Lufthansa Group has extended its rebooking fee waiver for all of its carriers through the end of May. The group's policy, previously scheduled to end at the end of February, now allows travelers on Lufthansa, Brussels Airlines, Swiss, Austrian Airlines and Eurowings to rebook flights in the same class of service as many times as necessary without a fee through May 31. Flights booked by May 31 can be rebooked after May 31 one time without a fee.