CWL - LHR

$185 Find Cheap Flights from Cardiff to London - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$185
Typical prices: $248-$555
Multiple Airlines
Mon 11/19Mon 11/26
CWL - LHR • 1 stop
Cheapest one-way
$218
Typical prices: $316-$958
Multiple Airlines
Sun 12/9
CWL - LHR • 1 stop
Top layover airports
Amsterdam Schiphol (AMS)
Cheapest • Avg $510 (round-trip)
Belfast City (BHD)
Shortest trip • 4h 25m (one-way)
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Cheap Flights from Cardiff to London (CWL-LHR)

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

Recent round-trip flight deals from Cardiff to London

Thu, Nov 19 - Thu, Nov 26
Multiple Airlines Logo
1:25 pm - 5:50 pmCWL  Cardiff Wales-LHR London Heathrow
4h 25m1 stop Dublin
Multiple Airlines Logo
7:50 am - 1:00 pmLHR  London Heathrow-CWL Cardiff Wales
5h 10m1 stop Dublin
$185Multiple Airlines
Sat, Nov 28 - Sat, Dec 5
Multiple Airlines Logo
7:55 am - 9:10 amCWL  Cardiff Wales-LHR London Heathrow
25h 15m2 stops Alicante Barcelona-El Prat
Multiple Airlines Logo
9:55 am - 8:40 amLHR  London Heathrow-CWL Cardiff Wales
22h 45m2 stops Barcelona-El Prat Alicante
$259Multiple Airlines
Sun, Dec 6 - Sun, Dec 13
Multiple Airlines Logo
2:25 pm - 9:05 pmCWL  Cardiff Wales-LHR London Heathrow
6h 40m1 stop Dublin
Multiple Airlines Logo
8:45 pm - 8:10 amLHR  London Heathrow-CWL Cardiff Wales
11h 25m1 stop Dublin
$260Multiple Airlines
Sat, Nov 28 - Sat, Dec 5
Multiple Airlines Logo
8:15 am - 5:50 pmCWL  Cardiff Wales-LHR London Heathrow
9h 35m1 stop Dublin
Multiple Airlines Logo
8:50 pm - 1:30 pmLHR  London Heathrow-CWL Cardiff Wales
16h 40m2 stops Barcelona-El Prat Malaga
$299Multiple Airlines
Sat, Nov 28 - Sat, Dec 5
KLM Logo
10:20 am - 8:50 pmCWL  Cardiff Wales-LHR London Heathrow
10h 30m1 stop Amsterdam Schiphol
KLM Logo
8:40 am - 5:00 pmLHR  London Heathrow-CWL Cardiff Wales
8h 20m1 stop Amsterdam Schiphol
$326KLM
Thu, Nov 19 - Thu, Nov 26
Multiple Airlines Logo
1:25 pm - 8:05 amCWL  Cardiff Wales-LHR London Heathrow
18h 40m2 stops Dublin Zurich
Multiple Airlines Logo
8:50 am - 1:00 pmLHR  London Heathrow-CWL Cardiff Wales
4h 10m1 stop Dublin
$333Multiple Airlines
Sat, Nov 21 - Sat, Nov 28
KLM Logo
5:30 pm - 7:40 amCWL  Cardiff Wales-LHR London Heathrow
14h 10m1 stop Amsterdam Schiphol
KLM Logo
6:30 am - 5:00 pmLHR  London Heathrow-CWL Cardiff Wales
10h 30m1 stop Amsterdam Schiphol
$341KLM
Sat, Nov 21 - Sat, Nov 28
KLM Logo
5:30 pm - 7:40 amCWL  Cardiff Wales-LHR London Heathrow
14h 10m1 stop Amsterdam Schiphol
KLM Logo
6:30 am - 5:00 pmLHR  London Heathrow-CWL Cardiff Wales
10h 30m1 stop Amsterdam Schiphol
$342KLM
Wed, Nov 25 - Wed, Dec 2
KLM Logo
5:30 pm - 8:50 pmCWL  Cardiff Wales-LHR London Heathrow
3h 20m1 stop Amsterdam Schiphol
KLM Logo
8:25 pm - 9:45 amLHR  London Heathrow-CWL Cardiff Wales
13h 20m1 stop Amsterdam Schiphol
$378KLM
Tue, Nov 10 - Sat, Nov 14
KLM Logo
5:30 pm - 1:50 pmCWL  Cardiff Wales-LHR London Heathrow
20h 20m1 stop Amsterdam Schiphol
KLM Logo
4:25 pm - 9:50 amLHR  London Heathrow-CWL Cardiff Wales
17h 25m1 stop Amsterdam Schiphol
$418KLM
Booking Insights

Price, demand and travel trends for Cardiff 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.

Which airline is the cheapest to fly from Cardiff to London Heathrow Airport?

KLM ($326) offered the cheapest round-trip ticket from Cardiff to London Heathrow Airport in the last 5 days.

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Key details for Cardiff to London Heathrow Airport flights

Cheapest flight

$185
Round-trip flight from Cardiff to London Heathrow Airport

When to book flights from Cardiff to London

Are your dates flexible? Find out the best times to travel from Cardiff 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 Cardiff to London Heathrow Airport flight questions, answered

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

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

    There are currently no nonstop flights available from Cardiff to London Heathrow Airport. Flights with 1 layover take between 4h 25m and 8h 17m in total, depending on the connection.

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

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • Have flight prices from Cardiff 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 $185 to $914. That means the highest observed fare was about 5x higher than the lowest one.

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

    One-way fares from Cardiff to London Heathrow Airport are currently lower than usual. Average one-way flight prices are about $293, which is 70% 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 Cardiff to London Heathrow Airport?

    Flights from Cardiff to London Heathrow Airport usually depart from Cardiff Wales (CWL) and arrive at London Heathrow (LHR).

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

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

    • Amsterdam Schiphol (AMS) - 67% of one-stop connections
    • Belfast City (BHD) - 17% of one-stop connections
    • Dublin (DUB) - 17% of one-stop connections

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

    Yes. Flexible dates can save you up to 56% on flights from Cardiff to London Heathrow Airport. Sunday is the cheapest departure day at $248 round-trip on average, while Friday is the most expensive at $555, a difference of $307.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

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

    Flying via Belfast City (BHD) gives the shortest average 1-stop total travel time at 4h 25m, compared with 6h 48m via Amsterdam Schiphol (AMS) and 8h 17m via Dublin (DUB).

  • 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 Cardiff 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 Sunday departure and avoid flying on Friday. On this route, Sunday flights average $248, about $307 less than Friday fares (55% savings) 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 Cardiff to London

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