S$445 Cheap Flights from Phnom Penh to London

View S$445 flight on Sat, 25 Oct, 2025Opens in a new window

Popular airlines from Phnom Penh Intl. Airport (PNH) to Heathrow Airport (LHR)

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Cheap Flights from Phnom Penh to London (PNH-LHR)

Prices were available within the past 7 days and start at S$445 for one-way flights and S$1,054 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Southern Airlines
Sat, 25 Oct - Sat, 8 Nov
PNH
Phnom Penh
LHR
London
S$1,054 Return, found 17 hours ago
S$1,054
Return
found 17 hours ago
Select China Southern Airlines flight, departing Sat, 25 Oct from Phnom Penh to London, returning Sat, 8 Nov, priced at S$1,054 found 17 hours ago
China Eastern Airlines
Fri, 31 Oct - Mon, 10 Nov
PNH
Phnom Penh
LHR
London
S$1,135 Return, found 23 hours ago
S$1,135
Return
found 23 hours ago
Select China Eastern Airlines flight, departing Fri, 31 Oct from Phnom Penh to London, returning Mon, 10 Nov, priced at S$1,135 found 23 hours ago
Etihad Airways
Sat, 25 Oct - Sat, 8 Nov
PNH
Phnom Penh
LHR
London
S$1,159 Return, found 17 hours ago
S$1,159
Return
found 17 hours ago
Select Etihad Airways flight, departing Sat, 25 Oct from Phnom Penh to London, returning Sat, 8 Nov, priced at S$1,159 found 17 hours ago
Singapore Airlines
Sat, 25 Oct - Sat, 8 Nov
PNH
Phnom Penh
LHR
London
S$1,336 Return, found 17 hours ago
S$1,336
Return
found 17 hours ago
Select Singapore Airlines flight, departing Sat, 25 Oct from Phnom Penh to London, returning Sat, 8 Nov, priced at S$1,336 found 17 hours ago
Emirates
Fri, 19 Sep - Sat, 27 Sep
PNH
Phnom Penh
LHR
London
S$1,380 Return, found 5 days ago
S$1,380
Return
found 5 days ago
Select Emirates flight, departing Fri, 19 Sep from Phnom Penh to London, returning Sat, 27 Sep, priced at S$1,380 found 5 days ago
Cathay Pacific
Mon, 22 Dec - Tue, 30 Dec
PNH
Phnom Penh
LHR
London
S$1,488 Return, found 5 days ago
S$1,488
Return
found 5 days ago
Select Cathay Pacific flight, departing Mon, 22 Dec from Phnom Penh to London, returning Tue, 30 Dec, priced at S$1,488 found 5 days ago
Vietnam Airlines
Sat, 25 Oct - Sat, 8 Nov
PNH
Phnom Penh
LHR
London
S$1,566 Return, found 17 hours ago
S$1,566
Return
found 17 hours ago
Select Vietnam Airlines flight, departing Sat, 25 Oct from Phnom Penh to London, returning Sat, 8 Nov, priced at S$1,566 found 17 hours ago
Asiana Airlines
Sat, 25 Oct - Sat, 8 Nov
PNH
Phnom Penh
LHR
London
S$1,578 Return, found 17 hours ago
S$1,578
Return
found 17 hours ago
Select Asiana Airlines flight, departing Sat, 25 Oct from Phnom Penh to London, returning Sat, 8 Nov, priced at S$1,578 found 17 hours ago
Thai Airways International
Fri, 15 Aug - Fri, 22 Aug
PNH
Phnom Penh
LHR
London
S$1,582 Return, found 6 days ago
S$1,582
Return
found 6 days ago
Select Thai Airways International flight, departing Fri, 15 Aug from Phnom Penh to London, returning Fri, 22 Aug, priced at S$1,582 found 6 days ago
China Airlines
Fri, 31 Oct - Mon, 10 Nov
PNH
Phnom Penh
LHR
London
S$1,588 Return, found 23 hours ago
S$1,588
Return
found 23 hours ago
Select China Airlines flight, departing Fri, 31 Oct from Phnom Penh to London, returning Mon, 10 Nov, priced at S$1,588 found 23 hours ago

Find the cheapest month to fly from Phnom Penh (PNH) to London (LHR)

March is typically the cheapest month to fly

From S$849 - S$1,454 per traveller.

Graph displaying average flight prices per month

Phnom Penh to London route information
Origin airport
Phnom Penh Intl.
Destination airport
Heathrow
Airlines serving
Asiana Airlines, British Airways, Cathay Pacific, China Airlines, China Eastern Airlines, China Southern Airlines, EVA Airways, Emirates, Etihad Airways, Finnair, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, Vietnam Airlines
Return price
S$1,054
Distance
9976 km

Perfect flights from Phnom Penh to London

Your Journey from Phnom Penh to London

Start your unforgettable journey with Expedia. Our broad selection of flights from Phnom Penh to London caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Etihad Airways, Malaysia Airlines, Thai Airways International, Emirates, Cathay Pacific, Vietnam Airlines, China Southern Airlines, China Eastern Airlines, Singapore Airlines, Asiana Airlines, China Airlines. Our selection of flights from Phnom Penh Intl. to Heathrow caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Phnom Penh to London Flights

Experience the joy of finding cheap flights from Phnom Penh Intl. to Heathrow that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$445 and roundtrip prices from S$1,054*.
 

Pre-Flight Essentials

Ensure a smooth journey from Phnom Penh to London with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant London

Picture yourself stepping off the plane in London and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Phnom Penh to London Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Phnom Penh to London.
 

Beyond the Flight – Exploring London

With Expedia, your adventure extends beyond the flight. Explore London at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Phnom Penh to London with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Phnom Penh to London with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from PNH to Heathrow Airport?
The lowest price advertised for a round-trip flight between Phnom Penh Airport and Heathrow Airport is S$1,054. But you better act quick. This figure is based on fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Phnom Penh Intl. Airport (PNH) to Heathrow Airport?
Most flights can be cancelled online, but whether you are charged a fee all comes down to your airline. If you do need to cancel your getaway, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Phnom Penh Intl. Airport (PNH) to Heathrow Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for PNH to Heathrow Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from PNH to LHR?
You'll have 10,000 kilometres to cover on the long-haul Cambodia to Hounslow route. Wear comfy clothes and consider taking a pair of noise-cancelling earphones.
Which airlines fly direct from Phnom Penh Intl. Airport (PNH) to LHR?
You won't find any airlines operating directly between Phnom Penh Airport and Heathrow Airport (LHR), so be ready to make at least one stop on your journey. A layover, whether short or long, can be a nice way to break up a trip!
Are PNH to Heathrow Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to score a great last-minute deal from Phnom Penh Airport to Heathrow Airport (LHR), but it's also possible to miss out entirely! As many airlines publish prices up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to book when you spot a good bargain. Expedia compares air carrier prices and updates flight deals frequently, so you can rest assured you're always getting the latest offers.

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