There are 7 airports in Chicago: Merrill C Meigs, DuPage Airport, Chicago Midway International Airport, Chicago Executive Airport, Chicago Rockford International Airport, O'Hare International Airport and Chicago Union Railway Station.

The best price for a return flight from Seattle to Chicago is €474.80. The average price for a ticket is €570.37

There are 8 airlines that directly fly from Seattle to Chicago: American Airlines, Alaska Airlines, Etihad Airways, Gulf Air, Royal Jordanian, United Airlines, Silk Avia and Southwest Airlines.