Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London Heathrow Airport to Phnom Penh from £323

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Phnom Penh departing on 12/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Deals available from 900+ travel sites.

'This year, momondo is the #1 place for airfares on the internet.'
Voted winner of Europe's Best Travel App 2023
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? to track prices.

Find the cheapest flights from London Heathrow Airport to Phnom Penh

Cheap return flights

These are some of the best return flight deals from London Heathrow Airport to Phnom Penh that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from London Heathrow Airport to Phnom Penh.

Cheap last-minute flights

Planning a quick getaway from London Heathrow Airport to Phnom Penh? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Phnom Penh, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from London Heathrow Airport to Phnom Penh

Find recent round-trip train or bus tickets from London Heathrow Airport to Phnom Penh.

All round-trip flight deals to Phnom Penh

The cheapest plane tickets to Phnom Penh found on KAYAK recently.
17:40 - 11:15LHR-PNH
34h 35m2 stops
12:15 - 15:55PNH-LHR
34h 40m2 stops
£422Air China
Find Deal
Wed, 15 Jan - Wed, 26 Feb
21:30 - 10:50LHR-PNH
30h 20m2 stops
15:50 - 14:00PNH-LHR
53h 10m2 stops
£454China Southern
Find Deal
Wed, 15 Jan - Fri, 14 Feb
21:10 - 11:15LHR-PNH
31h 05m1 stop
12:15 - 19:10PNH-LHR
37h 55m1 stop
£454Shenzhen Airlines
Find Deal
Mon, 10 Feb - Sun, 23 Feb
22:05 - 11:10LHR-PNH
31h 05m1 stop
12:15 - 19:50PNH-LHR
37h 35m1 stop
£456Shenzhen Airlines
Find Deal
Mon, 12 May - Sun, 18 May
17:40 - 23:10LHR-PNH
22h 30m1 stop
00:25 - 17:50PNH-LHR
24h 25m1 stop
£484Air China
Find Deal
Wed, 15 Jan - Tue, 25 Feb
21:30 - 10:50LHR-PNH
30h 20m2 stops
15:50 - 18:15PNH-LHR
33h 25m1 stop
£500China Southern
Find Deal
Mon, 24 Feb - Mon, 10 Mar
17:50 - 23:15LHR-PNH
22h 25m1 stop
11:05 - 17:30PNH-LHR
37h 25m2 stops
£683China Eastern
Find Deal
Mon, 10 Feb - Sun, 23 Feb
21:00 - 10:00LHR-PNH
30h 00m2 stops
00:15 - 17:40PNH-LHR
24h 25m1 stop
£685China Eastern
Find Deal
Fri, 14 Mar - Sat, 29 Mar
15:05 - 16:15LHR-PNH
19h 10m2 stops
17:40 - 06:25PNH-LHR
18h 45m2 stops
£767Qatar Airways
Find Deal
Mon, 12 May - Sun, 18 May
21:55 - 16:00LHR-PNH
36h 05m2 stops
17:40 - 06:25PNH-LHR
18h 45m2 stops
£768Qatar Airways
Find Deal
Thu, 24 Apr - Wed, 30 Apr
21:10 - 11:15LHR-PNH
31h 05m1 stop
£323Shenzhen Airlines
Find Deal
Wed, 12 Feb
21:30 - 10:00LHR-PNH
29h 30m3 stops
Thu, 9 Jan
21:10 - 18:50LHR-PNH
38h 40m1 stop
£332Shenzhen Airlines
Find Deal
Mon, 10 Feb
21:00 - 10:00LHR-PNH
54h 00m3 stops
£401China Eastern
Find Deal
Tue, 7 Jan
22:00 - 10:50LHR-PNH
29h 50m1 stop
£407China Southern
Find Deal
Tue, 14 Jan
17:40 - 23:10LHR-PNH
22h 30m1 stop
£408Air China
Find Deal
Tue, 7 Jan
17:50 - 23:15LHR-PNH
22h 25m1 stop
£471China Eastern
Find Deal
Tue, 11 Feb
20:25 - 11:15LHR-PNH
31h 50m2 stops
£751Air China
Find Deal
Fri, 3 Jan
21:35 - 19:35LHR-PNH
15h 00m1 stop
£831Thai Airways
Find Deal
Wed, 25 Dec
11:50 - 08:45LHR-PNH
13h 55m1 stop
£834Thai Airways
Find Deal
Wed, 25 Dec
20:25 - 23:10LHR-PNH
19h 45m1 stop
00:25 - 17:50PNH-LHR
24h 25m1 stop
£912Air China
Find Deal
Mon, 23 Dec - Wed, 1 Jan
17:40 - 23:10LHR-PNH
22h 30m1 stop
12:15 - 15:55PNH-LHR
34h 40m2 stops
£1,043Air China
Find Deal
Mon, 23 Dec - Thu, 2 Jan
21:10 - 11:15LHR-PNH
31h 05m1 stop
12:15 - 19:10PNH-LHR
37h 55m1 stop
£1,159Shenzhen Airlines
Find Deal
Mon, 23 Dec - Tue, 31 Dec
17:50 - 23:15LHR-PNH
22h 25m1 stop
00:15 - 13:55PNH-LHR
20h 40m1 stop
£1,454China Eastern
Find Deal
Mon, 23 Dec - Sun, 29 Dec
21:00 - 23:15LHR-PNH
19h 15m1 stop
00:15 - 17:30PNH-LHR
24h 15m1 stop
£1,539China Eastern
Find Deal
Sun, 22 Dec - Sun, 29 Dec
17:15 - 10:50LHR-PNH
34h 35m2 stops
08:00 - 16:05PNH-LHR
39h 05m2 stops
£1,718China Southern
Find Deal
Sun, 22 Dec - Mon, 6 Jan
21:30 - 10:50LHR-PNH
30h 20m2 stops
08:00 - 17:00PNH-LHR
40h 00m2 stops
£1,775China Southern
Find Deal
Sun, 22 Dec - Sun, 5 Jan
20:35 - 08:35LHR-PNH
29h 00m1 stop
18:45 - 15:35PNH-LHR
27h 50m1 stop
£1,786Singapore Airlines
Find Deal
Thu, 19 Dec - Thu, 23 Jan
09:10 - 08:35LHR-PNH
16h 25m1 stop
13:45 - 15:35PNH-LHR
32h 50m1 stop
£2,583Singapore Airlines
Find Deal
Thu, 19 Dec - Fri, 3 Jan
21:25 - 09:50LHR-PNH
29h 25m1 stop
18:30 - 05:35PNH-LHR
18h 05m1 stop
£7,371Malaysia Airlines
Find Deal
Sun, 22 Dec - Tue, 24 Dec

Air China flights from London Heathrow Airport to Phnom Penh

Our best Air China deals on London Heathrow Airport to Phnom Penh flight tickets
Air China
15 Jan
LHR17:40London Heathrow
34h 35m
2 stops
PNH11:15Phnom Penh Pochentong
26 Feb
PNH12:15Phnom Penh Pochentong
34h 40m
2 stops
LHR15:55London Heathrow
Air China
15 Jan
LHR17:40London Heathrow
22h 30m
1 stop
PNH23:10Phnom Penh Pochentong
25 Feb
PNH00:25Phnom Penh Pochentong
24h 25m
1 stop
LHR17:50London Heathrow
Air China
11 Jan
LHR20:25London Heathrow
19h 45m
1 stop
PNH23:10Phnom Penh Pochentong
9 Feb
PNH00:25Phnom Penh Pochentong
22h 30m
1 stop
LHR15:55London Heathrow

China Southern flights from London Heathrow Airport to Phnom Penh

Our best China Southern deals on London Heathrow Airport to Phnom Penh flight tickets
China Southern
15 Jan
LHR21:30London Heathrow
30h 20m
2 stops
PNH10:50Phnom Penh Pochentong
14 Feb
PNH15:50Phnom Penh Pochentong
53h 10m
2 stops
LHR14:00London Heathrow
China Southern
24 Feb
LHR21:30London Heathrow
30h 20m
2 stops
PNH10:50Phnom Penh Pochentong
10 Mar
PNH15:50Phnom Penh Pochentong
33h 25m
1 stop
LHR18:15London Heathrow
China Southern
29 Jan
LHR21:30London Heathrow
34h 05m
2 stops
PNH14:35Phnom Penh Pochentong
22 Feb
PNH08:00Phnom Penh Pochentong
37h 00m
2 stops
LHR14:00London Heathrow

See travel insights to Phnom Penh from

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

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 London Heathrow Airport and Phnom Penh?

What is the cheapest month to fly to Phnom Penh?

The month of September is another great option to travel to Phnom Penh, with average flight prices from London Heathrow Airport averaging around £582.

What is the cheapest day to depart on your flight to Phnom Penh?

Our data shows that Monday is the least expensive day to fly to Phnom Penh. Tickets to fly out on this day can be as low as £655. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Phnom Penh on Friday is £762.

What is the cheapest time of day to depart on your flight to Phnom Penh?

Our data shows that the cheapest London Heathrow Airport to Phnom Penh flights are usually those with departure times in the evening. Our users have found flights to Phnom Penh in the evening for as low as £558. At midday is when there is more demand to fly to Phnom Penh, so prices are often more expensive at around £859 per ticket.

How far in advance should I book a flight to Phnom Penh?

The best time to book a flight to Phnom Penh from London Heathrow Airport is 44 days out, which is when prices tend to be around £754. Don’t hesitate to check prices now though, because momondo users recently found tickets for as low as £332.

Can stopping save me money on London Heathrow Airport to Phnom Penh flights?

You could potentially save up to 7% on your flight if you consider stops on a London Heathrow Airport to Phnom Penh flight.

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

As of December 2024, prices for London Heathrow Airport to Phnom Penh flights are approximately 2% cheaper when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Phnom Penh

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

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

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

Best price found

£323

Fastest flight time

13h 55m

Direct flights

None

Airports in Phnom Penh

1 airport
The best one-way flight to Phnom Penh from London Heathrow Airport in the past 72 hours is £323. The best return flight deal from London Heathrow Airport to Phnom Penh found on momondo in the last 72 hours is £422.
The fastest flight from London Heathrow Airport to Phnom Penh takes 13h 55m
There are no direct flights from London Heathrow Airport to Phnom Penh. Popular non-direct route for this connection is London Heathrow Airport - Phnom Penh Pochentong Airport.
There is 1 airport near Phnom Penh: Phnom Penh Pochentong (PNH)

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

    Phnom Penh Pochentong is 6233.8 mi away from London Heathrow. A reasonable flight in good conditions will take 15h 05m.

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

    Prices for flights from London Heathrow Airport to Phnom Penh Pochentong Airport are updated daily.

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

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

  • What documentation or ID do you need to fly to Phnom Penh Pochentong Airport?

    The required travel and health documents for your Phnom Penh Pochentong Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Phnom Penh Pochentong Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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


Best airlines flying from London Heathrow Airport to Phnom Penh

Compare and see reviews for airlines that fly from London Heathrow Airport to Phnom Penh with momondo
Airline
Rating
Free Cancellation
Price
Shenzhen AirlinesPriceFrom £405Free CancellationRating
5.8
12 reviews
Search Shenzhen Airlines flights
China SouthernPriceFrom £413Free CancellationRating
7.4
92 reviews
Search China Southern flights
Air ChinaPriceFrom £459Free CancellationRating
7.0
122 reviews
Search Air China flights
China EasternPriceFrom £624Free CancellationRating
7.0
155 reviews
Search China Eastern flights
Malaysia AirlinesPriceFrom £661Free CancellationRating
7.3
290 reviews
Search Malaysia Airlines flights
Singapore AirlinesPriceFrom £668Free CancellationRating
8.1
1,331 reviews
Search Singapore Airlines flights
Cathay PacificPriceFrom £697Free CancellationRating
7.6
839 reviews
Search Cathay Pacific flights
Vietnam AirlinesPriceFrom £715Free CancellationRating
7.6
224 reviews
Search Vietnam Airlines flights
Qatar AirwaysPriceFrom £777Free CancellationRating
7.5
3,792 reviews
Search Qatar Airways flights
British AirwaysPriceFrom £789Free CancellationRating
6.6
6,817 reviews
Search British Airways flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Phnom Penh for you.

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

All flight searches from London to Phnom Penh on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential London to Phnom Penh flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of London to Phnom Penh flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


An easier way to manage your Phnom Penh trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Tue 24/12
Tue 31/12
Email me momondo's favourite deals

Find better results for your trip to Cambodia

Airports servicing Cambodia