Mameluke Flag over Cairo according to the Catalan Atlas c. 1375 created by James Dahl. The golden banner is supposedly identical to the Ayyubid banner.



WARNING: This image is somewhat speculative. It is drawn after the  Catalan Atlas, a primary source of the late 14th century. This means that the flag is indeed attested in a (Western) source dated to the Mamluk period, but it does not follow that this flag was indeed in use, let alone that it is "the" Mamluk flag.
Own work
Original:  Producer Vector:  Ryucloud