If my airline operates a charter flight with non-standard passengers (like your NFL example), the FAA requires that we ask passengers for their weight prior to

If my airline operates a charter flight with non-standard passengers (like your NFL example), the FAA requires that we ask passengers for their weight prior to boarding or actually weigh them at the door. If I recall correctly, we must do this for all chartered flights and not only sports teams, but I’d have to look it up to be certain. To my knowledge no airline accounts for general variances among passengers leaving Mississippi as opposed to, say, Colorado. The standard passenger weights do change in the winter vs the summer to account for heavier clothing.