Airline schedules are made months in advance.

The May schedule for all airlines will be reduced across the board. Everybody is in the process of decreasing the number of available flights and parking airplanes.

You won't see those flights return either until there is an increase in people flying. Right now passengers are very few.

Once people's confidence to fly shows signs of returning airlines will adjust their schedules. Even then though it will happen gradually. It will be a slow process to ramp things back up.