Find flights
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Phnom Penh from £259

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 24/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PNH
23 Apr — 30 Apr1
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 18 April 2025.

Round-trip from

£492

One-way from

£259

Popular in

August

Cheapest in

November

Average price

£798
China Southern
  • China Southern
  • 5/5-27/5
  • 3 total stops
  • 54h 10m total
  • United Kingdom to Phnom Penh
Search Deals
24/6
  • 24/6
  • 3 total stops
  • 45h 40m total
  • United Kingdom to Phnom Penh
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 18 April 2025.

Mon 5/522:10LHR - PNH
1 stop20h 00mChina Southern
Tue 27/512:05PNH - LHR
2 stops34h 10mChina Southern
Deal found 17/4£492
Fri 6/622:05LHR - PNH
1 stop31h 05mShenzhen Airlines
Sun 6/712:15PNH - LHR
1 stop37h 35mShenzhen Airlines
Deal found 17/4£500
Thu 24/412:35LGW - PNH
1 stop28h 30mAir China
Tue 24/600:20PNH - LGW
1 stop36h 15mAir China
Deal found 18/4£526
Fri 2/518:40LGW - PNH
1 stop22h 35mChina Eastern
Tue 13/500:10PNH - LGW
1 stop20h 50mChina Eastern
Deal found 17/4£530
Sun 1/622:05LHR - PNH
1 stop31h 05mMultiple Airlines
Sat 7/600:20PNH - LHR
1 stop26h 10mMultiple Airlines
Deal found 17/4£533
Sun 1/611:35LGW - PNH
2 stops24h 40mMultiple Airlines
Mon 16/611:05PNH - LGW
2 stops33h 55mMultiple Airlines
Deal found 17/4£537
Fri 2/521:20LHR - PNH
1 stop19h 55mChina Eastern
Tue 13/500:10PNH - LHR
1 stop24h 30mChina Eastern
Deal found 17/4£561
Fri 2/520:25LHR - PNH
1 stop20h 40mAir China
Tue 13/500:20PNH - LHR
1 stop26h 10mAir China
Deal found 17/4£563
Sat 31/519:25LTN - PNH
2 stops33h 15mMultiple Airlines
Sun 15/611:05PNH - LTN
3 stops41h 40mMultiple Airlines
Deal found 17/4£603
Fri 19/912:25LGW - PNH
1 stop20h 05mChina Southern
Fri 3/1015:35PNH - LGW
2 stops32h 55mChina Southern
Deal found 17/4£626
Sat 31/518:15MAN - PNH
2 stops23h 55mMultiple Airlines
Sat 7/608:00PNH - MAN
2 stops20h 45mMultiple Airlines
Deal found 15/4£628
Thu 8/511:25LHR - PNH
1 stop24h 15mSingapore Airlines
Sun 25/514:05PNH - LHR
1 stop31h 40mSingapore Airlines
Deal found 17/4£645

Cheapflights Fare Finder

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 18 April 2025.
Use the filters below to find and compare flights from the United Kingdom to Phnom Penh that are best for you.

Fly from

United Kingdom

Fly to

Phnom Penh

Route

Depart

Return

Price

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 5/5

22:10-00:10

1 stop20h 00m

Phnom Penh Pochentong

Tue 27/5

12:05-16:15

2 stops34h 10m

£492

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 6/6

22:05-11:10

1 stop31h 05m

Phnom Penh Pochentong

Sun 6/7

12:15-19:50

1 stop37h 35m

£500

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Fri 2/5

18:40-23:15

1 stop22h 35m

Phnom Penh Pochentong

Tue 13/5

00:10-15:00

1 stop20h 50m

£530

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 1/6

22:05-11:10

1 stop31h 05m

Phnom Penh Pochentong

Sat 7/6

00:20-20:30

1 stop26h 10m

£533

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Sun 1/6

11:35-18:15

2 stops24h 40m

Phnom Penh Pochentong

Mon 16/6

11:05-15:00

2 stops33h 55m

£537

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 2/5

21:20-23:15

1 stop19h 55m

Phnom Penh Pochentong

Tue 13/5

00:10-18:40

1 stop24h 30m

£561

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 2/5

20:25-23:05

1 stop20h 40m

Phnom Penh Pochentong

Tue 13/5

00:20-20:30

1 stop26h 10m

£563

LondonPhnom Penh

LTN - PNH

LTNPNH

London Luton

Sat 31/5

19:25-10:40

2 stops33h 15m

Phnom Penh Pochentong

Sun 15/6

11:05-22:45

3 stops41h 40m

£603

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Fri 19/9

12:25-14:30

1 stop20h 05m

Phnom Penh Pochentong

Fri 3/10

15:35-18:30

2 stops32h 55m

£626

ManchesterPhnom Penh

MAN - PNH

MANPNH

Manchester

Sat 31/5

18:15-00:10

2 stops23h 55m

Phnom Penh Pochentong

Sat 7/6

08:00-22:45

2 stops20h 45m

£628

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 56 results
1
2
3
...
6

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.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Phnom Penh

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 18 April 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 18 April 2025.
Get a feel of what it's like to fly with Singapore Airlines, Emirates and KLM 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.
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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.
Singapore Airlines
8.1
Very Good
1,288 reviews
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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.
Emirates
8.0
Very Good
3,200 reviews
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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.
KLM
7.8
Good
1,329 reviews
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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.
Thai Airways
7.7
Good
323 reviews
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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.
Vietnam Airlines
7.6
Good
194 reviews
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Food

7.7

Boarding

8.2

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 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 £320 on Singapore Airlines. Other airlines that offer cheap prices include Shenzhen Airlines from £321 and China Eastern from £343 one-way.

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

    While some choose either London Gatwick - Phnom Penh Pochentong or London City - 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 18 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£311Average£548FlexibilityNo cancel feeOn-time67%
Search Air China flights
Shenzhen AirlinesCheapest£388Average£459FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
China SouthernCheapest£407Average£559FlexibilityNo cancel feeOn-time69%
Search China Southern flights
China EasternCheapest£541Average£833FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Singapore AirlinesCheapest£613Average£729FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Qatar AirwaysCheapest£650Average£825FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Malaysia AirlinesCheapest£656Average£752FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
British AirwaysCheapest£657Average£828FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Cathay PacificCheapest£668Average£811FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Etihad AirwaysCheapest£674Average£894FlexibilityNo cancel feeOn-time75%
Search Etihad 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 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights