Chicago to Seattle Flight Route Information
| Travel Distance: | 1,729 Miles |
|---|---|
| Airlines Flying This Route: | Alaska Airlines, American Airlines, United Airlines |
| Weekly Flights: | 1 |
| Avg. Flight Duration: | 07.30 Hours |
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10/20/2026 Find Cheap Flights from Chicago to Seattle (CHI to SEA)
CHI - Chicago SEA - Seattle 
Find Cheap Flights from Chicago to Seattle (CHI to SEA)
Fares Starting from $142
CHI - Chicago SEA - Seattle Great deal! This is the lowest price we've seen for this one way route in the last 12 hours. Prices may change and aren't guaranteed for all flights or dates. Click on the price to continue your search and check the latest available fare. Ref. id 202609~Ref:T0zyikSj7keL3I5-1jrlnQ
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Cheap Flights from Chicago to Seattle - Compare & Book Our Best Deals
With over 48 daily departures from Chicago to Seattle, this route offers great flexibility for different travel plans. Browse one-way fares from $141.99, round-trip fares from $261.66, and other affordable options across different budgets. Compare flight choices, explore schedules, and book the best Chicago to Seattle deals that fit your budget and travel preferences.
Top Airlines that fly from Chicago to Seattle
Cheap Flight Deals from Chicago to Seattle
CHI Chicago Tue, Oct 20
SEA Seattle
from $142
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CHI Chicago Mon, Oct 26
SEA Seattle
from $142
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CHI Chicago Wed, Oct 28
SEA Seattle
from $142
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CHI Chicago Sat, Oct 31
SEA Seattle
from $142
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CHI Chicago Sat, Nov 7
SEA Seattle
from $142
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CHI Chicago Wed, Oct 21
SEA Seattle
from $142
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CHI Chicago Mon, Nov 9
SEA Seattle
from $142
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CHI Chicago Mon, Nov 23
SEA Seattle
from $142
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CHI Chicago Sat, Nov 14
SEA Seattle
from $142
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CHI Chicago Wed, Nov 11
SEA Seattle
from $142
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*All fares above were last found on: Fares are one way/round trip. Fares incl. all fuel surcharges, taxes & fees and our service fees. Displayed fares are subject to change and cannot be guaranteed at the time of booking. See all booking terms and conditions. 202609~Ref:T0zyikSj7keL3I5-1jrlnQ
Insights about cheap flights from Chicago to Seattle – Direct Flights, Duration & Best Travel Time
When it comes to booking cheap flights, having the right information at your fingertips can make all the difference. Dive into the insights for cheap flights from Chicago to Seattle and enhance your travel experience!
Daily Flights
48
Cheapest Month
December, March, September
Avg. Flight Duration
07.30
Peak Season
October
Distance
1,729 miles
Direct Flights
1453
When is the Cheapest Time to Book Flights from CHI to SEA?
Explore data-powered insights and trends for flights from Chicago to Seattle. Discover average fares, cheap months to fly, when to book, and plan smarter.
What’s the cheapest day of the week to fly from Chicago to Seattle?‡
What is the cheapest month to fly from Chicago to Seattle?‡
‡This information is based on historical data from the last 365 days.
Finding Affordable Flights from Chicago to Seattle
- Plan Ahead - One of the keys to securing cheap flights from Chicago to Seattle is to plan your trip well in advance. Airlines often offer lower prices for those who book tickets months ahead. Keep an eye on special promotions and sales events, which can yield significant savings.
- Flexibility is Key - Being flexible with your travel dates can also lead to substantial cost savings. Consider flying during off-peak seasons or on weekdays when prices tend to be lower.
- Set Price Alerts - To keep tabs on flight prices, consider setting up fare alerts. These alerts will notify you when fares from Chicago to Seattle drop, giving you the opportunity to grab cheap deals.
- Consider Nearby Airports - If Seattle has multiple airports, check the prices at each one. Sometimes, flying into a nearby airport and then taking a short train or bus ride to your destination can be a much cheaper option.
- Bundle and Save - Booking your flight and accommodation together as a package can often result in significant savings. CheapOair offers these bundled deals, so make sure to explore this option.
When should I book flights from CHI to SEA? ‡
‡Got flexible travel dates? Use our flight data from the past year to discover ideal time to fly from Chicago to Seattle. Find out which months and days typically offer lower fares and let CheapOair search for the best options.
CheapOair provides the predicted prices for one-way trips or round-trips with a duration of 7 days for domestic and 14 days for international trips based on historical data and available flight information. Graphs are estimates only. Prices are subject to change and can't be guaranteed until ticketed.
Estimated price for
Round-trip
‡Graphs are estimates only. Based on historical data and available flight information. Prices are subject to change and cannot be guaranteed until ticketed.
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Insights About Flying from Chicago to Seattle
Which is the high season to travel from Chicago to Seattle?
The month of October is considered the high season for flying from CHI to SEA. Traveling during the high season can affect ticket prices and availability, making this data crucial for trip planning.
How many direct flights are available from CHI to SEA?
There are a total of 1453 direct flights from Chicago to Seattle. For travelers seeking convenience and shorter travel times, this data is important when choosing flight options.
Which is the low season to travel from Chicago to Seattle?
December, March, September is considered the low season for traveling from Chicago to Seattle, Washington. Travelers looking for cost-effective options and fewer crowds may consider traveling during this period.
How many daily flights are there between Chicago to Seattle?
There are as many as 48 daily flights available for travelers between CHI to SEA. This data offers flexibility in choosing departure times that best suit your schedule.
At what time does the last flight depart to Seattle?
The last flight to Seattle typically departs between 10:00PM - 11:00PM. Travelers who prefer late-night departures will find this information valuable for planning their journey.
What percentage of travelers spent an average of 2 days in Seattle, Washington?
Approximately 39.87% of travelers spent an average of 2 days exploring Seattle. This information can assist in planning the duration of your stay in Seattle
What percentage of CHI to SEA flyers traveled with kids under 14?
About 8% of passengers on flights from Chicago to Seattle were accompanied by children under the age of 14. This information is useful if you're planning a family trip and want to know how common it is to travel with young children on this route.
What percentage of Chicago to Seattle travelers were over 60 years old?
A notable 13% of travelers were aged 60 or older. This statistic provides insights for senior travelers or those seeking a mature travel demographic.
What percentage of CHI to SEA travelers were millennials?
Millennials make up a significant portion of travelers on this route, accounting for 40% of all passengers. If you're a millennial looking to connect with like-minded travelers, this statistic might interest you.
What percentage of Chicago to Seattle travelers were female?
Almost half of the passengers, approximately 50% were female. Knowing the gender distribution can be useful for solo female travelers or those interested in gender-related travel insights.
What percent of Chicago to Seattle travellers booked first or business class?
0% of travelers booked first or business class on this route.
At what time the earliest flight departs from Chicago?
The earliest flight departs at 7:00AM - 8:00AM.
What is the price range of a Chicago to Seattle flight?
Chicago to Seattle Flight Prices usually vary between 0.01 - 576.76.
Which is the most popular airport for connecting flights between Chicago to Seattle?
Denver International Airport is the most popular airport for connecting flights between CHI to SEA.
On which days one can have the most flight options in Seattle?
Monday offer the most flight options in Seattle.
§
All flight facts are based on last 3 months' data except the highest and lowest booking months that are based on last 3 months' data.
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Cheap Flights from Chicago to Seattle
Looking for flights from Chicago to Seattle? Look no more, for you�re at the right place. Book cheap flights from Chicago to Seattle on CheapOair and enjoy great discounts. Whether its leisure or a business trip, we offer the most competitive rates on flight tickets to destinations around the world. Grab CHI to SEA flight deals on CheapOair and save big! Hurry, our cheap rates are not going to last forever, so make your bookings right away!
Airports in Chicago
The city of Chicago is served by 2 airports - Chicago O'Hare International Airport and Midway International Airport. The Chicago O' Hare International Airport or O' Hare International Airport is the primary airport serving the Chicago City. It is a public airport situated in Chicago, Illinois, U.S.A. The airport offers both cargo & passenger services to both domestic and international destinations including London, Toronto, Frankfurt, Dublin, Montreal, Paris, Munich, Amsterdam, Doha, Seoul, Dubai, New York, Boston, Denver, Atlanta, San Francisco, Washington, and more.
Both the airports are well connected with the city through various modes of transportation. These include shuttles/buses, taxis, limo, rideshare, rental cars, public transit, and more.
Explore Seattle
Seattle, a seaport on the west coast of the USA, is a seat of King County, Washington. The city occcupies a slender isthmus between the lake Washington and Puget Sound. Seattle is a captivating city with an immense range of activities that is certain to excite even the most choosey of the tourists. It is an environmentally concious city offering visitors with a plethora of trails for biking and an excellent zoo featuring animals in their natural habitat. Moreover, Seattle also boasts numerous museums, art galleries, and restaurants.
Things to do in Seattle
EMP Museum
EMP Museum blends music and sci-fi into an arresting experience. The museum was founded in 2000 and offers film festivals, battle of the band competitions, and changing exhibits. EMP Museum incorporates hands-on activities, unique artifacts from the pop music, and a rare sculpture made from more than 500 guitars.
Museum of Flight
The largest private air and space museum around the globe, Museum of Flight features to vintage planes, a retired Air Force One jet, planes that have flown in wars, and a space shuttle exhibit. The museum is located at King County Airport. Other major displays at the museum include a British Airways Concorde, a replica of the Lockheed Electra Amelia Earhart, and World War I fighter plane.
Pioneer Square
Located in the heart of Seattle's historic district, Pioneer Square is a place where Renaissance buildings are replete with gift and other specialty shops, wine bars, art galleries, and yuppie restaurants. The square was established in 1852 and is home to the century-old Smith Tower, which was once the tallest building on the West Coast.
Best Time to Fly to Seattle
The best time to visit Seattle is from September to October. During this period, the tourism in the city is on its peak and thus hotel room availability drops. Early fall is also an excellent time of the year to visit the city. In early fall, the number of tourists remains low and thus it is an apt time to visit for serenity seekers.
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