Cheap flights from Cardiff to London from £39

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 £583. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Cardiff to London for around £772.

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £585. Flights in the evening are often more expensive, with an average ticket price of £819.

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

There is only 1 cabin class available to choose from on Cardiff to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 33% of flights between Cardiff and London have experienced a delay on any given week. The average delay length over the past 12 months has been 61 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week that experiences the fewest delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 37% of their flights experiencing any sort of delay.