SEA - ORD

Find Cheap Flights from Seattle to Chicago

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
Expert advice
Booking Insights
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 return 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 return flight deals from Seattle to Chicago

Multiple Airlines Logo
SEA-ORD
1715 mimulti-stop
Multiple Airlines Logo
ORD-SEA
1715 mimulti-stop
Multiple Airlines
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by travel experts
American's Main Cabin Extra offers early boarding.
Use SEA Spot Saver for faster security at Seattle.
Expert advice
Expert advice
Expert advice
Expert advice
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 return fare
Multiple Airlines
Thu 11/9
SEA - ORD • multi-stop
Cheapest one-way flight
Multiple Airlines
Thu 11/9
SEA - ORD • multi-stop
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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

Main Cabin Extra offers early boarding and complimentary alcoholic drinks for a small fee.


AA's Flagship Lounges in Chicago offer upgraded seating and meals for qualifying passengers.

Read more about American Airlinesby Harriet Baskas
Lufthansa

Economy Light offers savings for overnight business trips without checked luggage.


Business Class includes priority check-in and boarding, plus two checked bags up to 23 kg each.

Read more about Lufthansaby Jessica Macdonald
British Airways

BA's Euro Traveller fares include a cabin bag, avoiding surprise fees unlike budget carriers.


BA's CityFlyer offers fast travel with no 100 ml liquid limit for cabin baggage.

Read more about British Airwaysby Duncan Madden
Airports
SEA

Use the SEA Spot Saver for expedited security screening, available daily from 04:00 to 22:00 at Checkpoints 2, 3, and 5.

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 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, 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
Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Jessica Macdonald

Jessica Macdonald

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has travelled to more than 50 countries across six continents.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on 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 out at 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.

When flying from Seattle to Chicago, you should consider leaving on a Friday and avoid Mondays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Thursdays and the most expensive ones on Saturdays.

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 £184 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £290 and £246 respectively.

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 - Cheap tickets from Seattle to Chicago

Low seasonJanuary
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly and prices are also 15% lower on average.

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 return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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

  • 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 return 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 from Chicago to Seattle? 25% of our users found flights on this route for £99 or less one-way.

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 direct 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 direct flights

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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