Jason Kelce's flying by on luck alone this weekend -- betting thousands at a craps table before Sunday's Super Bowl kickoff.
TMZ has obtained photos of the big Philadelphia Eagles center shooting dice at a craps table in The Cosmopolitan of Las Vegas ... with eyewitnesses telling us JK was playing at a high roller's table in the luxurious Vegas hot spot.
We're told the minimum bet was $1,000 while the max was $5,000 .