$125 Cheap Flights from Seattle (SEA) to Chicago (ORD)

View $125 flight on Thu, Oct 15, 2026Opens in a new window

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

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Cheap Flights from Seattle to Chicago (SEA-ORD)

Prices were available within the past 7 days and start at $125 for one-way flights and $250 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Jul 25 - Mon, Aug 10
SEA
Seattle
ORD
Chicago
$250 Roundtrip, found 1 hour ago
$250
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Jul 25 from Seattle to Chicago, returning Mon, Aug 10, priced at $250 found 1 hour ago
Frontier Airlines
Tue, Aug 11 - Wed, Aug 19
SEA
Seattle
ORD
Chicago
$255 Roundtrip, found 1 day ago
$255
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Aug 11 from Seattle to Chicago, returning Wed, Aug 19, priced at $255 found 1 day ago
Bargain Flight
Tue, Sep 15 - Wed, Sep 23
SEA
Seattle
ORD
Chicago
$255 Roundtrip, found 6 days ago
$255
Roundtrip
found 6 days ago
Select Bargain Flight flight, departing Tue, Sep 15 from Seattle to Chicago, returning Wed, Sep 23, priced at $255 found 6 days ago
Delta
Fri, Nov 6 - Fri, Nov 6
SEA
Seattle
ORD
Chicago
$258 Roundtrip, found 5 days ago
$258
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Nov 6 from Seattle to Chicago, returning Fri, Nov 6, priced at $258 found 5 days ago
Frontier Airlines
Tue, Aug 11 - Wed, Aug 19
SEA
Seattle
ORD
Chicago
$260 Roundtrip, found 1 day ago
$260
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Aug 11 from Seattle to Chicago, returning Wed, Aug 19, priced at $260 found 1 day ago
Frontier Airlines
Sat, Jul 11 - Tue, Jul 14
SEA
Seattle
ORD
Chicago
$260 Roundtrip, found 3 hours ago
$260
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, Jul 11 from Seattle to Chicago, returning Tue, Jul 14, priced at $260 found 3 hours ago
Frontier Airlines
Mon, Sep 14 - Tue, Sep 22
SEA
Seattle
ORD
Chicago
$270 Roundtrip, found 2 days ago
$270
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Sep 14 from Seattle to Chicago, returning Tue, Sep 22, priced at $270 found 2 days ago
Alaska Airlines
Wed, Sep 2 - Thu, Sep 10
SEA
Seattle
ORD
Chicago
$270 Roundtrip, found 1 day ago
$270
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 2 from Seattle to Chicago, returning Thu, Sep 10, priced at $270 found 1 day ago
American Airlines
Wed, Aug 26 - Mon, Aug 31
SEA
Seattle
ORD
Chicago
$276 Roundtrip, just found
$276
Roundtrip
just found
Select American Airlines flight, departing Wed, Aug 26 from Seattle to Chicago, returning Mon, Aug 31, priced at $276 just found
Frontier Airlines
Thu, Oct 15 - Mon, Oct 19
SEA
Seattle
ORD
Chicago
$278 Roundtrip, just found
$278
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 15 from Seattle to Chicago, returning Mon, Oct 19, priced at $278 just found

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 $483
MDW
Midway Intl.
Closest
Average driving time to city center16 min
Flights from $483

What you need to know for your flight from Seattle - Tacoma Intl. to O'Hare Intl.

Seattle (SEA) to Chicago (ORD) at a glance

Travel between Seattle (SEA) and Chicago (ORD) with a selection of airlines catering to this domestic short-haul route. You can explore various options, whether you prefer full-service or low-cost carriers, to find the most suitable itinerary for your budget and travel plans. Discover key information about flights from Seattle-Tacoma International Airport to O'Hare International Airport as you prepare to experience the iconic sights and neighborhoods of Chicago.

  • Fastest flight duration: around 4 hours non-stop
  • Route distance: roughly 1,700 miles (2,740 km)
  • Flights per week: around 90+ flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $85–$350, depending on seasonality and how far ahead you book

Flights from Seattle - Tacoma International Airport (SEA) to O'Hare International Airport (ORD)

Based on the latest traveler bookings, here are the top airlines flying from Seattle to Chicago, often selected for their non-stop and one-stop options. Common layovers include Denver International Airport (DEN) with around a 2-hour stop, Harry Reid International Airport (LAS) at approximately 1 hour and 15 minutes, and Portland International Airport (PDX) with about a 1 hour and 30-minute layover. This variety allows you to customize your journey by balancing price, total travel time, and cabin class to discover the ideal itinerary.

  • Alaska Airlines: This full-service airline provides both non-stop and one-stop options, with one-way fares generally falling between $85 and $380. It represents around 32% of departures on this route, boasting a standard non-stop flight duration of 4 hours.
  • United: As a full-service airline, United offers non-stop and one-stop flights, with one-way prices typically ranging from $85 to $385. It accounts for roughly 24% of the departures along this route, with a usual non-stop travel time of 4 hours.
  • American Airlines: A full-service airline featuring non-stop and one-stop services, American Airlines has one-way fares that usually range from $85 to $375. It makes up about 23% of departures for this route, with a typical non-stop journey time of 4 hours.
  • Delta: This full-service carrier provides non-stop and one-stop services, with one-way fares that typically range from $85 to $370. Delta comprises approximately 19% of departures on this route, with a standard non-stop flight duration of 4 hours.
  • Hawaiian Airlines: Operating as a full-service airline, Hawaiian Airlines exclusively offers non-stop flights, with one-way fares generally ranging from $85 to $400. It represents around 1% of departures on this route, with a total travel time of 4 hours.

Travelers flying from Seattle to Chicago have the option to enhance their experience with upgrades. Delta provides first class and premium economy; American Airlines features first class; and Alaska Airlines offers both first class and business class service.

Best time to fly from Seattle (SEA) to Chicago (ORD)

The most popular months for travelers flying from Seattle to Chicago are March, April, and July, when peak temperatures in Chicago reach up to 73.4°F in July. If you prefer quieter travel, consider February, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 27°F. For better deals, May usually offers the lowest average one-way fare around $163. Flight availability peaks in July, with approximately 138 flights per week, making it easier to find convenient departure times.

  • Cheapest time to fly: May usually offers good deals with average one-way fare around $163, roughly 13% cheaper than the yearly average.
  • More budget-friendly months to fly: September and January typically offer average one-way fares of around $175.
  • Most flight options: July has the highest number of flights from Seattle to Chicago, with approximately 138 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January25.7°F (-3.5°C)Average63$176
February27.0°F (-2.8°C)Slightly Low59$182
March37.0°F (2.8°C)Slightly High74$190
April46.0°F (7.8°C)Slightly High89$185
May57.0°F (13.9°C)Average107$163
June67.3°F (19.6°C)Average123$197
July73.4°F (23.0°C)Slightly High138$195
August73.0°F (22.8°C)Average135$194
September67.1°F (19.5°C)Average106$174
October54.9°F (12.7°C)Average102$191
November42.3°F (5.7°C)Slightly Low85$205
December33.1°F (0.6°C)Slightly Low82$207

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Seattle (SEA) to Chicago (ORD)

  • Seattle to Chicago (SEA-MDW): Midway International Airport (MDW) is located roughly 16 miles from O'Hare International Airport (ORD). One-way economy tickets for this journey generally vary from $70 to $380, influenced by the season and how far in advance you book. Travelers can choose from both non-stop and one-stop flight options. Notable airlines operating on this route include low-cost carrier Southwest Airlines and Delta.

How to find the best prices for flights from Seattle (SEA) to Chicago (ORD)

Getting some of the best deals on flights from Seattle to Chicago is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking at least two months in advance, although most travelers tend to book two to eight weeks ahead. Afternoon departures from 12 PM to 6 PM often offer lower prices, while morning flights from 5 AM to 12 PM are more popular. Additionally, flying on Wednesday typically results in cheaper tickets, despite Thursday being the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at O'Hare International Airport from Seattle - Tacoma International Airport

Chicago welcomes travelers from Seattle with a range of transport options based on price, convenience, and proximity. For departures, Seattle - Tacoma International Airport is roughly a 20-minute drive (covering about 14 miles) from central Seattle. Here's how to reach Chicago efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Chicago, with private rides that can be arranged in advance.
  • Car rental: Renting a car from O'Hare International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at O'Hare International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From O'Hare International Airport, O'Hare Station, a metro station, is located about 0.1 miles away on foot, while Rosemont Station, a train station, is situated approximately 2.2 miles away by car.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.) cost?
You can find cheap one-way flights from $125 and cheap return flights from $250 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.) with Expedia. One-way flights generally range between $130 and $1285, and roundtrip flights usually range from $201 to $1744. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
January is the cheapest month to fly from Seattle, WA (SEA) to Chicago, IL (ORD), with average return fares around $256. This fare is about 18% lower than the average price for the year, as January usually has lower travel demand following the holiday season. Other affordable months to fly from SEA to ORD include February and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
4 airlines operate nonstop service from SEA to ORD:

  • United operates around 49 direct flights from SEA to ORD every week
  • American Airlines operates around 31 direct flights from SEA to ORD every week
  • Delta operates around 19 direct flights from SEA to ORD every week
  • Hawaiian Airlines operates around 25 direct flights from SEA to ORD every week

How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
The best airline to fly with from Seattle, WA (SEA) to Chicago, IL (ORD) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, American Airlines typically offers the lowest fares. United offers the most daily flights from SEA to ORD, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
The best time to fly from Seattle to Chicago is typically in January or September. During these months, you can find return flights at around $256, making it a budget-friendly option. January is quieter after the holiday rush, while September offers pleasant weather and fewer crowds, giving you a great travel experience.*Prices based on flights available on Expedia in the last year.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
There are approximately 14 nonstop flights per day from Seattle - Tacoma Intl. (SEA) to O'Hare Intl. (ORD). For more options, look at flights that include layovers.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
The earliest flight from Seattle - Tacoma International Airport (SEA) to O'Hare International Airport (ORD) generally departs at around 12:05 AM, operated by American Airlines. This flight is part of a seasonal service active in February and March, helping you get an early start on your trip to Chicago. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
The most popular departure times for flights from Seattle (SEA) to Chicago (ORD) are in the early morning, from 6am to 9am. About 25% of passengers prefer this time window. Many major carriers, including United, Delta, and Alaska Airlines, operate flights during this period. This timing is popular because it allows you to start your day early and make the most of your time in Chicago.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
Direct flights from SEA to ORD usually take about 4 hours 20 minutes, traveling roughly 1,716 miles. If you opt for a connecting flight, expect to add around 4 hours 10 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
Business class seats are offered on the SEA to ORD route with American Airlines.First class cabins are available on:

  • American Airlines
  • United Airlines
  • Delta Air Lines
  • Hawaiian Airlines

How much is a business class flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
A direct, return business class ticket from Seattle (SEA) to Chicago (ORD) typically costs between $1,178 - $1,956. A non-stop, one-way business class flight is usually around $500 - $880. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Chicago from Seattle - Tacoma Intl. (SEA)?
From Seattle - Tacoma Intl. (SEA), you can fly into Midway Intl. (MDW) and O'Hare Intl. (ORD) in Chicago. Some flights may connect through major hubs like Denver Intl. (DEN), Sacramento Intl. (SMF), Harry Reid Intl. (LAS) before reaching Chicago. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.) Chicago Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Chicago, IL (ORD-O'Hare Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
O'Hare Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Sun Country Airlines, United
Roundtrip price
$250
Distance
1715 mi
Average flight time
6 hours 6 mins

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 July. 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 2026. You can also book with separate airlines for your outbound and return journeys, from $125 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

*Flight schedules are subject to change.

*Available to One Key members.

 

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