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