Skift Take
The delays further fuel the fire of officials supporting a third runway at Heathrow, although airport operators say an exceptionally rainy spring season is to be blamed for delays.
More than one in four flights in and out of Heathrow were delayed during the spring as it struggled to cope with bad weather.
The latest figures, released by the Civil Aviation Authority, showed that the airport’s performance had worsened considerably compared with the same period last year.
Planes are classified as leaving or arriving late if they are more than 15 minutes behind schedule.
Heathrow emerged as Britain's worst performing airport with only 73 per cent of flights arriving or leaving on time. The average delay increased by one minute to 12.
[caption id="" align="alignright" width="350"] Only 73 percent of flights ar