Our cheapest offers for flights from Cardiff to London

Here you can compare cheap flights from Cardiff (CWL) to London (LON) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to London. Prices and availability may change at any time.

	Outbound	Return	Airlines	Baggage	Price
Cardiff London	Outbound 31/01/26 1 Stopover (ALC) VY1240, FR8287 27h 30min	Return 03/02/26 1 Stopover (DUB) FR0210, FR0634 17h 45min	Vueling Airlines, Ryanair	?	£95
Best option Cardiff London	Outbound 03/01/26 1 Stopover (DUB) FR0635, FR0030 11h 45min	Return 21/01/26 1 Stopover (DUB) FR0031, FR7850 25h 35min	Ryanair	?	£105
Cardiff London Please note: transfer for connecting flight	Outbound 03/01/26 2 Stopovers (DUB, NQY) FR0635, FR4784, RK9227 20h 55min	Return 21/01/26 1 Stopover (DUB) FR0256, FR0634 09h 00min	Ryanair, Ryanair UK		£108
Cardiff London	Outbound 20/03/26 1 Stopover (BHD) EI3621, BA8757 09h 45min	Return 17/04/26 1 Stopover (BHD) BA8756, EI3620 20h 30min	Aer Lingus Irish Airlines, British Airways		£437
Cardiff London	Outbound 01/01/26 1 Stopover (DUB) FR7851, FR5291 11h 25min	Return 09/01/26 1 Stopover (DUB) FR0293, FR0634 23h 25min	Ryanair	?	£116
Cardiff London	Outbound 01/01/26 1 Stopover (BHD, BFS) EI3621, RK0130 12h 30min	Return 09/01/26 1 Stopover (BFS, BHD) RK0131, EI3620 15h 45min	Aer Lingus Irish Airlines, Ryanair UK		£219
Cardiff London	Outbound 22/12/25 1 Stopover (AMS) KL1094, KL0979 14h 55min	Return 10/01/26 1 Stopover (AMS) KL0980, KL1093 08h 15min	KLM		£287
Cardiff London	Outbound 31/01/26 1 Stopover (AMS) KL1094, KL0987 19h 50min	Return 03/02/26 1 Stopover (AMS) KL0996, KL1093 20h 50min	KLM	?	£435
Cardiff London	Outbound 20/03/26 1 Stopover (BHD) EI3621, BA8757 09h 45min	Return 17/04/26 1 Stopover (BHD) BA8756, EI3620 20h 30min	Aer Lingus Irish Airlines, British Airways		£447
Cardiff London	Outbound 20/03/26 1 Stopover (BHD) BA8979, BA8757 09h 45min	Return 17/04/26 1 Stopover (BHD) BA8758, EI3620 16h 35min	British Airways		£481

Tips and tricks to help you find cheap flights from Cardiff to London

Useful information about the flight from Cardiff to London

London - historic and vibrant

London's lively, multicultural vibe entices visitors from around the world to explore and party.

London is great all year round

London is warmest in July and August, but in spring, parks (including of course Hyde Park with its famous Serpentine lake) are a riot of floral colour. In winter, bars and pubs are snug and welcoming. Plenty of holidays and festivals are celebrated in London all year round. Every August Bank Holiday, for example, Notting Hill Carnival comes to North West London. February sees wonderful Chinese New Year celebrations, and in April the London Marathon and the Oxford and Cambridge boat race on the Thames both take place.

What to know before you travel

London is a relatively safe city. However, watch out for pickpockets on busy trains. There is a 'congestion' charge (around £11) for motor vehicles in central London 7am-6pm from Monday to Friday. Visitors should be aware that London tends to be more expensive than other cities in the UK.

Local info: travel and connections

From Heathrow Airport take the Piccadilly tube line from terminals 1, 2 and 3 (the journey to central London takes about half an hour and costs around £6). Or, take the Heathrow Express from Terminal 1, 2 and 3 to Paddington station in 15 mins for around £26. A taxi to the centre is just over £30, with a journey time of around 40 mins. From Gatwick, take the Gatwick express from South Terminal to Victoria Station in around half an hour (cost: around £18). A taxi (from £20) takes about an hour. From Stansted, take the Stansted Express trains to Liverpool Street station in around 45 minutes (from £12). A taxi can cost approximately £100 and takes an hour. From Luton airport there is a shuttle to Luton Airport Parkway then the train to St. Pancras (around £15 in, 40 minutes). Cheap hostels start at around £20/night, hotels are upwards of £40/night. Single public transport tickets cost around £5.70. A day Travelcard works for all transport modes and costs £12-£15. Get an 'Oyster' card for a slight discount on the normal ticket price (refundable deposit of £5).

Important flight information

Flight information: Cardiff - London

Outbound and return from	94,46 GBP
Distance	221 km
Departure airport	Airport Cardiff (CWL)
Arrival airport	Airport London (LCY, LGW, LHR, LTN, STN, SEN) (LON)
Destination country	Flights to United Kingdom

Alternative routes to United Kingdom

Flight Cardiff - Edinburgh from 97 GBP
Flight Cardiff - Newcastle from 107 GBP
Flight Cardiff - Glasgow from 86 GBP
Flight Cardiff - London Stansted from 95 GBP
Flight Cardiff - Belfast City from 99 GBP
Flight Cardiff - London City from 259 GBP

Alternative flights to London

Popular destinations for onward travel

Flight London - Berlin from 51 GBP
Flight London - Barcelona from 37 GBP
Flight London - Cairo from 116 GBP
Flight London - Majorca from 43 GBP
Flight London - New York from 260 GBP
Flight London - Gran Canaria Las Palmas from 70 GBP
Flight London - Malaga from 29 GBP
Flight London - Singapore from 408 GBP
Flight London - Accra from 429 GBP
Flight London - Bangkok from 236 GBP

Flight destinations with a similar price

Flight Cardiff - Edinburgh from 97 GBP
Flight Cardiff - Malaga from 100 GBP
Flight Cardiff - Faro from 102 GBP
Flight Cardiff - Glasgow from 86 GBP
Flight Cardiff - London Stansted from 95 GBP
Flight Cardiff - Barcelona from 102 GBP
Flight Cardiff - Milan from 97 GBP
Flight Cardiff - Milan-Malpensa from 97 GBP
Flight Cardiff - Belfast City from 99 GBP