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Cheap flights from Cardiff to London from £73

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 13/12. 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
15:55 - 20:05CWL-LTN
4h 10m1 stop
Ryanair Logo
09:05 - 15:40LTN-CWL
6h 35m1 stop
£118Ryanair
Find Deal
Wed, 10 Dec - Fri, 12 Dec
Ryanair Logo
20:05 - 08:00CWL-LGW
11h 55m1 stop
Ryanair Logo
16:20 - 23:05LGW-CWL
6h 45m1 stop
£122Ryanair
Find Deal
Sat, 6 Dec - Mon, 8 Dec
Multiple Airlines Logo
20:55 - 13:40CWL-LTN
16h 45m1 stop
Multiple Airlines Logo
09:05 - 15:40LTN-CWL
6h 35m1 stop
£122Multiple Airlines
Find Deal
Tue, 9 Dec - Fri, 12 Dec
Ryanair Logo
19:10 - 07:40CWL-STN
12h 30m1 stop
Ryanair Logo
05:55 - 15:40STN-CWL
9h 45m1 stop
£124Ryanair
Find Deal
Wed, 10 Dec - Fri, 12 Dec
Multiple Airlines Logo
20:55 - 08:55CWL-LGW
12h 00m1 stop
Multiple Airlines Logo
07:25 - 15:40LGW-CWL
8h 15m1 stop
£131Multiple Airlines
Find Deal
Tue, 9 Dec - Fri, 12 Dec
Multiple Airlines Logo
15:55 - 21:20CWL-STN
5h 25m1 stop
Multiple Airlines Logo
21:20 - 15:40STN-CWL
18h 20m2 stops
£134Multiple Airlines
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Wed, 10 Dec - Thu, 11 Dec
KLM Logo
10:20 - 17:00CWL-LHR
6h 40m1 stop
KLM Logo
20:25 - 09:50LHR-CWL
13h 25m1 stop
£269KLM
Find Deal
Thu, 8 Jan - Tue, 13 Jan
KLM Logo
10:20 - 18:25CWL-LCY
8h 05m1 stop
KLM Logo
08:40 - 16:55LCY-CWL
8h 15m1 stop
£302KLM
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Tue, 23 Dec - Tue, 30 Dec
British Airways Logo
12:00 - 16:05CWL-LCY
4h 05m1 stop
British Airways Logo
18:55 - 11:30LCY-CWL
16h 35m1 stop
£581British Airways
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Mon, 30 Mar - Tue, 31 Mar
British Airways Logo
12:00 - 16:05CWL-LCY
4h 05m1 stop
British Airways Logo
18:55 - 11:30LCY-CWL
16h 35m1 stop
£583British Airways
Find Deal
Mon, 30 Mar - Tue, 31 Mar

British Airways flights from Cardiff to London

Our best British Airways deals on Cardiff to London flight tickets
British Airways
30 Mar
CWL12:00Cardiff Wales
4h 45m
1 stop
LHR16:45London Heathrow
31 Mar
LHR07:30London Heathrow
4h 00m
1 stop
CWL11:30Cardiff Wales
£391
Find similar
British Airways
30 Mar
CWL12:00Cardiff Wales
4h 45m
1 stop
LHR16:45London Heathrow
31 Mar
LHR07:30London Heathrow
4h 00m
1 stop
CWL11:30Cardiff Wales
£392
Find similar
British Airways
30 Mar
CWL12:00Cardiff Wales
4h 45m
1 stop
LHR16:45London Heathrow
31 Mar
LHR07:30London Heathrow
4h 00m
1 stop
CWL11:30Cardiff Wales
£393
Find similar

KLM flights from Cardiff to London

Our best KLM deals on Cardiff to London flight tickets
KLM
8 Jan
CWL10:20Cardiff Wales
6h 40m
1 stop
LHR17:00London Heathrow
13 Jan
LHR20:25London Heathrow
13h 25m
1 stop
CWL09:50Cardiff Wales
£269
Find similar
KLM
23 Dec
CWL10:20Cardiff Wales
8h 05m
1 stop
LCY18:25London City
30 Dec
LCY08:40London City
8h 15m
1 stop
CWL16:55Cardiff Wales
£302
Find similar
KLM
9 Dec
CWL10:20Cardiff Wales
7h 00m
1 stop
LCY17:20London City
12 Dec
LCY20:05London City
13h 45m
1 stop
CWL09:50Cardiff Wales
£334
Find similar

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 14 November 2025.
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

CardiffLondon

CWL - LTN

CWLLTN

Cardiff Wales

Wed 10/12

15:55-20:05

1 stop4h 10m

London Luton

Fri 12/12

09:05-15:40

1 stop6h 35m

£118

CardiffLondon

CWL - LGW

CWLLGW

Cardiff Wales

Sat 6/12

20:05-08:00

1 stop11h 55m

London Gatwick

Mon 8/12

16:20-23:05

1 stop6h 45m

£122

CardiffLondon

CWL - LTN

CWLLTN

Cardiff Wales

Tue 9/12

20:55-13:40

1 stop16h 45m

London Luton

Fri 12/12

09:05-15:40

1 stop6h 35m

£122

CardiffLondon

CWL - STN

CWLSTN

Cardiff Wales

Wed 10/12

19:10-07:40

1 stop12h 30m

London Stansted

Fri 12/12

05:55-15:40

1 stop9h 45m

£124

CardiffLondon

CWL - LGW

CWLLGW

Cardiff Wales

Tue 9/12

20:55-08:55

1 stop12h 00m

London Gatwick

Fri 12/12

07:25-15:40

1 stop8h 15m

£131

CardiffLondon

CWL - STN

CWLSTN

Cardiff Wales

Wed 10/12

15:55-21:20

1 stop5h 25m

London Stansted

Thu 11/12

21:20-15:40

2 stops18h 20m

£134

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Thu 8/1

10:20-17:00

1 stop6h 40m

London Heathrow

Tue 13/1

20:25-09:50

1 stop13h 25m

£269

CardiffLondon

CWL - LCY

CWLLCY

Cardiff Wales

Tue 23/12

10:20-18:25

1 stop8h 05m

London City

Tue 30/12

08:40-16:55

1 stop8h 15m

£302

CardiffLondon

CWL - LCY

CWLLCY

Cardiff Wales

Mon 30/3

12:00-16:05

1 stop4h 05m

London City

Tue 31/3

18:55-11:30

1 stop16h 35m

£581

CardiffLondon

CWL - LCY

CWLLCY

Cardiff Wales

Mon 30/3

12:00-16:05

1 stop4h 05m

London City

Tue 31/3

18:55-11:30

1 stop16h 35m

£583

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Cardiff and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Cardiff is in May. Flight prices, which tend to average around £127, are often lower during this time because this is during the off-season. The month of July is another great option to travel to London, with average flight prices from Cardiff averaging around £193.

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 £589. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Cardiff to London for around £1,290.

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 £548. Flights in the evening are often more expensive, with an average ticket price of £1,000.

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

Direct flights

None
There are no direct flights from Cardiff to London. There are no popular flight routes from Cardiff to London.
Search flight deals

  • 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 Great Western Railway. Expect the length of time you’ll spend onboard Great Western Railway to be about 1h 57m 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 £14 can save you up to 87% 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 4h 05m.

  • 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 many operators does momondo search for flights from Cardiff Wales Airport to London?

  • 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?

Best airlines flying from Cardiff to London

Compare and see reviews for airlines that fly from Cardiff to London with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom £223Free CancellationRating
7.7
1,411 reviews
Search KLM flights

Travelling to a place near London?

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

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