Condor

No change of tickets to a different date, time, or destination is possible on the Economy Light fare. Condor does not allow name changes either.

On other fares, time, date, and destination changes are possible. You must take into account the possible extra charge if you change to a more expensive ticket and a fee depending on your fare. It is not possible to change the number of passengers or their names. The fee for short flights for Economy and Best fares is EUR 50/person/flight, for long flights EUR 100.

The flight change form can be found here.