£397 Find Cheap Flights from London Heathrow Airport to Cambodia

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 Cambodia departing on 17/2. 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
1 adult, Economy

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Cheap Flights from Heathrow to Cambodia

Cheapest return prices found by our users on KAYAK in the last 72 hours
Phnom Penh
Phnom Penh1 stop£547
Siem Reap
Siem Reap2 stops£541
Phnom Penh
Phnom Penh1 stop£547
Siem Reap
Siem Reap2 stops£541

Book Cheap Heathrow to Cambodia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Cambodia 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 for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Cambodia

Thu, 13 Nov - Mon, 24 Nov
Etihad Airways Logo
08:50 - 06:30LHR-PNH
14h 40m1 stop
Etihad Airways Logo
07:55 - 18:10PNH-LHR
17h 15m1 stop
£547Etihad Airways
Find Deal
Mon, 3 Nov - Mon, 17 Nov
Etihad Airways Logo
13:55 - 18:25LHR-PNH
21h 30m1 stop
Etihad Airways Logo
07:55 - 06:40PNH-LHR
29h 45m1 stop
£551Etihad Airways
Find Deal
Mon, 24 Nov - Mon, 8 Dec
Etihad Airways Logo
20:55 - 18:25LHR-PNH
14h 30m1 stop
Etihad Airways Logo
07:55 - 06:40PNH-LHR
29h 45m1 stop
£555Etihad Airways
Find Deal
Mon, 24 Nov - Mon, 8 Dec
Etihad Airways Logo
08:50 - 18:25LHR-PNH
26h 35m1 stop
Etihad Airways Logo
07:55 - 06:40PNH-LHR
29h 45m1 stop
£556Etihad Airways
Find Deal
Mon, 24 Nov - Mon, 8 Dec
Etihad Airways Logo
20:55 - 18:25LHR-PNH
14h 30m1 stop
Etihad Airways Logo
07:55 - 06:40PNH-LHR
29h 45m1 stop
£557Etihad Airways
Find Deal
Mon, 3 Nov - Mon, 17 Nov
Etihad Airways Logo
20:55 - 18:25LHR-PNH
14h 30m1 stop
Etihad Airways Logo
07:55 - 12:05PNH-LHR
35h 10m1 stop
£559Etihad Airways
Find Deal
Mon, 23 Feb - Tue, 10 Mar
Etihad Airways Logo
08:50 - 18:25LHR-PNH
26h 35m1 stop
Etihad Airways Logo
07:55 - 18:10PNH-LHR
17h 15m1 stop
£559Etihad Airways
Find Deal
Mon, 10 Nov - Tue, 25 Nov
Etihad Airways Logo
19:20 - 18:25LHR-PNH
16h 05m1 stop
Etihad Airways Logo
07:55 - 06:40PNH-LHR
29h 45m1 stop
£561Etihad Airways
Find Deal
Sat, 20 Sep - Tue, 14 Oct
 Logo
22:05 - 11:10LHR-PNH
31h 05m1 stop
 Logo
13:55 - 19:00PNH-LHR
35h 05m2 stops
Fri, 9 Jan - Fri, 23 Jan
 Logo
21:00 - 09:35LHR-KOS
29h 35m2 stops
 Logo
10:45 - 17:30KOS-LHR
37h 45m2 stops
Booking Insights

KAYAK's insights & trends for Heathrow to Cambodia flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Cambodia, 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 Cambodia is November, when tickets cost £562 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of return tickets is £976 and £910 respectively.

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

The average price of all round-trip flights from London Heathrow Airport to Cambodia clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Cambodia on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from London Heathrow Airport to Cambodia. For your return ticket, we recommend flying on a Thursday and avoiding Saturdays for the best deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Cambodia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from London Heathrow Airport to Cambodia, you should book around 2 weeks before departure, which saves you about 14% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know - Cheap tickets from London Heathrow Airport to Cambodia

Low seasonAugust
Cheapest flight£397
Best time to beat the crowds but there is an average 35% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from London Heathrow Airport to Phnom Penh

FAQs - booking Cambodia flights

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

    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 Cambodia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London Heathrow Airport to Cambodia 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 Cambodia?

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

    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 from London Heathrow Airport to Cambodia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Cambodia?

    The cheapest time of day to fly to Cambodia is generally at night, when retur flights cost £709 on average. Morning departures are around 1% more expensive than evening flights, on average. The most expensive time of day to fly to Cambodia is generally in the afternoon, which is peak travel time and where the average cost of a ticket is £1,157.

Reviews of the top 5 airlines flying from Heathrow to Cambodia

 
Need help choosing which airline to fly with from Heathrow to Cambodia? 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.
8.1
Singapore AirlinesOverall score based on 1354 reviews
7.9Comfort
8.2Boarding
8.6Crew
8.0Entertainment
7.7Food
Airline reviews

Good service and food. For buying items on flight should be preordered as they don’t keep much stock on board.

10.0 ExcellentSailesh, Apr 2025SIN - AMD
Read more Singapore Airlines reviews

Good service and food. For buying items on flight should be preordered as they don’t keep much stock on board.

We were not given option for meals since they ran out of the other option but good thing the remaining options tasted great.

Excelent service and plenty of food and drinks during the flight. Flight crew very attentive to our needs. Leg room between rows are very disappointing.

Construction at PDX resulting in very lung walk from the rental car to the gate. SFO, extremely long walk between terminals to get to connecting Singapore airlines flight. My smart watch recorded a total of 3 miles.

Crew and service was excellent, but passengers should be offered a welcome drink before take off which did not happen. Food was very good. Unfortunately the lie-flat bed in business class was one of the most uncomfortable I have experienced. The configuration forces you to sleep with your legs at an angle instead of in a straight line, plus there is very little padding on the bed so it wasn't possible to sleep for more than 2-3 hours on an 18 hour flight. For what the airlines charges for a business class ticket their hard product leaves a lot to be desired.

So happy I flew with Singapore Airlines. The customer service is top notch. I am terrified of flying and the staff made me feel so at ease. Will only fly Singapore internationally moving forward.

Food could have been better. Too many passengers getting up and down all the time.

It was an average flight. I would have expected more from this airline. Food, seats, service, etc was just average. I just give them some extra points for offering free WiFi on board with just a Krisflyer account.

I was a member of Krisflyer for ten years, but my last flight to Tokyo was a disaster. I had to stand in line for four hours before check-in because they were late opening the counter, and there were more than 50 people behind me. The plane was extremely small, and the food could have been better. When I dropped off my stroller before boarding the plane, I expected to receive it upon exiting for my transfer. However, they returned the stroller to the checked baggage because they said I was late getting off the plane. Of course, I was late; they assigned me a seat at the back of the aircraft, and I was traveling with a baby! The worst part was when I arrived in Jakarta. They damaged my stroller and refused to approve my claim, so I had to pay for stroller rental because of the damage they caused. I don’t know what happened to Singapore Airlines, but I felt like I was flying with a budget airline.

The seats were more narrow than at other lines. Food was mediocre (economy class)

Except that our flight was cancelled, by mail, and later moved to 12 hours prior, then the experience was good. In Bangkok we were offered a hotel, it was fine, but would have been nice to know in advance😉

The flight was mostly fine, but I really wished that seats had an outlet to charge devices considering the length of the flight (15 hours there and 14 hours back).

Although booked meal of fruit only The crew had not received this special meal The same happened on my flight Bangkok / CAN The films are so old that best is to use own computer to watch downloads . Serve nuts but they do not warm up . Service is attentive , WC clean

Terrible. It’s like they are stuck in the dark ages. I brought a standard carry on suitcase and a back pack - I was told I could only carry on 7kg per bag - in business class, I was forced to remove articles from the suitcase and put them into my backpack! That’s the most ridiculous thing I’ve ever encountered in all my years of flying. The two bags weighed the same amount but one could not be more than 7kg. Holy cow.

They used Thai Smile plane, which is a smaller model and used to service only domestic flights; hence, the plane is small and quite compact. No entertainment on the flight. While boarding was delayed, it was done in a quick manner.

I give EVA 5 stars in every category. I enjoy this airline and it's great team of employees. I always highly recommend EVA to friends and family and everyone.

The flight was delayed going out of the gate at BKK that made it a difficult challenge to get through immigration transfer at tapei and make it to my departure on time. This appears to be a recurring issue. The flight crew and cabin crew were excellent. The food was very nice.

The boarding efficiency was good. A couple of the flight attendants did not seem in the best of moods. Overall it was a good experience.

The setting configuration of the aircraft stinks. Nobody should pay business class fares and be so uncomfortable. The design of facing fellow passengers is a brilliant nincompoop.

Entertainment is limited with a relatively old catalogue. Wi-Fi never works and the cabin and lavatory had evidence of a lot of scuff marks and temporary repairs. Nothing unsafe, but a bit tatty in places.

Overall I had good experience with China Southern airline. Nothing to claim. I hoped they could improve the meal quality that is.

Wow very impressed by the quality and attentiveness of service of China Southern. Lived the blankets! Will definitely fly with them again. Despite language barriers, a few attendants know enough English to understand our rudimentary Mandarin and respond to basic questions. Although they don’t explain the beverage and meal service on the website or ticketing documents, they offered regular beverage cart and snacks during the beginning hours and end hours of the long, transoceanic flight. A full meal at the beginning and end of the flight as well, and a midflight small sandwich (dinner roll sized) but we weren’t hungry and didn’t try that one. The expectation is that every sleeps during the middle of the flight. We were on a “redeye” departure from LAX with a morning arrival in China, so I don’t know if this service pattern is the same for other flights. The domestic flight we took from Guangzhou to Harbin offered conventional refreshments and meals like a US flight service. Note that they didn’t offer diet sodas. If you like to stay hydrated, I recommend bringing plenty of your own. It is served in small cups like any other drink. You can ask for a bottle but they’re tiny - about 6 ounces.

China Southern was not the problem. I booked my flight through Kayak and also received a booking reference and alert details regarding departure time and gate numbers… however Kayak NEVER actually booked my flight! We were stranded at the airport without a flight for a long awaited holiday!

The connection between LA and Atlanta was too much stress

Terrible boarding experience,,food is very poor that I I . Never going book this airline again.

The crew were kind, patient and responsive. The service was excellent, even though we travelled the cheapest economy class. We arrived at our destination 40 min early, which for a 15+ hour flight is a great bonus. The boarding seemed a bit "loose", but got us boarded on time, and the plane was off exactly @ 0:30 hrs.

The airport didn‘t give me the ticket. I called customer service to ask for a refund but they kept giving me a perfunctory response and refused to refund me.

The flight was delayed hours and most flights from CS are always delayed. Plane was efficient and got us home but not the best food and no entertainment system at all.

Not good - chair back could not move back for premium economy. Not worth the price

The back of the chair - premium economy could not move back - not worth the price

We are row 11, when the crew came to us, only one meal choice was available.

OK seats comfortable, easy boarding/embarking, excellent connection to domestic Malaysia flight with baggage checked through without customs. Catering especially drinks borderline ok luckily less important aspect

Comfortable seats in economy, managed a few hours sleep in an o night flight but the food was terrible. Surprising as Malaysia airlines has been good in the past. Service was mediocre this time too.

Vast improvement needed in customer service. I couldn’t get the drink of my choice during both meals (i.e. sparking water and Diet Coke). I had used plastic cups falling onto me from the tray. No eye contact when they thank you on the way out signalling an insincere thank you.

Jia yung was the flight attendant that made this a miserable flight.

The flight isn’t great, as the plane has faulty with light and noise. It blinks and make noise for 8hrs non stop! Causing health and sensory issues! Causing Hazard matter to all 3 babies that on bassinet seats. This matters affected 12 passengers and the most horrible flight I ever experience. Have been flying with MAS for more 30yrs and this is the worst! Very disappointed

AC not working, just slowly blowing room temperature air. Long taxi time does not help as well. Sweating all over the whole trip.

Did not take as cancelled 3 time so took another airline

It was a 2-hour flight so they didn't have much time for serving food. There was some turbulence so they could not serve hot coffee or tea for the safety reason. Good service, good tasting food, nice plane, a little bit of delay.

The IFE is quite unconvenient if using our own device. Not all passenger brought their own earphone/headphone.

It's terrible that we can't do online check in because we didn't buy the tickets directly from Air china. It was not explained until I contacted Chatdeal and we could not sit together.

Communication between the captain/crew and the passengers needs to be improved.

Food and service are good. Bathroom was lack of lotions and cleaning. That should be improved.

Food & service very good next I will pick up again

Chinese flight attendants didn't speak english well. They didn't care enough to remember that I (east asian who isn't Chinese) wasn't Chinese and spoke English. Announcement in english on board was poor and I find it very difficult to understand what was announced. Also, a cabin bag allows only 5kg!

Everything was not satisfactory - the flight was delayed, staffs were ok but they didn't speak English well. I am from east Asia (not Chinese) and they didn't care enough to remember that I wasn't Chinese but persistently spoke chinese to me. The flight announcement in english wasn't clear to understand.

I wish I had been able to choose a vegetarian meal. Crew friendly and helpful. Seat was ok. All quite efficient and pleasant. Would recommend for inner China travel for sure.

The flight is not bad, but the Business Lounge is not big enough for the quantity of people they accept and there is a limited options for food and beverages.

It was simply bad and on top of that my luggage hasn't been delivered until now. They can't even localize it which is just unacceptable when they are supposed to scan the bar code they put when we check in

We bought premium Economy, thinking it would be more comfortable, but the seat is so narrow ,that my legs and feet are swollen , I can't wear shoes !

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