Direct flights available:
346 PER WEEK
Popular non-direct routes for this connection are G.Bush Intercont - Saint Paul Intl - O'Hare Intl, Houston - Hartsfield Jackson - O'Hare Intl - O'Hare Intl and Houston - Dallas Ft Worth - O'Hare Intl.
You can fly from Houston to Chicago indirect via Saint Paul Intl, Hartsfield Jackson or Dallas Ft Worth.
Direct flights available on