Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Cardiff to London from £108

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to London departing on 20/9. 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

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Cardiff to London (CWL-LON)

Cheap return flights

Ryanair Logo
09:00 - 20:55CWL-LGW
11h 55m1 stop
Ryanair Logo
17:35 - 07:25LGW-CWL
13h 50m1 stop
£108Ryanair
Find Deal
Sat, 20 Sep - Wed, 24 Sep
Ryanair Logo
16:20 - 21:00CWL-STN
4h 40m1 stop
Ryanair Logo
06:25 - 12:45STN-CWL
6h 20m1 stop
£108Ryanair
Find Deal
Tue, 2 Sep - Mon, 15 Sep
Ryanair Logo
09:00 - 21:20CWL-STN
12h 20m1 stop
Ryanair Logo
18:35 - 07:25STN-CWL
12h 50m1 stop
£114Ryanair
Find Deal
Sat, 20 Sep - Wed, 24 Sep
Logo
20:30 - 09:05CWL-STN
12h 35m1 stop
Logo
22:00 - 07:25STN-CWL
9h 25m1 stop
£122
Find Deal
Wed, 10 Sep - Wed, 17 Sep
Logo
09:00 - 13:35CWL-LTN
4h 35m1 stop
Logo
14:25 - 07:25LTN-CWL
17h 00m2 stops
£140
Find Deal
Sat, 20 Sep - Wed, 24 Sep
KLM Logo
09:50 - 17:35CWL-LHR
7h 45m1 stop
KLM Logo
11:45 - 16:45LHR-CWL
5h 00m1 stop
£280KLM
Find Deal
Wed, 10 Sep - Wed, 17 Sep
KLM Logo
10:20 - 18:25CWL-LCY
8h 05m1 stop
KLM Logo
09:20 - 16:45LCY-CWL
7h 25m1 stop
£323KLM
Find Deal
Fri, 26 Dec - Tue, 6 Jan
British Airways Logo
12:00 - 19:35CWL-LHR
7h 35m1 stop
British Airways Logo
07:40 - 11:30LHR-CWL
3h 50m1 stop
£448British Airways
Find Deal
Wed, 27 Aug - Wed, 3 Sep
Vueling Logo
20:30 - 20:05CWL-LHR
23h 35m2 stops
Vueling Logo
20:50 - 19:40LHR-CWL
22h 50m2 stops
£574Vueling
Find Deal
Wed, 10 Sep - Wed, 17 Sep
British Airways Logo
12:00 - 21:50CWL-LHR
9h 50m2 stops
British Airways Logo
19:05 - 11:30LHR-CWL
16h 25m2 stops
£670British Airways
Find Deal
Tue, 16 Sep - Tue, 23 Sep

KLM flights from Cardiff to London

Our best KLM deals on Cardiff to London flight tickets
KLM
10 Sept
CWL09:50Cardiff Wales
7h 45m
1 stop
LHR17:35London Heathrow
17 Sept
LHR11:45London Heathrow
5h 00m
1 stop
CWL16:45Cardiff Wales
£280
Find similar
KLM
26 Dec
CWL10:20Cardiff Wales
8h 05m
1 stop
LCY18:25London City
6 Jan
LCY09:20London City
7h 25m
1 stop
CWL16:45Cardiff Wales
£323
Find similar
KLM
12 Sept
CWL09:50Cardiff Wales
8h 40m
1 stop
LCY18:30London City
19 Sept
LCY20:10London City
13h 00m
1 stop
CWL09:10Cardiff Wales
£335
Find similar

British Airways flights from Cardiff to London

Our best British Airways deals on Cardiff to London flight tickets
British Airways
27 Aug
CWL12:00Cardiff Wales
7h 35m
1 stop
LHR19:35London Heathrow
3 Sept
LHR07:40London Heathrow
3h 50m
1 stop
CWL11:30Cardiff Wales
£448
Find similar
British Airways
16 Sept
CWL12:00Cardiff Wales
9h 50m
2 stops
LHR21:50London Heathrow
23 Sept
LHR19:05London Heathrow
16h 25m
2 stops
CWL11:30Cardiff Wales
£670
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 15 August 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 - LGW

CWLLGW

Cardiff Wales

Sat 20/9

09:00-20:55

1 stop11h 55m

London Gatwick

Wed 24/9

17:35-07:25

1 stop13h 50m

£108

CardiffLondon

CWL - STN

CWLSTN

Cardiff Wales

Tue 2/9

16:20-21:00

1 stop4h 40m

London Stansted

Mon 15/9

06:25-12:45

1 stop6h 20m

£108

CardiffLondon

CWL - STN

CWLSTN

Cardiff Wales

Sat 20/9

09:00-21:20

1 stop12h 20m

London Stansted

Wed 24/9

18:35-07:25

1 stop12h 50m

£114

CardiffLondon

CWL - STN

CWLSTN

Cardiff Wales

Wed 10/9

20:30-09:05

1 stop12h 35m

London Stansted

Wed 17/9

22:00-07:25

1 stop9h 25m

£122

CardiffLondon

CWL - LTN

CWLLTN

Cardiff Wales

Sat 20/9

09:00-13:35

1 stop4h 35m

London Luton

Wed 24/9

14:25-07:25

2 stops17h 00m

£140

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Wed 10/9

09:50-17:35

1 stop7h 45m

London Heathrow

Wed 17/9

11:45-16:45

1 stop5h 00m

£280

CardiffLondon

CWL - LCY

CWLLCY

Cardiff Wales

Fri 26/12

10:20-18:25

1 stop8h 05m

London City

Tue 6/1

09:20-16:45

1 stop7h 25m

£323

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Wed 27/8

12:00-19:35

1 stop7h 35m

London Heathrow

Wed 3/9

07:40-11:30

1 stop3h 50m

£448

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Wed 10/9

20:30-20:05

2 stops23h 35m

London Heathrow

Wed 17/9

20:50-19:40

2 stops22h 50m

£574

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Tue 16/9

12:00-21:50

2 stops9h 50m

London Heathrow

Tue 23/9

19:05-11:30

2 stops16h 25m

£670

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 month to fly to London?

The cheapest month to fly to London from Cardiff is in May. Flight prices, which tend to average around £123, 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 £187.

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 £663. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Cardiff to London for around £1,030.

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 £567. Flights in the afternoon are often more expensive, with an average ticket price of £1,252.

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 are 1 cabin classes 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

Best price found

£178

Fastest flight time

4h 10m

Direct flights

None

Airports in London

5 airports
The best one-way flight to London from Cardiff in the past 72 hours is £178. The best return flight deal from Cardiff to London found on momondo in the last 72 hours is £108.
The fastest flight from Cardiff to London takes 4h 10m
There are no direct flights from Cardiff to London. Popular non-direct routes for this connection are Cardiff Wales Airport - London Heathrow Airport, Cardiff Wales Airport - London City Airport and Cardiff Wales Airport - London Gatwick Airport.
There are 5 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW)
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 2h 09m 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 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 4h 10m.

  • 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 £217Free CancellationRating
7.8
1,384 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
Slough
Maidstone
Gatwick
Southend-on-Sea
Canterbury
Ipswich
Ilford
Guildford
Colchester
Worthing
Hounslow
Dartford
Dover
Chelmsford
Hayes
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.

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 20/8
Wed 27/8
By creating a price alert you accept our terms of use and privacy policy.

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