29 March 2011
The biggest change will be on flights from Heathrow to New York, which will depart hourly between 1pm and 8pm from March 27, with a gap of only an hour and half between morning departures.
Previously five of the 11 daily services to New York left Heathrow at roughly the same time, leaving gaps of up to three hours between services.
Flight schedules from Chicago to London will also be realigned. In the past, four flights inbound to London departed the Windy City at similar times around 5pm and 8pm. They will now be more evenly spaced, departing at 5pm, 6pm, 7pm and 8pm.
Two of the three Miami flights from London clashed around 10am, and these have now been split to leave at 10am and 11am. The 1.30pm has moved to 1.35pm.
British Airways will launch daily services to San Diego from June 01, marking the airline's return to the route after eight years, while also increasing its services from Gatwick to Cancun from two to three a week from March 27.
Iberia is starting the only direct flight between Spain and California; flying between Madrid and Los Angeles three times a week from March 28, with an additional flight between July and September. The Spanish carrier will also launch new flights between Barcelona and Miami three times a week from March 29.