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Cheap flights from London to Phnom Penh from C$ 821

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 13/10. 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

Etihad Airways Logo
7:20 p.m. - 6:25 p.m.LHR-PNH
16h 05m1 stop
Etihad Airways Logo
7:55 a.m. - 6:10 p.m.PNH-LHR
17h 15m1 stop
C$ 968Etihad Airways
Find Deal
Wed, 12 Nov - Tue, 2 Dec
Etihad Airways Logo
7:20 p.m. - 6:30 a.m.LHR-PNH
28h 10m1 stop
Etihad Airways Logo
7:55 a.m. - 12:05 p.m.PNH-LHR
35h 10m1 stop
C$ 972Etihad Airways
Find Deal
Sun, 1 Mar - Fri, 13 Mar
Etihad Airways Logo
7:20 p.m. - 6:25 p.m.LHR-PNH
16h 05m1 stop
Etihad Airways Logo
7:55 a.m. - 6:40 a.m.PNH-LHR
29h 45m1 stop
C$ 997Etihad Airways
Find Deal
Wed, 12 Nov - Mon, 15 Dec
Etihad Airways Logo
8:55 p.m. - 6:30 a.m.LHR-PNH
26h 35m1 stop
Etihad Airways Logo
7:50 p.m. - 6:10 p.m.PNH-LHR
29h 20m1 stop
C$ 999Etihad Airways
Find Deal
Sun, 1 Mar - Thu, 12 Mar
Etihad Airways Logo
9:45 p.m. - 6:55 a.m.LHR-PNH
27h 10m1 stop
Etihad Airways Logo
8:30 a.m. - 6:45 p.m.PNH-LHR
16h 15m1 stop
C$ 1,005Etihad Airways
Find Deal
Sat, 11 Oct - Mon, 20 Oct
Etihad Airways Logo
9:45 p.m. - 6:55 a.m.LHR-PNH
27h 10m1 stop
Etihad Airways Logo
8:30 a.m. - 6:45 p.m.PNH-LHR
16h 15m1 stop
C$ 1,021Etihad Airways
Find Deal
Sat, 11 Oct - Sat, 18 Oct
Etihad Airways Logo
8:50 a.m. - 6:30 a.m.LHR-PNH
14h 40m1 stop
Etihad Airways Logo
7:50 p.m. - 6:40 a.m.PNH-LHR
17h 50m1 stop
C$ 1,028Etihad Airways
Find Deal
Thu, 5 Mar - Thu, 12 Mar
Etihad Airways Logo
8:55 p.m. - 6:25 p.m.LHR-PNH
14h 30m1 stop
Etihad Airways Logo
7:55 a.m. - 6:40 a.m.PNH-LHR
29h 45m1 stop
C$ 1,033Etihad Airways
Find Deal
Mon, 10 Nov - Mon, 8 Dec
Logo
8:50 p.m. - 6:55 a.m.LHR-PNH
28h 05m2 stops
Logo
8:30 a.m. - 6:45 p.m.PNH-LHR
16h 15m1 stop
C$ 1,410
Find Deal
Sat, 11 Oct - Sat, 18 Oct
Logo
6:00 a.m. - 6:30 a.m.LHR-PNH
17h 30m2 stops
Logo
7:55 a.m. - 6:10 p.m.PNH-LHR
17h 15m1 stop
C$ 1,572
Find Deal
Mon, 2 Feb - Mon, 16 Feb

Etihad Airways flights from London to Phnom Penh

Our best Etihad Airways deals on London to Phnom Penh flight tickets
Etihad Airways
12 Nov
LHR7:20 p.m.London Heathrow
16h 05m
1 stop
PNH6:25 p.m.Phnom Penh Pochentong
2 Dec
PNH7:55 a.m.Phnom Penh Pochentong
17h 15m
1 stop
LHR6:10 p.m.London Heathrow
C$ 968
Find similar
Etihad Airways
1 Mar
LHR7:20 p.m.London Heathrow
28h 10m
1 stop
PNH6:30 a.m.Phnom Penh Pochentong
13 Mar
PNH7:55 a.m.Phnom Penh Pochentong
35h 10m
1 stop
LHR12:05 p.m.London Heathrow
C$ 972
Find similar
Etihad Airways
12 Nov
LHR7:20 p.m.London Heathrow
16h 05m
1 stop
PNH6:25 p.m.Phnom Penh Pochentong
15 Dec
PNH7:55 a.m.Phnom Penh Pochentong
29h 45m
1 stop
LHR6:40 a.m.London Heathrow
C$ 997
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 15 September 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

Wed 12/11

7:20 p.m.-6:25 p.m.

1 stop16h 05m

Phnom Penh Pochentong

Tue 2/12

7:55 a.m.-6:10 p.m.

1 stop17h 15m

C$ 968

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 1/3

7:20 p.m.-6:30 a.m.

1 stop28h 10m

Phnom Penh Pochentong

Fri 13/3

7:55 a.m.-12:05 p.m.

1 stop35h 10m

C$ 972

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Wed 12/11

7:20 p.m.-6:25 p.m.

1 stop16h 05m

Phnom Penh Pochentong

Mon 15/12

7:55 a.m.-6:40 a.m.

1 stop29h 45m

C$ 997

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 1/3

8:55 p.m.-6:30 a.m.

1 stop26h 35m

Phnom Penh Pochentong

Thu 12/3

7:50 p.m.-6:10 p.m.

1 stop29h 20m

C$ 999

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sat 11/10

9:45 p.m.-6:55 a.m.

1 stop27h 10m

Phnom Penh Pochentong

Mon 20/10

8:30 a.m.-6:45 p.m.

1 stop16h 15m

C$ 1,005

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sat 11/10

9:45 p.m.-6:55 a.m.

1 stop27h 10m

Phnom Penh Pochentong

Sat 18/10

8:30 a.m.-6:45 p.m.

1 stop16h 15m

C$ 1,021

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Thu 5/3

8:50 a.m.-6:30 a.m.

1 stop14h 40m

Phnom Penh Pochentong

Thu 12/3

7:50 p.m.-6:40 a.m.

1 stop17h 50m

C$ 1,028

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 10/11

8:55 p.m.-6:25 p.m.

1 stop14h 30m

Phnom Penh Pochentong

Mon 8/12

7:55 a.m.-6:40 a.m.

1 stop29h 45m

C$ 1,033

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sat 11/10

8:50 p.m.-6:55 a.m.

2 stops28h 05m

Phnom Penh Pochentong

Sat 18/10

8:30 a.m.-6:45 p.m.

1 stop16h 15m

C$ 1,410

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 2/2

6:00 a.m.-6:30 a.m.

2 stops17h 30m

Phnom Penh Pochentong

Mon 16/2

7:55 a.m.-6:10 p.m.

1 stop17h 15m

C$ 1,572

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$ 972, 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$ 1,074.

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$ 1,310 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$ 1,107 on momondo.

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

You could potentially save up to 6% on your flight if you consider stops on a London to Phnom Penh flight.

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

As of September 2025, prices for London to Phnom Penh flights are approximately 25% cheaper 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

Direct flights

None
There are no direct flights from London to Phnom Penh. There are no popular flight routes from London to Phnom Penh.
Search flight deals

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

    The distance between London and Phnom Penh Pochentong is about 10009.6 km. 14h 30m 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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