S$439 Cheap Flights from Phnom Penh to London

View S$439 flight on Wed, 27 Aug, 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$439 for one-way flights and S$1,175 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Southern Airlines
Fri, 12 Sep - Mon, 15 Sep
PNH
Phnom Penh
LHR
London
S$1,175 Return, found 6 days ago
S$1,175
Return
found 6 days ago
Select China Southern Airlines flight, departing Fri, 12 Sep from Phnom Penh to London, returning Mon, 15 Sep, priced at S$1,175 found 6 days ago
China Southern Airlines
Fri, 12 Sep - Mon, 15 Sep
PNH
Phnom Penh
LHR
London
S$1,388 Return, found 6 days ago
S$1,388
Return
found 6 days ago
Select China Southern Airlines flight, departing Fri, 12 Sep from Phnom Penh to London, returning Mon, 15 Sep, priced at S$1,388 found 6 days ago
Air China
Fri, 12 Sep - Mon, 15 Sep
PNH
Phnom Penh
LHR
London
S$1,405 Return, found 6 days ago
S$1,405
Return
found 6 days ago
Select Air China flight, departing Fri, 12 Sep from Phnom Penh to London, returning Mon, 15 Sep, priced at S$1,405 found 6 days ago
Air Cambodia
Thu, 2 Oct - Thu, 9 Oct
PNH
Phnom Penh
LHR
London
S$1,439 Return, found 4 days ago
S$1,439
Return
found 4 days ago
Select Air Cambodia flight, departing Thu, 2 Oct from Phnom Penh to London, returning Thu, 9 Oct, priced at S$1,439 found 4 days ago
Air Cambodia
Fri, 12 Sep - Mon, 15 Sep
PNH
Phnom Penh
LHR
London
S$1,445 Return, found 6 days ago
S$1,445
Return
found 6 days ago
Select Air Cambodia flight, departing Fri, 12 Sep from Phnom Penh to London, returning Mon, 15 Sep, priced at S$1,445 found 6 days ago
Air Cambodia
Thu, 2 Oct - Thu, 9 Oct
PNH
Phnom Penh
LHR
London
S$1,469 Return, found 4 days ago
S$1,469
Return
found 4 days ago
Select Air Cambodia flight, departing Thu, 2 Oct from Phnom Penh to London, returning Thu, 9 Oct, priced at S$1,469 found 4 days ago
Singapore Airlines
Thu, 2 Oct - Thu, 9 Oct
PNH
Phnom Penh
LHR
London
S$1,477 Return, found 4 days ago
S$1,477
Return
found 4 days ago
Select Singapore Airlines flight, departing Thu, 2 Oct from Phnom Penh to London, returning Thu, 9 Oct, priced at S$1,477 found 4 days ago
Air Cambodia
Fri, 12 Sep - Mon, 15 Sep
PNH
Phnom Penh
LHR
London
S$1,484 Return, found 6 days ago
S$1,484
Return
found 6 days ago
Select Air Cambodia flight, departing Fri, 12 Sep from Phnom Penh to London, returning Mon, 15 Sep, priced at S$1,484 found 6 days ago
Singapore Airlines
Thu, 2 Oct - Thu, 9 Oct
PNH
Phnom Penh
LHR
London
S$1,497 Return, found 4 days ago
S$1,497
Return
found 4 days ago
Select Singapore Airlines flight, departing Thu, 2 Oct from Phnom Penh to London, returning Thu, 9 Oct, priced at S$1,497 found 4 days ago
Swiss International Air Lines
Thu, 2 Oct - Thu, 9 Oct
PNH
Phnom Penh
LHR
London
S$1,594 Return, found 4 days ago
S$1,594
Return
found 4 days ago
Select Swiss International Air Lines flight, departing Thu, 2 Oct from Phnom Penh to London, returning Thu, 9 Oct, priced at S$1,594 found 4 days ago

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

February is typically the cheapest month to fly

From S$858 - S$1,370 per traveller.

Graph displaying average flight prices per month

Phnom Penh to London route information
Origin airport
Phnom Penh Intl.
Destination airport
Heathrow
Return price
S$1,174
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 China Eastern Airlines, Air China, Shenzhen Airlines, Etihad Airways, EVA Airways, China Airlines, China Southern Airlines, Cathay Pacific, Swiss International Air Lines, Lufthansa, Air Cambodia, Singapore 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$439 and roundtrip prices from S$1,175*.
 

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$1,175. 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.

Explore a world of travel with Expedia

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