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Cheap flights from Phnom Penh to London Heathrow Airport from £229

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Phnom Penh to London Heathrow Airport departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from Phnom Penh to London.
China Southern Logo
08:00 - 19:00PNH-LHR
17h 00m1 stop
China Southern Logo
19:15 - 10:40LHR-PNH
33h 25m2 stops
£488China Southern
Find Deal
Sat, 3 May - Sun, 18 May
China Southern Logo
08:00 - 19:00PNH-LHR
17h 00m1 stop
China Southern Logo
21:00 - 10:40LHR-PNH
31h 40m2 stops
£500China Southern
Find Deal
Mon, 5 May - Mon, 19 May
 Logo
00:20 - 20:30PNH-LHR
26h 10m1 stop
 Logo
22:05 - 11:10LHR-PNH
31h 05m1 stop
Thu, 15 May - Fri, 23 May
 Logo
00:20 - 20:30PNH-LHR
26h 10m1 stop
 Logo
22:05 - 11:10LHR-PNH
31h 05m1 stop
Thu, 15 May - Fri, 23 May
China Eastern Logo
00:10 - 18:40PNH-LHR
24h 30m1 stop
China Eastern Logo
21:20 - 23:15LHR-PNH
19h 55m1 stop
£558China Eastern
Find Deal
Mon, 5 May - Sun, 18 May
China Eastern Logo
00:10 - 18:40PNH-LHR
24h 30m1 stop
China Eastern Logo
21:20 - 23:15LHR-PNH
19h 55m1 stop
£562China Eastern
Find Deal
Fri, 2 May - Sun, 18 May
Malaysia Airlines Logo
18:20 - 16:35PNH-LHR
28h 15m1 stop
Malaysia Airlines Logo
11:00 - 10:00LHR-PNH
17h 00m1 stop
£639Malaysia Airlines
Find Deal
Tue, 6 May - Sun, 18 May
Shenzhen Airlines Logo
12:15 - 20:00PNH-LHR
37h 45m1 stop
Shenzhen Airlines Logo
22:05 - 11:10LHR-PNH
31h 05m1 stop
£695Shenzhen Airlines
Find Deal
Sat, 3 May - Sun, 18 May
Shenzhen Airlines Logo
12:15 - 20:00PNH-LHR
37h 45m1 stop
Shenzhen Airlines Logo
22:05 - 11:10LHR-PNH
31h 05m1 stop
£696Shenzhen Airlines
Find Deal
Sat, 3 May - Sun, 18 May
Malaysia Airlines Logo
11:10 - 05:55PNH-LHR
24h 45m1 stop
Malaysia Airlines Logo
11:00 - 17:25LHR-PNH
24h 25m1 stop
£799Malaysia Airlines
Find Deal
Thu, 11 Sep - Sat, 27 Sep

China Southern flights from Phnom Penh to London Heathrow Airport

Our best China Southern deals on Phnom Penh to London Heathrow Airport flight tickets
China Southern
3 May
PNH08:00Phnom Penh Pochentong
17h 00m
1 stop
LHR19:00London Heathrow
18 May
LHR19:15London Heathrow
33h 25m
2 stops
PNH10:40Phnom Penh Pochentong
China Southern
5 May
PNH08:00Phnom Penh Pochentong
17h 00m
1 stop
LHR19:00London Heathrow
19 May
LHR21:00London Heathrow
31h 40m
2 stops
PNH10:40Phnom Penh Pochentong
China Southern
5 May
PNH08:00Phnom Penh Pochentong
17h 00m
1 stop
LHR19:00London Heathrow
19 May
LHR21:00London Heathrow
21h 10m
2 stops
PNH00:10Phnom Penh Pochentong

China Eastern flights from Phnom Penh to London Heathrow Airport

Our best China Eastern deals on Phnom Penh to London Heathrow Airport flight tickets
China Eastern
5 May
PNH00:10Phnom Penh Pochentong
24h 30m
1 stop
LHR18:40London Heathrow
18 May
LHR21:20London Heathrow
19h 55m
1 stop
PNH23:15Phnom Penh Pochentong
China Eastern
2 May
PNH00:10Phnom Penh Pochentong
24h 30m
1 stop
LHR18:40London Heathrow
18 May
LHR21:20London Heathrow
19h 55m
1 stop
PNH23:15Phnom Penh Pochentong
China Eastern
2 May
PNH00:10Phnom Penh Pochentong
24h 30m
1 stop
LHR18:40London Heathrow
18 May
LHR21:20London Heathrow
19h 55m
1 stop
PNH23:15Phnom Penh Pochentong

See travel insights to London from

How to get the cheapest flight ticket from Phnom Penh to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Phnom Penh and London Heathrow Airport?

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

In general, October is the cheapest month to fly from Phnom Penh to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £613. The month of May is another great option to travel to London Heathrow Airport, with average flight prices from Phnom Penh averaging around £624.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Phnom Penh is on a Monday. momondo users have found tickets for Monday departures for as low as £0. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £847.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is at midday. momondo users have found flights departing from Phnom Penh to London Heathrow Airport at midday for as low as £0. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £1,065 on average. Flights to London Heathrow Airport from Phnom Penh in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Phnom Penh when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £786 when searching 11 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Phnom Penh for as low as £615 on momondo.

How have Phnom Penh to London Heathrow Airport flight prices changed over time?

As of April 2025, prices for Phnom Penh to London Heathrow Airport flights are approximately 13% cheaper when compared to flights at the same time last year.

When to book flights from Phnom Penh to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Phnom Penh to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Phnom Penh to London Heathrow Airport (PNH to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Phnom Penh to London Heathrow Airport

Best price found

£229

Fastest flight time

15h 30m

Direct flights

None
The best one-way flight to London Heathrow Airport from Phnom Penh in the past 72 hours is £229. The best return flight deal from Phnom Penh to London Heathrow Airport found on momondo in the last 72 hours is £488.
The fastest flight from Phnom Penh to London Heathrow Airport takes 15h 30m
There are no direct flights from Phnom Penh to London Heathrow Airport. Popular non-direct route for this connection is Phnom Penh Pochentong Airport - London Heathrow Airport.

  • How far is Phnom Penh Pochentong to London Heathrow by plane?

    Phnom Penh Pochentong and London Heathrow are 6233.8 mi apart from one another. Flights usually cover this in 15h 30m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Phnom Penh Pochentong Airport to London Heathrow Airport?

    Prices for flights from Phnom Penh Pochentong Airport to London Heathrow Airport were last updated today.

  • How many operators does momondo search for flights from Phnom Penh Pochentong Airport to London Heathrow Airport?

  • How old do you have to be to fly from Phnom Penh Pochentong Airport to London Heathrow Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Phnom Penh Pochentong Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Phnom Penh to London Heathrow Airport?


Best airlines flying from Phnom Penh to London Heathrow Airport

Compare and see reviews for airlines that fly from Phnom Penh to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
China SouthernPriceFrom £500Free CancellationRating
7.5
94 reviews
Search China Southern flights

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Why use momondo?

Why should I use momondo to find a flight deal from Phnom Penh to London?

It is quick and easy to find Phnom Penh to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Phnom Penh to London with flexible booking policies on momondo?

momondo does allow users to show only those flights to London from Phnom Penh which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Phnom Penh to London?

momondo provides multiple filters to help you find the best flight to London from Phnom Penh. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Phnom Penh to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Phnom Penh are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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