S$437 Cheap Flights from Phnom Penh to London

View S$437 flight on Tue, 12 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$437 for one-way flights and S$1,174 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Southern Airlines
Sun, 7 Sep - Mon, 29 Sep
PNH
Phnom Penh
LHR
London
S$1,174 Return, found 3 days ago
S$1,174
Return
found 3 days ago
Select China Southern Airlines flight, departing Sun, 7 Sep from Phnom Penh to London, returning Mon, 29 Sep, priced at S$1,174 found 3 days ago
China Southern Airlines
Sun, 21 Dec - Fri, 2 Jan
PNH
Phnom Penh
LHR
London
S$1,266 Return, found 12 hours ago
S$1,266
Return
found 12 hours ago
Select China Southern Airlines flight, departing Sun, 21 Dec from Phnom Penh to London, returning Fri, 2 Jan, priced at S$1,266 found 12 hours ago
Emirates
Fri, 19 Sep - Sun, 28 Sep
PNH
Phnom Penh
LHR
London
S$1,320 Return, found 13 hours ago
S$1,320
Return
found 13 hours ago
Select Emirates flight, departing Fri, 19 Sep from Phnom Penh to London, returning Sun, 28 Sep, priced at S$1,320 found 13 hours ago
China Eastern Airlines
Sun, 21 Dec - Fri, 2 Jan
PNH
Phnom Penh
LHR
London
S$1,337 Return, found 12 hours ago
S$1,337
Return
found 12 hours ago
Select China Eastern Airlines flight, departing Sun, 21 Dec from Phnom Penh to London, returning Fri, 2 Jan, priced at S$1,337 found 12 hours ago
China Eastern Airlines
Fri, 31 Oct - Fri, 7 Nov
PNH
Phnom Penh
LHR
London
S$1,338 Return, found 5 days ago
S$1,338
Return
found 5 days ago
Select China Eastern Airlines flight, departing Fri, 31 Oct from Phnom Penh to London, returning Fri, 7 Nov, priced at S$1,338 found 5 days ago
China Southern Airlines
Fri, 31 Oct - Fri, 7 Nov
PNH
Phnom Penh
LHR
London
S$1,352 Return, found 5 days ago
S$1,352
Return
found 5 days ago
Select China Southern Airlines flight, departing Fri, 31 Oct from Phnom Penh to London, returning Fri, 7 Nov, priced at S$1,352 found 5 days ago
Malaysia Airlines
Fri, 19 Sep - Sun, 28 Sep
PNH
Phnom Penh
LHR
London
S$1,399 Return, found 13 hours ago
S$1,399
Return
found 13 hours ago
Select Malaysia Airlines flight, departing Fri, 19 Sep from Phnom Penh to London, returning Sun, 28 Sep, priced at S$1,399 found 13 hours ago
Asiana Airlines
Sun, 7 Sep - Mon, 29 Sep
PNH
Phnom Penh
LHR
London
S$1,423 Return, found 3 days ago
S$1,423
Return
found 3 days ago
Select Asiana Airlines flight, departing Sun, 7 Sep from Phnom Penh to London, returning Mon, 29 Sep, priced at S$1,423 found 3 days ago
Cathay Pacific
Sun, 7 Sep - Mon, 29 Sep
PNH
Phnom Penh
LHR
London
S$1,498 Return, found 3 days ago
S$1,498
Return
found 3 days ago
Select Cathay Pacific flight, departing Sun, 7 Sep from Phnom Penh to London, returning Mon, 29 Sep, priced at S$1,498 found 3 days ago
China Airlines
Sun, 7 Sep - Mon, 29 Sep
PNH
Phnom Penh
LHR
London
S$1,581 Return, found 3 days ago
S$1,581
Return
found 3 days ago
Select China Airlines flight, departing Sun, 7 Sep from Phnom Penh to London, returning Mon, 29 Sep, priced at S$1,581 found 3 days ago

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

March is typically the cheapest month to fly

From S$854 - S$1,462 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, China Airlines, China Eastern Airlines, China Southern Airlines, EVA Airways, Emirates, Korean Air, Malaysia Airlines, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Vietnam Airlines
Return price
S$1,173
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, Thai Airways International, China Southern Airlines, Emirates, Vietnam Airlines, China Airlines, Finnair, EVA Airways, Malaysia Airlines, Asiana Airlines, Cathay Pacific. 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$437 and roundtrip prices from S$1,174*.
 

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$1,174. 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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