$59 Cheap Flights from Seattle (SEA) to Chicago (ORD)

View $59 flight on Wed, Oct 29, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Chicago O'Hare Intl. Airport (ORD)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Today's featured flight deals from Seattle-Tacoma International Airport (SEA) to Chicago O'Hare Intl. Airport (ORD)

Nonstop
Carry-on included
Lower price than typical

Cheap Flights from Seattle to Chicago (SEA-ORD)

Prices were available within the past 7 days and start at $59 for one-way flights and $118 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Oct 25 - Sat, Nov 1
SEA
Seattle
ORD
Chicago
$118 Roundtrip, just found
$118
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Oct 25 from Seattle to Chicago, returning Sat, Nov 1, priced at $118 just found
Frontier Airlines
Wed, Oct 29 - Fri, Oct 31
SEA
Seattle
ORD
Chicago
$148 Roundtrip, just found
$148
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Oct 29 from Seattle to Chicago, returning Fri, Oct 31, priced at $148 just found
Frontier Airlines
Tue, Nov 11 - Tue, Nov 18
SEA
Seattle
ORD
Chicago
$148 Roundtrip, just found
$148
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Nov 11 from Seattle to Chicago, returning Tue, Nov 18, priced at $148 just found
Frontier Airlines
Sun, Oct 26 - Sat, Nov 1
SEA
Seattle
ORD
Chicago
$150 Roundtrip, just found
$150
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, Oct 26 from Seattle to Chicago, returning Sat, Nov 1, priced at $150 just found
Frontier Airlines
Sat, Oct 25 - Sat, Nov 1
SEA
Seattle
ORD
Chicago
$153 Roundtrip, just found
$153
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Oct 25 from Seattle to Chicago, returning Sat, Nov 1, priced at $153 just found
Frontier Airlines
Wed, Oct 29 - Fri, Oct 31
SEA
Seattle
ORD
Chicago
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Oct 29 from Seattle to Chicago, returning Fri, Oct 31, priced at $157 just found
United
Mon, Nov 10 - Thu, Nov 20
SEA
Seattle
ORD
Chicago
$165 Roundtrip, just found
$165
Roundtrip
just found
Select United flight, departing Mon, Nov 10 from Seattle to Chicago, returning Thu, Nov 20, priced at $165 just found
Alaska Airlines
Wed, Oct 29 - Sat, Nov 1
SEA
Seattle
ORD
Chicago
$173 Roundtrip, just found
$173
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Oct 29 from Seattle to Chicago, returning Sat, Nov 1, priced at $173 just found
American Airlines
Wed, Dec 10 - Sun, Dec 14
SEA
Seattle
ORD
Chicago
$177 Roundtrip, just found
$177
Roundtrip
just found
Select American Airlines flight, departing Wed, Dec 10 from Seattle to Chicago, returning Sun, Dec 14, priced at $177 just found
Delta
Wed, Nov 5 - Wed, Nov 12
SEA
Seattle
ORD
Chicago
$180 Roundtrip, just found
$180
Roundtrip
just found
Select Delta flight, departing Wed, Nov 5 from Seattle to Chicago, returning Wed, Nov 12, priced at $180 just found

Find the cheapest month to fly from Seattle (SEA) to Chicago (ORD)

November is typically the cheapest month to fly

From $96 - $291 per traveler.

Alternative airports near Chicago

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Midway Intl. MDW. Closest option available. Average driving time to city center is 16 minutes. Flights from $297
MDW
Midway Intl.
Closest
Average driving time to city center16 min
Flights from $297

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD) cost?
Snag a cheap one-way flight from $59 or cheap return flight from $118 from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
The cheapest month to fly from SEA to ORD is October, when there's less demand. Off-peak season is generally when airlines offer better prices between these airports.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
Skip the layovers and fly direct from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD) with 4 carriers, including:

  • United Airlines
  • Alaska Airlines
  • Delta Air Lines

What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
American Airlines and Delta Air Lines are some popular airlines offering reasonable fares. Keep in mind that flight prices from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD) can change based on departure dates, demand and how early you book. With Expedia's filter tool, you can easily find a SEA to ORD flight that works with your plans and budget.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
Each day, an average of 8 direct flights take off from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD). Choose the departure time that best suits your travel plans.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
More passengers fly between SEA and ORD at 6 PM than at any other point in the day. Rather go when it's quieter? Consider flying outside peak hours and you could save on your ticket as well.
What day of the week has the most flights from SEA to ORD?
If you jet off on a Friday, you'll get the biggest range of choices for flights from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD).
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
Hop on the earliest flight at around 7:00AM UTC-8, heading out of Seattle - Tacoma Intl. Airport (SEA). You'll be in the air for about 4h 6m, coming in to land at O'Hare Intl. Airport (ORD) at approximately 1:06PM UTC-6.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
The average flight time from SEA to ORD is 4 hours and 4 minutes, covering a distance of 1,700 mi.
What airline has the least delays from SEA to ORD?
American Airlines has the strongest track record for on-time direct flights from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD), with an on-time rating of 88%. Use the Expedia App to see your flight schedule before you go and get real-time alerts about any trip changes.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
Opt for a flight from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Chicago from Seattle - Tacoma Intl. Airport (SEA)?
If you're traveling on a direct flight from Seattle - Tacoma Intl. Airport (SEA) to Chicago, you'll come into land at either O'Hare Intl. Airport (ORD) or Midway Intl. Airport (MDW).
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD) last-minute?
Holding off until just before your departure to book your flight from SEA to ORD often results in higher prices. While you may find some last-minute discounts, they're not always guaranteed. Keep your travel schedule open to maximize your chances of snagging a bargain.
Is it cheaper to book a SEA to ORD flight and hotel package?
Booking a SEA to ORD flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our extensive range of stays and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
You can usually reschedule or cancel your SEA to ORD flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
O'Hare Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$118
Distance
1715 mi
Average flight time
6 hours 3 mins

Book with confidence

Book with confidence

Seattle to Chicago Flights

The cheapest times to fly from Seattle to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Chicago are during the month of October. You can find some of the cheapest flights from Seattle to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Chicago

Sunday is one of the best days to book for cheap flights from Seattle to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from $59 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Chicago Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.