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Cheap flights from London to Phnom Penh from £319

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 30/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PNH
27 Feb — 6 Mar1
1 adult

The best prices from London to Phnom Penh Pochentong are usually found in November or March, booked 50 days in advance, depart on a Monday or Saturday and return on a Sunday

Cheap flight deals from London to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 22 February 2025.

Round-trip from

£494

One-way from

£319

Popular in

August

Cheapest in

November

Average price

£621
23/3-29/5
  • 23/3-29/5
  • 2 total stops
  • 68h 50m total
  • London to Phnom Penh
30/3
  • 30/3
  • 2 total stops
  • 32h 55m total
  • London to Phnom Penh
Highest demand for flights based on searches. 11% potential increase in price (£71 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Average for round-trip flights in February 2025

Find flight deals from London to Phnom Penh

Cheapest flights from London to Phnom Penh
Explore the most affordable flight options available from London to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2025.

Sun 23/321:10LHR - PNH
1 stop31h 05mMultiple Airlines
Thu 29/512:15PNH - LHR
1 stop37h 45mMultiple Airlines
Deal found 20/2£494
Mon 17/317:40LHR - PNH
2 stops34h 35mAir China
Fri 28/319:50PNH - LHR
2 stops30h 50mAir China
Deal found 21/2£497
Fri 7/322:00LHR - PNH
1 stop18h 30mChina Southern
Mon 24/308:00PNH - LHR
1 stop17h 15mChina Southern
Deal found 21/2£531
Wed 26/210:30LGW - PNH
1 stop29h 45mChina Eastern
Tue 11/300:15PNH - LGW
1 stop37h 15mChina Eastern
Deal found 21/2£534
Wed 26/221:00LHR - PNH
1 stop19h 15mChina Eastern
Tue 11/300:15PNH - LHR
1 stop20h 40mChina Eastern
Deal found 21/2£539
Thu 2/1012:35LGW - PNH
1 stop28h 30mAir China
Sun 12/1000:20PNH - LGW
1 stop36h 15mAir China
Deal found 21/2£543
Mon 24/221:10LHR - PNH
1 stop31h 05mShenzhen Airlines
Sat 8/312:15PNH - LHR
1 stop37h 55mShenzhen Airlines
Deal found 21/2£550
Fri 14/310:30LGW - PNH
1 stop27h 00mMultiple Airlines
Sat 29/311:05PNH - LGW
2 stops34h 55mMultiple Airlines
Deal found 21/2£551
Wed 17/910:15LGW - PNH
1 stop20h 50mSingapore Airlines
Wed 1/1009:35PNH - LGW
1 stop26h 50mSingapore Airlines
Deal found 21/2£626
Tue 10/609:25LHR - PNH
1 stop26h 15mSingapore Airlines
Tue 1/718:55PNH - LHR
1 stop26h 50mSingapore Airlines
Deal found 21/2£629
Fri 3/1012:25LGW - PNH
1 stop29h 45mChina Southern
Thu 9/1012:05PNH - LGW
1 stop25h 05mChina Southern
Deal found 21/2£666
Thu 27/321:25LHR - PNH
1 stop29h 25mMalaysia Airlines
Fri 11/411:10PNH - LHR
1 stop35h 25mMalaysia Airlines
Deal found 21/2£703

Find flights from London to Phnom Penh within your budget

Customise your flight search to find flights from London 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 858,174 searches. Data last updated 22 February 2025.

Fly from

London

Fly to

Phnom Penh

Route

Depart

Return

Price

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 14/3

21:10-11:15

1 stop31h 05m

Phnom Penh Pochentong

Sat 29/3

12:15-19:00

1 stop37h 45m

£493

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 7/3

21:10-11:15

1 stop31h 05m

Phnom Penh Pochentong

Tue 18/3

12:15-19:10

1 stop37h 55m

£496

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 17/3

17:40-11:15

2 stops34h 35m

Phnom Penh Pochentong

Fri 28/3

19:50-19:40

2 stops30h 50m

£497

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 7/3

22:00-23:30

1 stop18h 30m

Phnom Penh Pochentong

Mon 24/3

08:00-18:15

1 stop17h 15m

£530

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Mon 3/3

10:30-23:15

1 stop29h 45m

Phnom Penh Pochentong

Sun 23/3

00:15-06:30

1 stop37h 15m

£534

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 7/3

21:00-23:15

1 stop19h 15m

Phnom Penh Pochentong

Mon 17/3

00:15-13:55

1 stop20h 40m

£538

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Sun 23/3

11:40-11:15

2 stops40h 35m

Phnom Penh Pochentong

Fri 28/3

11:05-06:30

2 stops26h 25m

£562

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Mon 5/5

10:15-17:40

1 stop25h 25m

Phnom Penh Pochentong

Tue 27/5

09:35-06:25

1 stop26h 50m

£627

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Tue 10/6

09:25-17:40

1 stop26h 15m

Phnom Penh Pochentong

Tue 1/7

18:55-15:45

1 stop26h 50m

£629

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Thu 27/3

21:25-09:50

1 stop29h 25m

Phnom Penh Pochentong

Fri 11/4

11:10-16:35

1 stop35h 25m

£703

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 47 results
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Best time to book a flight from London to Phnom Penh

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

Travel insights for flights from London to Phnom Penh

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

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

Use this chart to determine the optimal time to book a return flight from London to Phnom Penh. Price data was last updated on 14 February 2025.

Booking 50 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Phnom Penh. 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 London to Phnom Penh?

Currently, September is the cheapest month in which you can book a flight from London to Phnom Penh (average of £689). Flying from London to Phnom Penh in July is currently the most expensive (average of £1,232). 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 LON to PNH?

Find hourly flight availability from London 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 22 February 2025.

When flying from London to Phnom Penh, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 35% versus a flight at midday.

What is the cheapest day to fly from London to Phnom Penh?

Use this chart to determine the cheapest time to fly return from London to Phnom Penh. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London to Phnom Penh flight should consider departing on Saturday evenings when fares are most often at their lowest. Saturday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 - 250.0 inches per month. October is typically the wettest month, when rainfall can reach 250.0 mm. January is typically the driest time to visit Phnom Penh when rainfall is around 0.0 mm.

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 29.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 25.0 C).

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 22 February 2025.
Get a feel of what it's like to fly with Asiana Airlines, China Airlines and Emirates from London to Phnom Penh by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.4

Comfort

8.1

Overall

8.3

Food

8.1

Entertainment

7.8

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

Boarding

8.4

Comfort

8.1

Overall

8.3

Food

8.1

Entertainment

7.8

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

Boarding

8.4

Comfort

8.1

Overall

8.3

Food

8.1

Entertainment

7.8

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

Boarding

8.4

Comfort

8.1

Overall

8.3

Food

8.1

Entertainment

7.8

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

Boarding

8.4

Comfort

8.1

Overall

8.3

Food

8.1

Entertainment

7.8

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

Boarding

8.4

Comfort

8.1

Overall

8.3

Food

8.1

Entertainment

7.8

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

Related info for your journey

Find useful and relevant information for your journey from London 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?

    Located just 5.0 mi from the city center, Phnom Penh Pochentong is the airport most travelers will use when flying to Phnom Penh from London. Booking flights from London to Pochentong (PNH) should be relatively easy as there are 0 daily inbound flights from London from 12 different airlines.

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

    Our cheapest airline available from London to Phnom Penh is Air China. Our recent data shows that you can find tickets from as low as £497 on this airline. Additional options worth looking into are China Southern and China Eastern, starting at £531 and £534 round-trip. Air China is 27% cheaper than the average price of flights available within the next 90 days to this destination.

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

    One-way options have recently been found by users for as low as £325 on Shenzhen Airlines. Other airlines that offer cheap prices include Air China from £361 and China Southern from £383 one-way.

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

  • Where are the most common stopover locations when flying from London to Phnom Penh?

  • What are some popular things to do or see while on a stopover in Guangzhou?

    Baima Clothing Wholesale Market, Yide Lu, and Guangzhou Zoo are the most popular attractions in Guangzhou if you're in need of something to do during your stopover. Baima Clothing Wholesale Market, Yide Lu, and Guangzhou Zoo can be accessed by travelling approximately 17.3 mi, 19.5 mi, and 17.2 mi, respectively from Guangzhou Baiyun.

  • What are some popular points of interest to see during a stopover in Singapore?

    If you're on a stopover in Singapore and looking for things to do, consider visiting Sentosa, Merlion, or Universal Studios Singapore. Sentosa, Merlion, and Universal Studios Singapore can be visited by travelling about 13.4 mi, 10.5 mi, and 13.4 mi respectively from Singapore Changi. Travellers can rent a car at Singapore Changi for an average daily rate of £113 to make sightseeing during their stopover a little easier.

  • Where are the least popular stopover locations for London to Phnom Penh flights?

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from London to Phnom Penh (average of £689). Flying from London to Phnom Penh in July is currently the most expensive (average of £1,232). 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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Fly from London to Phnom Penh on these airlines

Choose from the following airlines for your flight from London to Phnom Penh. Flights are based on user searches made on Cheapflights and were last updated on 22 February 2025.

Top 10 airlines flying from London to Phnom Penh

Discover the top 10 airlines that operate flights from London 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 858,174 searches. Data last updated 22 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Shenzhen AirlinesCheapest£406Average£477FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
China SouthernCheapest£411Average£569FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£421Average£553FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest£613Average£683FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Singapore AirlinesCheapest£649Average£754FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Vietnam AirlinesCheapest£673Average£797FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Malaysia AirlinesCheapest£686Average£792FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Cathay PacificCheapest£700Average£822FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
EmiratesCheapest£718Average£929FlexibilityNo cancel feeOn-time75%
Search Emirates flights
Qatar AirwaysCheapest£745Average£939FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for London to Phnom Penh flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

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 Phnom Penh from London.

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

Certainly. Search results for flights to Phnom Penh from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for London to Phnom Penh flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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