In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What airport do you fly from for flights from Cardiff to London Heathrow?

Most people fly from Cardiff Wales (CWL) if they book a flight from Cardiff to London Heathrow. On average, Cardiff Wales has 0 outbound flights to London Heathrow per day from 0 airlines. Cardiff Wales is conveniently located just 9.1 mi from Cardiff’s city center.

Can I find deals for flights from Cardiff to Heathrow that include hotel bookings?

Yes. In addition to deals on Cardiff to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Cardiff to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to Heathrow.

Can I find deals for business class flights from Cardiff to Heathrow?

Yes. Cheapflights offers flight deals from Cardiff to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£80+ Cheap Flights from Cardiff to London Heathrow Airport

Cheap flight deals from Cardiff to Heathrow

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Cardiff to Heathrow
Explore the most affordable flight options available from Cardiff to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Thu 19/1113:25 -

1 stop4h 25m

Thu 26/1108:50 -

1 stop4h 10m

Deal found 20/10£173

Thu 12/1113:25 -

1 stop7h 40m

Thu 19/1108:50 -

1 stop4h 10m

Deal found 15/10£174

Mon 2/1108:35 -

1 stop12h 30m

Fri 6/1120:45 -

1 stop11h 05m

Deal found 18/10£178

Fri 30/1023:10 -

1 stop9h 55m

Sun 1/1107:50 -

1 stop6h 05m

Deal found 15/10£186

Sat 21/1108:15 -

1 stop9h 35m

Sat 28/1109:55 -

3 stops22h 45m

Deal found 19/10£206

Sat 31/1008:15 -

1 stop11h 35m

Wed 4/1117:45 -

1 stop19h 15m

Deal found 16/10£218

Sat 14/1108:15 -

1 stop9h 35m

Sat 21/1113:40 -

2 stops19h 00m

Deal found 17/10£224

Find flight deals from Cardiff to Heathrow

Round-trip from	£174
One-way from	£80

12/11-19/11
2 total stops
11h 50m total
Cardiff to London

Search Deals

5/11-31/12
1 total stop
7h 40m total
Cardiff to London

Search Deals

Cheapflights Fare Finder

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

Cheapest return flight

CardiffLondon

CWL Cardiff Wales - LHR London Heathrow

CWLLHR

Cardiff Wales

Thu 5/11

13:25-21:05

1 stop7h 40m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£80

CardiffLondon

CWL Cardiff Wales - LHR London Heathrow

CWLLHR

Cardiff Wales

Sat 12/12

10:50-07:40

2 stops20h 50m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£129

CardiffLondon

CWL Cardiff Wales - LHR London Heathrow

CWLLHR

Cardiff Wales

Sun 29/11

09:05-20:05

2 stops11h 00m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£157

CardiffLondon

CWL Cardiff Wales - LHR London Heathrow

CWLLHR

Cardiff Wales

Sun 8/11

14:25-21:05

1 stop6h 40m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£164

CardiffLondon

CWL Cardiff Wales - LHR London Heathrow

CWLLHR

Cardiff Wales

Tue 27/10

22:20-08:05

1 stop9h 45m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£168

CardiffLondon

CWL Cardiff Wales - LHR London Heathrow

CWLLHR

Cardiff Wales

Thu 19/11

13:25-17:50

1 stop4h 25m

London Heathrow

Thu 26/11

08:50-13:00

1 stop4h 10m

£173

CardiffLondon

CWL Cardiff Wales - LHR London Heathrow

CWLLHR

Cardiff Wales

Thu 12/11

13:25-21:05

1 stop7h 40m

London Heathrow

Thu 19/11

08:50-13:00

1 stop4h 10m

£174

CardiffLondon

CWL Cardiff Wales - LHR London Heathrow

CWLLHR

Cardiff Wales

Mon 5/4

12:00-20:50

1 stop8h 50m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£191

CardiffLondon

CWL Cardiff Wales - LHR London Heathrow

CWLLHR

Cardiff Wales

Fri 30/10

23:10-09:05

1 stop9h 55m

London Heathrow

Sun 1/11

07:50-13:55

1 stop6h 05m

£191

CardiffLondon

CWL Cardiff Wales - LHR London Heathrow

CWLLHR

Cardiff Wales

Sat 21/11

07:55-09:10

2 stops25h 15m

London Heathrow

Sat 28/11

09:55-08:40

2 stops22h 45m

£210

Flights are sorted by cheapest return flights first.

Deals found on 19/10

Showing 1-10 of 17 resultsSorted by cheapest first

Best time to book a flight from Cardiff to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Cardiff with our price prediction graph.

CWL-LHR

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Cardiff to London Heathrow Airport

What is the cheapest time of day to fly from CWL to LHR?

A simple way to save on the total cost of your ticket is to fly from Cardiff to London Heathrow Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 58% on your trip compared to booking a flight at midday.

Related info for your journey

What airport do you fly from for flights from Cardiff to London Heathrow?
Most people fly from Cardiff Wales (CWL) if they book a flight from Cardiff to London Heathrow. On average, Cardiff Wales has 0 outbound flights to London Heathrow per day from 0 airlines. Cardiff Wales is conveniently located just 9.1 mi from Cardiff’s city center.
Can I find deals for flights from Cardiff to Heathrow that include hotel bookings?
Yes. In addition to deals on Cardiff to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Cardiff to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to Heathrow.
Can I find deals for business class flights from Cardiff to Heathrow?
Yes. Cheapflights offers flight deals from Cardiff to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Why should you use Cheapflights to find cheap flight tickets from Cardiff to Heathrow?

Cheapflights helps you find that perfect flight to Heathrow from Cardiff by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Cardiff to Heathrow with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Cardiff to Heathrow flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Cardiff to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on Cardiff to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Cardiff to London Heathrow Airport from £80

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Cardiff to Heathrow

Cheapest flights from Cardiff to HeathrowExplore the most affordable flight options available from Cardiff to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Explore the most affordable flight options available from Cardiff to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Best flights from Cardiff to HeathrowDiscover carefully curated flight deals from Cardiff to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Discover carefully curated flight deals from Cardiff to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Last-minute flights from Cardiff to HeathrowDiscover last-minute flight deals from Cardiff to Heathrow. Data last updated 20 October 2026 and is based on user searches.

Discover last-minute flight deals from Cardiff to Heathrow. Data last updated 20 October 2026 and is based on user searches.

One-way flights from Cardiff to HeathrowSearch for one-way flight options from Cardiff to Heathrow. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.

Search for one-way flight options from Cardiff to Heathrow. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.

Find flight deals from Cardiff to Heathrow

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Cardiff to London Heathrow Airport that are best for you.

Best time to book a flight from Cardiff to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Cardiff with our price prediction graph.

Cheapflights Insights

What is the cheapest time of day to fly from CWL to LHR?

A simple way to save on the total cost of your ticket is to fly from Cardiff to London Heathrow Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 58% on your trip compared to booking a flight at midday.

Related info for your journey

What airport do you fly from for flights from Cardiff to London Heathrow?

Can I find deals for flights from Cardiff to Heathrow that include hotel bookings?

How can I find direct flights from Cardiff to Heathrow?

Can I find deals for business class flights from Cardiff to Heathrow?

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Cardiff to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Heathrow by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from Cardiff to Heathrow by cabin class

Find flights from Cardiff to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 20 October 2026.

Cardiff and Heathrow flights

Browse other Cardiff and Heathrow flight options. Last updated on 20 October 2026.

Other flights from Cardiff

Browse through other flights departing from Cardiff. Flights are based on user searches made on Cheapflights and were last updated on 20 October 2026.

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How does Cheapflights help users find flights from Cardiff to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Heathrow?

Can Cheapflights find flights from Cardiff to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Cardiff to Heathrow become cheaper?

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Travel Smart

Cheapest flights from Cardiff to Heathrow
Explore the most affordable flight options available from Cardiff to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Best flights from Cardiff to Heathrow
Discover carefully curated flight deals from Cardiff to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Last-minute flights from Cardiff to Heathrow
Discover last-minute flight deals from Cardiff to Heathrow. Data last updated 20 October 2026 and is based on user searches.

One-way flights from Cardiff to Heathrow
Search for one-way flight options from Cardiff to Heathrow. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.