

8.2

Food

7.8

Comfort

8.0

Boarding

8.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

Related info for your journey

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

    Phnom Penh Pochentong (PNH), located 5.0 mi from the city center, is the airport you fly out of when you book flights from Phnom Penh to London. 8 airlines have flights from Pochentong to London on a regular basis. Booking flights from Phnom Penh Pochentong to London should not be difficult; the airport handles an average of 0 outbound flights to London per day.

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

    According to our current data, China Eastern ($602), China Southern ($698), and Shenzhen Airlines ($827) offers the cheapest pricing from Phnom Penh to London. These flights start at 36% lower than the current average price 3 months from now.

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

    For one-way options, check prices for Shenzhen Airlines. According to our data, you can fly for as low as $314. Users have also found prices from $335 and $389 on China Eastern and Malaysia Airlines, respectively.

  • What are the most popular routes from Phnom Penh to London?

    When deciding which route to take from Phnom Penh to London consider Phnom Penh Pochentong - London Heathrow, Phnom Penh Pochentong - London Gatwick or Phnom Penh Pochentong - London City as they are the most popular.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Phnom Penh to London (average of $661). Flying from Phnom Penh to London in June is currently the most expensive (average of $1,115). 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?

Book flights to Phnom Penh if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Luton
Wembley
Harrow
Horley
Canterbury
Gatwick
Dover
Orpington
Watford
Milton Keynes
Croydon
Borehamwood
Bromley
Folkestone
Ilford
Aylesbury
Sutton

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Alternative routes for Phnom Penh to London

See prices for flight routes from nearby airports that may be better suited for you.
Phnom Penh to Heathrow flights

Top 8 airlines flying from Phnom Penh to London

Discover the top 8 airlines that operate flights from Phnom Penh to London. 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest$633Average$841FlexibilityNo cancel feeOn-time62%
China SouthernCheapest$663Average$766FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$706Average$858FlexibilityNo cancel feeOn-time67%
Singapore AirlinesCheapest$921Average$1,180FlexibilityNo cancel feeOn-time81%
EmiratesCheapest$929Average$1,030FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$958Average$1,591FlexibilityNo cancel feeOn-time70%
Qatar AirwaysCheapest$993Average$1,562FlexibilityNo cancel feeOn-time68%
Thai AirwaysCheapest$1,032Average$1,278FlexibilityNo cancel feeOn-time77%
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