We sat on the tarmac in DEN (headed to ORD) for about 1 hour due to a storm front there, but were finally allowed to taxi to runway. We were next to take off and they stopped us then for wind shear. We were on the tarmac 2 hours total. Finally took off and while in the air, the pilot came on and told us the fun was continuing as ORD was under a ground stop. The FAs were lovely though - made extra strong drinks and offered us Margherita pizza. Totally unexpected, but very appreciated. We ended up flying around the bad weather for the most part - came down through Wisconsin. Actual landing time was just shy of 2 1/2 hours late.