Seattle to Chicago, IL for $128RT! (DIRECT)
United is putting Chicago on sale for nonstop service from Seattle. Best dates are in April with Tuesday, Wednesday or Saturday departures. Thanks to our friends at The Flight Deal for spotting this frugal fare. This price is regular economy with advanced seat assignment and full size carry-on allowed! Use ITA Matrix Software to find the best dates. Use Momondo for the frugal fares!