Those travelling from the UK to Spain in May have been warned of major cancellations, with Air Europa workers calling for strikes.
Spanish pilots union Sepla have called for the movement, with an ongoing dispute over labour. They've said the airline has 'zero interest' in resolving the issues, according to Birmingham Live.
Pilots now plan to walk out on May 1, 2, 4 and 5 coinciding with the bank holiday and the upcoming coronation. Between 620 and 640 pilots are thought to be involved.