How long is the flight from Phnom Penh to London?

A quick flight from Phnom Penh to London can take about 17h 15m. Etihad Airways provides one of the quickest options available for as low as £635. There are 6232 mi between Phnom Penh and London.

What is the cheapest airline to fly from Phnom Penh to London round-trip?

China Southern, at £477, was found to be the cheapest airline from Phnom Penh to London.. China Southern is currently priced 30% below the average price you’ll pay for this route.

What is the cheapest day to fly from Phnom Penh to London?

Travellers seeking maximum savings on their Phnom Penh to London flight should consider departing on Friday mornings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Phnom Penh to London?

When deciding which route to take from Phnom Penh to London consider Phnom Penh Pochentong - London Heathrow, Phnom Penh Pochentong - London City or Phnom Penh Pochentong - London Gatwick as they are the most popular.

What is the cheapest day to fly round-trip from Phnom Penh to London?

Users have found that leaving on a Saturday can be a cost-effective option. It’s possible to save up to 47% on your flight compared to booking on days when demand is much higher.

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

To save on the cost of your flight from Phnom Penh to London, book at least 45 days before your planned departure. Booking around this time can save you about 19% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £563 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £563.

What is the cheapest month to fly from Phnom Penh to London?

Flights from Phnom Penh to London lean towards being more expensive in July. Prices are generally better when you fly from Phnom Penh to London in November, with the cheapest ticket starting at £448.

What is the cheapest time of day to fly from PNH to LON?

It’s optimal to fly from Phnom Penh to London at midday. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight in the afternoon.

What airport do you fly from for flights from Phnom Penh to London?

Phnom Penh Pochentong (PNH) is the airport you will fly out of if you book a flight from Phnom Penh to London. You should not have trouble finding flights to London from Pochentong; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Phnom Penh airport to London. It is only a 5.0 mi journey to Pochentong (PNH) from Phnom Penh’s city center.

Can I find deals for flights from Phnom Penh to London that include hotel bookings?

Yes. In addition to deals on Phnom Penh to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Phnom Penh to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phnom Penh to London.

Can I find deals for business class flights from Phnom Penh to London?

Yes. Cheapflights offers flight deals from Phnom Penh to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£205+ Cheap Flights from Phnom Penh to London

Q: How much does it cost for a return flight from Phnom Penh to London?

Airfare is below average for this route at the moment. Phnom Penh to London flights typically cost between £648 and £735 in December. The cheapest return flight price found within the last 3 days was £635 on Etihad Airways (12 Dec-2 Jan).

Cheapflights Tip: The best prices from Phnom Penh Pochentong to London are usually found in November or March, booked 44 days in advance, depart on a Sunday or Friday and return on a Monday

Cheap flight deals from Phnom Penh to London

Round-trip from	£635
One-way from	£205
Popular in	July
Cheapest in	November
Average price	£676

Etihad Airways
12/12-2/1
2 total stops
38h 45m total
Phnom Penh to London

Search Deals

Etihad Airways
4/10
1 total stop
34h 15m total
Phnom Penh to London

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£89 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Phnom Penh to London

Cheapest flights from Phnom Penh to London
Explore the most affordable flight options available from Phnom Penh to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Fri 12/1207:55PNH - LHR

1 stop17h 15mEtihad Airways

Fri 2/113:55LHR - PNH

1 stop21h 30mEtihad Airways

Deal found 14/9£635

Fri 19/1207:55PNH - LHR

1 stop37h 35mEtihad Airways

Fri 2/108:50LHR - PNH

1 stop26h 35mEtihad Airways

Deal found 14/9£730

Fri 12/1207:55PNH - STN

3 stops30h 55mMultiple Airlines

Sat 3/118:55STN - PNH

2 stops28h 35mMultiple Airlines

Deal found 14/9£829

Thu 30/1007:55PNH - STN

3 stops30h 55mMultiple Airlines

Thu 6/1121:35STN - PNH

3 stops37h 50mMultiple Airlines

Deal found 15/9£852

Fri 12/1207:55PNH - LGW

3 stops36h 20mMultiple Airlines

Sat 3/119:35LGW - PNH

2 stops27h 55mMultiple Airlines

Deal found 14/9£858

Thu 30/1007:55PNH - LGW

3 stops32h 20mMultiple Airlines

Thu 6/1116:05LGW - PNH

3 stops43h 20mMultiple Airlines

Deal found 15/9£861

Fri 12/1207:55PNH - STN

3 stops30h 55mMultiple Airlines

Fri 2/109:00STN - PNH

2 stops26h 25mMultiple Airlines

Deal found 14/9£867

Fri 12/1207:55PNH - LHR

2 stops31h 30mMultiple Airlines

Sat 3/120:55LHR - PNH

1 stop26h 35mMultiple Airlines

Deal found 14/9£873

Fri 12/1207:55PNH - LGW

2 stops21h 15mMultiple Airlines

Fri 2/106:25LGW - PNH

2 stops29h 00mMultiple Airlines

Deal found 14/9£876

Fri 12/1207:55PNH - LHR

2 stops19h 55mMultiple Airlines

Fri 2/115:30LHR - PNH

2 stops19h 55mMultiple Airlines

Deal found 14/9£882

Mon 15/1207:55PNH - LHR

1 stop37h 35mMultiple Airlines

Tue 13/119:45LHR - PNH

2 stops39h 40mMultiple Airlines

Deal found 13/9£930

Fri 19/1207:55PNH - LHR

1 stop37h 35mMultiple Airlines

Fri 2/110:45LHR - PNH

2 stops24h 40mMultiple Airlines

Deal found 14/9£947

Best flights from Phnom Penh to London
Discover carefully curated flight deals from Phnom Penh to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2025.

Fri 12/1207:55PNH - LHR

1 stop17h 15mEtihad Airways

Fri 2/113:55LHR - PNH

1 stop21h 30mEtihad Airways

Deal found 14/9£635

Fri 12/1207:55PNH - STN

3 stops30h 55mMultiple Airlines

Sat 3/118:55STN - PNH

2 stops28h 35mMultiple Airlines

Deal found 14/9£829

Fri 12/1207:55PNH - LHR

1 stop17h 15mEtihad Airways

Sat 3/120:55LHR - PNH

1 stop26h 35mEtihad Airways

Deal found 14/9£635

Thu 12/319:50PNH - LHR

1 stop17h 50mEtihad Airways

Mon 16/308:50LHR - PNH

1 stop14h 40mEtihad Airways

Deal found 12/9£665

Thu 30/1007:55PNH - STN

3 stops30h 55mMultiple Airlines

Thu 6/1121:35STN - PNH

3 stops37h 50mMultiple Airlines

Deal found 15/9£852

Fri 19/1207:55PNH - LHR

1 stop17h 15mEtihad Airways

Fri 2/120:55LHR - PNH

1 stop14h 30mEtihad Airways

Deal found 13/9£729

Fri 12/1207:55PNH - LGW

3 stops36h 20mMultiple Airlines

Sat 3/119:35LGW - PNH

2 stops27h 55mMultiple Airlines

Deal found 14/9£858

Sat 13/1219:50PNH - LHR

1 stop17h 50mEtihad Airways

Sat 27/1213:55LHR - PNH

1 stop33h 35mEtihad Airways

Deal found 13/9£747

Thu 30/1007:55PNH - LGW

3 stops32h 20mMultiple Airlines

Thu 6/1116:05LGW - PNH

3 stops43h 20mMultiple Airlines

Deal found 15/9£861

Fri 12/1207:55PNH - LGW

3 stops36h 20mMultiple Airlines

Fri 2/106:25LGW - PNH

2 stops29h 00mMultiple Airlines

Deal found 14/9£866

Fri 12/1207:55PNH - STN

3 stops30h 55mMultiple Airlines

Fri 2/109:00STN - PNH

2 stops26h 25mMultiple Airlines

Deal found 14/9£867

Fri 12/1207:55PNH - LHR

2 stops31h 30mMultiple Airlines

Fri 2/120:55LHR - PNH

1 stop14h 30mMultiple Airlines

Deal found 14/9£873

Last-minute flights from Phnom Penh to London
Discover last-minute flight deals from Phnom Penh to London. Data last updated 16 September 2025 and is based on user searches.

Tue 28/1007:55PNH - LGW

2 stops30h 55mMultiple Airlines

Tue 4/1117:45LGW - PNH

3 stops41h 40mMultiple Airlines

Deal found 13/9£1,034

Thu 30/1007:55PNH - STN

3 stops30h 55mMultiple Airlines

Thu 6/1121:35STN - PNH

3 stops37h 50mMultiple Airlines

Deal found 15/9£852

Thu 30/1007:55PNH - LGW

3 stops32h 20mMultiple Airlines

Thu 6/1116:05LGW - PNH

3 stops43h 20mMultiple Airlines

Deal found 15/9£861

Thu 30/1007:55PNH - LHR

3 stops31h 10mMultiple Airlines

Thu 6/1106:35LHR - PNH

2 stops16h 55mMultiple Airlines

Deal found 15/9£1,013

One-way flights from Phnom Penh to London
Search for one-way flight options from Phnom Penh to London. Find affordable one-way fares based on user searches. Data last updated 16 September 2025.

Sat 4/1008:30PNH - LHR

1 stop34h 15mEtihad Airways

Deal found 13/9£205

Tue 14/1008:30PNH - LHR

1 stop34h 15mEtihad Airways

Deal found 13/9£210

Mon 20/1008:30PNH - LHR

1 stop28h 30mEtihad Airways

Deal found 13/9£243

Tue 14/1008:30PNH - STN

2 stops29h 20mMultiple Airlines

Deal found 13/9£260

Tue 14/1008:30PNH - LGW

2 stops39h 40mMultiple Airlines

Deal found 13/9£260

Sat 4/1008:30PNH - LHR

2 stops30h 40mMultiple Airlines

Deal found 13/9£278

Tue 14/1013:55PNH - LHR

2 stops34h 45mMultiple Airlines

Deal found 13/9£288

Mon 20/1013:55PNH - LHR

3 stops30h 50mMultiple Airlines

Deal found 13/9£304

Tue 14/1008:30PNH - LCY

2 stops31h 35mMultiple Airlines

Deal found 13/9£323

Mon 17/1107:55PNH - LHR

2 stops20h 05mMultiple Airlines

Deal found 13/9£405

Mon 17/1107:55PNH - LHR

1 stop17h 15mEtihad Airways

Deal found 13/9£418

Sat 15/1119:50PNH - LHR

1 stop17h 50mEtihad Airways

Deal found 14/9£425

Fly from

Fly to

Route

Depart

Return

Price

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Fri 12/12

07:55-18:10

1 stop17h 15m

London Heathrow

Fri 2/1

13:55-18:25

1 stop21h 30m

£635

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Fri 12/12

07:55-18:10

1 stop17h 15m

London Heathrow

Sat 3/1

20:55-06:30

1 stop26h 35m

£635

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 12/3

19:50-06:40

1 stop17h 50m

London Heathrow

Mon 16/3

08:50-06:30

1 stop14h 40m

£665

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Fri 19/12

07:55-18:10

1 stop17h 15m

London Heathrow

Fri 2/1

20:55-18:25

1 stop14h 30m

£729

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sat 13/12

19:50-06:40

1 stop17h 50m

London Heathrow

Sat 27/12

13:55-06:30

1 stop33h 35m

£747

Phnom PenhLondon

PNH - STN

PNHSTN

Phnom Penh Pochentong

Fri 12/12

07:55-07:50

3 stops30h 55m

London Stansted

Sat 3/1

18:55-06:30

2 stops28h 35m

£829

Phnom PenhLondon

PNH - STN

PNHSTN

Phnom Penh Pochentong

Thu 30/10

07:55-07:50

3 stops30h 55m

London Stansted

Thu 6/11

21:35-18:25

3 stops37h 50m

£852

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Fri 12/12

07:55-13:15

3 stops36h 20m

London Gatwick

Sat 3/1

19:35-06:30

2 stops27h 55m

£858

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Thu 30/10

07:55-09:15

3 stops32h 20m

London Gatwick

Thu 6/11

16:05-18:25

3 stops43h 20m

£861

Phnom PenhLondon

PNH - LGW

PNHLGW

Phnom Penh Pochentong

Fri 12/12

07:55-13:15

3 stops36h 20m

London Gatwick

Fri 2/1

06:25-18:25

2 stops29h 00m

£866

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 38 results

Best time to book a flight from Phnom Penh to London

Have a flexible travel schedule? Discover the best time to fly to London from Phnom Penh with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Phnom Penh to London

How far ahead should I book a flight from Phnom Penh to London?

Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Phnom Penh to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Phnom Penh to London?

Currently, January is the cheapest month in which you can book a flight from Phnom Penh to London (average of £112). Flying from Phnom Penh to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Phnom Penh to London?

What’s the top stopover airport for flights from Phnom Penh to London?

Guangzhou (CAN) – chosen by Cheapflights users on 35% of one-stop itineraries from Phnom Penh to London on Cheapflights.

What’s the cheapest stopover airport for flights from Phnom Penh to London?

Shanghai (PVG) is the most affordable one-stop option, with an average return flight price of £486.

What’s the fastest stopover option from Phnom Penh to London?

Flights via Bangkok (BKK) have the shortest average one-way travel time for one-stop routes: 15h 57m.

Which airport typically offers the quickest stopover for flights from Phnom Penh to London?

Flights via Abu Dhabi (AUH) offer the fastest connection on this route, with an average stopover time of 1h 08m.

Reviews of airlines servicing London

See what other customers who have flown with China Southern and China Eastern from Phnom Penh to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

China Southern

7.5

Good

110 reviews

Check prices

Reviews

1 / 5

6.0

Good

Ebbi,Aug 2025

LAX - CAN

Boarding was nice the employees and the crew. They were very nice but the food maybe I don’t like it but it’s not international food. It’s more towards Chinese Tayst, which I do understand but that’s only complain. I have.

China Southern

7.5

Good

110 reviews

China Southern

7.5

Good

110 reviews

Check prices

Reviews

1 / 5

6.0

Good

Ebbi,Aug 2025

LAX - CAN

China Eastern

7.2

Good

165 reviews

China Southern

7.5

Good

110 reviews

Check prices

Reviews

1 / 5

6.0

Good

Ebbi,Aug 2025

LAX - CAN

Related info for your journey

What airport do you fly from for flights from Phnom Penh to London?
Phnom Penh Pochentong (PNH) is the airport you will fly out of if you book a flight from Phnom Penh to London. You should not have trouble finding flights to London from Pochentong; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Phnom Penh airport to London. It is only a 5.0 mi journey to Pochentong (PNH) from Phnom Penh’s city center.
How long is the flight from Phnom Penh to London?
A quick flight from Phnom Penh to London can take about 17h 15m. Etihad Airways provides one of the quickest options available for as low as £635. There are 6232 mi between Phnom Penh and London.
What is the cheapest airline to fly from Phnom Penh to London round-trip?
China Southern, at £477, was found to be the cheapest airline from Phnom Penh to London.. China Southern is currently priced 30% below the average price you’ll pay for this route.
What are the most popular routes from Phnom Penh to London?
When deciding which route to take from Phnom Penh to London consider Phnom Penh Pochentong - London Heathrow, Phnom Penh Pochentong - London City or Phnom Penh Pochentong - London Gatwick as they are the most popular.
Can I find deals for flights from Phnom Penh to London that include hotel bookings?
Yes. In addition to deals on Phnom Penh to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Phnom Penh to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phnom Penh to London.
Can I find deals for business class flights from Phnom Penh to London?
Yes. Cheapflights offers flight deals from Phnom Penh to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Phnom Penh to London?
Currently, January is the cheapest month in which you can book a flight from Phnom Penh to London (average of £112). Flying from Phnom Penh to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Phnom Penh to London

Airline	Cheapest	Average	Flexibility	On-time
China Southern	Cheapest£477	Average£562	FlexibilityNo cancel fee	On-time69%	Search China Southern flights

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How does Cheapflights help users find flights from Phnom Penh to London?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from Phnom Penh today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Phnom Penh to London?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from Phnom Penh.

Can Cheapflights find flights from Phnom Penh to London with no change fees?

Yes, we can. To see specific flights from Phnom Penh to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Phnom Penh to London become cheaper?

Yes, Cheapflights offers price alerts on Phnom Penh to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Phnom Penh to London from £205

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Phnom Penh Pochentong to London are usually found in November or March, booked 44 days in advance, depart on a Sunday or Friday and return on a Monday

Cheap flight deals from Phnom Penh to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Phnom Penh to London

Cheapest flights from Phnom Penh to LondonExplore the most affordable flight options available from Phnom Penh to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Explore the most affordable flight options available from Phnom Penh to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Phnom Penh to London that are best for you.

Best time to book a flight from Phnom Penh to London

Have a flexible travel schedule? Discover the best time to fly to London from Phnom Penh with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Phnom Penh to London

How far ahead should I book a flight from Phnom Penh to London?

Use this chart to determine the optimal time to book a return flight from Phnom Penh to London. Price data was last updated on 12 September 2025.

What is the cheapest month to book a flight from Phnom Penh to London?

How much does it cost for a return flight from Phnom Penh to London?

What’s the top stopover airport for flights from Phnom Penh to London?

Share of one-stop return flights from Phnom Penh to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from Phnom Penh to London?

Average return fare for one-stop flights from Phnom Penh to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from Phnom Penh to London?

Shortest average travel time for one-stop one-way flights from Phnom Penh to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from Phnom Penh to London?

Average stopover duration for one-stop one-way flights from Phnom Penh to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing London

See what other customers who have flown with China Southern and China Eastern from Phnom Penh to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Phnom Penh to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Phnom Penh to London?

How long is the flight from Phnom Penh to London?

What is the cheapest airline to fly from Phnom Penh to London round-trip?

What are the most popular routes from Phnom Penh to London?

Can I find deals for flights from Phnom Penh to London that include hotel bookings?

How can I find direct flights from Phnom Penh to London?

Can I find deals for business class flights from Phnom Penh to London?

What is the cheapest month to book a flight from Phnom Penh to London?

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Alternative routes for Phnom Penh to London

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Phnom Penh to London

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Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Phnom Penh to London?

Why should you use Cheapflights to find cheap flight tickets from Phnom Penh to London?

Can Cheapflights find flights from Phnom Penh to London with no change fees?

Can Cheapflights notify me if prices for flights from Phnom Penh to London become cheaper?

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Cheapest flights from Phnom Penh to London
Explore the most affordable flight options available from Phnom Penh to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.