Which Saints were able to levitate and fly ?

Only Christ Himself actually has this ability called 'ascension' (Greek: 'analepsis').

All other prophets or holy ones having this experience do so with His consent and assistance. We will all be given this experience and shared power during one mass event called the 'appearing,' (1 Thessalonians 4:17), which will also usher in many currently 'slumbering' forms of power, authority and genius that GOD already revealed previously while He was preaching His gospel to every human tribe and throughout all Creation. This arriving power will begin a new Christian era of authority and social structure in advance of Christ's physical return.

None, there never were any saints.

THAT WONT HAPPEN TILL RAPTURE COMES...

http://www.ncregister.com/blog/longenecker/could-s...

I don't think the vast majority of these alleged levitation events are genuine. I think it was some kind of propaganda

You can bet many of them were as high as a kite.

Saint Padre Pio could bilocate (be in two places at the same time)

Saint Francis of Assisi levitated on occasion

The All Saints.

Allegedly, Saint Francis of Assisi and Saint Alphonsus Liguori.

According to Wikipedia.

None. People can't levitate or fly. Saints were just people.

None