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Cheap flights from Phnom Penh to the United Kingdom from £241

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 the United Kingdom departing on 21/10. 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 Phnom Penh to the United Kingdom

Cheap return flights

China Southern Logo
15:50 - 18:15PNH-LHR
33h 25m1 stop
China Southern Logo
21:30 - 10:50LHR-PNH
30h 20m2 stops
£513China Southern
Find Deal
Wed, 29 Oct - Sun, 9 Nov
China Eastern Logo
00:10 - 15:10PNH-LGW
21h 00m1 stop
China Eastern Logo
18:40 - 23:15LGW-PNH
22h 35m1 stop
£516China Eastern
Find Deal
Thu, 14 Aug - Fri, 15 Aug
China Southern Logo
08:00 - 17:55PNH-LHR
40h 55m2 stops
China Southern Logo
22:00 - 14:35LHR-PNH
33h 35m1 stop
£527China Southern
Find Deal
Wed, 29 Oct - Sat, 8 Nov
China Eastern Logo
00:10 - 15:00PNH-LGW
20h 50m1 stop
China Eastern Logo
11:35 - 23:15LGW-PNH
29h 40m1 stop
£529China Eastern
Find Deal
Wed, 13 Aug - Thu, 21 Aug
Air China Logo
00:25 - 05:35PNH-LGW
36h 10m1 stop
Air China Logo
11:35 - 23:10LGW-PNH
28h 35m1 stop
£541Air China
Find Deal
Mon, 22 Dec - Sun, 4 Jan
Air China Logo
00:25 - 17:50PNH-LHR
24h 25m1 stop
Air China Logo
20:25 - 23:10LHR-PNH
19h 45m1 stop
£573Air China
Find Deal
Tue, 23 Dec - Wed, 7 Jan
SWISS Logo
18:55 - 18:45PNH-LCY
29h 50m2 stops
SWISS Logo
08:10 - 08:40LCY-PNH
42h 30m2 stops
£867SWISS
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Emirates Logo
20:50 - 20:15PNH-EDI
29h 25m2 stops
Emirates Logo
21:50 - 16:35EDI-PNH
36h 45m2 stops
£926Emirates
Find Deal
Mon, 25 Aug - Sat, 30 Aug
Emirates Logo
20:50 - 20:15PNH-EDI
29h 25m2 stops
Emirates Logo
21:50 - 16:35EDI-PNH
36h 45m2 stops
£927Emirates
Find Deal
Mon, 25 Aug - Sat, 30 Aug
SWISS Logo
19:40 - 17:05PNH-LCY
28h 25m2 stops
SWISS Logo
17:50 - 08:35LCY-PNH
31h 45m2 stops
£996SWISS
Find Deal
Thu, 25 Dec - Mon, 5 Jan

Air China flights from Phnom Penh to United Kingdom

Our best Air China deals on Phnom Penh to United Kingdom flight tickets
Air China
22 Dec
PNH00:25Phnom Penh Pochentong
36h 10m
1 stop
LGW05:35London Gatwick
4 Jan
LGW11:35London Gatwick
28h 35m
1 stop
PNH23:10Phnom Penh Pochentong
£541
Find similar
Air China
23 Dec
PNH00:25Phnom Penh Pochentong
24h 25m
1 stop
LHR17:50London Heathrow
7 Jan
LHR20:25London Heathrow
19h 45m
1 stop
PNH23:10Phnom Penh Pochentong
£573
Find similar
Air China
25 Dec
PNH00:25Phnom Penh Pochentong
24h 25m
1 stop
LHR17:50London Heathrow
5 Jan
LHR17:40London Heathrow
22h 30m
1 stop
PNH23:10Phnom Penh Pochentong
£603
Find similar

China Southern flights from Phnom Penh to United Kingdom

Our best China Southern deals on Phnom Penh to United Kingdom flight tickets
China Southern
29 Oct
PNH15:50Phnom Penh Pochentong
33h 25m
1 stop
LHR18:15London Heathrow
9 Nov
LHR21:30London Heathrow
30h 20m
2 stops
PNH10:50Phnom Penh Pochentong
£513
Find similar
China Southern
29 Oct
PNH08:00Phnom Penh Pochentong
40h 55m
2 stops
LHR17:55London Heathrow
8 Nov
LHR22:00London Heathrow
33h 35m
1 stop
PNH14:35Phnom Penh Pochentong
£527
Find similar
China Southern
19 Dec
PNH08:00Phnom Penh Pochentong
17h 15m
1 stop
LHR18:15London Heathrow
2 Jan
LHR22:00London Heathrow
29h 50m
1 stop
PNH10:50Phnom Penh Pochentong
£544
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Phnom Penh to United Kingdom 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 2 August 2025.
Use the filters below to find and compare flights from Phnom Penh to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Wed 29/10

15:50-18:15

1 stop33h 25m

London Heathrow

Sun 9/11

21:30-10:50

2 stops30h 20m

£513

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Thu 14/8

00:10-15:10

1 stop21h 00m

London Gatwick

Fri 15/8

18:40-23:15

1 stop22h 35m

£516

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Wed 29/10

08:00-17:55

2 stops40h 55m

London Heathrow

Sat 8/11

22:00-14:35

1 stop33h 35m

£527

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Wed 13/8

00:10-15:00

1 stop20h 50m

London Gatwick

Thu 21/8

11:35-23:15

1 stop29h 40m

£529

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Mon 22/12

00:25-05:35

1 stop36h 10m

London Gatwick

Sun 4/1

11:35-23:10

1 stop28h 35m

£541

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Tue 23/12

00:25-17:50

1 stop24h 25m

London Heathrow

Wed 7/1

20:25-23:10

1 stop19h 45m

£573

Phnom PenhLondon

PNH - LCY

PNHLCY

Phnom Penh Pochentong

Mon 15/9

18:55-18:45

2 stops29h 50m

London City

Mon 22/9

08:10-08:40

2 stops42h 30m

£867

Phnom PenhEdinburgh

PNH - EDI

PNHEDI

Phnom Penh Pochentong

Mon 25/8

20:50-20:15

2 stops29h 25m

Edinburgh Turnhouse

Sat 30/8

21:50-16:35

2 stops36h 45m

£926

Phnom PenhEdinburgh

PNH - EDI

PNHEDI

Phnom Penh Pochentong

Mon 25/8

20:50-20:15

2 stops29h 25m

Edinburgh Turnhouse

Sat 30/8

21:50-16:35

2 stops36h 45m

£927

Phnom PenhLondon

PNH - LCY

PNHLCY

Phnom Penh Pochentong

Thu 25/12

19:40-17:05

2 stops28h 25m

London City

Mon 5/1

17:50-08:35

2 stops31h 45m

£996

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Phnom Penh to United Kingdom

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 United Kingdom?

The cheapest month to fly to United Kingdom from Phnom Penh is in November. Flight prices, which tend to average around £550, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of November, then departing from Phnom Penh during the month March is also very affordable. Most momondo users find prices during this month for around £584.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Phnom Penh to United Kingdom is on a Sunday. Travellers who choose to depart for United Kingdom on a Sunday will often find tickets for as low as £583. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Phnom Penh to United Kingdom for around £859.

What is the cheapest time of day to depart on your flight to United Kingdom?

The cheapest time of day to fly to United Kingdom is in the afternoon when flights can be purchased for as low as £641. Try not to purchase tickets in the evening because they tend to be around £752. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from Phnom Penh when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £785 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Phnom Penh for as low as £616 on momondo.

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

You could potentially save up to 13% on your flight if you consider stops on a Phnom Penh to United Kingdom flight.

Cheap Phnom Penh to United Kingdom flight deals and tips

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

Best price found

£241

Fastest flight time

15h 35m

Direct flights

None

Airports in United Kingdom

6 airports
The best one-way flight to United Kingdom from Phnom Penh in the past 72 hours is £241. The best return flight deal from Phnom Penh to United Kingdom found on momondo in the last 72 hours is £513.
The fastest flight from Phnom Penh to United Kingdom takes 15h 35m
There are no direct flights from Phnom Penh to United Kingdom. Popular non-direct routes for this connection are Phnom Penh Pochentong Airport - London Gatwick Airport, Phnom Penh Pochentong Airport - London Heathrow Airport and Phnom Penh Pochentong Airport - Glasgow Intl Airport.
There are 6 airports near United Kingdom: London City (LCY), London Heathrow (LHR), Manchester (MAN), London Stansted (STN), London Gatwick (LGW), Glasgow Intl (GLA)
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  • When did momondo last update prices for flights from Phnom Penh Pochentong Airport to United Kingdom?

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Phnom Penh Pochentong Airport to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to United Kingdom from Phnom Penh.

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

Yes. momondo enables you to select and highlight flights to United Kingdom from Phnom Penh with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to United Kingdom from Phnom Penh.

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

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

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