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Non-stop flights from Portland to Chicago for only $97 roundtrip with United Airlines.
Also works in reverse.
DEPART:
Portland, USA
ARRIVE:
Chicago, USA
RETURN:
Portland, USA
DATES:
Limited availability from April to May 2018
Portland – Chicago
28th Apr – 2nd May
Chicago – Portland
24th-28th Apr
possibly more…
STOPS:
AIRLINES:
United Airlines
Allow the search to complete, then click an OTA to view the advertised price: