S$733 Cheap Flights from London to Phnom Penh

View S$733 flight on Sun, 4 Jan,2026Opens in a new window

Featured airlines

Singapore Airlines
AirAsia
Scoot
Philippine Airlines
Malaysia Airlines
Thai Airways International
Asiana Airlines
Qatar Airways
Air India

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 40% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at S$733 for one-way flights and S$798 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Southern Airlines
Fri, 25 Apr - Sun, 11 May
LHR
London
PNH
Phnom Penh
S$798 Return, found 5 days ago
S$798
Return
found 5 days ago
Select China Southern Airlines flight, departing Fri, 25 Apr from London to Phnom Penh, returning Sun, 11 May, priced at S$798 found 5 days ago
Shenzhen Airlines
Fri, 25 Apr - Sun, 11 May
LHR
London
PNH
Phnom Penh
S$817 Return, found 5 days ago
S$817
Return
found 5 days ago
Select Shenzhen Airlines flight, departing Fri, 25 Apr from London to Phnom Penh, returning Sun, 11 May, priced at S$817 found 5 days ago
Oman Air
Fri, 25 Apr - Sun, 11 May
LHR
London
PNH
Phnom Penh
S$1,225 Return, found 5 days ago
S$1,225
Return
found 5 days ago
Select Oman Air flight, departing Fri, 25 Apr from London to Phnom Penh, returning Sun, 11 May, priced at S$1,225 found 5 days ago
Air China
Fri, 25 Apr - Sun, 11 May
LHR
London
PNH
Phnom Penh
S$1,299 Return, found 5 days ago
S$1,299
Return
found 5 days ago
Select Air China flight, departing Fri, 25 Apr from London to Phnom Penh, returning Sun, 11 May, priced at S$1,299 found 5 days ago
Air China
Fri, 25 Apr - Sun, 11 May
LHR
London
PNH
Phnom Penh
S$1,309 Return, found 5 days ago
S$1,309
Return
found 5 days ago
Select Air China flight, departing Fri, 25 Apr from London to Phnom Penh, returning Sun, 11 May, priced at S$1,309 found 5 days ago
Cathay Pacific
Fri, 25 Apr - Sun, 11 May
LHR
London
PNH
Phnom Penh
S$1,357 Return, found 5 days ago
S$1,357
Return
found 5 days ago
Select Cathay Pacific flight, departing Fri, 25 Apr from London to Phnom Penh, returning Sun, 11 May, priced at S$1,357 found 5 days ago
China Airlines
Fri, 25 Apr - Sun, 11 May
LHR
London
PNH
Phnom Penh
S$1,368 Return, found 5 days ago
S$1,368
Return
found 5 days ago
Select China Airlines flight, departing Fri, 25 Apr from London to Phnom Penh, returning Sun, 11 May, priced at S$1,368 found 5 days ago
Malaysia Airlines
Fri, 25 Apr - Sun, 11 May
LHR
London
PNH
Phnom Penh
S$1,437 Return, found 5 days ago
S$1,437
Return
found 5 days ago
Select Malaysia Airlines flight, departing Fri, 25 Apr from London to Phnom Penh, returning Sun, 11 May, priced at S$1,437 found 5 days ago
Air China
Fri, 25 Apr - Sun, 11 May
LHR
London
PNH
Phnom Penh
S$1,465 Return, found 5 days ago
S$1,465
Return
found 5 days ago
Select Air China flight, departing Fri, 25 Apr from London to Phnom Penh, returning Sun, 11 May, priced at S$1,465 found 5 days ago
Asiana Airlines
Fri, 25 Apr - Sun, 11 May
LHR
London
PNH
Phnom Penh
S$1,954 Return, found 5 days ago
S$1,954
Return
found 5 days ago
Select Asiana Airlines flight, departing Fri, 25 Apr from London to Phnom Penh, returning Sun, 11 May, priced at S$1,954 found 5 days ago
London to Phnom Penh route information
Origin airport
Heathrow
Destination airport
Phnom Penh Intl.
Return price
S$797
Distance
9976 km

Perfect flights from London to Phnom Penh

Your Journey from London to Phnom Penh

Start your unforgettable journey with Expedia. Our broad selection of flights from London to Phnom Penh 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 Air China, China Southern Airlines, Etihad Airways, Shenzhen Airlines, China Eastern Airlines, Vietnam Airlines, Malaysia Airlines, China Airlines, Turkish Airlines, Emirates, Cathay Pacific, Oman Air, Asiana Airlines. Our selection of flights from Heathrow to Phnom Penh Intl. 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 London to Phnom Penh Flights

Experience the joy of finding cheap flights from Heathrow to Phnom Penh Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$733 and roundtrip prices from S$798*.
 

Pre-Flight Essentials

Ensure a smooth journey from London to Phnom Penh 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 Phnom Penh

Picture yourself stepping off the plane in Phnom Penh 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 London to Phnom Penh 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 London to Phnom Penh.
 

Beyond the Flight – Exploring Phnom Penh

With Expedia, your adventure extends beyond the flight. Explore Phnom Penh 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 London to Phnom Penh 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 London to Phnom Penh 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 Heathrow Airport (LHR) to PNH?
The lowest price advertised for a round-trip flight from Heathrow Airport to Phnom Penh Airport is S$798. But you better act quick. This price is taken from 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 Heathrow Airport (LHR) to PNH?
Each airline has a different set of terms and conditions. If you decide to cancel your holiday, visit our Customer Service Portal.
How do I find cheap flights from LHR to PNH 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 Heathrow Airport to Phnom Penh Airport flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Heathrow Airport (LHR) to Phnom Penh Intl. Airport (PNH)?
With around 10,000 kilometres separating Hounslow and Cambodia, your flight will be a long one. Pack wisely and make your trip comfortable. Simple things like an extra pair of socks and a quality travel pillow can make a huge difference.
Which airlines fly direct from LHR to Phnom Penh Intl. Airport (PNH)?
At the moment, no airlines offer direct flights from London Heathrow to Phnom Penh Intl. Airport (PNH). You’ll have to book a flight with at least one stop. To score the best connections and price, lock in your fare well in advance.
Are LHR to Phnom Penh Intl. Airport (PNH) flight tickets cheaper when they're purchased at the last minute?
Flight prices are constantly going up and down, so it’s no sure thing. While last-minute flight deals between Heathrow Airport and PNH are possible, it also makes sense to monitor prices well before you fly. In fact, some carriers announce their prices up to 12 months before the departure date. Expedia is continuously updating the biggest bargains around, so keep checking back and be ready to book when the price is low.
*Available to Expedia members.