Strikes are a regular occurrence in Europe, as employees withhold their labour to fight for better pay and conditions.
From Euronews, walkouts are sometimes planned months ahead but others are announced last minute, showing that it always pays to check before you travel.
Italy: Airport workers plan nationwide walkout
Unionised staff at various airports across Italy plan to strike on 5 July.
Affected airports include Bologna, Crotone, Lamezia Terme, Milan, Reggio Calabria, Rome and Venice, with walk outs hitting at different times of day. Disruption to flights is likely.
UK: Gatwick braces for disruption in July
Workers at London Gatwick Airport will walk out later this month in a dispute over pay.
Around 300 security and passenger services staff will strike from 12-14 July and 18-21 July. It could delays in baggage screening and affect passengers in need of special assistance.
Further action could take place over the busy summer holidays if the dispute is not settled.
Türkiye: Air traffic controllers go on strike
Major flight delays have hit Türkiye's Antalya airport as air traffic controllers walk out over pay and working conditions.
The work-to-rule strike action is impacting around 50 per cent of arrivals and departures, and is expected to continue until 14 July.