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Cheap flights from Phnom Penh to London from £261

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — LON
4 May — 11 May1
1 adult

Cheapflights Tip: The best prices from Phnom Penh Pochentong to London are usually found in August or November, booked 44 days in advance, depart on a Sunday or Friday 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 29 April 2025.

Round-trip from

£459

One-way from

£261

Popular in

April

Cheapest in

August

Average price

£980
21/5-26/5
  • 21/5-26/5
  • 6 total stops
  • 62h 35m total
  • Phnom Penh to London
China Eastern
  • China Eastern
  • 11/5
  • 2 total stops
  • 32h 30m total
  • Phnom Penh to London
High demand for flights, 0% potential price rise
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Average for round-trip flights in April 2025

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 29 April 2025.

Thu 12/612:40PNH - LGW
3 stops24h 00mChina Eastern
Thu 19/611:35LGW - PNH
2 stops42h 00mChina Eastern
Deal found 28/4£441
Wed 21/500:10PNH - STN
3 stops29h 45mMultiple Airlines
Mon 26/506:00STN - PNH
3 stops32h 50mMultiple Airlines
Deal found 29/4£459
Sat 24/512:40PNH - LHR
2 stops36h 00mChina Eastern
Wed 4/621:20LHR - PNH
2 stops32h 15mChina Eastern
Deal found 28/4£464
Thu 12/615:35PNH - LHR
1 stop33h 25mChina Southern
Thu 19/621:00LHR - PNH
2 stops31h 40mChina Southern
Deal found 28/4£489
Sat 24/512:15PNH - LHR
1 stop37h 45mShenzhen Airlines
Wed 4/622:05LHR - PNH
1 stop31h 05mShenzhen Airlines
Deal found 28/4£524
Sun 8/600:20PNH - LHR
1 stop26h 10mMultiple Airlines
Mon 16/622:05LHR - PNH
1 stop31h 05mMultiple Airlines
Deal found 28/4£538
Wed 21/500:10PNH - LGW
3 stops27h 45mMultiple Airlines
Mon 26/511:15LGW - PNH
2 stops27h 35mMultiple Airlines
Deal found 29/4£599
Sat 4/1008:30PNH - LHR
1 stop28h 30mEtihad Airways
Mon 8/1209:00LHR - PNH
1 stop14h 30mEtihad Airways
Deal found 28/4£675
Thu 22/517:40PNH - LGW
2 stops19h 00mBritish Airways
Mon 26/514:55LGW - PNH
1 stop19h 20mBritish Airways
Deal found 29/4£694
Thu 12/620:50PNH - STN
2 stops27h 55mEmirates
Thu 19/614:55STN - PNH
2 stops19h 40mEmirates
Deal found 28/4£714
Sun 5/1018:20PNH - LHR
1 stop17h 35mMalaysia Airlines
Sun 7/1210:25LHR - PNH
1 stop16h 25mMalaysia Airlines
Deal found 28/4£717
Fri 1/820:50PNH - LHR
2 stops25h 20mEmirates
Sun 7/920:40LHR - PNH
2 stops37h 55mEmirates
Deal found 29/4£755

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 29 April 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 - STN

PNHSTN

Phnom Penh Pochentong

Wed 21/5

00:10-23:55

3 stops29h 45m

London Stansted

Mon 26/5

06:00-20:50

3 stops32h 50m

£459

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Mon 9/6

12:40-06:40

3 stops24h 00m

London Gatwick

Mon 16/6

11:35-17:50

2 stops24h 15m

£461

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 22/5

12:40-18:40

2 stops36h 00m

London Heathrow

Mon 26/5

21:20-11:35

3 stops32h 15m

£483

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Mon 9/6

12:05-19:00

1 stop36h 55m

London Heathrow

Mon 16/6

22:10-10:40

1 stop30h 30m

£500

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sat 21/6

12:15-20:00

1 stop37h 45m

London Heathrow

Sun 6/7

22:05-11:10

1 stop31h 05m

£526

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sun 8/6

00:20-20:30

1 stop26h 10m

London Heathrow

Mon 16/6

22:05-11:10

1 stop31h 05m

£538

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sun 8/6

00:20-20:30

1 stop26h 10m

London Heathrow

Mon 16/6

20:25-11:10

2 stops32h 45m

£562

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Sat 14/6

12:15-06:55

2 stops24h 40m

London Gatwick

Thu 10/7

20:45-11:10

2 stops32h 25m

£580

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Wed 21/5

00:10-21:55

3 stops27h 45m

London Gatwick

Mon 26/5

11:15-20:50

2 stops27h 35m

£599

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Mon 9/6

17:40-13:25

1 stop25h 45m

London Gatwick

Mon 16/6

14:55-16:15

1 stop19h 20m

£670

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 41 results
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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 return 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 return flight from Phnom Penh to London. Price data was last updated on 25 April 2025.

Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Phnom Penh to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Phnom Penh to London (average of £112). Flying from Phnom Penh to London in August is currently the most expensive (average of £164). 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.

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 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 29 April 2025.
See what other customers who have flown with Singapore Airlines, Emirates and KLM from Phnom Penh to London have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Food

7.7

Crew

8.6

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Boarding

8.2

Food

7.7

Crew

8.6

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Boarding

8.2

Food

7.7

Crew

8.6

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Boarding

8.2

Food

7.7

Crew

8.6

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Boarding

8.2

Food

7.7

Crew

8.6

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Boarding

8.2

Food

7.7

Crew

8.6

Comfort

7.9

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

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) is the airport you will fly out of if you book a flight from Phnom Penh to London. You should not have trouble finding flights to London from Pochentong; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Phnom Penh airport to London. It is only a 5.0 mi journey to Pochentong (PNH) from Phnom Penh’s city center.

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

    China Eastern, at £461, was found to be the cheapest airline from Phnom Penh to London.Alternate airlines flying return to your destination include China Southern and Shenzhen Airlines. China Eastern is currently priced 35% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is China Eastern, with whom users have recently found tickets for as low as £261. However, be on the lookout for offers from XiamenAir and Malaysia Airlines, as they are both options that can get you from Phnom Penh to London for a low price.

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

  • 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 holiday 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, January is the cheapest month in which you can book a flight from Phnom Penh to London (average of £112). Flying from Phnom Penh to London in August is currently the most expensive (average of £164). 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

Travelling to a place near Phnom Penh?

Book flights to Phnom Penh if you plan to visit one of these locations
Deal
Hounslow
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Ilford
Hayes
Southend-on-Sea
Crawley
Wembley
Ipswich
Maidstone
Winchester
Folkestone
Dartford
Watford
Chichester

Browse thousands of different options on Cheapflights for your next trip

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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.

Top airline flying from Phnom Penh to London

Discover the top airline 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 858,174 searches. Data last updated 29 April 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£483Average£578FlexibilityNo cancel feeOn-time69%
Search China Southern flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Phnom Penh to London?

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Why should you use Cheapflights to find cheap flight tickets from Phnom Penh to London?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from Phnom Penh.

Can Cheapflights find flights from Phnom Penh to London with no change fees?

Yes, we can. To see specific flights from Phnom Penh to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Phnom Penh to London become cheaper?

Yes, Cheapflights offers price alerts on Phnom Penh to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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