Booking a holiday this summer? Flightright.co.uk has compiled its list of the worst countries, cities and airports for delays.
So whether it's your destination or just a connecting flight, here are the top 5 destinations with the most delayed or cancelled flights by city, according to the travel company:
Nice 64% Istanbul 64% Porto 62% Lisbon 61% Cairo 61%
Here are the percentage of flights from top UK airports delayed or cancelled by destination country:
Portugal 51% France 45% Spain 37% Turkey 33% Egypt 19% Greece 14%
And here are the percentage of flights to top summer destinations delayed or cancelled by departure airport:
Heathrow 54% Gatwick 40% Manchester 29% Luton 29% Edinburgh 27% Stansted 25%
All data compiled from flight records between June 1 - August 31 2014. Figures are based on all flight cancellations and delays from 1 second.