Cheap flights from Seattle to Chicago from C$ 115
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Chicago departing on 7/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Hawaiian Airlines flights from Seattle to Chicago
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Alaska Airlines flights from Seattle to Chicago
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How to get the cheapest flight ticket from Seattle to Chicago
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Chicago?
The month of September is another great option to travel to Chicago, with average flight prices from Seattle averaging around C$ 341.
What is the cheapest day to depart on your flight to Chicago?
The cheapest day to depart on your flight to Chicago is on a Thursday when prices can be found for as low as C$ 679. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around C$ 1,225. These prices are subject to change though, so be sure to set up a Price Alert for flights to Chicago.
What is the cheapest time of day to depart on your flight to Chicago?
In the afternoon is the cheapest time of day to fly from Seattle to Chicago when you can find flight prices for as low as C$ 333. Flying to Chicago in the afternoon is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to Chicago, so prices are often more expensive at around C$ 1,199 per ticket.
What is the cheapest Seattle/Tacoma Intl to Chicago flight route?
Fly from Seattle/Tacoma Intl to Chicago O'Hare Intl for the best Seattle/Tacoma Intl - Chicago flight prices
How far in advance should I book a flight to Chicago?
You are more likely to see cheaper flights to Chicago from Seattle when booking 6 weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around C$ 437 when searching 6 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Seattle for as low as C$ 373 on momondo.
What cabin class options are available on Seattle/Tacoma Intl to Chicago flights?
There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How many flights depart from Seattle to Chicago on average per day?
As of April 2025, there are 48 flights per day flying from Seattle to Chicago. The most common time of day flights depart is 10:00a.m., with 53% of flights taking off at noon.
How many flights depart from Seattle to Chicago on average per week?
339 flights are operational weekly from Seattle to Chicago as of April 2025. The most popular departure day for this route is Fri, with 17% of flights per week taking off on this day.
When to book flights from Seattle to Chicago
Cheap Seattle to Chicago (SEA to CHI) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Chicago
How far is Seattle/Tacoma Intl to Chicago by plane?
A flight from Seattle/Tacoma Intl to Chicago will travel around 2787.8 km. Flights usually cover this in 4h 00m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Chicago?
Prices for flights from Seattle/Tacoma Intl Airport to Chicago are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Chicago?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Chicago is 2 as of April 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Chicago?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Chicago.
What documentation or ID do you need to fly to Chicago?
The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to Chicago?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Chicago is Boeing 737-800 (23.44% of total bookings). The next most popular plane models are Boeing 737-900 Passenger/BBJ3 (winglets) (14.23%), Boeing 737 MAX 8 (12.04%), and Airbus A320-100/200 (11.50%).
What is the most popular airline from Seattle to Chicago?
momondo data reveals that the most frequently booked airline on the route from Seattle to Chicago is Alaska Airlines, representing 71% of all bookings. The subsequent popular airlines are Delta at 15% and Frontier at 15%.
Best airlines flying from Seattle to Chicago
Compare and see reviews for airlines that fly from Seattle to Chicago with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 119 | Free Cancellation | Rating 8.0 7,911 reviews | |||
| PriceFrom C$ 178 | Free Cancellation | Rating 8.0 9,851 reviews |
Delta Flights From Seattle to Chicago
Delta operates around 8 flights from Seattle to Chicago every week. The average price of these flights found in the last 72 hours has been C$ 364, but momondo users have found Delta deals from Seattle to Chicago from as low as C$ 84 round-trip. Delta has been scored 8.0/10 in 7,911 reviews.
Alaska Airlines Flights From Seattle to Chicago
Across 9,851 Alaska Airlines reviews on momondo, the average score is 8.0/10. Alaska Airlines flies from Seattle to Chicago about 24 times each week, with ticket deals ranging from C$ 127 to C$ 246. Price data is based on momondo searches in the last 72 hours.
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Why should I use momondo to find a flight deal from Seattle to Chicago?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Chicago . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Seattle to Chicago with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Chicago from Seattle with this policy.
How can momondo help me find flights from Seattle to Chicago?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Chicago.
I’m not ready to book a flight from Seattle to Chicago right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Chicago from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.