Direct flights available:
135 PER WEEK
Popular non-direct routes for this connection are Portland Intl - Denver Intl - Midway, Portland Intl - Detroit Metro - Midway and Portland Intl - Mccarran Intl - O'Hare Intl.
You can fly from Portland Intl to Chicago indirect via Denver Intl, Detroit Metro or Mccarran Intl.
Direct flights available on