Flights from Chicago O'Hare to Seattle Tacoma

Tips and tricks to help you find cheap flights from Chicago O'Hare to Seattle Tacoma

Tip: book directly before departure
A good time to book a cheap flight on this route is directly on the day of departure.
0 days before departure
Cheapest weekday: Wednesday
Flight tickets are cheapest on Wednesday. Flights on these weekdays cost up to 23 % less.