Cheapflights Tip: The best prices from London to Phnom Penh Pochentong are usually found in November or September, booked 79 days in advance, depart on a Monday or Saturday and return on a Sunday
Cheap flight deals from London to Phnom Penh
Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 15 October 2025.
Popular in
July
Cheapest in
November
Average price
£603
Highest demand for flights based on searches. 14% potential increase in price (£87 potential increase over avg. return price).
Best time to book a flight from London to Phnom Penh
Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from London 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 London to Phnom Penh
Prices
More
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 10 October 2025.
Booking 79 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.
What is the cheapest month to book a flight from London to Phnom Penh?
Currently, September is the cheapest month in which you can book a flight from London to Phnom Penh (average of £366). Flying from London to Phnom Penh in July is currently the most expensive (average of £691). 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 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 15 October 2025.
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 25% versus a flight at midday.
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.
Travellers seeking maximum savings on their London to Phnom Penh flight should consider departing on Monday evenings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
What’s the top stopover airport for flights from London to Phnom Penh?
Share of one-stop return flights from London to Phnom Penh chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Guangzhou (CAN) – chosen by Cheapflights users on 20% of one-stop itineraries from London to Phnom Penh on Cheapflights.
What’s the fastest stopover option from London to Phnom Penh?
Shortest average travel time for one-stop one-way flights from London to Phnom Penh, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Bangkok (BKK) have the shortest average one-way travel time for one-stop routes: 14h 47m.
What’s the fastest stopover option from London to Phnom Penh?
Shortest average travel time for one-stop one-way flights from London to Phnom Penh, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Bangkok (BKK) have the shortest average one-way travel time for one-stop routes: 14h 47m.
Which airport typically offers the quickest stopover for flights from London to Phnom Penh?
Average stopover duration for one-stop one-way flights from London to Phnom Penh, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Doha (DOH) offer the fastest connection on this route, with an average stopover time of 1h 31m.
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 15 October 2025.
Check out reviews from past customers who have flown with Singapore Airlines, Thai Airways, andEtihad Airways 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.
Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
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?
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.
What are the cheapest airlines flying from London to Phnom Penh round-trip?
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 £366 on this airline. Additional options worth looking into are Shenzhen Airlines and Air China, starting at £386 and £407 round-trip. China Southern is 45% cheaper than the average price of flights available within the next 90 days to this destination.
What are the most popular routes from London to Phnom Penh?
When deciding which route to take from London to Phnom Penh consider London Gatwick - Phnom Penh Pochentong, London City - Phnom Penh Pochentong or London Heathrow - Phnom Penh Pochentong as they are the most popular.
Where are the most common stopover locations when flying from London to Phnom Penh?
London to Phnom Penh flights have a stopover in Guangzhou most often. Singapore follows Guangzhou in terms of the most common stopover location on London to Phnom Penh flights.
What are some popular things to do or see while on a stopover in Guangzhou?
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.
What are some popular points of interest to see during a stopover in Singapore?
If you're on a stopover in Singapore and looking for things to do, consider visiting Sentosa, Merlion, or Universal Studios Singapore. Sentosa, Merlion, and Universal Studios Singapore can be visited by travelling about 13.4 mi, 10.5 mi, and 13.4 mi respectively from Singapore Changi. Travellers can rent a car at Singapore Changi for an average daily rate of £65 to make sightseeing during their stopover a little easier.
Where are the least popular stopover locations for London to Phnom Penh flights?
Of the flights from London to Phnom Penh that have stopovers, the fewest flights stop in Beijing.
Can I find deals for flights from London to Phnom Penh that include hotel bookings?
Yes. In addition to deals on London to Phnom Penh flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Phnom Penh?
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.
Can I find deals for business class flights from London to Phnom Penh?
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.
What is the cheapest month to book a flight from London to Phnom Penh?
Currently, September is the cheapest month in which you can book a flight from London to Phnom Penh (average of £366). Flying from London to Phnom Penh in July is currently the most expensive (average of £691). 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.
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.
Fly from London to Phnom Penh on these airlines
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 15 October 2025.
Explore flights to Phnom Penh departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 15 October 2025.
Discover the top 10 airlines that operate flights from London 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 15 October 2025.
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 London to Phnom Penh?
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.
Why should you use Cheapflights to find cheap flight tickets from London 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 London.
Can Cheapflights find flights from London to Phnom Penh with no change fees?
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.
Can Cheapflights notify me if prices for flights from London to Phnom Penh become cheaper?
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.
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.