SEA - ORD

C$ 150 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 15/5. 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, 0 bags

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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Everything you should know

Cheapest round-trip
C$ 273
Overall average: C$ 394
United Airlines
Fri 17/4Wed 22/4
SEA - ORD • 1 stop
Cheapest direct flights
C$ 270
Typical prices: C$ 314-C$ 519
Delta
Thu 9/4Wed 15/4
SEA - ORD • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
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
Cheapest • from C$ 273 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with Alaska Airlines, American Airlines, and others. Average duration is 4h 11m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 18% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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!
Flight Deals
Booking Insights
Expert advice
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, 17 Apr - Wed, 22 Apr
United Airlines Logo
3:48 p.m. - 12:30 a.m.
SEA
-
ORD
6h 42m
1 stop
United Airlines Logo
8:00 p.m. - 10:42 p.m.
ORD
-
SEA
4h 42mdirect
C$ 273United Airlines
Wed, 22 Apr - Sat, 25 Apr
Southwest Logo
6:50 a.m. - 6:50 p.m.
SEA
-
ORD
10h 00m
1 stop
Southwest Logo
3:05 p.m. - 10:10 p.m.
ORD
-
SEA
9h 05m
1 stop
C$ 277Southwest
Sat, 25 Apr - Tue, 28 Apr
Southwest Logo
9:00 a.m. - 11:25 p.m.
SEA
-
ORD
12h 25m
2 stops
Southwest Logo
10:30 a.m. - 4:55 p.m.
ORD
-
SEA
8h 25m
1 stop
C$ 284Southwest
Sat, 18 Apr - Sat, 25 Apr
Southwest Logo
5:45 a.m. - 2:20 p.m.
SEA
-
ORD
6h 35m
1 stop
Southwest Logo
3:05 p.m. - 10:10 p.m.
ORD
-
SEA
9h 05m
1 stop
C$ 287Southwest
Thu, 7 May - Sat, 9 May
United Airlines Logo
10:53 p.m. - 5:03 a.m.
SEA
-
ORD
4h 10mdirect
United Airlines Logo
4:20 p.m. - 7:00 p.m.
ORD
-
SEA
4h 40mdirect
C$ 288United Airlines
Tue, 21 Apr - Sat, 25 Apr
Southwest Logo
11:35 a.m. - 11:55 p.m.
SEA
-
ORD
10h 20m
2 stops
Southwest Logo
3:05 p.m. - 10:10 p.m.
ORD
-
SEA
9h 05m
1 stop
C$ 294Southwest
Wed, 6 May - Sat, 9 May
Delta Logo
5:59 p.m. - 11:58 p.m.
SEA
-
ORD
3h 59mdirect
Delta Logo
6:55 p.m. - 9:40 p.m.
ORD
-
SEA
4h 45mdirect
C$ 298Delta
Wed, 22 Apr - Thu, 23 Apr
United Airlines Logo
3:48 p.m. - 12:30 a.m.
SEA
-
ORD
6h 42m
1 stop
United Airlines Logo
4:20 p.m. - 7:00 p.m.
ORD
-
SEA
4h 40mdirect
C$ 302United Airlines
Sat, 18 Apr - Sat, 25 Apr
Southwest Logo
9:00 a.m. - 10:20 p.m.
SEA
-
ORD
11h 20m
2 stops
Southwest Logo
3:05 p.m. - 10:10 p.m.
ORD
-
SEA
9h 05m
1 stop
C$ 307Southwest
Wed, 6 May - Sat, 16 May
Delta Logo
11:14 p.m. - 8:27 a.m.
SEA
-
ORD
7h 13m
1 stop
Delta Logo
6:55 p.m. - 9:40 p.m.
ORD
-
SEA
4h 45mdirect
C$ 311Delta
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, Tuesday is the most expensive day to fly from Seattle to Chicago. For your return ticket, we recommend flying on a Friday and avoiding Mondays 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 February, where tickets cost C$ 339 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is C$ 469 and C$ 457 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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at C$ 363 on average.

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 4 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Expert advice

Expert advice for your flight from Seattle to Chicago

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines, Alaska Airlines and SEA

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.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and ORD

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.

Good to know

Low seasonJanuary
Cheapest flightC$ 150
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly (5% more expensive 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$ 150 for a one-way ticket and C$ 273 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?

    American Airlines, Alaska Airlines, Delta, Aeromexico, and Virgin Atlantic offer inflight Wi-Fi service on the Seattle to Chicago flight route.

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

    The Boeing 737-800 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 is the only airline alliance operating flights between Seattle and Chicago.

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

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

  • Which is the best airline for flights from Seattle to Chicago, Alaska Airlines or Hawaiian Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Chicago are Alaska Airlines and Hawaiian Airlines. With an average price for the route of C$ 380 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Hawaiian Airlines is also a great choice for the route, with an average price of C$ 482 and an overall rating of 7.8.

  • 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$ 216 or less one-way and C$ 364 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 airlines 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.
7.9
Alaska AirlinesOverall score based on 12052 reviews
8.5Crew
7.8Comfort
8.1Boarding
7.1Food
7.0Entertainment
Airline reviews

Never got on because the airline sent the WRONG plane to take us on our first leg of the trip so we missed ALL connecting flights. No help available from anyone at the airline…

2.0 MediocreAnonymous, Mar 2026
SEA - MSP
Read more Alaska Airlines reviews

Never got on because the airline sent the WRONG plane to take us on our first leg of the trip so we missed ALL connecting flights. No help available from anyone at the airline…

The crew inside the airport for Alaska was rude, lazy and incompetent

The flight was extremely smooth, and so was the landing. Great piloting.

Plane was clean, staff was professional and flight was on time. No built in tv was still ok, as programs were offered that could synch to smart phones.

J was in the ER x 3...3 protruding discs...contacted Alaska many many days prior to cancel and request a refund or a credjt.. they only gave me 50 % credit....outrageous seeing how i have a doctors letter....just plain inhuman. AI sucks!

The flight was too short. No snacks or drinks offered.

I'm not sure if you are going to ask me about the check in process. I could not get my boarding pass, so I had to stop at the American desk before security. I also had a difficult time downloading the app with the confirmation code for the two flights.

The flight attendant was friendly and attentive. Although our interaction was brief—- it made a difference. The crew was upfront about turbulence. I like the Maui pretzels.

Everything was good. Please have a wheat free option for snacks in the future.

They are always so great! Friendly, on time if not early, organized boarding process. Great price too.

The crew were exceptionally nice and accommodating. My wife was tired after the flight from Haneda, Tokyo. They let her sleep and served her dinner later after she woke up, before we landed in PDX.

No charging outlets worked. Other than collecting trash attendants didn’t come around. No one could hear flight attendants announcements during the flight. Seat pads were horrible. Sitting on a board for 5 hours. What happened to Hawaiian airlines comfort, hospitality, and extras? Our pilots did an excellent job trying to minimize turbulence and incredible job in landing in windy conditions.

There was no wifi available at any price -- the plane did not have wifi equipment. Movie choices were blah - hits from the past; nothing recent. The food was blah airplane food. They should have had Mai Tai drinks available as per the Hawaiian Airlines magazine, but they had none onboard.

I like that if they asked you to checked in a bag at the gate they give you priority to board

Horrible food and crew. Crew were laughing and talking loud while people were trying to sleep

Yall need to integrate your system with Alaska more efficiently. They booted me off the first flight because of a discrepancy on your end.

The crew at Hawaiian Airlines was fantastic. Kind and hard working. The pilots were great with giving us all the updates to make sure we were informed.

Very good. Nice plane and we sat in economy plus - bigger seats, more room. They served a meal and snacks, and the meal was an apple stuffed pancake that was very good! The snack for us was a hummus sandwich - also very good. The flight attendants were helpful and nice. They have plenty of movies and shows to watch. My only negative -- they changed our flights around and did not adjust the layovers, so we ended up with a very long and unnecessary layover in Honolulu.

I liked the Starlink WiFi but didn't like how they said they were the only airline to offer a free meal and it turns out to be just a standalone sandwich and then charge for snacks to go with it. Rather have the free snacks like Southwest, but have the option to purchase a decent meal for a 5+ hour flight.

Flight scheduled to take off at 5.55pm but it did not take off until 7pm due to some food delivery delay.

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

Information on your arrival and departure airports