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Cheap flights from London to Phnom Penh from C$ 608

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 to Phnom Penh departing on 26/10. 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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Find the cheapest flights from London to Phnom Penh

Cheap round-trip flights

Shenzhen Airlines Logo
10:05 p.m. - 11:10 a.m.LHR-PNH
31h 05m1 stop
Shenzhen Airlines Logo
12:15 p.m. - 8:00 p.m.PNH-LHR
37h 45m1 stop
C$ 868Shenzhen Airlines
Find Deal
Fri, 19 Sep - Thu, 2 Oct
Shenzhen Airlines Logo
10:05 p.m. - 11:10 a.m.LHR-PNH
31h 05m1 stop
Shenzhen Airlines Logo
12:15 p.m. - 8:00 p.m.PNH-LHR
37h 45m1 stop
C$ 968Shenzhen Airlines
Find Deal
Wed, 17 Sep - Sat, 27 Sep
Shenzhen Airlines Logo
10:05 p.m. - 11:10 a.m.LHR-PNH
31h 05m1 stop
Shenzhen Airlines Logo
12:15 p.m. - 8:00 p.m.PNH-LHR
37h 45m1 stop
C$ 970Shenzhen Airlines
Find Deal
Mon, 1 Sep - Sat, 13 Sep
Lufthansa Logo
1:45 p.m. - 8:40 a.m.LHR-PNH
36h 55m2 stops
Lufthansa Logo
6:55 p.m. - 8:15 a.m.PNH-LHR
19h 20m2 stops
C$ 1,059Lufthansa
Find Deal
Wed, 17 Sep - Wed, 24 Sep
SWISS Logo
8:05 p.m. - 8:40 a.m.LHR-PNH
54h 35m2 stops
SWISS Logo
6:55 p.m. - 4:25 p.m.PNH-LHR
27h 30m2 stops
C$ 1,074SWISS
Find Deal
Tue, 16 Sep - Tue, 30 Sep
SWISS Logo
5:10 p.m. - 8:40 a.m.LHR-PNH
33h 30m2 stops
SWISS Logo
6:55 p.m. - 5:50 p.m.PNH-LHR
28h 55m2 stops
C$ 1,076SWISS
Find Deal
Thu, 11 Sep - Thu, 18 Sep
Lufthansa Logo
5:30 p.m. - 8:40 a.m.LHR-PNH
33h 10m2 stops
Lufthansa Logo
6:55 p.m. - 8:15 a.m.PNH-LHR
19h 20m2 stops
C$ 1,091Lufthansa
Find Deal
Thu, 25 Sep - Wed, 1 Oct
Vietnam Airlines Logo
7:50 p.m. - 4:55 p.m.LHR-PNH
15h 05m1 stop
Vietnam Airlines Logo
2:10 p.m. - 4:55 p.m.PNH-LHR
32h 45m1 stop
C$ 1,292Vietnam Airlines
Find Deal
Tue, 23 Sep - Wed, 1 Oct
China Airlines Logo
9:10 p.m. - 9:50 a.m.LHR-PNH
30h 40m1 stop
China Airlines Logo
5:10 p.m. - 4:30 p.m.PNH-LHR
29h 20m1 stop
C$ 1,311China Airlines
Find Deal
Wed, 17 Sep - Mon, 29 Sep
Vietnam Airlines Logo
7:10 p.m. - 4:55 p.m.LHR-PNH
15h 45m1 stop
Vietnam Airlines Logo
2:10 p.m. - 5:50 p.m.PNH-LHR
33h 40m1 stop
C$ 1,329Vietnam Airlines
Find Deal
Thu, 18 Sep - Mon, 29 Sep

Shenzhen Airlines flights from London to Phnom Penh

Our best Shenzhen Airlines deals on London to Phnom Penh flight tickets
Shenzhen Airlines
19 Sep
LHR10:05 p.m.London Heathrow
31h 05m
1 stop
PNH11:10 a.m.Phnom Penh Pochentong
2 Oct
PNH12:15 p.m.Phnom Penh Pochentong
37h 45m
1 stop
LHR8:00 p.m.London Heathrow
C$ 868
Find similar
Shenzhen Airlines
17 Sep
LHR10:05 p.m.London Heathrow
31h 05m
1 stop
PNH11:10 a.m.Phnom Penh Pochentong
27 Sep
PNH12:15 p.m.Phnom Penh Pochentong
37h 45m
1 stop
LHR8:00 p.m.London Heathrow
C$ 968
Find similar
Shenzhen Airlines
1 Sep
LHR10:05 p.m.London Heathrow
31h 05m
1 stop
PNH11:10 a.m.Phnom Penh Pochentong
13 Sep
PNH12:15 p.m.Phnom Penh Pochentong
37h 45m
1 stop
LHR8:00 p.m.London Heathrow
C$ 970
Find similar

SWISS flights from London to Phnom Penh

Our best SWISS deals on London to Phnom Penh flight tickets
SWISS
16 Sep
LHR8:05 p.m.London Heathrow
54h 35m
2 stops
PNH8:40 a.m.Phnom Penh Pochentong
30 Sep
PNH6:55 p.m.Phnom Penh Pochentong
27h 30m
2 stops
LHR4:25 p.m.London Heathrow
C$ 1,074
Find similar
SWISS
11 Sep
LHR5:10 p.m.London Heathrow
33h 30m
2 stops
PNH8:40 a.m.Phnom Penh Pochentong
18 Sep
PNH6:55 p.m.Phnom Penh Pochentong
28h 55m
2 stops
LHR5:50 p.m.London Heathrow
C$ 1,076
Find similar
SWISS
20 Sep
LHR8:05 p.m.London Heathrow
54h 35m
2 stops
PNH8:40 a.m.Phnom Penh Pochentong
2 Oct
PNH6:55 p.m.Phnom Penh Pochentong
19h 00m
2 stops
LHR7:55 a.m.London Heathrow
C$ 1,120
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London to Phnom Penh that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 30 July 2025.
Use the filters below to find and compare flights from London to Phnom Penh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Fri 19/9

10:05 p.m.-11:10 a.m.

1 stop31h 05m

Phnom Penh Pochentong

Thu 2/10

12:15 p.m.-8:00 p.m.

1 stop37h 45m

C$ 868

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Wed 17/9

10:05 p.m.-11:10 a.m.

1 stop31h 05m

Phnom Penh Pochentong

Sat 27/9

12:15 p.m.-8:00 p.m.

1 stop37h 45m

C$ 968

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 1/9

10:05 p.m.-11:10 a.m.

1 stop31h 05m

Phnom Penh Pochentong

Sat 13/9

12:15 p.m.-8:00 p.m.

1 stop37h 45m

C$ 970

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Wed 17/9

1:45 p.m.-8:40 a.m.

2 stops36h 55m

Phnom Penh Pochentong

Wed 24/9

6:55 p.m.-8:15 a.m.

2 stops19h 20m

C$ 1,059

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Tue 16/9

8:05 p.m.-8:40 a.m.

2 stops54h 35m

Phnom Penh Pochentong

Tue 30/9

6:55 p.m.-4:25 p.m.

2 stops27h 30m

C$ 1,074

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Thu 11/9

5:10 p.m.-8:40 a.m.

2 stops33h 30m

Phnom Penh Pochentong

Thu 18/9

6:55 p.m.-5:50 p.m.

2 stops28h 55m

C$ 1,076

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Thu 25/9

5:30 p.m.-8:40 a.m.

2 stops33h 10m

Phnom Penh Pochentong

Wed 1/10

6:55 p.m.-8:15 a.m.

2 stops19h 20m

C$ 1,091

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Tue 23/9

7:50 p.m.-4:55 p.m.

1 stop15h 05m

Phnom Penh Pochentong

Wed 1/10

2:10 p.m.-4:55 p.m.

1 stop32h 45m

C$ 1,292

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Wed 17/9

9:10 p.m.-9:50 a.m.

1 stop30h 40m

Phnom Penh Pochentong

Mon 29/9

5:10 p.m.-4:30 p.m.

1 stop29h 20m

C$ 1,311

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Thu 18/9

7:10 p.m.-4:55 p.m.

1 stop15h 45m

Phnom Penh Pochentong

Mon 29/9

2:10 p.m.-5:50 p.m.

1 stop33h 40m

C$ 1,329

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Phnom Penh from

How to get the cheapest flight ticket from London 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 and Phnom Penh?

What is the cheapest month to fly to Phnom Penh?

The cheapest month to fly to Phnom Penh from London is in November. Flight prices, which tend to average around C$ 930, are often lower during this time because this is during the off-season. If you aren’t able to travel to Phnom Penh during the month of November, then flying in September is also cheap. Prices for this month can be found on momondo for an average of C$ 1,017.

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

You are more likely to see cheaper flights to Phnom Penh from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Phnom Penh for around C$ 1,309 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phnom Penh from London for as low as C$ 1,127 on momondo.

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

As of July 2025, prices for London to Phnom Penh flights are approximately 51% more expensive when compared to flights at the same time last year.

When to book flights from London to Phnom Penh

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

Cheap London to Phnom Penh (LON to PNH) flight deals and tips

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

Best price found

C$ 608

Fastest flight time

15h 05m

Direct flights

None

Airports in Phnom Penh

1 airport
The best one-way flight to Phnom Penh from London in the past 72 hours is C$ 608. The best round-trip flight deal from London to Phnom Penh found on momondo in the last 72 hours is C$ 868.
The fastest flight from London to Phnom Penh takes 15h 05m
There are no direct flights from London 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)
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  • How far is London to Phnom Penh Pochentong by plane?

    The distance between London and Phnom Penh Pochentong is about 10009.6 km. 15h 05m is a normal flight duration for this route.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London 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.

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?

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

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?

Price alerts on flights to Phnom Penh from London 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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