Standard seat pitch is 30 to 31 inches in economy class for most carriers, with 32 inches being slightly above average and 29 inches falling slightly below.
Keep in mind, though, that different planes have different configurations depending on make, model, and airline. More pitch usually means more legroom for each passenger, but this isn’t always the case as legroom can be further impacted by design factors like seat thickness, tray table placement, and the amount of storage space beneath each seat. Additionally, certain seats, like those in the exit row or bulkhead, may have more legroom.