FRANKFURT/BERLIN German airline Lufthansa (LHAG.DE) cancelled 1,450 flights after a pilots union called for a strike on Monday and Tuesday, adding to travellers' misery after millions were left stranded by a weekend-long train drivers' stoppage.
Lufthansa said late on Sunday more than 200,000 passengers and two thirds of its scheduled flights - short and mid-length services, mostly within Europe - would be affected by the strike.
Both the pilots' and train drivers' strikes hit at the start of a week-long, half-term holidays in nearly half of Germany's 16 federal states.
"The Vereinigung Cockpit (pilots union) is trying to turn Germany into a standstill nation," the airline said earlier on Sunday.
The union said on Sunday the strike over an early retirement scheme dispute would last from 1100 GMT (12 p.m. BST) on Monday until 2159 GMT (10.59 p.m. BST) on Tuesday. Lufthansa's low-cost unit Germanwings is not affected.
If it goes ahead it will be the eighth this year at Lufthansa.
The strikes are hampering the national airline in its efforts to expand low-cost operations that will allow them to compete more effectively with budget carriers such as Ryanair and easyJet on short-haul European routes.
VC, representing about 5,400 Lufthansa pilots, is fighting to keep a scheme that allows pilots to retire at the age of 55 and still receive up to 60 percent of their pay before regular pension payments start at 65. The union has proposed a plan to cover the costs of the scheme.
Management, under pressure to reduce costs, has offered to keep the pension scheme for employees who joined the company before this year, but wants to increase the earliest possible retirement age for new recruits.
Meanwhile, train drivers staged a 50-hour strike - their second in a week - starting early on Saturday morning that halted two thirds of long-distance trains in a dispute over pay and negotiation rights. It will end at 4 am (3 a.m. BST) on Monday
It left millions of passengers stranded. Although state-owned railway operator Deutsche Bahn introduced a replacement timetable to minimise disruption, only about a third of long-distance trains were running and local services were also hit.
The GDL union wants a 5 percent pay rise for 20,000 drivers and a work week of 37 hours from 39. It also wants to set wage deals for around 17,000 train guards and other personnel, also among its members.
Deutsche Bahn has promised normal services will resume on Monday.
Head of the GDL union Claus Weselsky said there would be a week-long break before any further strikes.
"I think we will talk in the next week and that we will have a break of at least seven days," he told ZDF broadcaster.
(Additional reporting by Peter Maushagen; Editing by Janet Lawrence and Susan Thomas)