In a CNN article entitled “The worst airports for delays and cancellations this summer”, the Humberto Delgado airport of Lisbon appears in fourth place in the list.

The CNN rankings were based on data from May 27 to September 5 from FlightAware, the “world’s largest flight data and tracking platform”, which measures flights in real time and also cancellations and delays at airports around the world.

The data indicates that 43% of flights at Humberto Delgado Airport in the summer were operated with delays.

Here is the full list from CNN:

1. Toronto Pearson International Airport (Canada): 51.9%

2. Montreal-Trudeau International Airport (Canada): 47.8%

3. Frankfurt International Airport (Germany): 44.5%

4. Humberto Delgado Airport (Lisbon, Portugal): 43%

5. London Gatwick Airport (UK): 42%

6. Paris Charles de Gaulle Airport (France): 41.6%

7. Munich International Airport (Germany): 40.1%

8. Manchester Airport (United Kingdom): 39%

9. Athens International Airport (Greece): 38.5%

10. Vancouver International Airport (Canada): 37.8%