SEA - ORD

C$ 87 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 18/5. 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

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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Cheap Flight Deals 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.

Recent round-trip flight deals from Seattle to Chicago

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Chicago.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Alaska Airlines Logo
10:50 a.m. - 5:02 p.m.SEA-ORD
4h 12mdirect
Alaska Airlines Logo
7:51 p.m. - 10:30 p.m.ORD-SEA
4h 39mdirect
C$ 227Alaska Airlines
Find Deal
Tue, 3 Jun - Tue, 3 Jun
Hawaiian Airlines Logo
4:19 p.m. - 10:23 p.m.SEA-ORD
4h 04mdirect
Hawaiian Airlines Logo
7:51 p.m. - 10:30 p.m.ORD-SEA
4h 39mdirect
C$ 234Hawaiian Airlines
Find Deal
Wed, 21 May - Wed, 28 May
Hawaiian Airlines Logo
4:19 p.m. - 10:23 p.m.SEA-ORD
4h 04mdirect
Hawaiian Airlines Logo
8:00 a.m. - 10:27 a.m.ORD-SEA
4h 27mdirect
C$ 241Hawaiian Airlines
Find Deal
Fri, 30 May - Tue, 3 Jun
United Airlines Logo
7:05 a.m. - 5:10 p.m.SEA-ORD
8h 05m1 stop
United Airlines Logo
7:10 a.m. - 9:43 a.m.ORD-SEA
4h 33mdirect
C$ 242United Airlines
Find Deal
Tue, 26 Aug - Sat, 30 Aug
United Airlines Logo
7:05 a.m. - 5:10 p.m.SEA-ORD
8h 05m1 stop
United Airlines Logo
7:35 p.m. - 10:20 p.m.ORD-SEA
4h 45mdirect
C$ 265United Airlines
Find Deal
Wed, 3 Sep - Wed, 10 Sep
Delta Logo
5:50 p.m. - 11:59 p.m.SEA-ORD
4h 09mdirect
Delta Logo
7:09 a.m. - 9:45 a.m.ORD-SEA
4h 36mdirect
C$ 275Delta
Find Deal
Sat, 7 Jun - Sat, 14 Jun
Delta Logo
7:15 a.m. - 1:30 p.m.SEA-ORD
4h 15mdirect
Delta Logo
6:59 p.m. - 9:42 p.m.ORD-SEA
4h 43mdirect
C$ 281Delta
Find Deal
Tue, 3 Jun - Sat, 7 Jun
Southwest Logo
11:50 a.m. - 10:20 p.m.SEA-ORD
8h 30m1 stop
Southwest Logo
6:15 a.m. - 11:45 a.m.ORD-SEA
7h 30m1 stop
C$ 288Southwest
Find Deal
Wed, 27 Aug - Wed, 3 Sep
Southwest Logo
1:40 p.m. - 11:40 p.m.SEA-ORD
8h 00m1 stop
Southwest Logo
5:25 p.m. - 12:15 a.m.ORD-SEA
8h 50m1 stop
C$ 329Southwest
Find Deal
Tue, 9 Sep - Thu, 11 Sep
Spirit Airlines Logo
3:20 p.m. - 5:25 a.m.SEA-ORD
12h 05m1 stop
Spirit Airlines Logo
11:50 a.m. - 12:10 a.m.ORD-SEA
14h 20m1 stop
C$ 347Spirit Airlines
Find Deal
Wed, 7 May - Thu, 8 May

Expert advice for your flight from Seattle to Chicago

 
Snippets provided in this section are AI-generated based on a summarization 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 specific 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.

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.

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.

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

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 Tuesday and avoiding Thursdays 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$ 350 (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$ 570 and C$ 492 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$ 468, 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. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low season

January

High season

June

Cheapest flight

C$ 87
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly (11% 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.

Flights from Seattle to Chicago: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Seattle to Chicago 
Verified travelerFlew with Alaska AirlinesSEA-ORDOct 2024
Alaska airline has best boarding and baggage policy.
ShirleyFlew with Alaska AirlinesSEA-ORDJun 2024
I generally fly United or Delta out of South Bend, IN into Seattle or wherever I'm going. I have no issues with Alaska. I only use Alaska when flying with my family from the Seattle area back to Chicago O'Hare and then we drive to SW Michigan where I live. Alaska Airlines has a beautiful new terminal at SeaTac as well. A good airline. I do like planes that have screens on the back of the seats.
Verified travelerFlew with United AirlinesSEA-ORDJul 2024
Budget if you’re planning on shopping for meals or souvenirs at Sea-Tac, it’s not cheap.
Verified travelerFlew with Alaska AirlinesSEA-ORDJun 2024
Bring books and earplugs for the four hour flight and enjoy Chicago!

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$ 63 for a one-way ticket and C$ 164 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 737-800 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, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Chicago, with oneworld 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.

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

    The two airlines most popular with KAYAK users for flights from Seattle to Chicago are Alaska Airlines and Delta. With an average price for the route of C$ 370 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of C$ 503 and an overall rating of 8.0.

  • 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.

See more FAQs

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$ 423 or less one-way and C$ 374 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.
See more tips

Prefer to fly direct from Seattle to Chicago?

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

Aer Lingus,Air Tahiti Nui,Alaska Airlines, +20 more

Aer Lingus,Air Tahiti Nui, +21 more

Tuesday

Aer Lingus,Air France,Air Tahiti Nui, +22 more

Aer Lingus,Air France, +23 more

Wednesday

Aer Lingus,Air Tahiti Nui,Alaska Airlines, +20 more

Aer Lingus,Air Tahiti Nui, +21 more

Thursday

Aer Lingus,Air France,Air Tahiti Nui, +22 more

Aer Lingus,Air France, +23 more

Friday

Aer Lingus,Air Tahiti Nui,Alaska Airlines, +22 more

Aer Lingus,Air Tahiti Nui, +23 more

Saturday

Aer Lingus,Air Tahiti Nui,Alaska Airlines, +21 more

Aer Lingus,Air Tahiti Nui, +22 more

Sunday

Aer Lingus,Air France,Air Tahiti Nui, +22 more

Aer Lingus,Air France, +23 more

See more nonstop flights

Direct returns

Chicago O'Hare Intl to Seattle/Tacoma Intl

Monday

Aer Lingus,Air France,Air Tahiti Nui, +22 more

Aer Lingus,Air France, +23 more

Tuesday

Aer Lingus,Air France,Air Tahiti Nui, +20 more

Aer Lingus,Air France, +21 more

Wednesday

Aer Lingus,Air France,Air Tahiti Nui, +20 more

Aer Lingus,Air France, +21 more

Thursday

Aer Lingus,Air France,Air Tahiti Nui, +22 more

Aer Lingus,Air France, +23 more

Friday

Aer Lingus,Air France,Air Tahiti Nui, +22 more

Aer Lingus,Air France, +23 more

Saturday

Aer Lingus,Air France,Air Tahiti Nui, +22 more

Aer Lingus,Air France, +23 more

Sunday

Aer Lingus,Air France,Air Tahiti Nui, +21 more

Aer Lingus,Air France, +22 more

See more nonstop flights
See more nonstop flights

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.
8.0
Alaska AirlinesOverall score based on 9911 reviews
8.2Boarding
7.9Comfort
8.5Crew
7.1Entertainment
7.1Food
Airline reviews

Awful. We got the last seats and they don't recline. We've been on this horrible journey since 6am and won't get to our destination almost a full day later. Oh and no food, either. Never again.

2.0 MediocreDeb, Apr 2025SEA - HNL
Read more Alaska Airlines reviews

Awful. We got the last seats and they don't recline. We've been on this horrible journey since 6am and won't get to our destination almost a full day later. Oh and no food, either. Never again.

An uneventful flight is a good experience although one of the pilots gauges wasn’t working right so we had a half hour delay—no one can foresee that.

Plane was delayed and got me in past bedtime. But more importantly, my tsa precheck number wasn’t on my ticket so had to deal with the general line. Oh well, guess the delay helped that situation.

It was as good as flying can be, which is still very uncomfortable. Clean new aircraft, great crew.

Everything was good. The flight attendants were great. I was disappointed that there wasn’t any screens on the back of the seats to watch movies, tv, etc. I only had my phone to watch movies on.

Flight delayed due to engine issue. For 3+ hours still not on flight

Could have had more of a beverage selection than water and apple juice.

They only had one flight to my destination for the entire day. Six hour layover. Coming from their sister airline we didn't have any boarding grouping on our boarding tickets. Had to ask where we were within the grouping.

Flight was over an hour late, and we got notified every 15 minutes, beginning right at boarding, that it would only be 15 more minutes until we finally left about 75 minutes late. Of course, no compensation was offered.

Just in first class they offer blanquets, for main cabin there was no blanquets even if I would buy them

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

Terrible and im avoiding them in the future. My initial flight was delayed causing me to rebook my flight and when speaking with the representative to rebook I explained this is the second time my flights were delayed and they did nothing to help me. I wasn't booked to comfort plus or given a voucher or anything. I was almost late for my meeting that I needed to attend on Monday because of the games delta played delaying my flights even more and putting me in the very back of the plane next to an extremely intoxicated passenger

Great staff. Wifi is terrible. Signing up for skylines is a painstaking process. Had to call customer service just to get my flight itinerary and confirmation sent to me. Consistent delays. A well staffed company that is run so poorly. Upper management needs to be renewed.

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

Information on your arrival and departure airports

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