Freight volumes at Frankfurt Airport were relatively flat in April, slowing only 0.1 per cent, year-on-year, to 174,000 tonnes. Even so, takeoffs and landings at the European airport took a hit last month, declining 2.2 per cent to 39,250 aircraft movements. Such figures were largely affected by the strike of Deutsche Lufthansa AG's ground staff in late April, according to FRA owner and operator Fraport Group.