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

The best price for a return flight from Seattle to Chicago is €457.20. The average price for a ticket is €549.23

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.