LHR - KTI

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1 adult, Economy, 0 bags

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Everything you should know

Nonstop flights
Not available
There are currently no direct flights between London Heathrow Airport and Phnom Penh. You'll need to take a connecting flight to reach the destination.
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When to book
10 weeks
in advance
Our data shows that travelers who book at least 10 weeks in advance save around 28% compared to booking last minute.
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When to travel
November
Cheapest • 26% price drop
December
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Beijing Capital (PEK)
Cheapest • Avg $626 (round-trip)
Bangkok Suvarnabhumi (BKK)
Shortest trip • 15h 50m (one-way)
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Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from London to Phnom Penh

Multiple Airlines Logo
LHR  London Heathrow Airport-KTI Phnom Penh Techo Intl
6246 mimulti-stop
Multiple Airlines Logo
KTI  Phnom Penh Techo Intl-LHR London Heathrow Airport
6246 mimulti-stop
Multiple Airlines
Booking Insights

Price, demand and travel trends for London Heathrow Airport to Phnom Penh flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from London Heathrow Airport to Phnom Penh with more confidence.

What's the cheapest day of the week to fly from London Heathrow Airport to Phnom Penh?

Saturday is the cheapest day of the week to fly from London Heathrow Airport to Phnom Penh, it is 10% cheaper than the average day. Tuesday is the most expensive day with flight prices 10% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from London Heathrow Airport to Phnom Penh?

  • November is the cheapest month to fly from London Heathrow Airport to Phnom Penh at $708 round-trip.
  • July ($1,266) and December ($1,186) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 78% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from London Heathrow Airport to Phnom Penh the cheapest?

Flights from London Heathrow Airport to Phnom Penh are cheapest 10 weeks before departure. Booking in this window typically costs about 28% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for London Heathrow Airport to Phnom Penh flights

Low season

August
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly with an average 24% increase in price.

When to book flights from London to Phnom Penh

Are your dates flexible? Find out the best times to travel from London to Phnom Penh based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your London Heathrow Airport to Phnom Penh flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from London Heathrow Airport to Phnom Penh?

    Flights from London Heathrow Airport to Phnom Penh usually depart from London Heathrow (LHR) and arrive at Phnom Penh Techo Intl (KTI).

  • What cabin classes can I book on flights from London Heathrow Airport to Phnom Penh?

    Three cabin classes are available on flights from London Heathrow Airport to Phnom Penh:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from London Heathrow Airport to Phnom Penh pass through?

    One-stop flights from London Heathrow Airport to Phnom Penh most commonly connect through:

    • Abu Dhabi Zayed Intl (AUH) - 27% of one-stop connections
    • Guangzhou Baiyun (CAN) - 15% of one-stop connections
    • Bangkok Suvarnabhumi (BKK) - 12% of one-stop connections
    • Beijing Capital (PEK) - 12% of one-stop connections

    Abu Dhabi Zayed Intl (AUH) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from London Heathrow Airport to Phnom Penh?

    On the London Heathrow Airport to Phnom Penh route, being flexible with your departure day can save you up to 18%. Saturday is the cheapest day at $869 round-trip on average, while Tuesday is the most expensive at $1,055: a $186 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How expensive are last-minute London Heathrow Airport to Phnom Penh flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 4% above the route average of $955. Book 10 weeks before departure for the lowest fares.

  • How long is a flight from London Heathrow Airport to Phnom Penh?

    A nonstop flight from London Heathrow Airport to Phnom Penh takes 0h 00m, covering 6,246 miles.

  • Do I need a passport to fly from London Heathrow Airport to Phnom Penh?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much time can I save by choosing a different layover airport from London Heathrow Airport to Phnom Penh?

    Flying via Bangkok Suvarnabhumi (BKK) gives the shortest average 1-stop total travel time at 15h 50m, compared with 16h 01m via Ho Chi Minh City (SGN) and 17h 30m via Kuala Lumpur Intl (KUL).

  • What is the time difference between London Heathrow Airport and Phnom Penh?

    Phnom Penh is 6 hours ahead of London Heathrow Airport (Indochina Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

  • How much should I expect to pay for a London Heathrow Airport to Phnom Penh flight?

    Round-trip flights from London Heathrow Airport to Phnom Penh range from $770 to $1,176, with an average of $955 over the past 12 months. Anything below $770 counts as a good deal.

Your guide to booking London Heathrow Airport to Phnom Penh flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Saturday departure instead of Tuesday. On this route, Saturday flights average $869 - about $186 less than Tuesday (18% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 10 weeks before you fly. On this route, that window historically saves about 28% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your London Heathrow Airport to Phnom Penh trip for November. Fares historically average $708 round-trip in that month - typically $558 less than the most expensive month, which is July (based on the last 12 months).

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

Information on your arrival and departure airports

London (LHR)
Phnom Penh (KTI)