Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

LHR - PNH

$405 Find cheap flights from London 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 London to Phnom Penh departing on 8/6. 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 7/13
Sat 7/20

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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Phnom Penh, as well as popular online travel agencies
In the last 7 days travelers have searched 44,216,777 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from London 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 London 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
10:05 pm - 11:10 amLHR-PNH
31h 05m1 stop
12:15 pm - 7:10 pmPNH-LHR
37h 55m1 stop
$613Shenzhen Airlines
Find Deal
Sun, Oct 20 - Sat, Nov 9
7:15 pm - 3:20 pmLHR-PNH
38h 05m2 stops
3:50 pm - 5:15 pmPNH-LHR
32h 25m1 stop
$658China Southern
Find Deal
Sun, Oct 20 - Sat, Nov 9
10:05 pm - 11:10 amLHR-PNH
31h 05m1 stop
12:25 am - 3:55 pmPNH-LHR
22h 30m1 stop
Sun, Oct 20 - Fri, Nov 8
9:30 pm - 2:35 pmLHR-PNH
58h 05m2 stops
3:50 pm - 5:15 pmPNH-LHR
32h 25m1 stop
$837China Southern
Find Deal
Thu, Dec 5 - Sat, Dec 21
9:10 pm - 11:30 pmLHR-PNH
19h 20m1 stop
3:50 pm - 5:15 pmPNH-LHR
32h 25m1 stop
$839China Southern
Find Deal
Thu, Dec 5 - Sat, Dec 21
5:40 pm - 11:25 pmLHR-PNH
22h 45m1 stop
12:25 am - 5:55 pmPNH-LHR
24h 30m1 stop
$903Air China
Find Deal
Thu, Dec 5 - Fri, Dec 20
10:00 am - 6:15 pmLHR-PNH
26h 15m2 stops
11:05 am - 6:55 amPNH-LHR
25h 50m3 stops
Thu, Jun 27 - Tue, Jul 16
8:25 pm - 11:10 amLHR-PNH
32h 45m2 stops
12:15 am - 8:00 pmPNH-LHR
25h 45m1 stop
$1,086Air China
Find Deal
Wed, Jul 10 - Tue, Jul 16
10:25 am - 9:50 amLHR-PNH
16h 25m1 stop
6:30 pm - 5:35 amPNH-LHR
18h 05m1 stop
$1,102Malaysia Airlines
Find Deal
Sun, Oct 27 - Wed, Oct 30
11:25 am - 1:05 pmLHR-PNH
19h 40m1 stop
6:40 pm - 3:40 pmPNH-LHR
27h 00m1 stop
$1,651Singapore Airlines
Find Deal
Sun, Aug 11 - Sat, Aug 24

Flights from London to Phnom Penh - Travel Insights & Trends

Get data-powered insights and trends into flights from London 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 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.
For London to Phnom Penh, Monday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Phnom Penh back to London, the best deals are generally found on Saturday, with Thursday being the most expensive.

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 May, where tickets cost $745 on average. On the other hand, the most expensive months are December and August, where the average cost of tickets is $1,232 and $1,220 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 5 days before departure. For the absolute cheapest price, our data suggests you should book 75 days before departure.

Which airlines provide the cheapest flights from London 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 to Phnom Penh found on KAYAK was with China Southern for $556. Shenzhen Airlines proposed a round-trip connection from $613 and China Southern from $658.

Good to know

Low season

August

High season

November

Cheapest flight

$405
Best time to beat the crowds but there is an average 29% increase in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from London to Phnom Penh

When to book flights from London to Phnom Penh

Are your dates flexible? Find out the best times to travel from London to Phnom Penh based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 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 $405 for a one-way ticket and $613 for a round-trip.

  • Do I need a passport to fly between London and Phnom Penh?

    Yes, you'll most likely have to show a valid passport before boarding the plane in London and on arrival in Phnom Penh.

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

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

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

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between London 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 China Southern?

    The two airlines most popular with KAYAK users for flights from London to Phnom Penh are Singapore Airlines and China Southern. With an average price for the route of $1,142 and an overall rating of 8.2, Singapore Airlines is the most popular choice. China Southern is also a great choice for the route, with an average price of $733 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from London 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 to Phnom Penh.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London 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 is likely to change within 7 days, so travelers know whether to wait or book now.

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Phnom Penh with an airline and back to London with another airline. Booking your flights between London and PNH can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s 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 4 airlines serving from London 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 London 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 1417 reviews
8.2Entertainment
8.1Comfort
8.4Boarding
7.8Food
8.7Crew
Airline reviews

Leg room and flight sound insulation is very bad. They broke 3 of my bags with bad handling

8.0 ExcellentAnonymous, Jun 2024SFO - SIN
Read more about Singapore Airlines reviews

Leg room and flight sound insulation is very bad. They broke 3 of my bags with bad handling

plus: service and personal assistance minus: online check-in did not work

The Premium economy class is not the same as some other airlines because there are no economy seats on these planes. Basically you’re getting an economy seat that’s a little wider. The seats are not that much more comfortable. The service and food experience is similar to economy class on other Asian airlines. There aren’t enough toilets for the entire plane therefore we are forced to share the business class toilets that are closed off with curtains.

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

Had some luggage loading delays but it was still a good experience

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 .

No red vine, no whiskey, no vodka. No that I wanted all of them at once but still...

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.

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.

My case was missing a wheel on arrival Heathrow and the staff were unhelpful when i tried to get some compensation stating it was not sufficient damage, i only wish that they at some point have to deal with the same situation it put me in, maybe they would change their attitude but overall it was a good 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 ...

Ok, but legspace on MH0127 from Kul to Per was too small. It was not possible to tilt my seat which I don't understand because the seat in front of my could do it. So I didn't rest on the flight. Also, the crew was probably understaffed because it took very long time to take trash after the meal. Everything very different from the flight with Malaysian Airlines from London to KL.

Service / food has to be much better. Staff were not very attentive to requests. Requested for a second serve of coke and got a weird look back from the host! Was also told they don’t have extra water bottles when I requested for one before sleep! Dinner time food was very minimum and average.

An overnight Doha to KL. Great sleep, good service and tasty food in business class

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.

Delayed for 45 minutes. Don't know what's the issue. Other than that, food was not to my satisfaction. However it's okay.

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.

Book cheap flights from London to Phnom Penh

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.
8/6Tue
2 stops
32h 25mLHR-PNH
$405
8/7Wed
2 stops
20h 50mLHR-PNH
$432
8/7Wed
3 stops
30h 40mLHR-PNH
$472
8/28Wed
1 stopChina Southern
30h 30mLHR-PNH
$556
8/28Wed
1 stopMalaysia Airlines
17h 00mLHR-PNH
$599
10/1Tue
2 stopsQatar Airways
25h 15mLHR-PNH
$601
8/19Mon
2 stopsEmirates
41h 45mLHR-PNH
$604
8/19Mon
2 stopsEmirates
39h 50mLHR-PNH
$623
8/19Mon
1 stopChina Southern
20h 00mLHR-PNH
$705
7/2Tue
3 stopsQatar Airways
22h 15mLHR-PNH
$1,016

Search by stops

Search by airline

Search by price

Last minute flights from London 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.
6/17Mon
multi-stopShenzhen Airlines
31h 10mLHR-PNH
7/11Thu
multi-stopShenzhen Airlines
37h 45mPNH-LHR
$876
6/16Sun
multi-stopShenzhen Airlines
31h 05mLHR-PNH
7/9Tue
multi-stopShenzhen Airlines
37h 45mPNH-LHR
$895
6/16Sun
multi-stopShenzhen Airlines
31h 05mLHR-PNH
7/7Sun
multi-stopShenzhen Airlines
37h 35mPNH-LHR
$915
6/17Mon
multi-stopShenzhen Airlines
31h 10mLHR-PNH
7/12Fri
multi-stopShenzhen Airlines
37h 35mPNH-LHR
$927
6/16Sun
multi-stopShenzhen Airlines
31h 05mLHR-PNH
7/12Fri
multi-stopShenzhen Airlines
37h 35mPNH-LHR
$946
6/18Tue
multi-stopSWISS
32h 00mLHR-PNH
7/9Tue
multi-stopSWISS
25h 15mPNH-LHR
$1,868
6/18Tue
multi-stop
18h 35mLHR-PNH
7/9Tue
multi-stop
19h 45mPNH-LHR
$1,986
6/18Tue
multi-stopAustrian Airlines
21h 30mLHR-PNH
7/11Thu
multi-stopAustrian Airlines
27h 50mPNH-LHR
$2,330
6/18Tue
multi-stop
15h 00mLHR-PNH
7/9Tue
multi-stop
15h 45mPNH-LHR
$2,885
6/16Sun
multi-stopKLM
24h 50mLHR-PNH
7/11Thu
multi-stopKLM
20h 40mPNH-LHR
$3,383

Search by stops

Search by airline

Search by price

London - Phnom Penh Flights

Departure:

London (LHR)United Kingdom

Destination:

Phnom Penh (PNH)Cambodia

Return flight deals:

Phnom Penh - London

Cabin classes:

Browse origins:

  • Flights » 
  • London Heathrow Airport

Browse destinations:

  • Flights » 
  • Worldwide » 
  • Phnom Penh