As a comparison, here are some other major comic book movies adjusted for ticket price inflation.
Superman (1978) $526.5 million
Batman (1989) $577.9 million
Spider-Man (2002) $637.8 million
The Dark Knight (2008) $681.7 million
The Avengers (2012) $705.7 million
Of course, this is not the same as tickets sold, in which case all of these would top BP, but there's no denying this film's great success.