More than 50 flights were cancelled at Hamburg Airport on Monday after ground staff launched a last-minute, full-day strike.
Hundreds of flights were cancelled at eight German airports Tuesday, including at the nation's busiest travel hub Frankfurt, as security staff walked off the job in a deepening row over pay.
Several thousand people took the streets of Burkina Faso's capital Ouagadougou on Thursday as workers downed tools in a nationwide strike over higher fuel prices.
A baggage handlers strike at Brussels international airport forced the cancellation of 130 out of 630 flights scheduled for Monday, the fifth day of the dispute, an official said.
Ryanair will cancel 190, or eight percent, of its flights due Friday when cabin crews strike across Europe, the Irish no-frills airline said Tuesday, attacking rivals for the disruption.
Ryanair warned Tuesday that it may slash jobs and close some bases in Germany if it is hit with more strikes, a day before a planned work stoppage for better pay and conditions.
The labour action comes at the tail-end of Europe's summer holiday season, and extra pre-strike ferries were called into action on Sunday to move people at the last minute.
Germany's Ryanair pilots will join a wave of strikes against the no-frills carrier across Europe on Friday, escalating a row over pay and conditions at the height of the summer season.
The industrial action would cost the company 800,000 euros ($925,440) a day and affect around 7,000 passengers on the first day of a strike, the airline said.