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LHR - PNH

£343 Find cheap flights from London Heathrow Airport to Phnom Penh

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Phnom Penh departing on 28/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 1/6
Sat 8/6

Search hundreds of travel sites at once for deals on flights to Phnom Penh

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Phnom Penh.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Phnom Penh.
In the last 7 days, travellers have searched 43,740,974 times on KAYAK, and here's why:

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Cheap flight deals from Heathrow to Phnom Penh (LHR-PNH)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Heathrow to Phnom Penh that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
22:10 - 00:10LHR-PNH
20h 00m1 stop
16:35 - 18:30PNH-LHR
31h 55m2 stops
£438China Southern
Find Deal
Sun, 2 Jun - Tue, 11 Jun
22:10 - 14:30LHR-PNH
34h 20m1 stop
16:35 - 18:30PNH-LHR
31h 55m2 stops
£439China Southern
Find Deal
Sun, 2 Jun - Tue, 11 Jun
20:25 - 23:00LHR-PNH
20h 35m1 stop
00:15 - 17:45PNH-LHR
23h 30m1 stop
£543Air China
Find Deal
Fri, 27 Sep - Sat, 12 Oct
22:05 - 23:00LHR-PNH
18h 55m1 stop
00:15 - 17:45PNH-LHR
23h 30m1 stop
£566Air China
Find Deal
Mon, 30 Sep - Fri, 18 Oct
21:20 - 12:55LHR-PNH
33h 35m2 stops
14:00 - 18:40PNH-LHR
34h 40m2 stops
£667China Eastern
Find Deal
Wed, 29 May - Wed, 19 Jun
11:25 - 17:30LHR-PNH
24h 05m1 stop
14:05 - 07:45PNH-LHR
23h 40m1 stop
£691Singapore Airlines
Find Deal
Tue, 8 Oct - Mon, 21 Oct
21:20 - 14:05LHR-PNH
34h 45m3 stops
15:05 - 18:40PNH-LHR
33h 35m2 stops
£712China Eastern
Find Deal
Sun, 2 Jun - Tue, 11 Jun
09:25 - 13:05LHR-PNH
21h 40m1 stop
18:25 - 15:40PNH-LHR
27h 15m1 stop
£718Singapore Airlines
Find Deal
Sun, 26 May - Mon, 3 Jun
11:00 - 10:00LHR-PNH
17h 00m1 stop
18:20 - 05:55PNH-LHR
17h 35m1 stop
£758Malaysia Airlines
Find Deal
Tue, 1 Oct - Thu, 17 Oct
11:00 - 10:00LHR-PNH
17h 00m1 stop
11:10 - 05:35PNH-LHR
25h 25m1 stop
£803Malaysia Airlines
Find Deal
Sun, 6 Oct - Tue, 29 Oct

Flights from Heathrow to Phnom Penh - Travel Insights & Trends

Get data-powered insights and trends into flights from Heathrow to Phnom Penh to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from London Heathrow Airport to Phnom Penh?

The average price of all flights from London Heathrow Airport to Phnom Penh clicked on KAYAK for each day over the last 12 months.
When flying from London Heathrow Airport to Phnom Penh, you should consider leaving on a Monday and avoid Thursdays if you are looking for the best rates. For your return to London Heathrow Airport, you’ll find the best rates on Tuesdays and the most expensive ones on Saturdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London Heathrow Airport to Phnom Penh, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London Heathrow Airport to Phnom Penh is October, where tickets cost £673 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is £1,064 and £1,000 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London Heathrow Airport to Phnom Penh, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from London Heathrow Airport to Phnom Penh, you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 81 days before departure.

Which airlines provide the cheapest flights from London Heathrow Airport to Phnom Penh?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from London Heathrow Airport to Phnom Penh found on KAYAK was with Singapore Airlines for £405. China Southern proposed a return connection from £438 and Shenzhen Airlines from £469.

Good to know - Cheap tickets from London Heathrow Airport to Phnom Penh

Low season

August

High season

November

Cheapest flight

£343
Best time to beat the crowds but there is an average 19% increase in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from London Heathrow Airport to Phnom Penh

When to book flights from Heathrow to Phnom Penh

Are your dates flexible? Find out the best times to travel from Heathrow to Phnom Penh based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Phnom Penh flights

  • Where can I purchase Cambodian currency at Phnom Penh Airport?

    Cambodia Asia Bank (CAB) manages a foreign exchange kiosk near the Lost and Found office in the Arrivals Hall of the International Terminal, where you can purchase Cambodian banknotes for your trip. CAB, along with a host of other banks, provides several ATMs in the Arrivals Hall of the International Terminal for your convenience.

  • Can I hire a car at Phnom Penh Airport?

    Phnom Penh Airport does not have a car hire centre so you’ll have to depend on public transport, taxis or a hotel shuttle transfer to your destination. Royal Railway Cambodia has an express shuttle train from the airport to Phnom Penh Railway Station in the city. Travel time is about 30min with fares starting at 10,400 KHR (1.85 GBP) per person one-way. Otherwise, the No.3 City Bus or Express Bus can get you downtown.

  • Are there any accommodations at Phnom Penh Airport?

    No. Phnom Penh Airport does not have any onsite hotels, but there are a few in the area where you can find a place to stay. Dara Airport Hotel and Bali Resort & Apartment provide airport shuttle service at a surcharge, but Tian Yi International Hotel offers the service for free.

  • What are some cities/towns within reach from Phnom Penh Airport?

    Phnom Penh Airport is the largest in the capital and the principal international gateway to Cambodia. There are several provinces within striking distance from the airport, such as Pursat (115 miles northwest), Tbong Kmoum (86 miles northeast), and Takeo (50 miles south).

  • What is the cheapest flight from London Heathrow Airport to Phnom Penh?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Phnom Penh was £429 for a one-way ticket and £547 for a return.

  • Which airports will I be using when flying from London Heathrow Airport to Phnom Penh?

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at Phnom Penh, also known as Phnom Penh Pochentong.

  • Which aircraft models fly most regularly from London Heathrow Airport to Phnom Penh?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to Phnom Penh?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between London Heathrow Airport and Phnom Penh, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from London to Phnom Penh, Singapore Airlines or Thai Airways?

    The two airlines most popular with KAYAK users for flights from London to Phnom Penh are Singapore Airlines and Thai Airways. With an average price for the route of £846 and an overall rating of 8.2, Singapore Airlines is the most popular choice. Thai Airways is also a great choice for the route, with an average price of £1,040 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Phnom Penh?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Phnom Penh.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Phnom Penh?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Phnom Penh from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Phnom Penh?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Phnom Penh with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Phnom Penh?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Phnom Penh from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from London Heathrow Airport to Phnom Penh

  • Despite the lack of direct flights from London metro airports to Phnom Penh International Airport (PNH), formerly Pochentong International Airport, you can still enjoy one-stop service on Singapore Airlines and British Airways from London Heathrow Airport (LHR) and flights onboard JetStar Asia and Turkish Airlines out of London Gatwick Airport (LGW).
  • Gatwick Express and Heathrow Express trains remove the hassle from your airport commute with fast and efficient service to/from Central London. Gatwick Express trains from London Victoria Station depart about every 15min to London Gatwick Airport, while Heathrow Express trains offer a similar frequency of departures from London Paddington Station to London Heathrow Airport. Fare prices range from 19.90 GBP to 37 GBP for one-way or return tickets when you purchase them online.
  • Plaza Premium Lounge and Aspire Lounges at London Heathrow Airport offer a relaxing atmosphere with complimentary food and drinks before taking off on your trip abroad. Plaza Premium Lounges are located in the Departures Hall at Terminals 2 and 5, while Aspire Lounge has one location at Lounge D near Gate 9, Departures Hall at Terminal 5.
  • London Gatwick Airport’s North and South Terminals are separate buildings about a mile apart, but they are connected via an inter-terminal shuttle, which departs from the South Terminal Train Station. Journey time to North Terminal is about 2min, with shuttles running 24/7.
  • Whether you’re flying from London Heathrow or London Gatwick, download their respective airport apps to keep abreast of current flight information, including gate and terminal numbers and arrival times. You can also take advantage of special discounts on airport services, such as parking or Fast Track, in addition to offers by participating retail shops and restaurants.
See more tips

Top 5 airlines serving from Heathrow to Phnom Penh

 
See real verified KAYAK customer reviews for airlines flying from London to Phnom Penh. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Phnom Penh? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
Singapore AirlinesOverall score based on 1470 reviews
8.2Entertainment
8.4Boarding
8.7Crew
7.8Food
8.1Comfort
Airline reviews

My experience with Scoot is very good. Will have no issue flying with Scoot again.

8.0 ExcellentAnonymous, Apr 2024SIN - DPS
Read more about Singapore Airlines reviews

My experience with Scoot is very good. Will have no issue flying with Scoot again.

I commend the flight attendants on our SFO-SIN flight who went above and beyond to provide us with extra snacks and food. This type of service makes the flight experience personal and awesome.

When boarding, after business class should be premium economy, but economy class already lined-up at the gate blocking premium economy to board. Singapore airline crew should done a better job to organize this chaos :( Thank you.

Wonderful service, planes and interior in great condition, very pleasant experience

The premium economy seats were not that great. It could have been more premium than economy seats.

The singapore airline now compared before covid, I like the service before covid. SQ was the best of all airlines but now I am going to look for different airline if I am travelling in asia.

Flying with Singapore airlines is always excelllent - the crew are lovely and the food too is great. It’s my number 1 airline

Perfect experience from boarding through to leaving the flight, comfortable and personalised service from all staff, highly recommended

They were able to assist my elderly father and myself after not being able to check in to scoot. The counter service was phenomenal. They did what they could to get us on the next plane so we could catch our Connecting flight. Scoot closed early on us so we ended up missing our flight.

They close their counter so early. I had internet issues so I couldn’t check In online . I would have made the flight but their counter was closed 5 minutes before we arrived. No way of contacting them even though I had the confirmation number and tried to check in the night before on someone else’s phone. I tried calling their customer service with no pick up. Horrible experience, I’m very unhappy with them. I hope to never fly with them ever again. It costed me almost $900.

Extra seat belt across the chest 10 minutes before taking off and 15 minutes before landing seemed excessively safe.

The transfer from Domestic and International was a bit confusing but I am easily confused. I did not eat any food, but the food on the other leg was decent. It was nice they turned the lights off on the night flight. The plane was in good shape, but was a little cramped in economy and I am small. They gave me a customs form to fill out and nobody looked at it as I went through customs. Not a bad flight.

We are satisfied with the cabin crew serviceand the quality of meals served.

The aircraft was really old, the staff demotivated and the overall United airline service is horrible

Lunch Food was tasteful and had variety. Seat was comfortable. However, when I was reserving my seats during booking, the seat configuration showed was 3-3-3, but when I boarded it was a 2-4-2 configuration? Also during booking, I had also bought travel insurance together with my TG booking. However there was no confirmation of my purchase from Allianz and TG. After several emails with TG contact, sales, reservation and Allianz was i able to confirm my insurance purchase. When the policy was issued, the birth dates of me and my wife were wrongly stated and I had to go through another round of emails with Allianz to get it corrected. Otherwise any claims would be void! It was indeed not a very good booking experience!

Increase the number of available films, including variety. All other aspects were great.

Check in was a disaster. 90 minutes and only 2 economy check in desks open. Had to rush to catch the flight.

I couldnt go on this flight and lost all my money over 1,000 UK Pounds as my visa to Myanmar was not accepted :(

food poor i said chiken i got pack a pow breakfast lousey .job to explain wot it was ...

Cons: "I got billed a higher price than I was quoted."

We bought the business class tickets. The check-in staff and onboard crew were excellent, providing commendable service throughout. However, it was disappointing to find that China Southern Airlines does not have a lounge at SFO. Instead, passengers were provided with a $35 per person food voucher, which fell short of expectations. Furthermore, the quality of the onboard food left much to be desired, marking a significant decline compared to our previous flight experience in 2019, prior to the pandemic.

Wuhan - Dubai. Old plane: 1. Only USB charger. No power outlet to plug in.. 2. Super narrow seat layout 3. Toilet cover consistently fell down and hit my back when sitting on it.. :( 4. Entertainment system touch screen not sensitive, and need to press hard or use finger tips to hit. Crew were very nice and accommodating though.

1. I got very poor check in experience with the counter lady . This is the first airline I ever experienced that no combine check in weight allow . Even we have 4 of us but weight counter by piece . So we wasted lot of time argue and repack . This is super crazy 2. Next I left my Samsung tablet on the plane . And I started to escalate and finally spoke to southern airline lost and found in Malaysia and the amazing answer she give is : system nothing found and please try to call southern airline in china 🧐 . I have been flying many other airlines but this is my first encounterment with such irresponsible airline response and no empathy given to customer . My feeling is nobody bother whether how customer like me feel and I’m just too small for the management to take note .

During flight, some passengers perform stomping leg exercises which disturb the comfort (I.e. sleep) of other passengers.

No good but was short flight. Both of our China Southern flights were on time. No surprises.

The flight was okay it was the kayak customer service that was poor, I have been trying to change my name on my flight ticket 3 days before my flight and nothing got done about it even tho I messaged so many times and phoned, all I got in return was that is was being processed and still to this day nothing has been done about it, I think it’s disgusting and un needed stress to the trip.

The food was perfect. The boarding process is a bit long. Given the late boarding time, I felt very tired by the time I was seated.

Quality flight from start to finish. Customer service is evidently very important to this company. The staff really exceeded expectations.

Traveling with the Chinese airlines , their service superior to the US Airlines , they are much more friendly and the seats are comfortable , In the past I flew with United , now ,United Airline will become history for me .

Pros: "Yes, seats were very comfortable and crew members were extremely helpful"
Cons: "Everything was excellent."

chaos boarding. Crew in business class seemed short staffed and lacking in attention to details initially, but did improve during flight.

The cabin was quite noisy as there were lots of children travelling for the school holidays. Found the selection of movies limited.

Delayed, not enough information. Had to ask for refreshments, crew could have been more proactive

The best so far coz this time it was all male steward on the economy cluster. They were polite, efficient & genuinely courteous. They do not judge you when you ask for more food & peanuts.

My first course flight (Aor-Kul) was cancelled in the morning, and they asked me to board the night flight hence I need to transit overnight for the 2nd flight (Kul-Myy) that supposed to be on the same day. The overnight stay was not provided, (I'm traveling with my spouse, a daughter (5 y.o.) and an infant (2 months old). Hence I booked Sama Sama Hotel at my own expense (fortunately using my enrich miles points). Other than this issue, all services is good.

My experience with the flight was okay. My experience checking in was absolutely terrible. I was told I needed to change my e-ticket number to check in because I missed my flight in PDX. Even when shown the itinerary, they didn't budge and sent me to KLM across the airport. KLM wasn't open until 8pm and my flight was at 7:30pm. Nobody made accommodations in any way to get me to KUL. To add insult to injury, they rescheduled my flight to the very next day, creating a very long layover and did not offer any hotel stay. After this, even worse, I found out later they delayed the first 7:30pm flight to 9:10pm. Meaning, I could have still boarded but they refused to even try to get me on the plane. As a result, I missed a day of work and lost pay for the day. Also, when I went to get my luggage, it wasn't there. It was STILL in Singapore. They had from 5:30pm to 5am to get my luggage onto the plane and they still couldn't get that right. This is the worst experience I've had flying anywhere in the past decade I've been travelling.

Entertainment system was too old, crew were unorganised during boarding

No recognition for one World Emerald member. I got row 1 in business class and it was pathetic. No leg space, cramped space, less recline

Legs space in the business class cabin is too small and pillow is dirty!

Elderly individual shud be given priority to board the plane together with passengers with children and disabled. Otherwise things are OK.

The flight was delayed for almost 5 hours, but I understand that it was not up to the company, however how they could handle the situation better, they never apologized for that delay, moreover despite passengers being there for 7 hours only thing they did was to give a bowl of instant noodles, afterwards on the plane tiny snacks, people were there starting from lunch time and we’ve arrived to destination at almost midnight

Cons: "Everything was great. Very nice and friendly crew, clean plane, great food. Excellent overall"
Pros: "Friendly crew and helpful staff"
Cons: "Missed connection from PEK to XIY due to delayed arrival and early departure. From XIY to PEK, booked and confirmed 11 departure, changed to 12:30 without notification or explaination. Rushed connections at PEK, pretty much ran from the minute left plan to another terminal, through custom, through all the health check points, security check. Just keep the fights on time and keep the original schedules, not arbitrarily change them."
Pros: "The crew was accommodating during the flight but spoke very little English and could not help with information on connecting flight."
Cons: "We missed our connecting flight due to a delay and the airline would not let us through because we could have made our second flight...."
Cons: "Even for business class there is no TV screen on each seat. Just one small TV screen on the ceiling for a few rows to share. It would be much better with TV screen on each seat. I was sitting in the first row business class and the air hostess skipped me and didn’t give me a slipper. She gave me a used slipper at the end only without a packet. This is unprofessional to treat a business class passenger"
Cons: "Seats are narrow, leg room limited, and food is minimal."
Pros: "The crew was okay. The seating was great on all except for one leg."
Cons: "On one leg, it must have been an older plane, because the business class seats barely reclined."
Pros: "Crew was great and was happy to get gluten free food i could eat"
Cons: "Not lose my bags :("
Pros: "Beautiful new plane, professional crew, totally decent food."
Cons: "Economy for 13 hours is always a bit rough, but no more so on Air China than any other airline. And the price was so much lower."
Pros: "Very frustrated experience. Air China, air Canada, budget air, all push responsibilities away. Budget air got my name wrong, too, which would have caused me to not be able to get on the original flight from China anyways."
Cons: "Still I have not been able to get someone to fix my problem for me although I was promised that I could postpone my return flight by one day because of the delay at Victoria airport. Ended up having to buy a return ticket by myself."

Book cheap flights from London to Phnom Penh

Cheapest flights to Phnom Penh from London found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to Phnom Penh found on KAYAK in the last 72 hours.
28/8Wed
2 stops
20h 25mLHR-PNH
£343
16/5Thu
3 stops
45h 45mLHR-PNH
£367
16/6Sun
2 stops
27h 30mLHR-PNH
£383
12/5Sun
1 stopSingapore Airlines
26h 05mLHR-PNH
£405
13/5Mon
1 stopSingapore Airlines
19h 40mLHR-PNH
£411
12/5Sun
1 stopChina Southern
34h 20mLHR-PNH
£416
18/10Fri
1 stopMalaysia Airlines
17h 00mLHR-PNH
£476
28/8Wed
1 stopMalaysia Airlines
17h 00mLHR-PNH
£478
14/7Sun
1 stopThai Airways
14h 20mLHR-PNH
£697
13/5Mon
1 stopThai Airways
14h 20mLHR-PNH
£1,689

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Last minute flights from Heathrow to Phnom Penh

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to Phnom Penh that are departing in the next 10 days.
7/5Tue
multi-stopChina Southern
20h 00mLHR-PNH
11/6Tue
multi-stopChina Southern
32h 55mPNH-LHR
£607
3/5Fri
multi-stopChina Southern
30h 30mLHR-PNH
20/5Mon
multi-stopChina Southern
37h 05mPNH-LHR
£703
3/5Fri
multi-stop
30h 30mLHR-PNH
19/5Sun
multi-stop
23h 30mPNH-LHR
£728
7/5Tue
multi-stopChina Southern
34h 20mLHR-PNH
11/6Tue
multi-stopChina Southern
33h 35mPNH-LHR
£730
3/5Fri
multi-stop
28h 40mLHR-PNH
20/5Mon
multi-stop
33h 15mPNH-LHR
£732
7/5Tue
multi-stopChina Eastern
19h 55mLHR-PNH
10/6Mon
multi-stopChina Eastern
24h 30mPNH-LHR
£910
6/5Mon
multi-stopShenzhen Airlines
31h 10mLHR-PNH
28/5Tue
multi-stopShenzhen Airlines
37h 45mPNH-LHR
£1,086
5/5Sun
multi-stopShenzhen Airlines
31h 05mLHR-PNH
28/5Tue
multi-stopShenzhen Airlines
37h 45mPNH-LHR
£1,101
7/5Tue
multi-stopVietnam Airlines
22h 00mLHR-PNH
11/6Tue
multi-stopVietnam Airlines
29h 10mPNH-LHR
£1,191
3/5Fri
multi-stopVietnam Airlines
36h 00mLHR-PNH
20/5Mon
multi-stopVietnam Airlines
22h 45mPNH-LHR
£1,449

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London Heathrow Airport - Phnom Penh Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Destination:

Phnom Penh (PNH)Cambodia

Return flight deals:

Phnom Penh - London Heathrow Airport

Cabin classes:

Browse destinations: