The travel industry is on high alert for disruption after Europe's peak season last year was hit by cancellations, causing chaos at airports. This summer, air traffic control issues are likely to be the weak spot, according to warnings from Eurocontrol, which manages European airspace. Heathrow Airport security workers on June 23 called off 31 days of strikes planned at Britain's busiest hub. At Birmingham Airport, around 100 security officers and terminal technicians will begin continuous strike action from July 18. The strikes will severely impact the airport's security and terminal maintenance, leading to flight delays, the Unite union said.

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Persons: Hannah McKay, Tiago Brandao, Pierre John Felcenloben, Antonis Triantafyllou, Milla Nissi Organizations: British Airways, Heathrow Airport, REUTERS, BELGIUM Ryanair, BRITAIN, Heathrow, Birmingham Airport, Glasgow, FRANCE Air, ATC, Nantes, Ryanair, Reuters, SPAIN Pilots, Iberia Regional Air Nostrum, Air Nostrum, Air Europa, Swedish Transport Workers, Union, Geneva, Thomson Locations: London, Britain, BELGIUM, Belgium, Charleroi, Europe, Gatwick, France, Paris, Orly, Lyon, Marseille, Nice, Toulouse, Bordeaux, ITALY, PORTUGAL, Portugal, Iberia, Spain, SWEDEN