Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Phnom Penh to London from $1,038

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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize 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 round-trip flights

Etihad Airways Logo
7:50 pm - 2:30 pmPNH-LHR
25h 40m1 stop
Etihad Airways Logo
8:55 pm - 6:25 pmLHR-PNH
14h 30m1 stop
$1,038Etihad Airways
Find Deal
Thu, Mar 12 - Mon, Mar 16
Etihad Airways Logo
7:55 am - 6:40 amPNH-LHR
29h 45m1 stop
Etihad Airways Logo
7:20 pm - 6:30 amLHR-PNH
28h 10m1 stop
$1,337Etihad Airways
Find Deal
Sat, Nov 1 - Sat, Nov 8
Multiple Airlines Logo
7:55 am - 8:05 amPNH-LHR
31h 10m3 stops
Multiple Airlines Logo
6:35 am - 6:30 amLHR-PNH
16h 55m2 stops
$1,376Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
7:55 am - 9:00 pmPNH-LHR
20h 05m2 stops
Multiple Airlines Logo
6:35 am - 6:30 amLHR-PNH
16h 55m2 stops
$1,421Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
7:55 am - 6:40 amPNH-LHR
29h 45m1 stop
Multiple Airlines Logo
8:45 pm - 6:30 amLHR-PNH
26h 45m2 stops
$1,456Multiple Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Etihad Airways Logo
7:50 pm - 5:40 pmPNH-LHR
28h 50m2 stops
Etihad Airways Logo
7:20 pm - 6:25 pmLHR-PNH
16h 05m1 stop
$1,460Etihad Airways
Find Deal
Thu, Mar 12 - Mon, Mar 16

Etihad Airways flights from Phnom Penh to London

Our best Etihad Airways deals on Phnom Penh to London flight tickets
Etihad Airways
Mar 12
PNH7:50 pmPhnom Penh Pochentong
25h 40m
1 stop
LHR2:30 pmLondon Heathrow
Mar 16
LHR8:55 pmLondon Heathrow
14h 30m
1 stop
PNH6:25 pmPhnom Penh Pochentong
$1,038
Find similar
Etihad Airways
Nov 1
PNH7:55 amPhnom Penh Pochentong
29h 45m
1 stop
LHR6:40 amLondon Heathrow
Nov 8
LHR7:20 pmLondon Heathrow
28h 10m
1 stop
PNH6:30 amPhnom Penh Pochentong
$1,337
Find similar
Etihad Airways
Mar 12
PNH7:50 pmPhnom Penh Pochentong
28h 50m
2 stops
LHR5:40 pmLondon Heathrow
Mar 16
LHR7:20 pmLondon Heathrow
16h 05m
1 stop
PNH6:25 pmPhnom Penh Pochentong
$1,460
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Phnom Penh to London 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 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Phnom Penh to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 3/12

7:50 pm-2:30 pm

1 stop25h 40m

London Heathrow

Mon 3/16

8:55 pm-6:25 pm

1 stop14h 30m

$1,038

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sat 11/1

7:55 am-6:40 am

1 stop29h 45m

London Heathrow

Sat 11/8

7:20 pm-6:30 am

1 stop28h 10m

$1,337

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 10/30

7:55 am-8:05 am

3 stops31h 10m

London Heathrow

Thu 11/6

6:35 am-6:30 am

2 stops16h 55m

$1,376

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 10/30

7:55 am-9:00 pm

2 stops20h 05m

London Heathrow

Thu 11/6

6:35 am-6:30 am

2 stops16h 55m

$1,421

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Sat 11/1

7:55 am-6:40 am

1 stop29h 45m

London Heathrow

Sat 11/8

8:45 pm-6:30 am

2 stops26h 45m

$1,456

Phnom PenhLondon

PNH - LHR

PNHLHR

Phnom Penh Pochentong

Thu 3/12

7:50 pm-5:40 pm

2 stops28h 50m

London Heathrow

Mon 3/16

7:20 pm-6:25 pm

1 stop16h 05m

$1,460

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to London from

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

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 Phnom Penh and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Phnom Penh is in November. Flight prices, which tend to average around $721, are often lower during this time because this is during the off-season. The month of March is another great option to travel to London, with average flight prices from Phnom Penh averaging around $769.

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

The cheapest day to depart from Phnom Penh to London is on a Saturday. Travelers who choose to depart for London on a Saturday will often find tickets for as low as $837. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,043. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Phnom Penh in the evening is the least expensive time of day to depart. momondo users have found prices as low as $787 when looking at flights departing in the evening. Flights to London are more costly in the afternoon, with an average ticket price of $1,145. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to London from Phnom Penh when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $1,026 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Phnom Penh for as low as $766 on momondo.

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

As of September 2025, prices for Phnom Penh to London flights are approximately 30% cheaper when compared to flights at the same time last year.

When to book flights from Phnom Penh to London

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

Cheap Phnom Penh to London (PNH to LON) flight deals and tips

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

Direct flights

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

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

    London is 6219.7 mi away from Phnom Penh Pochentong. 20h 05m is a normal flight duration for this route.

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

    Prices for flights from Phnom Penh Pochentong Airport to London are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Phnom Penh Pochentong Airport to London.

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

    The necessary travel and health documents for your London 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.

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

Best airlines flying from Phnom Penh to London

Compare and see reviews for airlines that fly from Phnom Penh to London with momondo
Airline
Rating
Free Cancellation
Price
China EasternPriceFrom $564Free CancellationRating
7.2
166 reviews
Search China Eastern flights
China SouthernPriceFrom $663Free CancellationRating
7.5
110 reviews
Search China Southern flights
Air ChinaPriceFrom $706Free CancellationRating
7.3
101 reviews
Search Air China flights
Malaysia AirlinesPriceFrom $865Free CancellationRating
7.3
278 reviews
Search Malaysia Airlines flights
Singapore AirlinesPriceFrom $921Free CancellationRating
8.1
1,367 reviews
Search Singapore Airlines flights
Thai AirwaysPriceFrom $1,120Free CancellationRating
7.8
350 reviews
Search Thai Airways flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Dover
Luton
Slough
Milton Keynes
Hayes
Guildford
Dartford
Crawley
Stansted
Chelmsford
Brentwood
Ilford
Folkestone
Colchester
Watford
Wembley
Richmond
Croydon

Why use momondo?

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

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 Phnom Penh to London for you.

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

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

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

Once all potential Phnom Penh to London 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 Phnom Penh to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Phnom Penh. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London trip

We make it super easy to schedule, organize 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 10/17
Fri 10/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport