Compare Best Deals on Flights from Chicago (ORD) to Seattle (SEA)
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Last updated Feb 16, 2026
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Tracking the May 7, 2026 departure — the cheapest date we found.
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Search FlightsEmbarking on a journey from the bustling heart of the Midwest to the emerald landscapes of the Pacific Northwest, travelers flying from Chicago (ORD) to Seattle (SEA) can expect a seamless transition between two of America's most iconic metropolitan hubs. This transcontinental route spans approximately 1,721 miles and offers passengers a unique opportunity to witness the shifting topography of the United States, transitioning from the flat prairies of Illinois and the Great Lakes region to the dramatic, snow-capped peaks of the Cascade Range. Whether you are traveling for business in the booming tech sector or seeking a recreational escape amidst the lush forests and Puget Sound, this flight path serves as a vital artery connecting the Windy City with the Emerald City through numerous daily non-stop options provided by major legacy carriers and low-cost airlines alike.
Travel Tips
When flying from ORD to SEA, it is highly recommended to book your flight at least three to four weeks in advance to secure the most competitive pricing, as last-minute fares on this high-demand business corridor can fluctuate significantly throughout the week. Since you will be gaining two hours moving from Central to Pacific Time, try to schedule an early morning departure from Chicago; this allows you to land in Seattle before noon, giving you a full afternoon to explore Pike Place Market or the Space Needle without feeling rushed by the clock. Additionally, keep in mind that Chicago weather can be unpredictable, especially during the lake-effect snows of winter, so always download your airline's mobile app for real-time gate changes and potential de-icing delays that could impact your departure. Lastly, if you are flying on a clear day, try to snag a window seat on the right side of the aircraft during the descent into Seattle to get breathtaking, panoramic views of Mount Rainier and the surrounding evergreen forests.
Airport Information
Chicago (ORD)
O'Hare International Airport (ORD) is one of the world's busiest aviation hubs, serving as a primary gateway for both domestic and international travel from the greater Chicago area. Located about 17 miles northwest of the Loop, it offers a vast array of amenities, including high-end dining, luxury retail, and the iconic neon-lit underground walkway in Terminal 1. As a major fortress hub for both United and American Airlines, travelers heading to Seattle will find frequent departures and world-class lounge facilities to make their wait more comfortable.
Seattle (SEA)
Seattle-Tacoma International Airport (SEA), commonly referred to as Sea-Tac, is the primary commercial airport serving the Seattle metropolitan area and the broader Pacific Northwest region. Situated roughly 14 miles south of downtown Seattle, the airport is renowned for its impressive art installations and a wide variety of local Pacific Northwest culinary options, ranging from fresh seafood to artisan small-batch coffee. The airport is exceptionally well-connected to the city center via the Link Light Rail, providing a cost-effective and scenic transit option for arriving passengers.
Seasonal Pricing Patterns
Pricing for the ORD to SEA route typically follows distinct seasonal trends, with the most expensive fares occurring during the peak summer months of June, July, and August, when the Seattle weather is most favorable for tourism and outdoor exploration. Conversely, savvy travelers can often find the cheapest tickets during the late winter months of January and February, provided they avoid holiday peaks. Mid-week departures, specifically on Tuesdays and Wednesdays, generally offer better value than weekend flights. Shoulder seasons like late September and October also provide a great balance of moderate pricing and pleasant autumnal foliage.
Frequently Asked Questions
How long is the average flight time from ORD to SEA?
A direct flight typically takes between 4 hours and 15 minutes to 4 hours and 45 minutes, depending on the strength of the jet stream and specific weather conditions.
Which airlines offer non-stop flights between Chicago and Seattle?
Major carriers including United Airlines, American Airlines, Alaska Airlines, and Delta Air Lines offer frequent daily non-stop service between these two cities.
What is the time difference between Chicago and Seattle?
Seattle is in the Pacific Time Zone, which is two hours behind Chicago’s Central Time Zone, meaning if it is noon in Chicago, it is 10:00 AM in Seattle.
How can I get from SEA airport to downtown Seattle without a car?
The Sound Transit Link Light Rail runs directly from the airport terminal to various stops in downtown Seattle, with the journey taking approximately 40 minutes.
Is it cheaper to fly into Seattle or a nearby alternative airport?
While SEA is the most convenient, some travelers find lower fares by flying into Everett’s Paine Field (PAE), though it is further north and may require more expensive ground transport.