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Cheap flights from London Heathrow Airport to Phnom Penh from £368

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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PNH
22 Dec — 29 Dec1
1 adult

The best prices from London Heathrow to Phnom Penh Pochentong are usually found in May or June, booked 44 days in advance, depart on a Monday or Saturday and return on a Wednesday

Cheap flight deals from Heathrow to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Phnom Penh (PNH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 December 2024.

Round-trip from

£506

One-way from

£368

Popular in

August

Cheapest in

May

Average price

£1,007
Air China
  • Air China
  • 22/1-4/2
  • 2 total stops
  • 46h 55m total
  • London to Phnom Penh
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1/1
  • 1/1
  • 2 total stops
  • 52h 25m total
  • London to Phnom Penh
Search Deals
High demand for flights, 15% potential price rise
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Best time to find cheap flights, 3% potential price drop
Search Deals
Average for round-trip flights in December 2024
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Find flight deals from Heathrow to Phnom Penh

Cheapest flights from Heathrow to Phnom Penh
Explore the most affordable flight options available from Heathrow to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 December 2024.

Sat 28/1221:10LHR - PNH
1 stop31h 05mShenzhen Airlines
Fri 14/319:50PNH - LHR
1 stop30h 20mShenzhen Airlines
Deal found 16/12£732
Sat 28/1221:30LHR - PNH
2 stops43h 00mChina Southern
Tue 11/308:00PNH - LHR
1 stop17h 15mChina Southern
Deal found 16/12£750
Fri 27/1220:25LHR - PNH
1 stop19h 45mAir China
Thu 13/300:25PNH - LHR
1 stop22h 30mAir China
Deal found 16/12£767
Fri 27/1220:50LHR - PNH
2 stops41h 05mMultiple Airlines
Fri 14/319:50PNH - LHR
1 stop30h 20mMultiple Airlines
Deal found 16/12£813
Sat 28/1221:00LHR - PNH
2 stops30h 00mChina Eastern
Thu 13/300:15PNH - LHR
1 stop20h 40mChina Eastern
Deal found 16/12£908
Sun 29/1217:50LHR - PNH
1 stop33h 35mCathay Pacific
Mon 20/111:45PNH - LHR
1 stop34h 15mCathay Pacific
Deal found 16/12£937
Sun 29/1215:50LHR - PNH
2 stops19h 35mEmirates
Mon 20/121:30PNH - LHR
2 stops23h 20mEmirates
Deal found 16/12£1,076
Wed 25/1210:25LHR - PNH
1 stop16h 25mMalaysia Airlines
Mon 30/1218:30PNH - LHR
1 stop27h 55mMalaysia Airlines
Deal found 16/12£1,296
Sat 28/1220:10LHR - PNH
1 stop20h 10mAsiana Airlines
Thu 13/300:30PNH - LHR
1 stop24h 35mAsiana Airlines
Deal found 16/12£1,395
Fri 27/1218:50LHR - PNH
1 stop20h 35mKorean Air
Fri 14/323:45PNH - LHR
1 stop23h 45mKorean Air
Deal found 15/12£1,414
Sat 28/1219:20LHR - PNH
2 stops31h 45mEtihad Airways
Wed 1/115:20PNH - LHR
2 stops34h 05mEtihad Airways
Deal found 16/12£1,479
Fri 27/1214:15LHR - PNH
2 stops18h 10mQatar Airways
Wed 1/117:10PNH - LHR
2 stops20h 15mQatar Airways
Deal found 16/12£1,541

Find flights from Heathrow to Phnom Penh within your budget

Customise your flight search to find flights from Heathrow 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 17 December 2024.

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Any airport

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Any airport

Route

Depart

Return

Price

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Wed 22/1

17:40-23:10

1 stop22h 30m

Phnom Penh Pochentong

Tue 4/2

00:25-17:50

1 stop24h 25m

£506

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 5/5

22:05-11:10

1 stop31h 05m

Phnom Penh Pochentong

Tue 27/5

12:15-20:00

1 stop37h 45m

£507

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Tue 14/1

21:30-10:50

2 stops30h 20m

Phnom Penh Pochentong

Thu 27/2

11:55-18:15

1 stop37h 20m

£509

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Wed 22/1

17:40-11:15

2 stops34h 35m

Phnom Penh Pochentong

Wed 5/2

15:50-18:15

1 stop33h 25m

£539

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 21/2

17:50-10:00

2 stops33h 10m

Phnom Penh Pochentong

Wed 5/3

00:15-17:30

1 stop24h 15m

£615

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 12/1

19:00-18:25

2 stops40h 25m

Phnom Penh Pochentong

Mon 20/1

21:30-16:10

2 stops25h 40m

£764

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 11/5

19:50-13:00

2 stops35h 10m

Phnom Penh Pochentong

Sun 1/6

17:45-17:05

2 stops29h 20m

£769

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 3/3

14:15-15:25

2 stops18h 10m

Phnom Penh Pochentong

Sun 13/4

17:40-06:25

2 stops18h 45m

£775

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 10/1

10:55-17:35

1 stop23h 40m

Phnom Penh Pochentong

Sat 18/1

18:55-15:35

1 stop27h 40m

£808

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Wed 1/1

19:25-06:50

2 stops52h 25m

£368

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Showing 1-10 of 20 results
1
2

Best time to book a flight from Heathrow to Phnom Penh

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

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

How far ahead should I book a flight from London Heathrow Airport to Phnom Penh?

Use this chart to determine the optimal time to book a return flight from Heathrow to Phnom Penh. Price data was last updated on 13 December 2024.

The best time to book flights from London Heathrow Airport to Phnom Penh is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London Heathrow Airport to Phnom Penh?

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Phnom Penh (average of £689). Flying from London Heathrow Airport to Phnom Penh in July is currently the most expensive (average of £1,034). 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 LHR to PNH?

Find hourly flight availability from Heathrow 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 17 December 2024.

When flying from London Heathrow Airport to Phnom Penh, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 39% versus a flight at midday.

What is the cheapest day to fly from London Heathrow Airport to Phnom Penh?

Use this chart to determine the cheapest time to fly return from Heathrow to Phnom Penh. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to Phnom Penh flight should consider departing on Monday evenings when fares are most often at their lowest. Friday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 17 December 2024.
Read reviews from past customers who have flown Air China, China Eastern and Qatar Airways from London to Phnom Penh. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very Good
3,411 reviews
Check prices

Entertainment

8.2

Comfort

8.0

Food

7.9

Boarding

8.1

Crew

8.3

Overall

8.1

Reviews

1 / 10

Good although thete was 2 hours delay in the flight but still is good 😊

Emirates
8.1
Very Good
3,411 reviews
Emirates
8.1
Very Good
3,411 reviews
Check prices

Entertainment

8.2

Comfort

8.0

Food

7.9

Boarding

8.1

Crew

8.3

Overall

8.1

Reviews

1 / 10

Good although thete was 2 hours delay in the flight but still is good 😊

Singapore Airlines
8.1
Very Good
1,329 reviews
Emirates
8.1
Very Good
3,411 reviews
Check prices

Entertainment

8.2

Comfort

8.0

Food

7.9

Boarding

8.1

Crew

8.3

Overall

8.1

Reviews

1 / 10

Good although thete was 2 hours delay in the flight but still is good 😊

Thai Airways
7.8
Good
359 reviews
Emirates
8.1
Very Good
3,411 reviews
Check prices

Entertainment

8.2

Comfort

8.0

Food

7.9

Boarding

8.1

Crew

8.3

Overall

8.1

Reviews

1 / 10

Good although thete was 2 hours delay in the flight but still is good 😊

Vietnam Airlines
7.7
Good
224 reviews
Emirates
8.1
Very Good
3,411 reviews
Check prices

Entertainment

8.2

Comfort

8.0

Food

7.9

Boarding

8.1

Crew

8.3

Overall

8.1

Reviews

1 / 10

Good although thete was 2 hours delay in the flight but still is good 😊

Cathay Pacific
7.5
Good
844 reviews
Emirates
8.1
Very Good
3,411 reviews
Check prices

Entertainment

8.2

Comfort

8.0

Food

7.9

Boarding

8.1

Crew

8.3

Overall

8.1

Reviews

1 / 10

Good although thete was 2 hours delay in the flight but still is good 😊

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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 London Heathrow?

    Located just 5.0 mi from the city center, Phnom Penh Pochentong is the airport most travelers will use when flying to Phnom Penh from London Heathrow. Booking flights from London Heathrow to Pochentong (PNH) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 12 different airlines.

  • What are the cheapest airlines flying from London Heathrow Airport to Phnom Penh round-trip?

    Currently priced at £506, Air China will fly you from London Heathrow Airport to Phnom Penh and back. In addition to Air China, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Shenzhen Airlines and China Southern - these airlines can fly you to your destination from £507 and £509, respectively. You may be able to fly from London Heathrow Airport to Phnom Penh for 32% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from London Heathrow Airport to Phnom Penh one-way?

    To fly one-way, consider booking your trip with Shenzhen Airlines, which is currently one of the cheapest options available, starting at £405. Air China flights start at £408 while deals on China Southern start at £439 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 London Heathrow Airport to Phnom Penh?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Phnom Penh (average of £689). Flying from London Heathrow Airport to Phnom Penh in July is currently the most expensive (average of £1,034). 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 Heathrow to Phnom Penh

Discover the top 10 airlines that operate flights from Heathrow 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 17 December 2024.
AirlineCheapestAverageFlexibilityOn-time
Shenzhen AirlinesCheapest£406Average£477FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
China SouthernCheapest£414Average£546FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£460Average£533FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest£625Average£949FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Malaysia AirlinesCheapest£662Average£785FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Singapore AirlinesCheapest£669Average£752FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Cathay PacificCheapest£698Average£846FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Vietnam AirlinesCheapest£716Average£799FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Qatar AirwaysCheapest£778Average£908FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
British AirwaysCheapest£790Average£914FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Phnom Penh from Heathrow.

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

Yes! Cheapflights helps users easily find flights from Heathrow to Phnom Penh with no change fees.

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

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

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