Question 1

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

Accepted Answer

Our cheapest airline available from London to Phnom Penh is China Southern. Our recent data shows that you can find tickets from as low as £551 on this airline. Additional options worth looking into are Shenzhen Airlines and Air China, starting at £555 and £576 round-trip. China Southern is 15% cheaper than the average price of flights available within the next 90 days to this destination.

Question 2

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

Accepted Answer

One-way options have recently been found by users for as low as £318 on Shenzhen Airlines. Other airlines that offer cheap prices include China Eastern from £354 and Air China from £380 one-way.

Question 3

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

Accepted Answer

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Phnom Penh. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 4

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

Accepted Answer

Currently, September is the cheapest month in which you can book a flight from London to Phnom Penh (average of £689). Flying from London 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.

Question 5

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

Accepted Answer

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

Question 6

E

Accepted Answer

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.

Question 7

E

Accepted Answer

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).

Question 8

What are the most popular routes from London to Phnom Penh?

Accepted Answer

When deciding which route to take from London to Phnom Penh consider London Heathrow - Phnom Penh Pochentong, London Gatwick - Phnom Penh Pochentong or London Stansted - Phnom Penh Pochentong as they are the most popular.

Question 9

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

Accepted Answer

British Airways, Air China and Cathay Pacific are the most popular airlines when flying from London to Phnom Penh.

Question 10

Where are the most common stopover locations when flying from London to Phnom Penh?

Accepted Answer

London to Phnom Penh flights have a stopover in Guangzhou most often. Beijing follows Guangzhou in terms of the most common stopover location on London to Phnom Penh flights.

Question 11

Where are the least popular stopover locations for London to Phnom Penh flights?

Accepted Answer

Of the flights from London to Phnom Penh that have stopovers, the fewest flights stop in Singapore.

Question 12

What are some popular things to do or see while on a stopover in Guangzhou?

Accepted Answer

Baima Clothing Wholesale Market, Yide Lu, and Guangzhou Zoo are the most popular attractions in Guangzhou if you're in need of something to do during your stopover. Baima Clothing Wholesale Market, Yide Lu, and Guangzhou Zoo can be accessed by travelling approximately 17.3 mi, 19.5 mi, and 17.2 mi, respectively from Guangzhou Baiyun.

Question 13

What are some popular points of interest to see during a stopover in Beijing?

Accepted Answer

If you're on a stopover in Beijing and looking for things to do, consider visiting Summer Palace, Forbidden City, or The Antiquarium of the Palace Museum. Summer Palace, Forbidden City, and The Antiquarium of the Palace Museum can be visited by travelling about 17.3 mi, 15.1 mi, and 14.9 mi respectively from Beijing Capital.

Question 14

What is the cheapest day to fly round-trip from London to Phnom Penh?

Accepted Answer

Leaving on a Sunday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 16% on the overall cost on flights from London to Phnom Penh.

Question 15

How far in advance should I book a flight from London to Phnom Penh?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 54 days in advance, which can save you up to 16% on flights from London to Phnom Penh compared to booking the week you need them. Waiting 54 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £528. For sooner than that we have options available in the next 3 days from £809.

Question 16

What is the cheapest month to fly from London to Phnom Penh?

Accepted Answer

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, November can be a great choice for travel to Phnom Penh. Flights to Phnom Penh from London in November are about £653 on average during November, but can be found for as low as £406.

Question 17

What is the cheapest time of day to fly from LON to PNH?

Accepted Answer

When flying from London 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 36% versus a flight at midday.

Question 18

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

Accepted Answer

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. Booking flights from London to Pochentong (PNH) should be relatively easy as there are 0 daily inbound flights from London from 13 different airlines.

Question 19

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

Accepted Answer

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

Question 20

How can I find direct flights from London to Phnom Penh?

Accepted Answer

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

Question 21

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

Accepted Answer

Yes. Cheapflights offers flight deals from London 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.

Question 22

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

Accepted Answer

Deals for London to Phnom Penh flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Question 23

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

Accepted Answer

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 London.

Question 24

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

Accepted Answer

Certainly. Search results for flights to Phnom Penh from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Question 25

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

Accepted Answer

Yes! Start tracking prices for London to Phnom Penh flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

Round-trip from	£551
One-way from	£318
Popular in	December
Cheapest in	November
Average price	£797

Airline	Cheapest	Average	Flexibility	On-time
China Southern	Cheapest£358	Average£467	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Shenzhen Airlines	Cheapest£378	Average£451	FlexibilityNo cancel fee	On-time63%	Search Shenzhen Airlines flights
Air China	Cheapest£422	Average£492	FlexibilityNo cancel fee	On-time67%	Search Air China flights
China Eastern	Cheapest£506	Average£585	FlexibilityNo cancel fee	On-time62%	Search China Eastern flights
Etihad Airways	Cheapest£512	Average£589	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Singapore Airlines	Cheapest£586	Average£699	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Malaysia Airlines	Cheapest£589	Average£705	FlexibilityNo cancel fee	On-time67%	Search Malaysia Airlines flights
British Airways	Cheapest£640	Average£790	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Vietnam Airlines	Cheapest£650	Average£742	FlexibilityNo cancel fee	On-time81%	Search Vietnam Airlines flights
Cathay Pacific	Cheapest£666	Average£785	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights

Cheap flights from London to Phnom Penh from £318

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.

Cheapflights Tip: The best prices from London to Phnom Penh Pochentong are usually found in November or March, booked 62 days in advance, depart on a Monday or Saturday and return on a Sunday

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Cheapest flights from London to Phnom PenhExplore the most affordable flight options available from London to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Explore the most affordable flight options available from London to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

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Best time to book a flight from London to Phnom Penh

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How far ahead should I book a flight from London 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 27 June 2025.

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

What is the cheapest time of day to fly from LON to PNH?

Find hourly flight availability from London 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 11 July 2025.

What is the cheapest day to fly from London 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.

How much does it cost for a return flight from London to Phnom Penh?

Reviews of airlines servicing Phnom Penh

Check out reviews from past customers who have flown with Emirates, Singapore Airlines, andKLM from London 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.

Related info for your journey

Find useful and relevant information for your journey from London 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?

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

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

What are the most popular routes from London to Phnom Penh?

Where are the most common stopover locations when flying from London to Phnom Penh?

What are some popular things to do or see while on a stopover in Guangzhou?

What are some popular points of interest to see during a stopover in Beijing?

Where are the least popular stopover locations for London to Phnom Penh flights?

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

How can I find direct flights from London to Phnom Penh?

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

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

Browse thousands of different options on Cheapflights for your next trip

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Choose from the following airlines for your flight from London to Phnom Penh. Flights are based on user searches made on Cheapflights and were last updated on 11 July 2025.

Top 10 airlines flying from London to Phnom Penh

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

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Cheapest flights from London to Phnom Penh
Explore the most affordable flight options available from London to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.