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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PNH
12 Oct — 19 Oct1
Return
1 adult
Economy
Return
1 adult, Economy
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 12 September 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 12 September 2025.
Mon 13/1009:30LHR - PNH
1 stop15h 25mEtihad Airways
Mon 20/1008:30PNH - LHR
1 stop16h 15mEtihad Airways
Deal found 11/9£482
Thu 20/1108:50LHR - PNH
1 stop14h 40mEtihad Airways
Fri 5/1207:55PNH - LHR
1 stop17h 15mEtihad Airways
Deal found 10/9£489
Mon 24/1113:55LHR - PNH
1 stop21h 30mEtihad Airways
Mon 8/1207:55PNH - LHR
1 stop29h 45mEtihad Airways
Deal found 10/9£491
Wed 24/1220:55LHR - PNH
1 stop26h 35mEtihad Airways
Tue 20/119:50PNH - LHR
1 stop17h 50mEtihad Airways
Deal found 11/9£496
Mon 17/1120:55LHR - PNH
1 stop14h 30mEtihad Airways
Tue 2/1207:55PNH - LHR
1 stop37h 35mEtihad Airways
Deal found 10/9£498
Tue 7/1020:55LHR - PNH
1 stop28h 00mEtihad Airways
Tue 21/1008:30PNH - LHR
1 stop34h 15mEtihad Airways
Deal found 10/9£504
Sun 30/1119:20LHR - PNH
1 stop28h 10mEtihad Airways
Mon 15/1207:55PNH - LHR
1 stop37h 35mEtihad Airways
Deal found 10/9£506
Fri 28/1111:05STN - PNH
2 stops24h 20mMultiple Airlines
Tue 9/1219:50PNH - STN
3 stops29h 00mMultiple Airlines
Deal found 10/9£653
Mon 13/1006:20LGW - PNH
2 stops18h 35mMultiple Airlines
Mon 20/1008:30PNH - LGW
2 stops32h 20mMultiple Airlines
Deal found 11/9£658
Fri 28/1114:40LTN - PNH
2 stops20h 45mMultiple Airlines
Tue 9/1207:55PNH - LTN
2 stops20h 55mMultiple Airlines
Deal found 10/9£675
Tue 18/1117:50LTN - PNH
3 stops41h 35mMultiple Airlines
Tue 2/1207:55PNH - LTN
2 stops20h 55mMultiple Airlines
Deal found 10/9£676
Fri 28/1114:35LGW - PNH
2 stops20h 50mMultiple Airlines
Tue 9/1219:50PNH - LGW
3 stops26h 50mMultiple Airlines
Deal found 10/9£682
Best flights from London to Phnom Penh
Discover carefully curated flight deals from London to Phnom Penh that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2025.
Mon 24/1119:20LHR - PNH
1 stop16h 05mEtihad Airways
Mon 8/1207:55PNH - LHR
1 stop29h 45mEtihad Airways
Deal found 12/9£498
Fri 28/1111:05STN - PNH
2 stops24h 20mMultiple Airlines
Tue 9/1219:50PNH - STN
3 stops29h 00mMultiple Airlines
Deal found 10/9£653
Mon 23/208:50LHR - PNH
1 stop14h 40mEtihad Airways
Mon 9/307:55PNH - LHR
1 stop37h 35mEtihad Airways
Deal found 12/9£500
Thu 19/208:50LHR - PNH
1 stop14h 40mEtihad Airways
Fri 13/307:55PNH - LHR
1 stop35h 10mEtihad Airways
Deal found 11/9£506
Tue 7/1020:55LHR - PNH
1 stop28h 00mEtihad Airways
Tue 21/1008:30PNH - LHR
1 stop16h 15mEtihad Airways
Deal found 12/9£511
Fri 28/1114:40LTN - PNH
2 stops20h 45mMultiple Airlines
Tue 9/1207:55PNH - LTN
2 stops20h 55mMultiple Airlines
Deal found 10/9£675
Fri 6/208:50LHR - PNH
1 stop26h 35mEtihad Airways
Mon 23/207:55PNH - LHR
1 stop35h 10mEtihad Airways
Deal found 11/9£517
Fri 28/1112:45LGW - PNH
3 stops22h 40mMultiple Airlines
Tue 9/1219:50PNH - LGW
3 stops26h 50mMultiple Airlines
Deal found 10/9£690
Thu 25/1208:50LHR - PNH
1 stop14h 40mEtihad Airways
Tue 20/107:55PNH - LHR
1 stop17h 15mEtihad Airways
Deal found 11/9£531
Tue 18/1119:40LGW - PNH
3 stops39h 45mMultiple Airlines
Tue 2/1219:50PNH - LGW
2 stops21h 55mMultiple Airlines
Deal found 10/9£691
Sat 4/1021:45LHR - PNH
1 stop27h 10mEtihad Airways
Tue 2/1219:50PNH - LHR
1 stop29h 20mEtihad Airways
Deal found 11/9£535
Tue 18/1120:25STN - PNH
3 stops39h 00mMultiple Airlines
Tue 2/1207:55PNH - STN
2 stops21h 45mMultiple Airlines
Deal found 10/9£692
Last-minute flights from London to Phnom Penh
Discover last-minute flight deals from London to Phnom Penh. Data last updated 12 September 2025 and is based on user searches.
Thu 2/1014:45LHR - PNH
1 stop34h 10mEtihad Airways
Tue 2/1207:55PNH - LHR
1 stop37h 35mEtihad Airways
Deal found 11/9£550
Sat 4/1014:45LHR - PNH
1 stop34h 10mEtihad Airways
Tue 4/1119:50PNH - LHR
1 stop23h 15mEtihad Airways
Deal found 10/9£529
Sat 4/1021:45LHR - PNH
1 stop27h 10mEtihad Airways
Tue 2/1219:50PNH - LHR
1 stop29h 20mEtihad Airways
Deal found 11/9£535
Sat 4/1014:45LHR - PNH
1 stop34h 10mEtihad Airways
Mon 1/1207:55PNH - LHR
1 stop17h 15mEtihad Airways
Deal found 11/9£570
Sun 5/1009:30LHR - PNH
1 stop15h 25mEtihad Airways
Tue 2/1207:55PNH - LHR
1 stop35h 10mEtihad Airways
Deal found 11/9£515
Tue 7/1020:55LHR - PNH
1 stop28h 00mEtihad Airways
Tue 21/1008:30PNH - LHR
1 stop34h 15mEtihad Airways
Deal found 10/9£504
Sat 11/1021:45LHR - PNH
1 stop27h 10mEtihad Airways
Sat 18/1008:30PNH - LHR
1 stop16h 15mEtihad Airways
Deal found 11/9£538
Sat 11/1021:50LGW - PNH
2 stops27h 05mMultiple Airlines
Sat 18/1008:30PNH - LGW
2 stops20h 25mMultiple Airlines
Deal found 11/9£712
Sat 11/1015:45STN - PNH
2 stops33h 10mMultiple Airlines
Sat 18/1008:30PNH - STN
2 stops28h 20mMultiple Airlines
Deal found 11/9£726
Mon 13/1009:30LHR - PNH
1 stop15h 25mEtihad Airways
Mon 20/1008:30PNH - LHR
1 stop16h 15mEtihad Airways
Deal found 11/9£482
Mon 13/1006:20LGW - PNH
2 stops18h 35mMultiple Airlines
Mon 20/1008:30PNH - LGW
2 stops32h 20mMultiple Airlines
Deal found 11/9£658
Fri 31/1013:55LHR - PNH
1 stop21h 30mEtihad Airways
Fri 14/1107:55PNH - LHR
1 stop29h 45mEtihad Airways
Deal found 12/9£536
One-way flights from London to Phnom Penh
Search for one-way flight options from London to Phnom Penh. Find affordable one-way fares based on user searches. Data last updated 12 September 2025.
Sun 4/118:20STN - PNH
2 stops41h 05mMultiple Airlines
Deal found 11/9£375
Thu 9/1015:35LGW - PNH
2 stops33h 20mMultiple Airlines
Deal found 11/9£377
Fri 5/1212:30STN - PNH
3 stops22h 55mMultiple Airlines
Deal found 11/9£379
Wed 8/1015:05LHR - PNH
3 stops57h 50mMultiple Airlines
Deal found 11/9£381
Mon 6/1021:50STN - PNH
3 stops51h 05mMultiple Airlines
Deal found 10/9£382
Sat 15/1122:10STN - PNH
3 stops49h 20mMultiple Airlines
Deal found 10/9£383
Thu 9/1013:45LCY - PNH
2 stops35h 10mMultiple Airlines
Deal found 11/9£384
Fri 21/1105:50LTN - PNH
3 stops29h 35mMultiple Airlines
Deal found 11/9£385
Fri 16/122:05STN - PNH
3 stops49h 25mMultiple Airlines
Deal found 10/9£385
Sun 1/320:10LGW - PNH
2 stops27h 20mMultiple Airlines
Deal found 11/9£387
Tue 7/1011:50STN - PNH
3 stops37h 05mMultiple Airlines
Deal found 10/9£388
Fri 5/1221:45LGW - PNH
3 stops49h 45mMultiple Airlines
Deal found 11/9£388
Cheapflights Fare Finder
Customise your flight search to find flights from London 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 12 September 2025.
Use the filters below to find and compare flights from London to Phnom Penh that are best for you.
Fly from
London
Fly to
Phnom Penh
Route
Depart
Return
Price
LondonPhnom Penh
LHR - PNH
LHRPNH
London Heathrow
Mon 24/11
19:20-18:25
1 stop16h 05m
Phnom Penh Pochentong
Mon 8/12
07:55-06:40
1 stop29h 45m
£498
LondonPhnom Penh
LHR - PNH
LHRPNH
London Heathrow
Mon 23/2
08:50-06:30
1 stop14h 40m
Phnom Penh Pochentong
Mon 9/3
07:55-14:30
1 stop37h 35m
£500
LondonPhnom Penh
LHR - PNH
LHRPNH
London Heathrow
Thu 19/2
08:50-06:30
1 stop14h 40m
Phnom Penh Pochentong
Fri 13/3
07:55-12:05
1 stop35h 10m
£506
LondonPhnom Penh
LHR - PNH
LHRPNH
London Heathrow
Tue 7/10
20:55-06:55
1 stop28h 00m
Phnom Penh Pochentong
Tue 21/10
08:30-18:45
1 stop16h 15m
£511
LondonPhnom Penh
LHR - PNH
LHRPNH
London Heathrow
Fri 6/2
08:50-18:25
1 stop26h 35m
Phnom Penh Pochentong
Mon 23/2
07:55-12:05
1 stop35h 10m
£517
LondonPhnom Penh
LHR - PNH
LHRPNH
London Heathrow
Thu 25/12
08:50-06:30
1 stop14h 40m
Phnom Penh Pochentong
Tue 20/1
07:55-18:10
1 stop17h 15m
£531
LondonPhnom Penh
LHR - PNH
LHRPNH
London Heathrow
Sat 4/10
21:45-06:55
1 stop27h 10m
Phnom Penh Pochentong
Tue 2/12
19:50-18:10
1 stop29h 20m
£535
LondonPhnom Penh
LHR - PNH
LHRPNH
London Heathrow
Fri 13/2
08:50-18:25
1 stop26h 35m
Phnom Penh Pochentong
Fri 27/2
07:55-12:05
1 stop35h 10m
£543
LondonPhnom Penh
LHR - PNH
LHRPNH
London Heathrow
Sat 4/10
14:45-06:55
1 stop34h 10m
Phnom Penh Pochentong
Tue 4/11
19:50-12:05
1 stop23h 15m
£550
LondonPhnom Penh
LHR - PNH
LHRPNH
London Heathrow
Thu 2/10
14:45-06:55
1 stop34h 10m
Phnom Penh Pochentong
Tue 2/12
07:55-14:30
1 stop37h 35m
£550
Flights are sorted by cheapest return flights first.
Deals found on 11/9
Showing 1-10 of 60 results
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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
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 29 August 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 £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.
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 12 September 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 35% 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 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.
How much does it cost for a return flight from London to Phnom Penh?
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 21% of one-stop itineraries from London to Phnom Penh on Cheapflights.
What’s the cheapest stopover airport for flights from London to Phnom Penh?
Average return fare for one-stop flights from London to Phnom Penh, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Guangzhou (CAN) is the most affordable one-stop option, with an average return flight price of £474.
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 12 September 2025.
Check out reviews from past customers who have flown with Singapore Airlines, Thai Airways, andChina Southern 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.
How long is the flight from London to Phnom Penh?
For as low as £498, Etihad Airways can have you in Phnom Penh from London in 16h 05m. London and Phnom Penh are separated by a distance of 6232 mi.
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 £360 on this airline. Additional options worth looking into are Shenzhen Airlines and Air China, starting at £379 and £403 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 Heathrow - Phnom Penh Pochentong, London City - Phnom Penh Pochentong or London Gatwick - 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. Beijing 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 Beijing?
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.
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 Singapore.
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 £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.
Browse thousands of different options on Cheapflights for your next trip
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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 12 September 2025.
Browse through other flights departing from London. Flights are based on user searches made on Cheapflights and were last updated on 12 September 2025.
Explore flights to Phnom Penh departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 12 September 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 12 September 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.
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