If Pegasus were real would he be able to fly?

Possibly. How? 1. Magic - There's simply no way to account for the fact that a mythological horse could use magical means to fly. read more

If we presume that other musclo-skeletal features were similar to that of a bird, then conceivably Pegasus could fly; it simply couldn't carry a human rider. So it could theoretically exist; it just wouldn't be of much use to the average person. read more

Subsequently Bellerophon attempted to fly with Pegasus to heaven but was unseated and killed or, by some accounts, lamed. The winged horse became a constellation and the servant of Zeus. The spring Hippocrene on Mount Helicon was believed to have been created when the hoof of Pegasus struck a rock. read more