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Cheap flights from Cardiff to London from £39

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to London departing on 2/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Cardiff to London

Cheap return flights

Enter your travel dates to find the best prices.
Ryanair Logo
23:15 - 09:15
CWL
-
LTN
10h 00m
1 stop
Ryanair Logo
16:10 - 22:50
LTN
-
CWL
6h 40m
1 stop
£71Ryanair
Tue, 12 May - Tue, 19 May
Ryanair Logo
23:15 - 12:45
CWL
-
STN
13h 30m
1 stop
Ryanair Logo
13:15 - 22:50
STN
-
CWL
9h 35m
1 stop
£73Ryanair
Tue, 12 May - Tue, 19 May
Ryanair Logo
23:15 - 11:05
CWL
-
LGW
11h 50m
1 stop
Ryanair Logo
11:55 - 22:50
LGW
-
CWL
10h 55m
1 stop
£76Ryanair
Tue, 12 May - Tue, 19 May
Multiple Airlines Logo
10:25 - 02:10
CWL
-
LTN
15h 45m
1 stop
Multiple Airlines Logo
15:55 - 23:25
LTN
-
CWL
7h 30m
1 stop
£77Multiple Airlines
Mon, 27 Apr - Wed, 29 Apr
Multiple Airlines Logo
16:15 - 09:00
CWL
-
LGW
16h 45m
1 stop
Multiple Airlines Logo
11:45 - 23:05
LGW
-
CWL
11h 20m
1 stop
£79Multiple Airlines
Tue, 28 Apr - Wed, 6 May
Multiple Airlines Logo
16:15 - 01:55
CWL
-
LTN
9h 40m
1 stop
Multiple Airlines Logo
19:05 - 23:05
LTN
-
CWL
4h 00m
1 stop
£79Multiple Airlines
Tue, 28 Apr - Wed, 6 May
Ryanair Logo
23:15 - 09:50
CWL
-
STN
10h 35m
1 stop
Ryanair Logo
22:50 - 06:55
STN
-
CWL
8h 05m
1 stop
£89Ryanair
Tue, 19 May - Fri, 22 May
KLM Logo
09:45 - 17:20
CWL
-
LCY
7h 35m
1 stop
KLM Logo
08:25 - 16:45
LCY
-
CWL
8h 20m
1 stop
£277KLM
Tue, 12 May - Tue, 19 May
KLM Logo
09:45 - 17:20
CWL
-
LCY
7h 35m
1 stop
KLM Logo
08:25 - 16:45
LCY
-
CWL
8h 20m
1 stop
£291KLM
Wed, 13 May - Wed, 20 May
KLM Logo
17:15 - 07:15
CWL
-
LCY
14h 00m
1 stop
KLM Logo
07:45 - 16:45
LCY
-
CWL
9h 00m
1 stop
£291KLM
Mon, 3 Aug - Tue, 11 Aug

British Airways flights from Cardiff to London

Our best British Airways deals on Cardiff to London flight tickets
British Airways
27 Apr
CWL12:00Cardiff Wales
4h 45m
1 stop
LHR16:45London Heathrow
29 Apr
LHR07:40London Heathrow
3h 50m
1 stop
CWL11:30Cardiff Wales
£365
British Airways
27 Apr
CWL12:00Cardiff Wales
6h 10m
1 stop
LHR18:10London Heathrow
29 Apr
LHR07:40London Heathrow
3h 50m
1 stop
CWL11:30Cardiff Wales
£457
British Airways
13 May
CWL12:00Cardiff Wales
4h 00m
1 stop
LCY16:00London City
20 May
LCY15:50London City
19h 40m
2 stops
CWL11:30Cardiff Wales
£610

KLM flights from Cardiff to London

Our best KLM deals on Cardiff to London flight tickets
KLM
12 May
CWL09:45Cardiff Wales
7h 35m
1 stop
LCY17:20London City
19 May
LCY08:25London City
8h 20m
1 stop
CWL16:45Cardiff Wales
£277
KLM
13 May
CWL09:45Cardiff Wales
7h 35m
1 stop
LCY17:20London City
20 May
LCY08:25London City
8h 20m
1 stop
CWL16:45Cardiff Wales
£291
KLM
3 Aug
CWL17:15Cardiff Wales
14h 00m
1 stop
LCY07:15London City
11 Aug
LCY07:45London City
9h 00m
1 stop
CWL16:45Cardiff Wales
£291

momondo Fare Finder

 
Customise your flight search to find flights from Cardiff to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 1 April 2026.
Use the filters below to find and compare flights from Cardiff to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffLondon

CWL - LTN

CWLLTN

Cardiff Wales

Tue 12/5

23:15-09:15

1 stop10h 00m

London Luton

Tue 19/5

16:10-22:50

1 stop6h 40m

£71

CardiffLondon

CWL - STN

CWLSTN

Cardiff Wales

Tue 12/5

23:15-12:45

1 stop13h 30m

London Stansted

Tue 19/5

13:15-22:50

1 stop9h 35m

£73

CardiffLondon

CWL - LGW

CWLLGW

Cardiff Wales

Tue 12/5

23:15-11:05

1 stop11h 50m

London Gatwick

Tue 19/5

11:55-22:50

1 stop10h 55m

£76

CardiffLondon

CWL - LTN

CWLLTN

Cardiff Wales

Mon 27/4

10:25-02:10

1 stop15h 45m

London Luton

Wed 29/4

15:55-23:25

1 stop7h 30m

£77

CardiffLondon

CWL - LGW

CWLLGW

Cardiff Wales

Tue 28/4

16:15-09:00

1 stop16h 45m

London Gatwick

Wed 6/5

11:45-23:05

1 stop11h 20m

£79
Fastest return journey

CardiffLondon

CWL - LTN

CWLLTN

Cardiff Wales

Tue 28/4

16:15-01:55

1 stop9h 40m

London Luton

Wed 6/5

19:05-23:05

1 stop4h 00m

£79

CardiffLondon

CWL - STN

CWLSTN

Cardiff Wales

Tue 19/5

23:15-09:50

1 stop10h 35m

London Stansted

Fri 22/5

22:50-06:55

1 stop8h 05m

£89

CardiffLondon

CWL - LCY

CWLLCY

Cardiff Wales

Tue 12/5

09:45-17:20

1 stop7h 35m

London City

Tue 19/5

08:25-16:45

1 stop8h 20m

£277

CardiffLondon

CWL - LCY

CWLLCY

Cardiff Wales

Wed 13/5

09:45-17:20

1 stop7h 35m

London City

Wed 20/5

08:25-16:45

1 stop8h 20m

£291

CardiffLondon

CWL - LCY

CWLLCY

Cardiff Wales

Mon 3/8

17:15-07:15

1 stop14h 00m

London City

Tue 11/8

07:45-16:45

1 stop9h 00m

£291

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to London from

How to get the cheapest flight ticket from Cardiff to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to London?

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £595. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Cardiff to London for around £919.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £546. Flights in the evening are often more expensive, with an average ticket price of £890.

What is the cheapest Cardiff Wales to London flight route?

Fly from Cardiff Wales to London Heathrow for the best Cardiff Wales - London flight prices

What cabin class options are available on Cardiff Wales to London flights?

There is only 1 cabin class available to choose from on Cardiff Wales to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

When to book flights from Cardiff to London

Are you open to changing your travel dates? Check out the ideal times to fly from Cardiff to London according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Cardiff to London (CWL to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to London

Fastest flight time

6h 45m

Direct flights

None
The fastest flight from Cardiff to London takes 6h 45m
There are no direct flights from Cardiff to London. There are no popular flight routes from Cardiff to London.
Search flight deals

Frequently asked questions about flying from Cardiff to London

  • Is flying the fastest way to get from Cardiff to London?

    To save time, the fastest way to travel is by train from Cardiff to London on AccesRail. Expect the length of time you’ll spend onboard AccesRail to be about 1h 49m compared to taking a flight from Cardiff to London or a bus from Cardiff to London which have been found to be slower alternatives.

  • Is flying the cheapest way to get from Cardiff to London?

    A bus from Cardiff to London from £12 can save you up to 86% on the cost of your trip compared to booking a flight from Cardiff to London or a train from Cardiff to London.

  • How far is Cardiff Wales to London by plane?

    Cardiff Wales and London are 131.3 mi apart from one another. By plane, this route typically takes 6h 45m.

  • When did momondo last update prices for flights from Cardiff Wales Airport to London?

    Prices for flights from Cardiff Wales Airport to London refresh daily.

  • How old do you have to be to fly from Cardiff Wales Airport to London?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Cardiff Wales Airport to London.

  • What documentation or ID do you need to fly to London?

    The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Cardiff to London?

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Slough
Maidstone
Southend-on-Sea
Wembley
Ipswich
Canterbury
Ilford
Guildford
Hayes
Chelmsford
Dover
Folkestone
Ramsgate
Bedford
Chichester
Worthing

Why use momondo?

Why should I use momondo to find a flight deal from Cardiff to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Cardiff to London for you.

Can I find flights from Cardiff to London with flexible booking policies on momondo?

Flights from Cardiff to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Cardiff to London?

momondo helps you find the best flight between Cardiff and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Cardiff to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Cardiff. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport