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Cheap flights from the United Kingdom to Phnom Penh from £248

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.
LHR — PNH
2 Apr — 9 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 28 March 2025.

Round-trip from

£502

One-way from

£248

Popular in

August

Cheapest in

November

Average price

£596
Shenzhen Airlines
  • Shenzhen Airlines
  • 25/4-10/5
  • 2 total stops
  • 68h 50m total
  • United Kingdom to Phnom Penh
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11/5
  • 11/5
  • 3 total stops
  • 37h 45m total
  • United Kingdom to Phnom Penh
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£58 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 March 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 28 March 2025.

Fri 25/422:05LHR - PNH
1 stop31h 05mShenzhen Airlines
Sat 10/512:15PNH - LHR
1 stop37h 45mShenzhen Airlines
Deal found 26/3£502
Sun 27/419:15LHR - PNH
2 stops33h 25mChina Southern
Sun 4/512:05PNH - LHR
1 stop36h 55mChina Southern
Deal found 28/3£505
Sat 13/915:05EDI - PNH
2 stops27h 05mMultiple Airlines
Sat 11/1008:00PNH - EDI
2 stops21h 10mMultiple Airlines
Deal found 28/3£507
Sat 15/1117:40LHR - PNH
1 stop22h 30mAir China
Fri 28/1100:25PNH - LHR
1 stop24h 25mAir China
Deal found 27/3£512
Mon 5/518:05LGW - PNH
1 stop23h 10mChina Eastern
Mon 26/500:10PNH - LGW
1 stop20h 50mChina Eastern
Deal found 27/3£525
Mon 5/521:20LHR - PNH
1 stop19h 55mChina Eastern
Mon 26/500:10PNH - LHR
1 stop24h 30mChina Eastern
Deal found 27/3£530
Mon 12/511:15LGW - PNH
2 stops41h 55mMultiple Airlines
Wed 28/512:15PNH - LGW
2 stops24h 40mMultiple Airlines
Deal found 28/3£543
Sun 4/505:55MAN - PNH
2 stops22h 45mChina Southern
Tue 13/508:00PNH - MAN
2 stops20h 35mChina Southern
Deal found 28/3£556
Fri 19/912:25LGW - PNH
1 stop16h 15mChina Southern
Fri 3/1015:35PNH - LGW
2 stops32h 55mChina Southern
Deal found 27/3£558
Wed 19/1119:50MAN - PNH
1 stop28h 30mEtihad Airways
Mon 2/208:40PNH - MAN
1 stop16h 40mEtihad Airways
Deal found 28/3£568
Mon 12/522:05LHR - PNH
1 stop31h 05mMultiple Airlines
Tue 27/500:10PNH - LHR
1 stop24h 30mMultiple Airlines
Deal found 28/3£575
Tue 18/1120:55LHR - PNH
2 stops30h 10mEtihad Airways
Tue 25/1115:20PNH - LHR
2 stops34h 05mEtihad Airways
Deal found 27/3£593

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 28 March 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

Fri 25/4

22:05-11:10

1 stop31h 05m

Phnom Penh Pochentong

Sat 10/5

12:15-20:00

1 stop37h 45m

£502

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 27/4

19:15-10:40

2 stops33h 25m

Phnom Penh Pochentong

Sun 4/5

12:05-19:00

1 stop36h 55m

£505

EdinburghPhnom Penh

EDI - PNH

EDIPNH

Edinburgh Turnhouse

Sat 13/9

15:05-00:10

2 stops27h 05m

Phnom Penh Pochentong

Sat 11/10

08:00-23:10

2 stops21h 10m

£507

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Mon 5/5

18:05-23:15

1 stop23h 10m

Phnom Penh Pochentong

Mon 26/5

00:10-15:00

1 stop20h 50m

£525

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 5/5

21:20-23:15

1 stop19h 55m

Phnom Penh Pochentong

Mon 26/5

00:10-18:40

1 stop24h 30m

£530

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Mon 12/5

11:15-11:10

2 stops41h 55m

Phnom Penh Pochentong

Wed 28/5

12:15-06:55

2 stops24h 40m

£543

ManchesterPhnom Penh

MAN - PNH

MANPNH

Manchester

Sun 4/5

05:55-10:40

2 stops22h 45m

Phnom Penh Pochentong

Tue 13/5

08:00-22:35

2 stops20h 35m

£556

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Fri 19/9

12:25-10:40

1 stop16h 15m

Phnom Penh Pochentong

Fri 3/10

15:35-18:30

2 stops32h 55m

£558

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 11/5

14:40-18:15

2 stops21h 35m

Phnom Penh Pochentong

Sun 18/5

11:05-12:40

3 stops31h 35m

£563

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 25/4

20:25-23:05

1 stop20h 40m

Phnom Penh Pochentong

Fri 9/5

00:20-20:30

1 stop26h 10m

£593

Flights are sorted by cheapest return flights first.

Deals found on 28/3

Showing 1-10 of 54 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.

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 28 March 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 28 March 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
1,285 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.7

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Singapore Airlines
8.1
Very Good
1,285 reviews
Singapore Airlines
8.1
Very Good
1,285 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.7

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Emirates
8.0
Very Good
3,192 reviews
Singapore Airlines
8.1
Very Good
1,285 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.7

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
KLM
7.8
Good
1,321 reviews
Singapore Airlines
8.1
Very Good
1,285 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.7

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Vietnam Airlines
7.6
Good
192 reviews
Singapore Airlines
8.1
Very Good
1,285 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.7

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Finnair
7.6
Good
1,267 reviews
Singapore Airlines
8.1
Very Good
1,285 reviews
Check prices

Overall

8.1

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.7

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

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 £310 on Singapore Airlines. Other airlines that offer cheap prices include Shenzhen Airlines from £321 and China Eastern from £345 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 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 28 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£318Average£557FlexibilityNo cancel feeOn-time67%
Search Air China flights
Shenzhen AirlinesCheapest£397Average£469FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
China SouthernCheapest£417Average£570FlexibilityNo cancel feeOn-time69%
Search China Southern flights
China EasternCheapest£554Average£852FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Singapore AirlinesCheapest£616Average£741FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
British AirwaysCheapest£639Average£844FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Qatar AirwaysCheapest£665Average£866FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Malaysia AirlinesCheapest£670Average£769FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Cathay PacificCheapest£684Average£832FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Vietnam AirlinesCheapest£701Average£782FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines 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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