Cheap Flights from London to Phnom Penh from $847

Q: How much are return flights from London to Phnom Penh?

The best price we found for a return flight from London to Phnom Penh is $847. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Q: Which airlines fly direct from London to Phnom Penh?

Currently, there are no airlines that fly direct from London to Phnom Penh. But we found flights with one stop from $847.

Q: How many flights are there a week from London to Phnom Penh?

As of April 2025, there are no flights flying from London to Phnom Penh.

Q: When is the cheapest time to fly from London to Phnom Penh?

The cheapest month to fly from London to Phnom Penh is usually April 2025.

Q: Which upcoming date is cheapest to fly from London to Phnom Penh Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to Phnom Penh Airport on Monday, 22 September 2025 .

Q: Can I get a direct flight from London to Phnom Penh Airport?

No airlines currently offer direct flights between London and Phnom Penh Airport. Most routes have one or more stops.

Q: How can I find the best flight deal to Phnom Penh?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Phnom Penh but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

Q: When is the best time to book flights to Phnom Penh?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Phnom Penh is around 40 days in advance, so don’t leave your flight to the last minute.

Q: Which is the cheapest airline to fly from London to Phnom Penh with?

The cheapest airline that flies to Phnom Penh is Air China .

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Flight deals from London to Phnom Penh

Looking for a cheap last-minute deal or the best return flight from London to Phnom Penh? Find the lowest prices on one-way and return tickets right here.

Phnom Penh.$847 per passenger.Departing Mon, 22 Sep, returning Mon, 22 Dec.Return flight with Air China.Outbound indirect flight with Air China, departs from London Gatwick on Mon, 22 Sep, arriving in Phnom Penh.Inbound indirect flight with Air China, departs from Phnom Penh on Mon, 22 Dec, arriving in London Heathrow.Price includes taxes and charges.From $847, select.

Phnom Penh.$848 per passenger.Departing Mon, 1 Sep, returning Fri, 28 Nov.Return flight with Air China.Outbound indirect flight with Air China, departs from London Gatwick on Mon, 1 Sep, arriving in Phnom Penh.Inbound indirect flight with Air China, departs from Phnom Penh on Fri, 28 Nov, arriving in London Heathrow.Price includes taxes and charges.From $848, select.

Phnom Penh.$875 per passenger.Departing Mon, 3 Nov, returning Mon, 17 Nov.Return flight with Air China.Outbound indirect flight with Air China, departs from London Heathrow on Mon, 3 Nov, arriving in Phnom Penh.Inbound indirect flight with Air China, departs from Phnom Penh on Mon, 17 Nov, arriving in London Heathrow.Price includes taxes and charges.From $875, select.

Phnom Penh.$917 per passenger.Departing Mon, 1 Sep, returning Mon, 13 Oct.Return flight with Air China.Outbound indirect flight with Air China, departs from London Heathrow on Mon, 1 Sep, arriving in Phnom Penh.Inbound indirect flight with Air China, departs from Phnom Penh on Mon, 13 Oct, arriving in London Heathrow.Price includes taxes and charges.From $917, select.

Phnom Penh.$917 per passenger.Departing Thu, 4 Dec, returning Fri, 12 Dec.Return flight with Air China.Outbound indirect flight with Air China, departs from London Heathrow on Thu, 4 Dec, arriving in Phnom Penh.Inbound indirect flight with Air China, departs from Phnom Penh on Fri, 12 Dec, arriving in London Heathrow.Price includes taxes and charges.From $917, select.

Phnom Penh.$917 per passenger.Departing Mon, 24 Nov, returning Mon, 8 Dec.Return flight with Air China.Outbound indirect flight with Air China, departs from London Heathrow on Mon, 24 Nov, arriving in Phnom Penh.Inbound indirect flight with Air China, departs from Phnom Penh on Mon, 8 Dec, arriving in London Heathrow.Price includes taxes and charges.From $917, select.

Phnom Penh.$918 per passenger.Departing Wed, 29 Oct, returning Wed, 12 Nov.Return flight with Air China.Outbound indirect flight with Air China, departs from London Heathrow on Wed, 29 Oct, arriving in Phnom Penh.Inbound indirect flight with Air China, departs from Phnom Penh on Wed, 12 Nov, arriving in London Heathrow.Price includes taxes and charges.From $918, select.

Phnom Penh.$923 per passenger.Departing Wed, 4 Jun, returning Wed, 11 Jun.Return flight with Air China.Outbound indirect flight with Air China, departs from London Gatwick on Wed, 4 Jun, arriving in Phnom Penh.Inbound indirect flight with Air China, departs from Phnom Penh on Wed, 11 Jun, arriving in London Gatwick.Price includes taxes and charges.From $923, select.

Find the cheapest month to fly from London to Phnom Penh

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to Phnom Penh flights are currently cheapest in November.

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London to Phnom Penh: Alternative routes

Compare routes from London to Phnom Penh below. You may find an airport to fly into that's cheaper, faster, or easier than Phnom Penh.

London to Phnom Penh: Flight information

The things to know before you go.

Cheapest flight found	$847
Cheapest month to fly	September

Finding cheap flights from London to Phnom Penh: Frequently asked questions

How much are return flights from London to Phnom Penh?

Which airlines fly direct from London to Phnom Penh?

How many flights are there a week from London to Phnom Penh?

When is the cheapest time to fly from London to Phnom Penh?

Which upcoming date is cheapest to fly from London to Phnom Penh Airport on?

Can I get a direct flight from London to Phnom Penh Airport?

How can I find the best flight deal to Phnom Penh?

When is the best time to book flights to Phnom Penh?

Which is the cheapest airline to fly from London to Phnom Penh with?

Flying from London to Phnom Penh International Airport (PNH): what you need to know

London has plenty of airports to leave from. Check out your departure options from London Heathrow Airport (LHR) and London Gatwick Airport (LGW) when organising your flight from London to Phnom Penh International Airport (PNH). Stansted Airport (STN), London Luton Airport (LTN) and London City Airport (LCY) are the city's other main bases.
Phnom Penh International Airport is located in Phnom Penh. The city operates in the UTC+7 timezone and is 7 hours ahead of London.
Your flight from London to PNH won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.
Travelling during a peak month like July? Major public holidays and other high seasons can lead to longer lines and delays at security. Be extra cautious and get there up to four hours ahead of international flights and two hours before a domestic departure.

Airports in London

London Heathrow Airport (LHR)

We make it a cinch to find a flight from London to PNH that includes a stopover. To see all your options leaving from London Heathrow Airport (LHR), uncheck 'Direct flights only.' Next, choose a flight with a stop long enough to tour the city of your choice. Major stopovers between LHR and PNH include:
- Suvarnabhumi Airport (BKK)
- Changi International Airport (SIN)
- Kuala Lumpur International Airport (KUL)
From central London, LHR is approximately 31 kilometres away. Use navigation apps or check the official airport website to work out the best way to arrive at the terminal.
After an easy start to your journey? Stay near London Heathrow Airport. Whether you've booked an early flight from London to Phnom Penh International Airport or just don't like being rushed, these hotels are the answer:

London Gatwick Airport (LGW)

Break up your flight from London to Phnom Penh International Airport with a stop so you can stretch your legs or cross another place off your list. Top stopovers between London Gatwick Airport and PNH are:
- Suvarnabhumi Airport (BKK)
- Guangzhou Baiyun International Airport (CAN)
- Changi International Airport (SIN)
LGW is around 80 kilometres from central London. It'll take 1 hour and 19 minutes or so to get to the airport by car from the city centre. Public transport takes approximately 1 hour and 26 minutes.
Get your holiday started early with an additional night away from home. Before catching your flight from London to PNH, chill out in one of these hotels close to London Gatwick Airport:

About Phnom Penh International Airport (PNH)

Consider staying in a hotel close to PNH if you're taking a late flight from London to Phnom Penh International Airport. Check in to one of these options and skip the long transfer:

Getting from Phnom Penh International Airport (PNH) to central Phnom Penh

Phnom Penh International Airport to central Phnom Penh is around 30 minutes in a car. It's approximately 11 kilometres away. Find out what options are available, such as cabs, car rentals or ride-sharing.

How to find the cheapest flights from London to Phnom Penh International Airport (PNH)

The best price we've seen for a one-way ticket from London to Phnom Penh International Airport is $628. The cheapest price for a return flight is $847. Remember fares can change due to availability at the time of booking.
It's usually best to book early if you're hoping to get cheap tickets from London to PNH. That's because airlines adjust prices based on demand, which tends to increase closer to the date of departure.
The 'Whole month' search tool shows you the cheapest tickets from London to Phnom Penh International Airport across the entire month. It's a good way to snap up a bargain if your dates are flexible.
Finding a cheap ticket from London to PNH is easy with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch as soon as there's a better deal.
Tailor your flights with filters. Pick your ideal departure and arrival times, airlines and total journey duration. You can also sort results by 'Cheapest,' 'Fastest' or 'Best' flights from London to Phnom Penh International Airport.

The best time to fly from London to Phnom Penh International Airport (PNH)

February is the quietest time to fly to Phnom Penh. Alternatively, follow the crowds and go in August. This is the most popular month for flights from London to Phnom Penh International Airport.
The warmest month in Phnom Penh is March, with temperatures ranging between 23ºC and 38ºC. Lock in your flights from London to PNH in this month if you enjoy this type of weather.
Visit in January if you want to explore when it's cooler. Temperatures average between 20ºC and 33ºC. However, this city delivers on a good time whenever you book your cheap flights from London to Phnom Penh International Airport.

More about Phnom Penh

When it comes to searching for somewhere to lay your head, you'll find the most popular stays in Phnom Penh right here. Browse these hotels once you've locked in your flight from London to Phnom Penh International Airport:
One of the best ways to get to know Phnom Penh is to visit its most popular sights. Essential stops include Royal Palace, Tuol Sleng Genocide Museum and Wat Phnom.

Complete your Phnom Penh trip with a car rental

After you've booked your hotel and cheap flight from London to Phnom Penh International Airport, next up is choosing one of our car rentals in Phnom Penh. Check out the deals and easily compare options on price, pick-up convenience, fuel policies, and more.