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£265+ Cheap flights to Phnom Penh

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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
— PNH
23 Jul — 30 Jul1
1 adult

Flights to Phnom Penh in 2025

Find the latest flights to Phnom Penh in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 18 July 2025.

Return from

£530

One-way from

£265

Popular in

July

Cheapest in

November

Average price

£853
China Southern
  • China Southern
  • 6/10-18/10
  • 3 total stops
  • 66h 50m total
  • London to Phnom Penh
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31/8
  • 31/8
  • 3 total stops
  • 56h 30m total
  • London to Phnom Penh
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£70 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
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Average for return flights in July 2025
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Find flight deals to Phnom Penh

Cheapest flights to Phnom Penh
Explore the most affordable flight options available to Phnom Penh. Find the lowest fares based on data from user searches, with prices last updated on 18 July 2025.

Mon 6/1022:10LHR - PNH
1 stop34h 20mChina Southern
Sat 18/1015:35PNH - LHR
2 stops32h 30mChina Southern
Deal found 18/7£530
Mon 3/1117:00LGW - PNH
1 stop23h 15mChina Eastern
Sat 29/1100:15PNH - LGW
1 stop20h 45mChina Eastern
Deal found 16/7£535
Tue 23/918:40LHR - PNH
2 stops32h 00mSWISS
Tue 7/1018:55PNH - LHR
2 stops19h 00mSWISS
Deal found 17/7£541
Mon 1/1211:40LGW - PNH
2 stops52h 30mAir China
Sat 13/1211:40PNH - LGW
2 stops24h 55mAir China
Deal found 17/7£542
Fri 12/922:05LHR - PNH
1 stop31h 05mShenzhen Airlines
Sun 21/912:15PNH - LHR
1 stop37h 35mShenzhen Airlines
Deal found 16/7£545
Tue 23/917:30LHR - PNH
2 stops33h 10mLufthansa
Tue 7/1018:55PNH - LHR
2 stops19h 20mLufthansa
Deal found 17/7£546
Sat 4/1022:40LHR - PNH
1 stop18h 25mAir China
Mon 3/1100:25PNH - LHR
1 stop22h 30mAir China
Deal found 17/7£557
Fri 19/912:00LGW - PNH
1 stop16h 40mChina Southern
Fri 3/1012:05PNH - LGW
2 stops36h 25mChina Southern
Deal found 17/7£558
Tue 23/913:05LCY - PNH
2 stops37h 35mSWISS
Tue 7/1018:55PNH - LCY
2 stops23h 35mSWISS
Deal found 17/7£571
Sat 4/1022:05LHR - PNH
1 stop31h 05mMultiple Airlines
Wed 12/1100:15PNH - LHR
1 stop24h 15mMultiple Airlines
Deal found 16/7£577
Mon 27/1018:40LGW - PNH
2 stops36h 10mMultiple Airlines
Sat 8/1109:35PNH - LGW
2 stops39h 15mMultiple Airlines
Deal found 18/7£582
Mon 27/1017:15LCY - PNH
2 stops37h 35mMultiple Airlines
Sat 8/1109:35PNH - LCY
2 stops38h 30mMultiple Airlines
Deal found 18/7£615

Cheapflights Fare Finder

Locate flights to Phnom Penh that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 18 July 2025.
Use the filters below to find and compare flights to Phnom Penh that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 6/10

22:10-14:30

1 stop34h 20m

Phnom Penh Pochentong

Sat 18/10

15:35-18:05

2 stops32h 30m

£530

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Mon 3/11

17:00-23:15

1 stop23h 15m

Phnom Penh Pochentong

Sat 29/11

00:15-14:00

1 stop20h 45m

£535

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 12/1

09:00-18:30

1 stop26h 30m

Phnom Penh Pochentong

Sat 24/1

19:55-18:25

1 stop29h 30m

£536

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Tue 23/9

18:40-08:40

2 stops32h 00m

Phnom Penh Pochentong

Tue 7/10

18:55-07:55

2 stops19h 00m

£541

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Mon 1/12

11:40-23:10

2 stops52h 30m

Phnom Penh Pochentong

Sat 13/12

11:40-05:35

2 stops24h 55m

£542

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 12/9

22:05-11:10

1 stop31h 05m

Phnom Penh Pochentong

Sun 21/9

12:15-19:50

1 stop37h 35m

£545

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Tue 23/9

17:30-08:40

2 stops33h 10m

Phnom Penh Pochentong

Tue 7/10

18:55-08:15

2 stops19h 20m

£546

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sat 4/10

22:40-23:05

1 stop18h 25m

Phnom Penh Pochentong

Mon 3/11

00:25-15:55

1 stop22h 30m

£557

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Fri 19/9

12:00-10:40

1 stop16h 40m

Phnom Penh Pochentong

Fri 3/10

12:05-18:30

2 stops36h 25m

£558

LondonPhnom Penh

LCY - PNH

LCYPNH

London City

Tue 23/9

13:05-08:40

2 stops37h 35m

Phnom Penh Pochentong

Tue 7/10

18:55-12:30

2 stops23h 35m

£571

Flights are sorted by cheapest return flights first.

Deals found on 16/7

Showing 1-10 of 42 results
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Best time to book a flight to Phnom Penh

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

When is the best time to book a flight to Phnom Penh?

Use this chart to determine the optimal time to book a return flight from London to Phnom Penh. Price data was last updated on 11 July 2025.

The price you pay for your flight to Phnom Penh may vary depending on when you book. For the best chance of a lower fare, look to book 62 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

How long is the flight to Phnom Penh?

On average, a flight from London to Phnom Penh takes 19 hours 26 minutes. Flights to Phnom Penh from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to Phnom Penh?

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

Users looking for the lowest fares to Phnom Penh should consider flying on Monday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Thursday afternoons, when prices are usually at their highest.

What are the most popular airlines that fly to Phnom Penh?

The most popular airlines flying from London to Phnom Penh are China Southern, Air China and Singapore Airlines.

China Southern
China Southern
From £487
Air China
Air China
From £564
Singapore Airlines
Singapore Airlines
From £798
Thai Airways
Thai Airways
From £1,006

What are the cheapest airlines that fly to Phnom Penh?

The cheapest airlines flying from London to Phnom Penh are China Southern, Shenzhen Airlines and Air China.

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 July 2025.
See what other customers who have flown with Emirates, Singapore Airlines, andKLM to Cambodia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very Good
3,288 reviews
Check prices

Food

7.8

Crew

8.3

Comfort

8.0

Entertainment

8.2

Boarding

8.1

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.
Emirates
8.1
Very Good
3,288 reviews
Emirates
8.1
Very Good
3,288 reviews
Check prices

Food

7.8

Crew

8.3

Comfort

8.0

Entertainment

8.2

Boarding

8.1

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.
Singapore Airlines
8.1
Very Good
1,328 reviews
Emirates
8.1
Very Good
3,288 reviews
Check prices

Food

7.8

Crew

8.3

Comfort

8.0

Entertainment

8.2

Boarding

8.1

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.
KLM
7.8
Good
1,374 reviews
Emirates
8.1
Very Good
3,288 reviews
Check prices

Food

7.8

Crew

8.3

Comfort

8.0

Entertainment

8.2

Boarding

8.1

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.
Thai Airways
7.8
Good
339 reviews
Emirates
8.1
Very Good
3,288 reviews
Check prices

Food

7.8

Crew

8.3

Comfort

8.0

Entertainment

8.2

Boarding

8.1

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.
China Southern
7.6
Good
104 reviews
Emirates
8.1
Very Good
3,288 reviews
Check prices

Food

7.8

Crew

8.3

Comfort

8.0

Entertainment

8.2

Boarding

8.1

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2025

KTM - DXB

Lost 7 pieces of luggage and fly Dubai doesn’t seem to care.

FAQs about flying to Phnom Penh

Getting around Phnom Penh

Walking around the centre of Phnom Penh is an enjoyable way to get a feel for the city, but to get around the suburbs, travelling by tuk-tuk or taxi is advisable. You can rent motorbikes at a very cheap rate as well, if you are confident about dodging traffic (and don’t forget to rent a helmet as well). However, a more sedate form of local transport is the fleet of three-wheeled cycle rickshaws.

Getting from the Airport to the City

There will be taxis gathered directly outside the arrivals terminal once you have landed on your flight to Phnom Penh, and they should charge a flat rate to get you into the city. For an even cheaper ride, leave the airport and catch a tuk-tuk or one of the many motorcycles that will ferry those with less luggage into town. There is also a city bus that will take you straight to the Central Market.

  • What airport do you fly into for flights to Phnom Penh?

    Travelers will need to book flights to Pochentong (PNH) if they wish to fly to Phnom Penh. The Phnom Penh airport is 5.0 mi from the city center.

  • Can I find cheaper flights to Phnom Penh if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Phnom Penh on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Phnom Penh?

    Based on reviews from Cheapflights users, China Southern is rated the highest out of the airlines that fly to Phnom Penh.

  • What is the cheapest airport to fly to in Phnom Penh?

    Phnom Penh Pochentong is currently the cheapest airport to fly to in Phnom Penh. One-way flights to Phnom Penh Pochentong typically cost £33, while return flights cost around £78.

  • How much is a return flight to Phnom Penh?

    A return flight to Phnom Penh will typically cost around £120, however they can be found for as little as £104.

  • Where does the fastest flight to Phnom Penh depart from?

    For those looking to save time traveling to Phnom Penh, London offers the quickest one-way flight (17 hours 25 minutes).

  • Does Phnom Penh Pochentong have car hire?

    Yes. Those touching down at Phnom Penh Pochentong can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Phnom Penh Pochentong?

    Yes. Phnom Penh Pochentong has hotels nearby for those requiring accommodations. Chinese Guesthouse is the closest property to Phnom Penh Pochentong (0.0 mi away from Phnom Penh Pochentong).

See more FAQs

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When you search for this flight to Phnom Penh, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

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Cheapflights does show flights with no change fees to all users. To see these options for flights to Phnom Penh, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on Phnom Penh flights so you can book your flight when prices are ideal. Enable price alerts by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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