Cheap flights from the United Kingdom to Phnom Penh from £387

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PNH
3 Sep — 10 Sep1
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 29 August 2025.

Round-trip from

£454

One-way from

£387

Popular in

July

Cheapest in

November

Average price

£802
24/11-8/12
  • 24/11-8/12
  • 4 total stops
  • 79h 35m total
  • United Kingdom to Phnom Penh
China Southern
  • China Southern
  • 5/9
  • 2 total stops
  • 35h 45m total
  • United Kingdom to Phnom Penh
Highest demand for flights based on searches. 13% potential increase in price (£78 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Average for round-trip flights in August 2025

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 29 August 2025.

Mon 24/1108:55MAN - PNH
2 stops31h 35mMultiple Airlines
Mon 8/1215:50PNH - MAN
2 stops48h 00mMultiple Airlines
Deal found 28/8£454
Sun 23/1121:30LHR - PNH
2 stops34h 05mChina Southern
Tue 9/1215:50PNH - LHR
1 stop33h 25mChina Southern
Deal found 27/8£481
Sun 5/1014:45LHR - PNH
1 stop34h 10mEtihad Airways
Thu 16/1008:30PNH - LHR
1 stop16h 15mEtihad Airways
Deal found 27/8£488
Mon 24/1108:25MAN - PNH
1 stop15h 05mEtihad Airways
Mon 8/1207:55PNH - MAN
1 stop29h 15mEtihad Airways
Deal found 27/8£488
Sun 30/1108:25MAN - PNH
1 stop15h 05mEtihad Airways
Mon 12/107:55PNH - MAN
1 stop29h 15mEtihad Airways
Deal found 26/8£489
Mon 6/1009:30LHR - PNH
1 stop15h 25mEtihad Airways
Mon 20/1008:30PNH - LHR
1 stop36h 45mEtihad Airways
Deal found 27/8£494
Mon 3/1108:50LHR - PNH
1 stop26h 35mEtihad Airways
Mon 17/1107:55PNH - LHR
1 stop29h 45mEtihad Airways
Deal found 27/8£495
Tue 7/1020:55LHR - PNH
1 stop28h 00mEtihad Airways
Tue 21/1008:30PNH - LHR
1 stop16h 15mEtihad Airways
Deal found 27/8£496
Thu 4/1222:00LHR - PNH
1 stop29h 50mChina Southern
Mon 22/1211:55PNH - LHR
1 stop37h 20mChina Southern
Deal found 27/8£499
Fri 21/1113:55LHR - PNH
1 stop21h 30mEtihad Airways
Tue 2/1207:55PNH - LHR
1 stop17h 15mEtihad Airways
Deal found 27/8£502
Mon 10/1122:00LHR - PNH
1 stop33h 35mChina Southern
Sat 22/1111:55PNH - LHR
1 stop37h 20mChina Southern
Deal found 27/8£504
Sat 4/1014:45LHR - PNH
1 stop34h 10mEtihad Airways
Tue 21/1008:30PNH - LHR
1 stop34h 15mEtihad Airways
Deal found 27/8£505

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 29 August 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

ManchesterPhnom Penh

MAN - PNH

MANPNH

Manchester

Mon 24/11

08:55-23:30

2 stops31h 35m

Phnom Penh Pochentong

Mon 8/12

15:50-08:50

2 stops48h 00m

£454

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Tue 25/11

21:30-14:35

2 stops34h 05m

Phnom Penh Pochentong

Thu 11/12

08:00-18:15

1 stop17h 15m

£481

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Tue 25/11

21:30-14:35

2 stops34h 05m

Phnom Penh Pochentong

Tue 9/12

11:55-18:15

1 stop37h 20m

£481

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Thu 27/11

21:30-10:50

2 stops30h 20m

Phnom Penh Pochentong

Thu 11/12

08:00-18:15

1 stop17h 15m

£481

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 23/11

21:30-10:50

2 stops30h 20m

Phnom Penh Pochentong

Wed 10/12

08:00-18:15

1 stop17h 15m

£481

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Wed 26/11

21:30-10:50

2 stops30h 20m

Phnom Penh Pochentong

Sun 7/12

08:00-18:15

1 stop17h 15m

£481

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Wed 26/11

21:30-10:50

2 stops30h 20m

Phnom Penh Pochentong

Mon 8/12

08:00-18:15

1 stop17h 15m

£481

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Thu 27/11

21:30-10:50

2 stops30h 20m

Phnom Penh Pochentong

Tue 9/12

11:55-18:15

1 stop37h 20m

£481

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 23/11

21:30-14:35

2 stops34h 05m

Phnom Penh Pochentong

Tue 9/12

15:50-18:15

1 stop33h 25m

£481

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Thu 30/10

21:30-14:35

2 stops34h 05m

Phnom Penh Pochentong

Thu 13/11

08:00-18:15

1 stop17h 15m

£481

Flights are sorted by cheapest return flights first.

Deals found on 27/8

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.

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 29 August 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.

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 29 August 2025.
Check out reviews from past customers who have flown with Emirates, Singapore Airlines, andThai Airways from the United Kingdom to Phnom Penh to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Overall

8.1

Boarding

8.1

Food

7.9

Crew

8.3

Entertainment

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

CEB - CRK

On the plane it was good. They served me food for ky special request. But my baggage arrived late, so today I received my 1 luggage and still the other one is need wait.

Comfort

8.0

Overall

8.1

Boarding

8.1

Food

7.9

Crew

8.3

Entertainment

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

CEB - CRK

On the plane it was good. They served me food for ky special request. But my baggage arrived late, so today I received my 1 luggage and still the other one is need wait.

Comfort

8.0

Overall

8.1

Boarding

8.1

Food

7.9

Crew

8.3

Entertainment

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

CEB - CRK

On the plane it was good. They served me food for ky special request. But my baggage arrived late, so today I received my 1 luggage and still the other one is need wait.

Comfort

8.0

Overall

8.1

Boarding

8.1

Food

7.9

Crew

8.3

Entertainment

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

CEB - CRK

On the plane it was good. They served me food for ky special request. But my baggage arrived late, so today I received my 1 luggage and still the other one is need wait.

Comfort

8.0

Overall

8.1

Boarding

8.1

Food

7.9

Crew

8.3

Entertainment

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

CEB - CRK

On the plane it was good. They served me food for ky special request. But my baggage arrived late, so today I received my 1 luggage and still the other one is need wait.

Comfort

8.0

Overall

8.1

Boarding

8.1

Food

7.9

Crew

8.3

Entertainment

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

CEB - CRK

On the plane it was good. They served me food for ky special request. But my baggage arrived late, so today I received my 1 luggage and still the other one is need wait.

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.

  • How long is the flight from United Kingdom to Phnom Penh?

    Airlines like China Southern and Etihad Airways fly from United Kingdom to Phnom Penh in about 15h 05m. The time it takes to get you to your destination can typically vary by up to 19h. The distance from United Kingdom to Phnom Penh is about 6260 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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 £387 on China Southern. Other airlines that offer cheap prices include XiamenAir from £420 and Emirates from £808 one-way.

  • What are the most popular routes 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

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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 29 August 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£360Average£571FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Shenzhen AirlinesCheapest£380Average£446FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
Air ChinaCheapest£405Average£498FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest£509Average£596FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Etihad AirwaysCheapest£514Average£667FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Singapore AirlinesCheapest£562Average£712FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Malaysia AirlinesCheapest£593Average£704FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
British AirwaysCheapest£612Average£779FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Qatar AirwaysCheapest£637Average£788FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
EmiratesCheapest£650Average£821FlexibilityNo cancel feeOn-time75%
Search Emirates flights

Fly with Cheapflights

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

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

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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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