$90 Cheap American Airlines flights Chicago (ORD) to Seattle (SEA)

Set the "Price (lowest to highest)" filter on Expedia to find cheap American Airlines round-trip flights from $184 from ORD to SEA. Affordable one-way options from $90 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Look for affordable American Airlines flights from O'Hare Intl. Airport (ORD) to Seattle - Tacoma Intl. Airport (SEA) one to three months before your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and itinerary, the ideal day to book a domestic flight is generally Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Setting off from ORD at 9:55AM UTC-6, the first American Airlines flight to SEA lands at 12:42PM UTC-8. Traveling early means you'll be less likely to encounter cancellations or delays.* Not a morning person? The last American Airlines flight from ORD to SEA departs at 9:55AM UTC-6 and touches down at 12:42PM UTC-8.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.