Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Phnom Penh to London from £761

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Phnom Penh to London departing on 12/3. 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
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.
Search flight deals

Find the cheapest flights from Phnom Penh to London

Cheap return flights

Etihad Airways Logo
19:50 - 14:30PNH-LHR
25h 40m1 stop
Etihad Airways Logo
20:55 - 18:25LHR-PNH
14h 30m1 stop
£761Etihad Airways
Find Deal
Thu, 12 Mar - Mon, 16 Mar
Etihad Airways Logo
07:55 - 14:30PNH-LHR
37h 35m1 stop
Etihad Airways Logo
13:55 - 18:25LHR-PNH
21h 30m1 stop
£776Etihad Airways
Find Deal
Fri, 19 Dec - Fri, 2 Jan
Etihad Airways Logo
07:55 - 14:30PNH-LHR
37h 35m1 stop
Etihad Airways Logo
13:55 - 18:25LHR-PNH
21h 30m1 stop
£778Etihad Airways
Find Deal
Fri, 19 Dec - Fri, 2 Jan
Multiple Airlines Logo
07:55 - 10:10PNH-LHR
33h 15m2 stops
Multiple Airlines Logo
20:55 - 18:25LHR-PNH
14h 30m1 stop
£996Multiple Airlines
Find Deal
Fri, 19 Dec - Fri, 2 Jan
Multiple Airlines Logo
07:55 - 08:05PNH-LHR
31h 10m3 stops
Multiple Airlines Logo
06:35 - 06:30LHR-PNH
16h 55m2 stops
£1,009Multiple Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Multiple Airlines Logo
07:55 - 18:10PNH-LHR
17h 15m1 stop
Multiple Airlines Logo
14:15 - 18:25LHR-PNH
21h 10m2 stops
£1,035Multiple Airlines
Find Deal
Fri, 19 Dec - Fri, 2 Jan
Multiple Airlines Logo
07:55 - 21:00PNH-LHR
20h 05m2 stops
Multiple Airlines Logo
06:35 - 06:30LHR-PNH
16h 55m2 stops
£1,042Multiple Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Etihad Airways Logo
19:50 - 17:40PNH-LHR
28h 50m2 stops
Etihad Airways Logo
19:20 - 18:25LHR-PNH
16h 05m1 stop
£1,071Etihad Airways
Find Deal
Thu, 12 Mar - Mon, 16 Mar
Multiple Airlines Logo
07:55 - 08:05PNH-LHR
31h 10m3 stops
Multiple Airlines Logo
06:00 - 06:30LHR-PNH
17h 30m2 stops
£1,109Multiple Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Multiple Airlines Logo
07:55 - 08:05PNH-LHR
31h 10m3 stops
Multiple Airlines Logo
06:00 - 06:30LHR-PNH
17h 30m2 stops
£1,121Multiple Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov

Etihad Airways flights from Phnom Penh to London Heathrow Airport

Our best Etihad Airways deals on Phnom Penh to London Heathrow Airport flight tickets
Etihad Airways
12 Mar
PNH19:50Phnom Penh Pochentong
25h 40m
1 stop
LHR14:30London Heathrow
16 Mar
LHR20:55London Heathrow
14h 30m
1 stop
PNH18:25Phnom Penh Pochentong
£761
Find similar
Etihad Airways
19 Dec
PNH07:55Phnom Penh Pochentong
37h 35m
1 stop
LHR14:30London Heathrow
2 Jan
LHR13:55London Heathrow
21h 30m
1 stop
PNH18:25Phnom Penh Pochentong
£776
Find similar
Etihad Airways
19 Dec
PNH07:55Phnom Penh Pochentong
37h 35m
1 stop
LHR14:30London Heathrow
2 Jan
LHR13:55London Heathrow
21h 30m
1 stop
PNH18:25Phnom Penh Pochentong
£778
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Phnom Penh to London Heathrow Airport 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 17 September 2025.
Use the filters below to find and compare flights from Phnom Penh to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 12/3

19:50-14:30

1 stop25h 40m

London Heathrow

Mon 16/3

20:55-18:25

1 stop14h 30m

£761

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Fri 19/12

07:55-14:30

1 stop37h 35m

London Heathrow

Fri 2/1

13:55-18:25

1 stop21h 30m

£776

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Fri 19/12

07:55-14:30

1 stop37h 35m

London Heathrow

Fri 2/1

13:55-18:25

1 stop21h 30m

£778

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Fri 19/12

07:55-10:10

2 stops33h 15m

London Heathrow

Fri 2/1

20:55-18:25

1 stop14h 30m

£996

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 30/10

07:55-08:05

3 stops31h 10m

London Heathrow

Thu 6/11

06:35-06:30

2 stops16h 55m

£1,009

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Fri 19/12

07:55-18:10

1 stop17h 15m

London Heathrow

Fri 2/1

14:15-18:25

2 stops21h 10m

£1,035

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 30/10

07:55-21:00

2 stops20h 05m

London Heathrow

Thu 6/11

06:35-06:30

2 stops16h 55m

£1,042

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 12/3

19:50-17:40

2 stops28h 50m

London Heathrow

Mon 16/3

19:20-18:25

1 stop16h 05m

£1,071

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 30/10

07:55-08:05

3 stops31h 10m

London Heathrow

Thu 6/11

06:00-06:30

2 stops17h 30m

£1,109

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 30/10

07:55-08:05

3 stops31h 10m

London Heathrow

Thu 6/11

06:00-06:30

2 stops17h 30m

£1,121

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

See travel insights to London from

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

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 London Heathrow Airport?

In general, August is the cheapest month to fly from Phnom Penh to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £540. The month of March is another great option to travel to London Heathrow Airport, with average flight prices from Phnom Penh averaging around £606.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Phnom Penh is on a Thursday. momondo users have found tickets for Thursday departures for as low as £546. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £805.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Phnom Penh to London Heathrow Airport in the morning for as low as £518. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £1,011 on average. Flights to London Heathrow Airport from Phnom Penh in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Phnom Penh when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £753 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Phnom Penh for as low as £562 on momondo.

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

As of September 2025, prices for Phnom Penh to London Heathrow Airport flights are approximately 7% cheaper when compared to flights at the same time last year.

When to book flights from Phnom Penh to London Heathrow Airport

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

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

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

Direct flights

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

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

    Phnom Penh Pochentong and London Heathrow are 6233.8 mi apart from one another. Flights usually cover this in 17h 15m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Phnom Penh Pochentong Airport to London Heathrow Airport were last updated today.

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

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

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Phnom Penh to London Heathrow Airport

Compare and see reviews for airlines that fly from Phnom Penh to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
China SouthernPriceFrom £475Free CancellationRating
7.5
110 reviews
Search China Southern flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Luton
Milton Keynes
Maidstone
Gatwick
Slough
Northampton
Swindon
Canterbury
Stratford-upon-Avon
Southend-on-Sea
Ipswich
Ilford
Guildford
Swanage
Poole
Colchester
Worthing
Salisbury
Chelmsford

Why use momondo?

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

It is quick and easy to find Phnom Penh to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

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

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

momondo provides multiple filters to help you find the best flight to London from Phnom Penh. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to London from Phnom Penh 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.

An easier way to manage your London Heathrow Airport 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 17/10
Fri 24/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London