SEA - ORD

C$ 222 Find Cheap Flights from Seattle to Chicago – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 373
Typical prices: C$ 429-C$ 652
Delta
Tue 27/11Sun 2/12
SEA - ORD • Direct
Cheapest direct flights
C$ 387
Typical prices: C$ 432-C$ 655
Alaska Airlines
Sun 30/12Mon 1/1
SEA - ORD • Direct
Advice from real travellers
United Economy Plus adds up to 15 cm legroom; Alaska Premium Class adds drinks.
American Main Cabin Extra adds early boarding; Alaska has a baggage guarantee.
Expert advice
+1
Expert advice
+1
Direct flights
You can fly direct with American Airlines, Alaska Airlines, and others. Average duration is 4h 11m.
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travellers who book at least 9 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 35% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg C$ 336 (round-trip)
Shortest trip • 7h 32m (one-way)
Insights
Insights
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to Chicago O'Hare Intl Airport!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Seattle to Chicago (SEA-ORD)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Chicago

Tue, 1 Dec - Sat, 5 Dec
Delta Logo
5:50 p.m. - 11:57 p.m.SEA  Seattle/Tacoma Intl-ORD Chicago O'Hare Intl
4h 07mdirect
Delta Logo
12:32 p.m. - 5:30 p.m.ORD  Chicago O'Hare Intl-SEA Seattle/Tacoma Intl
6h 58m1 stop Minneapolis St Paul
C$ 373Delta
Tue, 1 Dec - Mon, 7 Dec
Delta Logo
7:20 a.m. - 1:30 p.m.SEA  Seattle/Tacoma Intl-ORD Chicago O'Hare Intl
4h 10mdirect
Delta Logo
6:20 a.m. - 10:45 a.m.ORD  Chicago O'Hare Intl-SEA Seattle/Tacoma Intl
6h 25m1 stop Minneapolis St Paul
C$ 373Delta
Fri, 27 Nov - Wed, 2 Dec
Delta Logo
7:27 a.m. - 1:37 p.m.SEA  Seattle/Tacoma Intl-ORD Chicago O'Hare Intl
4h 10mdirect
Delta Logo
2:25 p.m. - 10:02 p.m.ORD  Chicago O'Hare Intl-SEA Seattle/Tacoma Intl
9h 37m1 stop Los Angeles
C$ 373Delta
Thu, 26 Nov - Thu, 3 Dec
Delta Logo
5:55 p.m. - 11:59 p.m.SEA  Seattle/Tacoma Intl-ORD Chicago O'Hare Intl
4h 04mdirect
Delta Logo
7:45 a.m. - 3:11 p.m.ORD  Chicago O'Hare Intl-SEA Seattle/Tacoma Intl
9h 26m1 stop Los Angeles
C$ 373Delta
Tue, 1 Dec - Tue, 8 Dec
Delta Logo
5:50 p.m. - 11:57 p.m.SEA  Seattle/Tacoma Intl-ORD Chicago O'Hare Intl
4h 07mdirect
Delta Logo
6:20 a.m. - 10:45 a.m.ORD  Chicago O'Hare Intl-SEA Seattle/Tacoma Intl
6h 25m1 stop Minneapolis St Paul
C$ 373Delta
Wed, 9 Dec - Wed, 9 Dec
Delta Logo
6:00 a.m. - 2:53 p.m.SEA  Seattle/Tacoma Intl-ORD Chicago O'Hare Intl
6h 53m1 stop Minneapolis St Paul
Delta Logo
7:18 p.m. - 12:05 a.m.ORD  Chicago O'Hare Intl-SEA Seattle/Tacoma Intl
6h 47m1 stop Salt Lake City
C$ 373Delta
Fri, 27 Nov - Thu, 3 Dec
Delta Logo
7:27 a.m. - 1:37 p.m.SEA  Seattle/Tacoma Intl-ORD Chicago O'Hare Intl
4h 10mdirect
Delta Logo
2:41 p.m. - 10:03 p.m.ORD  Chicago O'Hare Intl-SEA Seattle/Tacoma Intl
9h 22m1 stop Detroit Metropolitan Wayne County
C$ 373Delta
Sat, 12 Dec - Mon, 21 Dec
Delta Logo
11:15 p.m. - 7:59 a.m.SEA  Seattle/Tacoma Intl-ORD Chicago O'Hare Intl
6h 44m1 stop Detroit Metropolitan Wayne County
Delta Logo
6:00 a.m. - 8:54 a.m.ORD  Chicago O'Hare Intl-SEA Seattle/Tacoma Intl
4h 54mdirect
C$ 373Delta
Tue, 8 Dec - Sat, 12 Dec
Alaska Airlines Logo
9:12 a.m. - 7:00 p.m.SEA  Seattle/Tacoma Intl-ORD Chicago O'Hare Intl
7h 48m1 stop San Diego
Alaska Airlines Logo
6:00 a.m. - 8:57 a.m.ORD  Chicago O'Hare Intl-SEA Seattle/Tacoma Intl
4h 57mdirect
C$ 387Alaska Airlines
Wed, 30 Dec - Fri, 1 Jan
Alaska Airlines Logo
11:39 p.m. - 5:40 a.m.SEA  Seattle/Tacoma Intl-ORD Chicago O'Hare Intl
4h 01mdirect
Alaska Airlines Logo
6:00 a.m. - 9:00 a.m.ORD  Chicago O'Hare Intl-SEA Seattle/Tacoma Intl
5h 00mdirect
C$ 387Alaska Airlines
Booking Insights

Price, demand, and travel trends for Seattle to Chicago O'Hare Intl Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Seattle to Chicago O'Hare Intl Airport?

Round-trip flights from Seattle to Chicago O'Hare Intl Airport typically range from C$ 429 to C$ 652. The lowest price found in the past 5 days was C$ 373, on Delta.

What's the cheapest day of the week to fly from Seattle to Chicago O'Hare Intl Airport?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Seattle to Chicago O'Hare Intl Airport. It's 5% cheaper than the average day, while Sunday is the most expensive, with prices 8% higher.

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

•February is the cheapest month to fly from Seattle to Chicago O'Hare Intl Airport at C$ 343 round-trip.
•August (C$ 566) and June (C$ 566) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 65% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Seattle to Chicago O'Hare Intl Airport the cheapest?

Flights from Seattle to Chicago O'Hare Intl Airport are cheapest 9 weeks before departure. Booking in this window typically costs about 34% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Seattle to Chicago

 
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.

Key details for Seattle to Chicago O'Hare Intl Airport flights

Low season

February

Cheapest flight

C$ 222
Beat the crowds with an average 38% drop in traveller numbers.
The most popular month to fly with an average 33% increase in traveller numbers.
One-way flight from Seattle to Chicago O'Hare Intl Airport

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

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 Airlines-Aug 2026
Be prepared to have a very difficult time checking in if you are not technology savvy. I could not figure out how to check in. It made me scan with my phone to check in, but I couldn’t figure out how to do it and then an employer was there pushed buttons on the kiosk and printed up a boarding pass. Where did customer service go?! and then, we had to wait in a huge long long long line just to drop off the bag. Be certain you give yourself extra time for all of this chaos. Flying is getting worse and worse every time I fly.
Verified travelerFlew with United Airlines-Jul 2024
Budget if you’re planning on shopping for meals or souvenirs at Sea-Tac, it’s not cheap.

Your Seattle to Chicago O'Hare Intl Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • What are the earliest and latest flights from Seattle to Chicago O'Hare Intl Airport?

    These are the earliest and latest flight times available from Seattle to Chicago O'Hare Intl Airport:

    • Earliest: departs at 6:06 am and lands at 10:17 am
    • Latest: departs at 11:59 pm and lands at 4:10 am.

    The flight takes about 4h 11m.

  • Which cabin classes can I book on flights from Seattle to Chicago O'Hare Intl Airport?

    Only Economy Class is available on flights from Seattle to Chicago O'Hare Intl Airport.

  • How long does a flight from Seattle to Chicago O'Hare Intl Airport take?

    A direct flight from Seattle to Chicago O'Hare Intl Airport takes 4h 11m, covering 4,442 km.

  • Do I need a passport to fly from Seattle to Chicago O'Hare Intl Airport?

    No, a passport is not required for this domestic route, but you will need another form of identification, such as a driver's licence.

  • How much should I expect to pay for a Seattle to Chicago O'Hare Intl Airport flight?

    Round-trip flights from Seattle to Chicago O'Hare Intl Airport range from C$ 429 to C$ 652, with an average of C$ 531 over the past 12 months. Anything below C$ 429 counts as a good deal.

  • How expensive are last-minute Seattle to Chicago O'Hare Intl Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 34% above the C$ 531 route average. Book 9 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Seattle to Chicago O'Hare Intl Airport?

    On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 336 round-trip via Los Angeles (LAX), compared to C$ 532 for direct.

  • What is the standard checked bag allowance on flights from Seattle to Chicago O'Hare Intl Airport?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 49–C$ 140 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Seattle to Chicago O'Hare Intl Airport?

    The Boeing 737-800 family is used most often on this route, operated mainly by United Airlines and American Airlines. Other aircraft seen on the route include Boeing 737-900 variants.

  • How are flight departures from Seattle to Chicago O'Hare Intl Airport spread across the day?

    Morning is the busiest departure period on Seattle to Chicago O'Hare Intl Airport flights, with 58% leaving in that window. Afternoon departures account for 14%, Evening flights for 14%, and Night flights for 14%.

  • Have flight prices from Seattle to Chicago O'Hare Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 373 to C$ 1,525. That means the highest observed fare was about 4x higher than the lowest one.

  • Which airlines offer Wi-Fi on Seattle to Chicago O'Hare Intl Airport flights?

    Four airlines offer in-flight Wi-Fi on Seattle to Chicago O'Hare Intl Airport flights:

    • American Airlines
    • Alaska Airlines
    • Delta
    • JetBlue

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

  • How are flight prices from Seattle to Chicago O'Hare Intl Airport looking right now?

    One-way fares from Seattle to Chicago O'Hare Intl Airport are currently lower than usual. Average one-way flight prices are about C$ 241, which is 26% below the typical average for this route.

  • What car rental options are available at Chicago O'Hare Intl Airport (ORD)?

    Chicago O'Hare Intl Airport (ORD) hosts 5 major car rental companies, with daily rates averaging C$ 89 for economy cars. Top options include:

    • Routes Car & Truck Rentals
    • Europcar
    • Hertz
    • Ace
    • Dollar

  • Which airports can I use when flying from Seattle to Chicago O'Hare Intl Airport?

    Flights from Seattle to Chicago O'Hare Intl Airport usually depart from Seattle/Tacoma Intl (SEA) and arrive at Chicago O'Hare Intl (ORD).

  • Which airports do connecting flights from Seattle to Chicago O'Hare Intl Airport pass through?

    One-stop flights from Seattle to Chicago O'Hare Intl Airport most commonly connect through:

    • Denver Intl (DEN) – 56% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) – 17% of one-stop connections
    • Minneapolis St Paul (MSP) – 14% of one-stop connections
    • Los Angeles (LAX) – 8% of one-stop connections

  • Can I save money by using flexible dates for flights from Seattle to Chicago O'Hare Intl Airport?

    Yes. Flexible dates can save you up to 13% on flights from Seattle to Chicago O'Hare Intl Airport. Wednesday is the cheapest departure day at C$ 505 round-trip on average, while Sunday is the most expensive at C$ 578, a difference of C$ 73.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • Which airlines fly from Seattle to Chicago O'Hare Intl Airport?

    4 airlines operate flights between Seattle and Chicago O'Hare Intl Airport. The airlines offering direct flights on this route include:

    • American Airlines
    • Alaska Airlines
    • United Airlines
    • Delta

  • How much time can I save by choosing a different layover airport when travelling from Seattle to Chicago O'Hare Intl Airport?

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 7h 32m, compared with 9h 05m via Minneapolis St Paul (MSP) and 11h 48m via Denver Intl (DEN).

  • What is the time difference between Seattle and Chicago O'Hare Intl Airport?

    Chicago O'Hare Intl Airport is 2 hours ahead of Seattle (Central Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which popular places can I visit in Chicago O'Hare Intl Airport?

    Some of the most popular sights in Chicago O'Hare Intl Airport are Magnificent Mile, River North, and Grant Park. These are among the most viewed places in Chicago O'Hare Intl Airport on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Seattle to Chicago O'Hare Intl Airport flights?

    Among airlines operating Seattle to Chicago O'Hare Intl Airport flights:

    • American Airlines: offers extra legroom; offers free seat selection
    • Alaska Airlines: offers extra legroom; offers free seat selection
    • Delta: offers extra legroom; offers free seat selection
    • United Airlines: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Seattle to Chicago O'Hare Intl Airport flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • American Airlines: a carry-on bag and a checked bag in Economy Class
    • Alaska Airlines: a carry-on bag and a checked bag in Economy Class
    • Delta: a carry-on bag and a checked bag in Economy Class

    Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

  • 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.

Your guide to booking Seattle to Chicago O'Hare Intl Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Sunday. On this route, Wednesday flights average C$ 505, about C$ 73 less than Sunday fares (13% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 9 weeks before you fly. On this route, that window historically saves about 34% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Chicago O'Hare Intl Airport trip for February. Fares historically average C$ 343 round-trip in that month – typically C$ 224 less than the most expensive month, which is June (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Los Angeles Airport (LAX) can be cheaper than flying direct. The cheapest layover option averages C$ 336 round-trip on this route – about C$ 196 less than direct flights (based on the last 12 months).
  • 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?

 
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

More options for your flight from Seattle to Chicago

Complete your trip to Chicago with a hotel stay or car rental