UK air traffic delays in May dropped by almost half compared to the same month last year, it has been reported by the National Air Traffic Service (NATS). There were 1,502 minutes of NATS-attributable en route delay – a 47.6% drop from May 2014’s figures. While the average en route delay per flight remained historically low at 0.42 seconds – which was down almost half from the 0.81 seconds in May 2014 – 99.95% of flights last month had no en route delay.

In May 2015 NATS handled 214,176 flights which was a steady increase in traffic as it was up 0.3% compared to May last year.