The Worst Flight Delays at the World’s Busiest Airports: See the List

Flying for many has become full of delays, cancellations and other travel woes, but there are some airports that are worse than others when ranked by air-travel hiccups.

Most of the 100 busiest airports worldwide have had at least 20% of their flights delayed, according to flight-data specialist FlightAware, which measured flights between June 1 and July 24. At two Canadian airports, Toronto Pearson International Airport and Montréal-Trudeau International Airport, more than half of departing flights were late.