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Cheap flights from the United Kingdom to Phnom Penh from £281

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Phnom Penh departing on 1/10. 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 the United Kingdom to Phnom Penh

Recent return flight deals from the United Kingdom to Phnom Penh

Air China Logo
20:25 - 23:10LHR-PNH
19h 45m1 stop
Air China Logo
00:25 - 17:50PNH-LHR
24h 25m1 stop
£400Air China
Find Deal
Mon, 24 Nov - Sun, 7 Dec
Air China Logo
17:40 - 23:10LHR-PNH
22h 30m1 stop
Air China Logo
00:25 - 17:50PNH-LHR
24h 25m1 stop
£400Air China
Find Deal
Mon, 3 Nov - Sat, 6 Dec
China Southern Logo
21:30 - 14:35LHR-PNH
34h 05m2 stops
China Southern Logo
15:50 - 18:15PNH-LHR
33h 25m1 stop
£470China Southern
Find Deal
Sat, 1 Nov - Thu, 20 Nov
China Southern Logo
21:30 - 10:50LHR-PNH
30h 20m2 stops
China Southern Logo
08:00 - 18:15PNH-LHR
17h 15m1 stop
£470China Southern
Find Deal
Tue, 28 Oct - Fri, 14 Nov
Singapore Airlines Logo
10:00 - 13:10LGW-PNH
21h 10m1 stop
Singapore Airlines Logo
18:55 - 06:40PNH-LGW
17h 45m1 stop
£595Singapore Airlines
Find Deal
Thu, 9 Oct - Wed, 22 Oct
Singapore Airlines Logo
10:00 - 13:10LGW-PNH
21h 10m1 stop
Singapore Airlines Logo
14:05 - 06:40PNH-LGW
22h 35m1 stop
£604Singapore Airlines
Find Deal
Wed, 17 Sep - Wed, 1 Oct
Qatar Airways Logo
15:10 - 16:15BHX-PNH
19h 05m2 stops
Qatar Airways Logo
17:40 - 13:40PNH-BHX
26h 00m2 stops
£708Qatar Airways
Find Deal
Wed, 1 Oct - Tue, 21 Oct
Qatar Airways Logo
08:15 - 16:15MAN-PNH
26h 00m1 stop
Qatar Airways Logo
17:40 - 13:15PNH-MAN
25h 35m1 stop
£798Qatar Airways
Find Deal
Wed, 10 Sep - Sun, 28 Sep
Emirates Logo
21:10 - 16:35STN-PNH
37h 25m2 stops
Emirates Logo
20:50 - 12:55PNH-STN
22h 05m2 stops
£812Emirates
Find Deal
Mon, 1 Sep - Mon, 8 Sep
Emirates Logo
21:10 - 16:35STN-PNH
37h 25m2 stops
Emirates Logo
20:50 - 12:55PNH-STN
22h 05m2 stops
£893Emirates
Find Deal
Sat, 23 Aug - Wed, 3 Sep

Air China flights from United Kingdom to Phnom Penh

Our best Air China deals on United Kingdom to Phnom Penh flight tickets
Air China
24 Nov
LHR20:25London Heathrow
19h 45m
1 stop
PNH23:10Phnom Penh Pochentong
7 Dec
PNH00:25Phnom Penh Pochentong
24h 25m
1 stop
LHR17:50London Heathrow
£400
Find similar
Air China
3 Nov
LHR17:40London Heathrow
22h 30m
1 stop
PNH23:10Phnom Penh Pochentong
6 Dec
PNH00:25Phnom Penh Pochentong
24h 25m
1 stop
LHR17:50London Heathrow
£400
Find similar
Air China
26 Nov
LHR17:40London Heathrow
22h 30m
1 stop
PNH23:10Phnom Penh Pochentong
9 Dec
PNH00:25Phnom Penh Pochentong
24h 25m
1 stop
LHR17:50London Heathrow
£401
Find similar

China Eastern flights from United Kingdom to Phnom Penh

Our best China Eastern deals on United Kingdom to Phnom Penh flight tickets
China Eastern
1 Sept
LGW18:05London Gatwick
23h 10m
1 stop
PNH23:15Phnom Penh Pochentong
7 Sept
PNH00:10Phnom Penh Pochentong
21h 00m
1 stop
LGW15:10London Gatwick
£541
Find similar
China Eastern
1 Sept
LGW11:35London Gatwick
29h 40m
1 stop
PNH23:15Phnom Penh Pochentong
8 Sept
PNH12:40Phnom Penh Pochentong
32h 20m
3 stops
LGW15:00London Gatwick
£553
Find similar
China Eastern
24 Nov
LGW17:00London Gatwick
34h 00m
2 stops
PNH10:00Phnom Penh Pochentong
12 Dec
PNH11:05Phnom Penh Pochentong
50h 25m
2 stops
LGW06:30London Gatwick
£558
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 279,928 searches. Data last updated 5 August 2025.
Use the filters below to find and compare flights from the United Kingdom to Phnom Penh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 24/11

20:25-23:10

1 stop19h 45m

Phnom Penh Pochentong

Sun 7/12

00:25-17:50

1 stop24h 25m

£400

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 3/11

17:40-23:10

1 stop22h 30m

Phnom Penh Pochentong

Sat 6/12

00:25-17:50

1 stop24h 25m

£400

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sat 1/11

21:30-14:35

2 stops34h 05m

Phnom Penh Pochentong

Thu 20/11

15:50-18:15

1 stop33h 25m

£470

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Tue 28/10

21:30-10:50

2 stops30h 20m

Phnom Penh Pochentong

Fri 14/11

08:00-18:15

1 stop17h 15m

£470

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Thu 9/10

10:00-13:10

1 stop21h 10m

Phnom Penh Pochentong

Wed 22/10

18:55-06:40

1 stop17h 45m

£595

LondonPhnom Penh

LGW - PNH

LGWPNH

London Gatwick

Wed 17/9

10:00-13:10

1 stop21h 10m

Phnom Penh Pochentong

Wed 1/10

14:05-06:40

1 stop22h 35m

£604

BirminghamPhnom Penh

BHX - PNH

BHXPNH

Birmingham

Wed 1/10

15:10-16:15

2 stops19h 05m

Phnom Penh Pochentong

Tue 21/10

17:40-13:40

2 stops26h 00m

£708

ManchesterPhnom Penh

MAN - PNH

MANPNH

Manchester

Wed 10/9

08:15-16:15

1 stop26h 00m

Phnom Penh Pochentong

Sun 28/9

17:40-13:15

1 stop25h 35m

£798

LondonPhnom Penh

STN - PNH

STNPNH

London Stansted

Mon 1/9

21:10-16:35

2 stops37h 25m

Phnom Penh Pochentong

Mon 8/9

20:50-12:55

2 stops22h 05m

£812

LondonPhnom Penh

STN - PNH

STNPNH

London Stansted

Sat 23/8

21:10-16:35

2 stops37h 25m

Phnom Penh Pochentong

Wed 3/9

20:50-12:55

2 stops22h 05m

£893

Flights are sorted by cheapest return 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 United Kingdom 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 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 United Kingdom averaging around £555.

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 £625. 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 £727.

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

Our data shows that the cheapest United Kingdom 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 £533. At midday is when there is more demand to fly to Phnom Penh, so prices are often more expensive at around £820 per ticket.

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

You are more likely to see cheaper flights to Phnom Penh from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Phnom Penh for around £716 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phnom Penh from United Kingdom for as low as £614 on momondo.

Can stopping save me money on United Kingdom to Phnom Penh flights?

You could potentially save up to 12% on your flight if you consider stops on a United Kingdom to Phnom Penh flight.

Cheap United Kingdom to Phnom Penh flight deals and tips

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

Best price found

£281

Fastest flight time

15h 05m

Direct flights

None

Airports in Phnom Penh

1 airport
The best one-way flight to Phnom Penh from United Kingdom in the past 72 hours is £281. The best return flight deal from United Kingdom to Phnom Penh found on momondo in the last 72 hours is £400.
The fastest flight from United Kingdom to Phnom Penh takes 15h 05m
There are no direct flights from United Kingdom to Phnom Penh. Popular non-direct routes for this connection are London Gatwick Airport - Phnom Penh Pochentong Airport, London Heathrow Airport - Phnom Penh Pochentong Airport and Manchester Airport - Phnom Penh Pochentong Airport.
There is 1 airport near Phnom Penh: Phnom Penh Pochentong (PNH)
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  • When did momondo last update prices for flights from United Kingdom to Phnom Penh Pochentong Airport?

    Prices for flights from United Kingdom to Phnom Penh Pochentong Airport are refreshed on a daily basis.

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

  • How old do you have to be to fly from United Kingdom 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 United Kingdom to Phnom Penh Pochentong Airport.

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

    The necessary travel and health documents for your Phnom Penh Pochentong Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from United Kingdom to Phnom Penh

Compare and see reviews for airlines that fly from United Kingdom to Phnom Penh with momondo
Airline
Rating
Free Cancellation
Price
China SouthernPriceFrom £366Free CancellationRating
7.6
104 reviews
Search China Southern flights
Shenzhen AirlinesPriceFrom £387Free CancellationRating
6.8
15 reviews
Search Shenzhen Airlines flights
Air ChinaPriceFrom £423Free CancellationRating
7.3
93 reviews
Search Air China flights
Qatar AirwaysPriceFrom £468Free CancellationRating
7.4
3,608 reviews
Search Qatar Airways flights
China EasternPriceFrom £518Free CancellationRating
7.2
159 reviews
Search China Eastern flights
Etihad AirwaysPriceFrom £522Free CancellationRating
7.4
1,232 reviews
Search Etihad Airways flights
Singapore AirlinesPriceFrom £571Free CancellationRating
8.1
1,339 reviews
Search Singapore Airlines flights
Malaysia AirlinesPriceFrom £603Free CancellationRating
7.4
274 reviews
Search Malaysia Airlines flights
British AirwaysPriceFrom £623Free CancellationRating
6.6
7,235 reviews
Search British Airways flights
EmiratesPriceFrom £661Free CancellationRating
8.1
3,303 reviews
Search Emirates flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United Kingdom to Phnom Penh. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for United Kingdom to Phnom Penh flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between United Kingdom and Phnom Penh by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from United Kingdom to Phnom Penh now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Phnom Penh and let you know when they change.

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