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KTI - LHR

$277 Find Cheap Flights from Phnom Penh to London - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$617
Typical prices: $823-$1,281
XiamenAir, Shenzhen Airlines
Wed 11/7Mon 11/19
KTI - LHR • 1 stop
Cheapest one-way
$277
Typical prices: $357-$680
XiamenAir
Wed 10/24
KTI - LHR • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Phnom Penh and London Heathrow Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
17 weeks
in advance
Our data shows that travelers who book at least 17 weeks in advance save around 50% compared to booking last minute.
Insights
Insights
When to travel
February
Cheapest • 16% price drop
January
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Shenzhen (SZX)
Cheapest • Avg $716 (round-trip)
Bangkok Suvarnabhumi (BKK)
Shortest trip • 16h 02m (one-way)
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to London Heathrow Airport!
Flight Deals
Booking Insights
Flight Deals

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

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

Recent round-trip flight deals from Phnom Penh to London

Sat, Nov 7 - Thu, Nov 19
Multiple Airlines Logo
6:10 pm - 6:25 amKTI  Phnom Penh Techo Intl-LHR London Heathrow
19h 15m1 stop Xiamen Gaoqi Intl
Multiple Airlines Logo
10:30 pm - 10:40 amLHR  London Heathrow-KTI Phnom Penh Techo Intl
29h 10m1 stop Shenzhen
$617Multiple Airlines
Tue, Nov 10 - Wed, Nov 18
Multiple Airlines Logo
12:25 am - 3:55 pmKTI  Phnom Penh Techo Intl-LHR London Heathrow
22h 30m1 stop Beijing Capital
Multiple Airlines Logo
9:10 pm - 10:40 amLHR  London Heathrow-KTI Phnom Penh Techo Intl
30h 30m1 stop Shenzhen
$677Multiple Airlines
Thu, Dec 17 - Fri, Jan 8
China Southern Logo
4:10 pm - 6:35 pmKTI  Phnom Penh Techo Intl-LHR London Heathrow
33h 25m1 stop Guangzhou Baiyun
China Southern Logo
10:00 pm - 3:05 pmLHR  London Heathrow-KTI Phnom Penh Techo Intl
34h 05m1 stop Guangzhou Baiyun
$706China Southern
Wed, Dec 16 - Wed, Jan 6
China Southern Logo
11:55 am - 6:35 pmKTI  Phnom Penh Techo Intl-LHR London Heathrow
37h 40m1 stop Guangzhou Baiyun
China Southern Logo
10:00 pm - 3:05 pmLHR  London Heathrow-KTI Phnom Penh Techo Intl
34h 05m1 stop Guangzhou Baiyun
$756China Southern
Tue, Dec 15 - Wed, Jan 6
China Eastern Logo
1:25 am - 5:30 pmKTI  Phnom Penh Techo Intl-LHR London Heathrow
23h 05m1 stop Shanghai Pu Dong
China Eastern Logo
9:00 pm - 11:35 amLHR  London Heathrow-KTI Phnom Penh Techo Intl
55h 35m2 stops Shanghai Pu Dong Kunming Changshui
$857China Eastern
Sat, Nov 14 - Sat, Nov 28
China Eastern Logo
12:40 pm - 5:30 pmKTI  Phnom Penh Techo Intl-LHR London Heathrow
59h 50m2 stops Kunming Changshui Shanghai Pu Dong
China Eastern Logo
12:30 pm - 11:35 amLHR  London Heathrow-KTI Phnom Penh Techo Intl
40h 05m2 stops Shanghai Pu Dong Kunming Changshui
$885China Eastern
Sun, Dec 20 - Tue, Jan 5
Etihad Airways Logo
8:15 am - 6:10 pmKTI  Phnom Penh Techo Intl-LHR London Heathrow
16h 55m1 stop Abu Dhabi Zayed Intl
Etihad Airways Logo
8:40 am - 6:40 amLHR  London Heathrow-KTI Phnom Penh Techo Intl
15h 00m1 stop Abu Dhabi Zayed Intl
$940Etihad Airways
Sun, Dec 20 - Wed, Jan 6
Etihad Airways Logo
8:15 am - 6:10 pmKTI  Phnom Penh Techo Intl-LHR London Heathrow
16h 55m1 stop Abu Dhabi Zayed Intl
Etihad Airways Logo
8:40 am - 6:40 amLHR  London Heathrow-KTI Phnom Penh Techo Intl
15h 00m1 stop Abu Dhabi Zayed Intl
$940Etihad Airways
Sat, Oct 24 - Sun, Nov 1
Emirates Logo
8:45 pm - 7:20 pmKTI  Phnom Penh Techo Intl-LHR London Heathrow
28h 35m2 stops Singapore Changi Dubai Intl
Emirates Logo
3:50 pm - 4:35 pmLHR  London Heathrow-KTI Phnom Penh Techo Intl
41h 45m2 stops Dubai Intl Singapore Changi
$953Emirates
Sun, Nov 8 - Tue, Nov 17
Emirates Logo
9:40 pm - 4:10 pmKTI  Phnom Penh Techo Intl-LHR London Heathrow
25h 30m2 stops Singapore Changi Dubai Intl
Emirates Logo
1:40 pm - 4:35 pmLHR  London Heathrow-KTI Phnom Penh Techo Intl
19h 55m2 stops Dubai Intl Singapore Changi
$953Emirates
Booking Insights

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

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

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

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Phnom Penh to London Heathrow Airport. It’s 16% cheaper than the average day, while Saturday is the most expensive, with prices 34% higher.

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

•February is the cheapest month to fly from Phnom Penh to London Heathrow Airport at $817 round-trip.
•January ($1,669) and August ($1,278) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 104% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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

Flights from Phnom Penh to London Heathrow Airport are cheapest 17 weeks before departure. Booking in this window typically costs about 50% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Phnom Penh to London Heathrow Airport flights

Low season

October

Cheapest flight

$277
Beat the crowds with an average 26% drop in travelers.
The most popular month to fly with an average 11% increase in travelers.
One-way flight from Phnom Penh to London Heathrow Airport

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

Your Phnom Penh to London Heathrow Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

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

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

    • Economy Class
    • Business Class
    • First Class

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

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

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

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

    Round-trip flights from Phnom Penh to London Heathrow Airport range from $823 to $1,281, with an average of $967 over the past 12 months. Anything below $823 counts as a good deal.

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

    Last-minute fares on this route (booked within two weeks of departure) run 45% above the $967 route average. Book 17 weeks before departure for the lowest fares.

  • Have flight prices from Phnom Penh to London Heathrow Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $617 to $4,966. That means the highest observed fare was about 8x higher than the lowest one.

  • How are flight prices from Phnom Penh to London Heathrow Airport looking right now?

    One-way fares from Phnom Penh to London Heathrow Airport are currently lower than usual. Average one-way flight prices are about $402, which is 23% below the typical average for this route.

  • What car rental options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car rental companies, with daily rates starting from around $7 for economy cars. Top options include:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

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

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

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

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

    • Abu Dhabi Zayed Intl (AUH) - 37% of one-stop connections
    • Guangzhou Baiyun (CAN) - 17% of one-stop connections
    • Bangkok Suvarnabhumi (BKK) - 10% of one-stop connections
    • Shanghai Pu Dong (PVG) - 10% of one-stop connections

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

    Yes. Flexible dates can save you up to 38% on flights from Phnom Penh to London Heathrow Airport. Wednesday is the cheapest departure day at $817 round-trip on average, while Saturday is the most expensive at $1,302, a difference of $485.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

    Flying via Bangkok Suvarnabhumi (BKK) gives the shortest average 1-stop total travel time at 16h 02m, compared with 17h 48m via Kuala Lumpur Intl (KUL) and 17h 51m via Abu Dhabi Zayed Intl (AUH).

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

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

  • What popular places can I visit in London Heathrow Airport?

    Some of the most popular sights in London Heathrow Airport are Hyde Park and Buckingham Palace. These are among the most viewed places in London Heathrow Airport on KAYAK.

Your guide to booking Phnom Penh to London Heathrow Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Saturday. On this route, Wednesday flights average $817, about $485 less than Saturday fares (37% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 17 weeks before you fly. On this route, that window historically saves about 50% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Phnom Penh to London Heathrow Airport trip for February. Fares historically average $817 round-trip in that month - typically $852 less than the most expensive month, which is January (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.

    • Hilton London Heathrow Airport

More options for your flight from Phnom Penh to London

Complete your trip to London with a hotel stay or car rental

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