PNH - LHR

Find cheap flights from Phnom Penh to London

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phnom Penh to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phnom Penh to London, as well as popular online travel agencies
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Everything you should know

Nonstop flights
Not available
There are currently no direct flights between Phnom Penh and London. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $883 (round-trip)
Shortest trip • 15h 50m (one-way)
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Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Phnom Penh to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Phnom Penh to London

Multiple Airlines Logo
PNH
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LHR
6232 mimulti-stop
Multiple Airlines Logo
LHR
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PNH
6232 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Phnom Penh to London flights

Get data-powered insights and trends into flights from Phnom Penh to London to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from Phnom Penh to London?

Percentage of 1-stop round-trip flights from Phnom Penh to London chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Bangkok (BKK) is the top choice – 73% of KAYAK users who clicked on 1-stop flights from Phnom Penh to London picked an itinerary connecting there.

What is the cheapest layover airport when flying from Phnom Penh to London?

Average round-trip price for 1-stop flights from Phnom Penh to London clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Guangzhou (CAN) offer the most affordable fares, with an average round-trip price of $883.

Which layover airport offers the shortest total travel time from Phnom Penh to London?

Shortest average total travel time for 1-stop one-way flights from Phnom Penh to London via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Bangkok (BKK) for the shortest journey. The average one-way travel time for flights connecting there is 15h 50m.

Which layover airport has the quickest connection when flying from Phnom Penh to London?

Average layover duration at different layover airports for 1-stop one-way flights from Phnom Penh to London, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Guangzhou (CAN) often has the shortest layovers from Phnom Penh to London, with an average of 3h 30m.

When to book flights from Phnom Penh to London

Are your dates flexible? Find out the best times to travel from Phnom Penh to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Phnom Penh to London flights

  • Do I need a passport to fly between Phnom Penh and London?

    Yes, you’ll need a passport to travel to London from Phnom Penh.

  • Which aircraft models fly most regularly from Phnom Penh to London?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Phnom Penh to London?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Phnom Penh and London, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Phnom Penh to London, Thai Airways or China Eastern?

    The two airlines most popular with KAYAK users for flights from Phnom Penh to London are Thai Airways and China Eastern. With an average price for the route of $1,375 and an overall rating of 7.9, Thai Airways is the most popular choice. China Eastern is also a great choice for the route, with an average price of $887 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Phnom Penh to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Phnom Penh to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Phnom Penh to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Phnom Penh is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Phnom Penh to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Phnom Penh with another airline. Booking your flights between Phnom Penh and LHR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Phnom Penh to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Phnom Penh up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Phnom Penh to London

 
See real verified KAYAK customer reviews for airlines flying from Phnom Penh to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Phnom Penh to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Thai AirwaysOverall score based on 403 reviews
7.4Food
8.4Crew
7.9Boarding
6.9Entertainment
7.7Comfort
Airline reviews

Gate and boarding processes were handled smoothly and efficiently. Both (connecting) flights departed and arrived on time. The cabin crew seemed anxious and a bit stressed/rushed. Food service was OK, but the hot food dishes were poor quality.

8.0 ExcellentPeter, May 2026
KTI - LHR
Read more Thai Airways reviews

Gate and boarding processes were handled smoothly and efficiently. Both (connecting) flights departed and arrived on time. The cabin crew seemed anxious and a bit stressed/rushed. Food service was OK, but the hot food dishes were poor quality.

HAVING ANNOUNCEMENTS FOR PEOPLE TO BOARD ACCORDING TO GROUP IS ESSENTIAL N ENSURING N CUTTING OF QUEUES, EXCEPT FOR PRIORITY CLASS PASSENGERS ON A SEPARATE Q

We still get drinks and a snack. Love the gift bags too.

business class is old but still done very well by the team.

Excellent airline. The plane was clean and the staff were very attentive

Good experience although the boarding gate is at the terminal extension hence need to leave lounge to head over earlier.

Thai Royal First is very good. Easy check in , Private room in the first class lounge and escort from ticketing to the plane. Once on board crew was very polite, food was outstanding, and the ride was smooth as silk. Restrooms were especially clean. Great Experience

I'm not interested in improving the airline. Therefore, I won't explain this in more detail. Next time I'll try a different one.

The flight (boarding) was delayed by 40-50 minutes and there was very crowed. They need to improve on the timeliness & boarding process. (They asked passenger to board in groups, but the 2nd group was standing there waiting for 20 minutes!). However, services from the crew was very good, also the food was good as well. I also found the legroom was quite comfortable.

Need to improve on punctuality. My flight was delayed by 1 hour.

It was just fine. The sirlines did live up fully to my expectation.

The flight was delayed. The staff made us wait in the room that is too small and it was crowded and with no seats available for waiting. They did not tell us why the delay occurred.

While boarding at PVG, there was a ticket checking at the gate, then there was another ticket checking at the bottom of the escalator, which created quite a dangerous congestion. Not sure which idiot made this absolutely unnecessary arrangement.

While boarding at PVG, there was a ticket checking by the gate, then there was another ticket checking right at the bottom of the escalator, which created quite a dangerous congestion. Don't understand why the duplication?

I was traveling alone with an infant, so the crew was incredibly helpful. Both the international and subsequent domestic flights were impeccable.

Plane was good. But food was bad and air host was so rude. I will never fly with China Eastern again

The flight was delayed by 2 hours, although to their credit they delayed my connecting flight so people could reach it. Also their site is a nightmare to navigate on a phone. Everything else was good.

The ticket was last minute buy so no concerns about the pricing this time, but the crew in general could have been more accommodating, helpful.

CTU-KMG-CNX with 1.5 hr connection at KMG. Doable but just barely bc immigration exit from China is at the last flight leg, here: KMG to CNX. We hauled out of the domestic terminal to reenter at the international departures (luggage checked thru to CNX thankfully). Immigration had only two agents, even though KMG gets a HUGE number of foreigners. It took forever for such a shot line. Then security also took a while, so I just just made the connection. Recommend if you exit China with domestic international transfer, plan for 2+ hrs to avoid a heart attack. Airline personnel don’t suffer if you miss the flight, you do. Plan accordingly.

China Eastern as a member of Sky Alliance airlines should have the same standards overall of their partners, Besides the seats comforts everything else is bellow the standard for a business class travelers. A BIG ISSUE FOR NON-CHINESE PASSENGERS IS THE ABILITY TO CHECK IN ONLINE, by making so difficult or almost impossible there is no chance to get a seat assignment ahead of time then go to the airport and get what is left. THIS IS NOT a SKY TEAM modality.

Everything you need to know for your flight from Phnom Penh to London

Information on your arrival and departure airports