Direct flights available:
138 PER WEEK
Popular non-direct routes for this connection are Portland Intl - Seattle Tacoma - O'Hare Intl, Portland Intl - San Francisco Intl - O'Hare Intl and Portland Intl - Seattle Tacoma - Mccarran Intl - O'Hare Intl.
You can fly from Portland Intl to Chicago indirect via Seattle Tacoma, San Francisco Intl or Mccarran Intl.
Direct flights available on