Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Cardiff to London from £153

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 23/1. 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
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

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
22:25 - 08:05
CWL
-
LHR
9h 40m1 stop
Multiple Airlines Logo
15:10 - 22:00
LHR
-
CWL
6h 50m1 stop
£153Multiple Airlines
Fri, 23 Jan - Fri, 30 Jan
Multiple Airlines Logo
23:30 - 09:05
CWL
-
LHR
9h 35m1 stop
Multiple Airlines Logo
20:50 - 16:05
LHR
-
CWL
19h 15m2 stops
£167Multiple Airlines
Mon, 26 Jan - Mon, 2 Feb
Multiple Airlines Logo
22:25 - 08:05
CWL
-
LHR
9h 40m1 stop
Multiple Airlines Logo
17:45 - 23:05
LHR
-
CWL
5h 20m1 stop
£170Multiple Airlines
Fri, 9 Jan - Mon, 12 Jan
Multiple Airlines Logo
22:25 - 08:05
CWL
-
LHR
9h 40m1 stop
Multiple Airlines Logo
20:50 - 15:30
LHR
-
CWL
18h 40m2 stops
£173Multiple Airlines
Fri, 9 Jan - Tue, 13 Jan
Multiple Airlines Logo
22:25 - 10:25
CWL
-
LHR
12h 00m2 stops
Multiple Airlines Logo
16:20 - 22:00
LHR
-
CWL
5h 40m1 stop
£189Multiple Airlines
Fri, 23 Jan - Fri, 30 Jan
Multiple Airlines Logo
23:30 - 08:05
CWL
-
LHR
8h 35m1 stop
Multiple Airlines Logo
16:20 - 23:05
LHR
-
CWL
6h 45m1 stop
£196Multiple Airlines
Mon, 26 Jan - Mon, 2 Feb
Multiple Airlines Logo
22:25 - 15:00
CWL
-
LHR
16h 35m2 stops
Multiple Airlines Logo
17:45 - 23:05
LHR
-
CWL
5h 20m1 stop
£204Multiple Airlines
Fri, 9 Jan - Mon, 12 Jan
Multiple Airlines Logo
22:25 - 20:05
CWL
-
LHR
21h 40m2 stops
Multiple Airlines Logo
20:50 - 15:30
LHR
-
CWL
18h 40m2 stops
£227Multiple Airlines
Fri, 9 Jan - Tue, 13 Jan
Multiple Airlines Logo
21:20 - 18:00
CWL
-
LHR
20h 40m2 stops
Multiple Airlines Logo
20:50 - 15:40
LHR
-
CWL
18h 50m2 stops
£230Multiple Airlines
Sun, 11 Jan - Thu, 15 Jan
Multiple Airlines Logo
22:25 - 10:25
CWL
-
LHR
12h 00m2 stops
Multiple Airlines Logo
11:45 - 22:00
LHR
-
CWL
10h 15m2 stops
£232Multiple Airlines
Fri, 23 Jan - Fri, 30 Jan

KLM flights from Cardiff to London Heathrow Airport

Our best KLM deals on Cardiff to London Heathrow Airport flight tickets
KLM
25 Jan
CWL10:15Cardiff Wales
6h 45m
1 stop
LHR17:00London Heathrow
1 Feb
LHR20:25London Heathrow
13h 25m
1 stop
CWL09:50Cardiff Wales
£257
Find similar
KLM
24 Jan
CWL10:20Cardiff Wales
6h 40m
1 stop
LHR17:00London Heathrow
31 Jan
LHR16:25London Heathrow
17h 20m
1 stop
CWL09:45Cardiff Wales
£269
Find similar
KLM
26 Jan
CWL17:15Cardiff Wales
3h 35m
1 stop
LHR20:50London Heathrow
2 Feb
LHR08:40London Heathrow
8h 05m
1 stop
CWL16:45Cardiff Wales
£272
Find similar

British Airways flights from Cardiff to London Heathrow Airport

Our best British Airways deals on Cardiff to London Heathrow Airport flight tickets
British Airways
8 Jan
CWL08:35Cardiff Wales
12h 45m
1 stop
LHR21:20London Heathrow
12 Jan
LHR07:00London Heathrow
4h 30m
1 stop
CWL11:30Cardiff Wales
£372
Find similar
British Airways
8 Jan
CWL08:35Cardiff Wales
3h 35m
1 stop
LHR12:10London Heathrow
12 Jan
LHR07:00London Heathrow
4h 30m
1 stop
CWL11:30Cardiff Wales
£390
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Cardiff to London Heathrow Airport 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 27 December 2025.
Use the filters below to find and compare flights from Cardiff to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Fri 23/1

22:25-08:05

1 stop9h 40m

London Heathrow

Fri 30/1

15:10-22:00

1 stop6h 50m

£153

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Mon 26/1

23:30-09:05

1 stop9h 35m

London Heathrow

Mon 2/2

20:50-16:05

2 stops19h 15m

£167

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Fri 9/1

22:25-08:05

1 stop9h 40m

London Heathrow

Mon 12/1

17:45-23:05

1 stop5h 20m

£170

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Fri 9/1

22:25-08:05

1 stop9h 40m

London Heathrow

Tue 13/1

20:50-15:30

2 stops18h 40m

£173

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Fri 23/1

22:25-10:25

2 stops12h 00m

London Heathrow

Fri 30/1

16:20-22:00

1 stop5h 40m

£189

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Mon 26/1

23:30-08:05

1 stop8h 35m

London Heathrow

Mon 2/2

16:20-23:05

1 stop6h 45m

£196

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Fri 9/1

22:25-15:00

2 stops16h 35m

London Heathrow

Mon 12/1

17:45-23:05

1 stop5h 20m

£204

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Fri 9/1

22:25-20:05

2 stops21h 40m

London Heathrow

Tue 13/1

20:50-15:30

2 stops18h 40m

£227

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Sun 11/1

21:20-18:00

2 stops20h 40m

London Heathrow

Thu 15/1

20:50-15:40

2 stops18h 50m

£230

CardiffLondon

CWL - LHR

CWLLHR

Cardiff Wales

Fri 23/1

22:25-10:25

2 stops12h 00m

London Heathrow

Fri 30/1

11:45-22:00

2 stops10h 15m

£232

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to London from

How to get the cheapest flight ticket from Cardiff to London Heathrow Airport

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 Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Cardiff is on a Monday. momondo users have found tickets for Monday departures for as low as £574. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £1,258.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Cardiff to London Heathrow Airport in the morning for as low as £534. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £975 on average. Flights to London Heathrow Airport from Cardiff in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Cardiff Wales to London Heathrow flight route?

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

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

There is only 1 cabin class available to choose from on Cardiff Wales to London Heathrow 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 Heathrow Airport

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

Cheap Cardiff to London Heathrow Airport (CWL to LHR) flight deals and tips

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

Fastest flight time

3h 35m

Direct flights

None
The fastest flight from Cardiff to London Heathrow Airport takes 3h 35m
There are no direct flights from Cardiff to London Heathrow Airport. There are no popular flight routes from Cardiff to London Heathrow Airport.
Search flight deals

  • How far is Cardiff Wales to London Heathrow by plane?

    Cardiff Wales and London Heathrow are 117.1 mi apart from one another. Typically, this will take 3h 35m by plane in normal conditions.

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

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

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

    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 Heathrow Airport.

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

    The necessary travel and health documents for your London Heathrow Airport 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.

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
Northampton
Swindon
Stratford-upon-Avon
Southend-on-Sea
Canterbury
Ipswich
Ilford
Poole
Guildford
Swanage
Hayes
Chelmsford
Dover
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?

momondo does allow users to show only those flights to London from Cardiff which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Cardiff.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Cardiff and alert you when they change.

An easier way to manage your London Heathrow Airport 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
Mon 26/1
Mon 2/2
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London