British Airways pilots began a 48-hour strike on Monday, grounding most of the airline's flights and disrupting thousands of travelers' plans in unprecedented industrial action over a pay dispute.
The British Airline Pilots Association (BALPA) last month gave the airline notice of three days of industrial action in September, in what is the first ever strike by BA pilots.
Following the strikes on Monday and Tuesday, another day of industrial action is scheduled for Sept. 27.