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Cheap flights from Phnom Penh to the United Kingdom from £251

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 30/7. Fares are subject to change and may not be available on all flights or dates of travel.
PNH — LHR
9 Jul — 16 Jul1
1 adult

Cheap flight deals from Phnom Penh to United Kingdom

Keep the following information in mind while searching for Phnom Penh to United Kingdom flight deals. Data was last updated 4 July 2025.

Round-trip from

£528

One-way from

£251

Popular in

July

Cheapest in

November

Average price

£994
China Eastern
  • China Eastern
  • 18/7-1/8
  • 2 total stops
  • 50h 30m total
  • Phnom Penh to United Kingdom
Search Deals
China Eastern
  • China Eastern
  • 30/7
  • 1 total stop
  • 20h 50m total
  • Phnom Penh to United Kingdom
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£81 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from Phnom Penh to United Kingdom

Cheapest flights from Phnom Penh to United Kingdom
Explore the most affordable flight options available from Phnom Penh to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Fri 18/700:10PNH - LGW
1 stop20h 50mChina Eastern
Fri 1/811:35LGW - PNH
1 stop29h 40mChina Eastern
Deal found 3/7£528
Thu 21/812:05PNH - LHR
1 stop36h 55mChina Southern
Wed 27/822:10LHR - PNH
1 stop34h 20mChina Southern
Deal found 2/7£548
Tue 22/719:05PNH - STN
3 stops26h 40mMultiple Airlines
Tue 26/807:10STN - PNH
3 stops35h 00mMultiple Airlines
Deal found 1/7£606
Tue 22/718:50PNH - LHR
2 stops29h 50mChina Eastern
Tue 26/821:20LHR - PNH
2 stops32h 15mChina Eastern
Deal found 1/7£607
Wed 23/719:10PNH - LGW
3 stops35h 45mMultiple Airlines
Wed 27/806:00LGW - PNH
3 stops30h 15mMultiple Airlines
Deal found 1/7£630
Thu 21/819:10PNH - LHR
2 stops29h 50mMultiple Airlines
Wed 27/808:40LHR - PNH
3 stops27h 35mMultiple Airlines
Deal found 2/7£661
Fri 19/920:50PNH - STN
2 stops22h 05mEmirates
Sat 27/921:10STN - PNH
2 stops37h 25mEmirates
Deal found 2/7£679
Wed 23/717:40PNH - LGW
2 stops19h 00mQatar Airways
Wed 27/809:00LGW - PNH
2 stops25h 15mQatar Airways
Deal found 1/7£706
Tue 22/720:50PNH - LGW
2 stops28h 55mEmirates
Wed 27/810:05LGW - PNH
2 stops48h 30mEmirates
Deal found 1/7£714
Thu 18/1200:25PNH - LHR
1 stop22h 30mAir China
Fri 2/120:25LHR - PNH
1 stop19h 45mAir China
Deal found 2/7£728
Sun 17/820:50PNH - LHR
2 stops25h 20mEmirates
Sun 24/822:15LHR - PNH
2 stops36h 20mEmirates
Deal found 3/7£748
Tue 22/721:15PNH - LCY
2 stops16h 55mMultiple Airlines
Wed 27/809:20LCY - PNH
3 stops26h 55mMultiple Airlines
Deal found 1/7£815

Cheapflights Fare Finder

Customise your flight search to find flights from Phnom Penh to United Kingdom 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 4 July 2025.
Use the filters below to find and compare flights from Phnom Penh to the United Kingdom that are best for you.

Fly from

Phnom Penh

Fly to

United Kingdom

Route

Depart

Return

Price

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Fri 18/7

00:10-15:00

1 stop20h 50m

London Gatwick

Fri 1/8

11:35-23:15

1 stop29h 40m

£528

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 21/8

12:05-19:00

1 stop36h 55m

London Heathrow

Wed 27/8

22:10-14:30

1 stop34h 20m

£548

Phnom PenhLondon

PNH - STN

PNHSTN

Phnom Penh Pochentong

Tue 22/7

19:05-15:45

3 stops26h 40m

London Stansted

Tue 26/8

07:10-00:10

3 stops35h 00m

£606

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Tue 22/7

18:50-18:40

2 stops29h 50m

London Heathrow

Tue 26/8

21:20-11:35

2 stops32h 15m

£607

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Wed 23/7

19:10-00:55

3 stops35h 45m

London Gatwick

Wed 27/8

06:00-18:15

3 stops30h 15m

£630

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 21/8

19:10-19:00

2 stops29h 50m

London Heathrow

Wed 27/8

08:40-18:15

3 stops27h 35m

£661

Phnom PenhLondon

PNH - STN

PNHSTN

Phnom Penh Pochentong

Fri 19/9

20:50-12:55

2 stops22h 05m

London Stansted

Sat 27/9

21:10-16:35

2 stops37h 25m

£679

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Wed 23/7

17:40-06:40

2 stops19h 00m

London Gatwick

Wed 27/8

09:00-16:15

2 stops25h 15m

£706

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Tue 22/7

20:50-19:45

2 stops28h 55m

London Gatwick

Wed 27/8

10:05-16:35

2 stops48h 30m

£714

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 18/12

00:25-15:55

1 stop22h 30m

London Heathrow

Fri 2/1

20:25-23:10

1 stop19h 45m

£728

Flights are sorted by cheapest return flights first.

Deals found on 2/7

Showing 1-10 of 39 results
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Best time to book a flight from Phnom Penh to United Kingdom

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

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

Currently, January is the cheapest month in which you can book a flight from Phnom Penh to United Kingdom (average of £112). Flying from Phnom Penh to United Kingdom in August is currently the most expensive (average of £164). 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 PNH to GB?

Find hourly flight availability from Phnom Penh to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 July 2025.

When flying from Phnom Penh to United Kingdom, 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 United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated 4 July 2025.
Check out reviews from past customers who have flown with Emirates, Singapore Airlines, andKLM from Phnom Penh to the United Kingdom 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.
Emirates
8.1
Very Good
3,287 reviews
Check prices

Crew

8.3

Food

7.8

Entertainment

8.2

Comfort

8.0

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2025

ATH - EWR

Best flight I taken. Airline stewards were very attentive and creative a very comfortable environment. Food was plentiful, gave a variety for each meal and delicious.
Emirates
8.1
Very Good
3,287 reviews
Emirates
8.1
Very Good
3,287 reviews
Check prices

Crew

8.3

Food

7.8

Entertainment

8.2

Comfort

8.0

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2025

ATH - EWR

Best flight I taken. Airline stewards were very attentive and creative a very comfortable environment. Food was plentiful, gave a variety for each meal and delicious.
Singapore Airlines
8.1
Very Good
1,320 reviews
Emirates
8.1
Very Good
3,287 reviews
Check prices

Crew

8.3

Food

7.8

Entertainment

8.2

Comfort

8.0

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2025

ATH - EWR

Best flight I taken. Airline stewards were very attentive and creative a very comfortable environment. Food was plentiful, gave a variety for each meal and delicious.
KLM
7.8
Good
1,363 reviews
Emirates
8.1
Very Good
3,287 reviews
Check prices

Crew

8.3

Food

7.8

Entertainment

8.2

Comfort

8.0

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2025

ATH - EWR

Best flight I taken. Airline stewards were very attentive and creative a very comfortable environment. Food was plentiful, gave a variety for each meal and delicious.
Thai Airways
7.7
Good
336 reviews
Emirates
8.1
Very Good
3,287 reviews
Check prices

Crew

8.3

Food

7.8

Entertainment

8.2

Comfort

8.0

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2025

ATH - EWR

Best flight I taken. Airline stewards were very attentive and creative a very comfortable environment. Food was plentiful, gave a variety for each meal and delicious.
China Southern
7.6
Good
100 reviews
Emirates
8.1
Very Good
3,287 reviews
Check prices

Crew

8.3

Food

7.8

Entertainment

8.2

Comfort

8.0

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2025

ATH - EWR

Best flight I taken. Airline stewards were very attentive and creative a very comfortable environment. Food was plentiful, gave a variety for each meal and delicious.

Related info for your journey

Find useful and relevant information for your journey from Phnom Penh to United Kingdom. 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 from for flights from Phnom Penh to United Kingdom?

    Most people fly from Phnom Penh Pochentong (PNH) if they book a flight from Phnom Penh to United Kingdom. Phnom Penh Pochentong is conveniently located just 5.0 mi from Phnom Penh’s city center.

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

    To fly one-way, consider booking your trip with China Eastern, which is currently one of the cheapest options available, starting at £251. China Southern flights start at £314 while deals on Thai Airways start at £347 one-way.

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

    The most popular flight routes from Phnom Penh to United Kingdom are Phnom Penh Pochentong - London Heathrow, Phnom Penh Pochentong - London Gatwick and Phnom Penh Pochentong - London Stansted.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Phnom Penh to United Kingdom (average of £112). Flying from Phnom Penh to United Kingdom in August is currently the most expensive (average of £164). 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.

Alternative routes for Phnom Penh to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
Phnom Penh to Heathrow flights
Phnom Penh to Gatwick flights
Phnom Penh to Belfast City flights
Phnom Penh to Birmingham flights
Phnom Penh to Edinburgh flights
Phnom Penh to Manchester flights

Top airline flying from Phnom Penh to United Kingdom

Discover the top airline that operate flights from Phnom Penh to United Kingdom. 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 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£475Average£560FlexibilityNo cancel feeOn-time69%
Search China Southern flights

Fly with Cheapflights

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

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

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 Phnom Penh to United Kingdom.

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

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