Half seating capacity for return leg?

My flights are fully booked but the return leg is always at a much reduced max load.87 seats return vs 149 seats for the outbound flight. Short trip also so has nothing to do with fuel…Can anyone help me?

It’s most likely the runways. Go to the respective aircraft type page and open the performance tool. There you can check the performance of a particular aircraft on any desired route and it’ll tell you where the problem is to be looked for.

Spot on, Cheers