SEA - ORD

C$ 130 Find Cheap Flights from Seattle to Chicago

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Chicago departing on 4/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago O'Hare Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Chicago, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Chicago, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Seattle to Chicago (SEA-ORD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Chicago that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Chicago

Fri, 7 Nov - Tue, 11 Nov
United Airlines Logo
3:37 p.m. - 12:59 a.m.SEA-ORD
7h 22m1 stop
United Airlines Logo
8:02 p.m. - 10:45 p.m.ORD-SEA
4h 43mdirect
C$ 263United Airlines
Find Deal
Fri, 9 Jan - Sun, 18 Jan
Alaska Airlines Logo
6:00 p.m. - 11:59 p.m.SEA-ORD
3h 59mdirect
Alaska Airlines Logo
6:50 p.m. - 9:41 p.m.ORD-SEA
4h 51mdirect
C$ 265Alaska Airlines
Find Deal
Thu, 27 Nov - Wed, 3 Dec
Alaska Airlines Logo
10:53 a.m. - 5:06 p.m.SEA-ORD
4h 13mdirect
Alaska Airlines Logo
3:05 p.m. - 9:43 p.m.ORD-SEA
8h 38m1 stop
C$ 266Alaska Airlines
Find Deal
Thu, 8 Jan - Mon, 19 Jan
Alaska Airlines Logo
5:30 a.m. - 1:04 p.m.SEA-ORD
5h 34m1 stop
Alaska Airlines Logo
2:05 p.m. - 6:23 p.m.ORD-SEA
6h 18m1 stop
C$ 267Alaska Airlines
Find Deal
Fri, 26 Sep - Wed, 1 Oct
Delta Logo
7:10 a.m. - 1:20 p.m.SEA-ORD
4h 10mdirect
Delta Logo
7:10 a.m. - 9:45 a.m.ORD-SEA
4h 35mdirect
C$ 269Delta
Find Deal
Tue, 7 Oct - Tue, 14 Oct
Delta Logo
1:30 p.m. - 9:43 p.m.SEA-ORD
6h 13m1 stop
Delta Logo
7:37 a.m. - 10:15 a.m.ORD-SEA
4h 38mdirect
C$ 273Delta
Find Deal
Sun, 16 Nov - Sat, 22 Nov
Hawaiian Airlines Logo
12:20 a.m. - 6:22 a.m.SEA-ORD
4h 02mdirect
Hawaiian Airlines Logo
6:02 p.m. - 8:55 p.m.ORD-SEA
4h 53mdirect
C$ 280Hawaiian Airlines
Find Deal
Tue, 10 Mar - Wed, 11 Mar
Hawaiian Airlines Logo
11:00 p.m. - 5:04 a.m.SEA-ORD
4h 04mdirect
Hawaiian Airlines Logo
7:45 a.m. - 10:36 a.m.ORD-SEA
4h 51mdirect
C$ 281Hawaiian Airlines
Find Deal
Wed, 24 Sep - Wed, 1 Oct
Southwest Logo
1:40 p.m. - 11:40 p.m.SEA-ORD
8h 00m1 stop
Southwest Logo
6:15 a.m. - 11:45 a.m.ORD-SEA
7h 30m1 stop
C$ 296Southwest
Find Deal
Fri, 26 Sep - Wed, 1 Oct
Southwest Logo
6:30 a.m. - 10:20 p.m.SEA-ORD
13h 50m1 stop
Southwest Logo
3:10 p.m. - 9:40 p.m.ORD-SEA
8h 30m1 stop
C$ 305Southwest
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by travel experts
United's Economy Plus offers extra legroom for comfort.
Use SEA Spot Saver for faster security at Seattle.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
United Airlines
Cheapest • from C$ 263 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 46% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 19% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
C$ 263
Overall average: C$ 450
United Airlines
Fri 7/11Tue 11/11
SEA - ORD • 1 stop
Cheapest direct flights
C$ 263
Typical prices: C$ 330-754
Alaska Airlines
Wed 26/11Thu 4/12
SEA - ORD • Direct
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Chicago!
Expert advice

Expert advice for your flight from Seattle to Chicago

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
American Airlines

American's Main Cabin Extra offers early boarding and complimentary drinks, enhancing travel comfort.


American Airlines' Wi-Fi offers 20 minutes free with an ad, useful for quick tasks.

Read more about American Airlinesby Harriet Baskas
United Airlines

United's Premier Access offers priority check-in and boarding, ideal for business travelers.


United's Economy Plus seats offer up to 15 cm more legroom, enhancing comfort on medium-haul flights.

Read more about United Airlinesby Stefanie Waldek
Alaska Airlines

Alaska's Premium Class offers priority boarding and complimentary drinks, ideal for comfort seekers.


Alaska's 20-minute baggage guarantee ensures quick baggage claim, offering peace of mind.

Read more about Alaska Airlinesby Harriet Baskas
Airports
SEA

Use the SEA Spot Saver for expedited security screening without a paid membership. Book online or via the flySEA app.

Read more about SEAby Harriet Baskas
ORD

Take the CTA Blue Line train from ORD to downtown Chicago in about 45 minutes, avoiding traffic delays.

Read more about ORDby Stefanie Waldek
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines, Alaska Airlines and SEA

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and ORD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Booking Insights

KAYAK's insights & trends for Seattle to Chicago flights

Get data-powered insights and trends into flights from Seattle to Chicago to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to Chicago?

The average price of all round-trip flights from Seattle to Chicago O'Hare Intl Airport clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Chicago on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Seattle to Chicago. For your return ticket, we recommend flying on a Thursday and avoiding Wednesdays for the best deals.

What is the cheapest month to fly from Seattle to Chicago O'Hare Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Chicago O'Hare Intl Airport is September, where tickets cost C$ 345 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is C$ 544 and C$ 461 respectively.

Can I save money by flying with a layover from Seattle to Chicago O'Hare Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of C$ 238, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Seattle to Chicago O'Hare Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Chicago O'Hare Intl Airport, you should book around 3 weeks before departure, which saves you about 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Find deals

Good to know

Low seasonJanuary
Cheapest flightC$ 130
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly and prices are also 15% lower on average.
Flight from Seattle to Chicago

When to book flights from Seattle to Chicago

Are your dates flexible? Find out the best times to travel from Seattle to Chicago based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to Chicago flights

  • Are there any attractions at Chicago O’Hare Airport?

    Yes, Chicago O’Hare Airport has several attractions, such as the Brachiosaurus Dinosaur, the Butch O'Hare Exhibit, the Hall of Flags, a light sculpture, an urban garden, painted benches, and a yoga room. If you need to spend the night at the airport, the CDA provides a cot, a pillow, and a passenger amenity kit with toiletries.

  • What's travel options are available from Chicago O’Hare Airport to Downtown Chicago?

    The CTA blue line L train offers a quick and convenient transportation option that'll take about 45min from O’Hare Airport. At the airport, you can take the blue line from Terminals 1, 2, and 3. Follow the "CTA Trains" signs to get there. It's a short distance from the baggage claim area. If you'd rather travel by bus, the shuttle pickup point is located outside the baggage claim at all terminals. Alternatively, you can use the Airport Supersaver, also in the same location, but allows more luggage. If a taxi sounds more like your preferred travel option, taxi stands are located outside the terminals.

  • Are there any hotels at Chicago O’Hare Airport?

    You can stay at the Hilton Chicago O'Hare Airport Hotel. It's directly across Terminal 1, 2, and 3 and within walking distance through the underground walkways or the Airport Transit System from Terminal 5.

  • Are there restaurants at Seattle-Tacoma Airport?

    If you arrive early at the Seattle Tacoma International Airport and need to grab a bite, you'll find several restaurants, including McDonald's, Beecher's Handmade Cheese, Hachi-Ko, Starbucks, Caffe D'arte, and Dish D'Lish, among others.

  • What is the cheapest flight from Seattle to Chicago O'Hare Intl Airport?

    In the last 3 days, the lowest price for a flight from Seattle to Chicago O'Hare Intl Airport was C$ 94 for a one-way ticket and C$ 190 for a round-trip.

  • Which airports will I be using when flying from Seattle to Chicago?

    Seattle airport is called Seattle/Tacoma Intl and the only airport in Chicago is Chicago O'Hare Intl.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Chicago?

    All the following airlines offer inflight Wi-Fi service on the Seattle to Chicago flight route: American Airlines, Alaska Airlines, Hawaiian Airlines, Delta, JetBlue, and Air France.

  • Which aircraft models fly most regularly from Seattle to Chicago?

    The Boeing 737-900 Passenger/BBJ3 (winglets) is the aircraft model that flies most regularly on the Seattle to Chicago flight route.

  • Which airline alliances offer flights from Seattle to Chicago?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Seattle and Chicago, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Seattle to Chicago?

    There are direct flights from Seattle to Chicago on a daily basis.

  • How does KAYAK find such low prices on flights from Seattle to Chicago?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Chicago.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Chicago?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from Seattle is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Chicago?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Chicago?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Chicago O'Hare Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 683 or less one-way and C$ 578 or less round-trip.
  • If you're planning to travel out of Seattle into Chicago, you can book your flight from Seattle-Tacoma International Airport (SEA). The airport is about 13 miles away from Seattle city center. You can easily get there through the Link Light Rail that departs from Westlake Station in Downtown Seattle about every 15min.
  • Chicago has two major airports to choose from for your arrival, Chicago O'Hare International Airport (ORD) and Chicago Midway International Airport (MDW). Chicago O'Hare International Airport is the largest of the two and the most popular, but Chicago Midway International Airport is closer to Chicago’s city center. MDW is about 12 miles away, while ORD is about 18 miles away from Downtown Chicago.
  • Airlines offering non-stop flights from Seattle to Chicago include Alaska Airlines, United Airlines, Delta Air Lines, American Airlines, and Southwest Airlines. Spirit Airlines offers connecting flights with one or two layovers.
  • Seattle-Tacoma Airport has lounging areas if you get there early and need to relax for a while before boarding your flight. These lounges include the Club SEA that charges about $45, Trail Head BBQ Bar, and the Centurion Lounge.
  • Seattle-Tacoma Airport is the main hub for Alaska Airlines, as its headquarters are close by. It's also a hub for Delta Air Lines and happens to be its international gateway to Asia. Chicago O’Hare is the hub for American Airlines and United Airlines and the focus city for Frontier Airlines and Spirit Airlines.
  • Seattle-Tacoma International Airport has a children's play area with nursing rooms and suites. If you call ahead, you can get wheelchair assistance, special dietary needs, medical storage, and specific seat arrangements. Chicago O'Hare International Airport also offers similar services.

Prefer to fly direct from Seattle to Chicago?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to Chicago O'Hare Intl.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to Chicago O'Hare Intl Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Chicago O'Hare Intl

Monday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Tuesday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Wednesday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Thursday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Friday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Saturday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Sunday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

See more nonstop flights

Direct returns

Chicago O'Hare Intl to Seattle/Tacoma Intl

Monday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Tuesday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Wednesday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Thursday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Friday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Saturday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Sunday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

See more nonstop flights

Reviews of the top airline flying from Seattle to Chicago

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Chicago? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
8.5Crew
7.0Entertainment
7.8Comfort
7.1Food
8.1Boarding
Airline reviews

Flight was delayed as it always is with Alaska airlines. Particularly to smaller airports. No AC on the plane so it was miserably hot.

4.0 OkayKristina, Sep 2025SEA - GTF
Read more Alaska Airlines reviews

Flight was delayed as it always is with Alaska airlines. Particularly to smaller airports. No AC on the plane so it was miserably hot.

Slow boarding and the flight crew hit me with the food cart

It was very nice flight going to Seattle and coming back to Omaha. Even got in early. Very easy to check in using the Alaska Airlines App. Thank you.

They offer the only direct flight from Seattle to Pittsburgh.

Seattle airport is a mess. New bag tag system has potential, but you need more signage to guide passengers through the process as to where to go next. Told to go in one direction and then met with a very rude agent when we did. He blamed his attitude on all the folks flying over labor day that were paying his salary. Gate area for D3 is a mess compared to the North terminal. Overall Alaska is number 1 in my book.

After we boarded there was quite a long time before we actually took off, and there were no announcements from crew about why we were delayed. Later when they did make announcements they were largely inaudible. There was no food (other than for purchase) on the flight and no entertainment. Thats not a complaint, just explaining my ratings in those categories. The flight was smooth. Baggage claim was rapid.

The airline staff was great! The best safety review ive ever had!

Agent boarding us in San Diego lectured me on showing up on time for the flight, and said that if I had been three minutes later, he would have denied myself and my wife boarding. Our trusted traveler numbers were not in the system, even though I entered them when I bought the tickets. Our food orders were not in the system, even though I entered them prior to the flight. My wife requires a wheelchair, and that was delayed on both flights.

Why was I charged for a glass of wine on one flight and not on another? Why no movie or TVs? It was a long flight.

5 1/2 hour trip. Nice plane. easy boarding. Could have used a bit more beverage service but it was a red eye flight and they didn't want to wake everyone.

Everything you need to know for your flight from Seattle to Chicago

Information on your arrival and departure airports

Seattle (SEA)
O'Hare Intl (ORD)

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