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Cheap flights from the United Kingdom to Phnom Penh

LHR — PNH
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

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 14 November 2025.

Popular in

July

Cheapest in

November

Average price

£541
Highest demand for flights based on searches. 15% potential increase in price (£90 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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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, November is the cheapest month in which you can book a flight from United Kingdom to Phnom Penh (average of £360). Flying from United Kingdom to Phnom Penh in July is currently the most expensive (average of £699). 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 14 November 2025.

A simple way to save on the total cost of your ticket is to fly from United Kingdom to Phnom Penh in the evening. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight at midday.

What is the cheapest day to fly from United Kingdom to Phnom Penh?

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

Travellers seeking maximum savings on their United Kingdom 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.

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 14 November 2025.
Check out reviews from past customers who have flown with Singapore Airlines, Thai Airways, andChina Southern 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.
Singapore Airlines
8.1
Very Good
1,401 reviews
Check prices

Comfort

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.8

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Singapore Airlines
8.1
Very Good
1,401 reviews
Singapore Airlines
8.1
Very Good
1,401 reviews
Check prices

Comfort

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.8

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Thai Airways
7.8
Good
361 reviews
Singapore Airlines
8.1
Very Good
1,401 reviews
Check prices

Comfort

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.8

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
China Southern
7.5
Good
119 reviews
Singapore Airlines
8.1
Very Good
1,401 reviews
Check prices

Comfort

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.8

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Etihad Airways
7.4
Good
1,296 reviews
Singapore Airlines
8.1
Very Good
1,401 reviews
Check prices

Comfort

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.8

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Air China
7.1
Good
121 reviews
Singapore Airlines
8.1
Very Good
1,401 reviews
Check prices

Comfort

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.8

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

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 most popular routes from United Kingdom to Phnom Penh?

    While some choose either London City - Phnom Penh Pochentong or London Heathrow - Phnom Penh Pochentong, London Gatwick - 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, November is the cheapest month in which you can book a flight from United Kingdom to Phnom Penh (average of £360). Flying from United Kingdom to Phnom Penh in July is currently the most expensive (average of £699). 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 14 November 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£370Average£577FlexibilityNo cancel feeOn-time69%
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Shenzhen AirlinesCheapest£390Average£464FlexibilityNo cancel feeOn-time63%
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Air ChinaCheapest£407Average£510FlexibilityNo cancel feeOn-time67%
Search Air China flights
Qatar AirwaysCheapest£473Average£795FlexibilityNo cancel feeOn-time68%
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China EasternCheapest£523Average£604FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Etihad AirwaysCheapest£524Average£671FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Singapore AirlinesCheapest£577Average£728FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Malaysia AirlinesCheapest£608Average£720FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
British AirwaysCheapest£629Average£808FlexibilityNo cancel feeOn-time70%
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EmiratesCheapest£667Average£849FlexibilityNo cancel feeOn-time75%
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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