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Cheap flights from the United Kingdom 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.
LHR — PNH
27 Feb — 6 Mar1
1 adult

Cheap flight deals from United Kingdom to Phnom Penh

Keep the following information in mind while searching for United Kingdom to Phnom Penh flight deals. Data was 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
  • United Kingdom to Phnom Penh
Search Deals
30/3
  • 30/3
  • 2 total stops
  • 32h 55m total
  • United Kingdom to Phnom Penh
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£71 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
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Find flight deals from United Kingdom to Phnom Penh

Cheapest flights from United Kingdom to Phnom Penh
Explore the most affordable flight options available from United Kingdom 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 United Kingdom to Phnom Penh within your budget

Customise your flight search to find flights from United Kingdom 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

United Kingdom

Fly to

Phnom Penh

Route

Depart

Return

Price

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 23/3

21:10-11:15

1 stop31h 05m

Phnom Penh Pochentong

Thu 29/5

12:15-20:00

1 stop37h 45m

£494

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

£531

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Mon 17/3

10:30-23:15

1 stop29h 45m

Phnom Penh Pochentong

Thu 27/3

00:15-06:30

1 stop37h 15m

£534

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 7/3

17:50-23:15

1 stop22h 25m

Phnom Penh Pochentong

Sun 23/3

00:15-13:55

1 stop20h 40m

£539

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Fri 14/3

10:30-20:30

1 stop27h 00m

Phnom Penh Pochentong

Sat 29/3

11:05-15:00

2 stops34h 55m

£551

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 23/3

21:10-11:15

1 stop31h 05m

Phnom Penh Pochentong

Fri 28/3

12:15-19:10

1 stop37h 55m

£560

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

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

£632

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sat 15/3

10:25-17:30

1 stop24h 05m

Phnom Penh Pochentong

Sun 4/5

18:20-16:35

1 stop28h 15m

£696

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 60 results
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Best time to book a flight from United Kingdom to Phnom Penh

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

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

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

Currently, September is the cheapest month in which you can book a flight from United Kingdom to Phnom Penh (average of £689). Flying from United Kingdom 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 GB to PNH?

Find hourly flight availability from United Kingdom 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 United Kingdom to Phnom Penh, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 United Kingdom to Phnom Penh by reading reviews from past customers. 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.
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Overall

8.3

Entertainment

7.8

Comfort

8.1

Boarding

8.4

Food

8.1

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.

Asiana Airlines
8.3
Very Good
445 reviews
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Overall

8.3

Entertainment

7.8

Comfort

8.1

Boarding

8.4

Food

8.1

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.

China Airlines
8.2
Very Good
726 reviews
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Overall

8.3

Entertainment

7.8

Comfort

8.1

Boarding

8.4

Food

8.1

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.

Emirates
8.1
Very Good
3,276 reviews
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Overall

8.3

Entertainment

7.8

Comfort

8.1

Boarding

8.4

Food

8.1

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.

Singapore Airlines
8.1
Very Good
1,297 reviews
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Overall

8.3

Entertainment

7.8

Comfort

8.1

Boarding

8.4

Food

8.1

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.

KLM
7.8
Good
1,332 reviews
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Overall

8.3

Entertainment

7.8

Comfort

8.1

Boarding

8.4

Food

8.1

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 United Kingdom 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 United Kingdom?

    For a flight from United Kingdom to Phnom Penh, you will be flying into Pochentong. Phnom Penh Pochentong (PNH) is just 5.0 mi from the center of the city.

  • What are the cheapest airlines to fly from United Kingdom 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 United Kingdom to Phnom Penh?

    While some choose either London City - Phnom Penh Pochentong or London Stansted - Phnom Penh Pochentong, London Heathrow - Phnom Penh Pochentong is the most popular route from United Kingdom to Phnom Penh.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Phnom Penh?

    Currently, September is the cheapest month in which you can book a flight from United Kingdom to Phnom Penh (average of £689). Flying from United Kingdom 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from United Kingdom to Phnom Penh

Discover the top 10 airlines that operate flights from United Kingdom 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£604FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£421Average£553FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest£567Average£746FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Singapore AirlinesCheapest£649Average£765FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
British AirwaysCheapest£654Average£894FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Vietnam AirlinesCheapest£673Average£797FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Qatar AirwaysCheapest£680Average£915FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Malaysia AirlinesCheapest£686Average£792FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Cathay PacificCheapest£700Average£850FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights

Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from United Kingdom to Phnom Penh. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from United Kingdom to Phnom Penh.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from United Kingdom to Phnom Penh, users can toggle the no change fees filter when performing a flight search.

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

Not ready to book yet? You can track prices for flights from United Kingdom to Phnom Penh on Cheapflights with our Price Alert feature and get notified when better prices are available.

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