Cheap Alaska Airlines flights Seattle (SEA) to Chicago (ORD)

Set the “Price (lowest to highest)” filter on Expedia to find cheap Alaska Airlines return flights from SEA to ORD. Affordable one-way tickets are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines flights to Chicago tend to be more affordable in the quieter months of January and February. Whether you’re in search of a round-trip or one-way ticket, you could find a better deal then.

To find cheap Alaska Airlines fares from Seattle - Tacoma Intl. Airport (SEA) to O’Hare Intl. Airport (ORD), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect how much you pay. Sunday is typically the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Hop on one of Alaska Airlines’s 20 weekly direct flights from Seattle - Tacoma Intl. Airport (SEA) to O’Hare Intl. Airport (ORD). To view available options, enter your destination, origin and dates and hit search. Then use the “Nonstop” and “Airline” filters.

The journey time for a direct Alaska Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to O’Hare Intl. Airport (ORD) takes around 4h 8m.

Alaska Airlines operates the most flights from Seattle - Tacoma Intl. Airport (SEA) to O’Hare Intl. Airport (ORD) on Monday. With up to 3 daily departures, you’ll get the most flexibility on this day.

Leaving SEA at 7:55AM UTC-8, the earliest Alaska Airlines flight to ORD lands at 2:03PM UTC-6. Traveling early means you’ll be less likely to encounter cancellations or delays.* Don’t like early starts? The last Alaska Airlines flight from SEA to ORD departs at 6:00PM UTC-8 and touches down at 11:59PM UTC-6.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

The majority of Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Chicago arrive at O’Hare Intl. Airport (ORD). This is the airline’s main entry point to the city. It’s also worth browsing Expedia for flights to nearby airports such as Midway Intl. Airport (MDW), as tickets may be cheaper.

Jetting off from SEA to ORD with Alaska Airlines means enjoying a host of perks, such as top-tier customer service and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to use on select future travel purchases. That’s on top of the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Alaska Airlines usually flies Boeing 737-900 planes for flights from Seattle - Tacoma Intl. Airport (SEA) to O’Hare Intl. Airport (ORD). This airline also operates the Boeing 737-800 on this route. Bear in mind that aircraft type can vary depending on operational requirements, so the plane you board might be different when you leave.

Typically, you can change or cancel your flight, although additional charges may apply if your booking was made over 24 hours ago. Want to keep your options open? Use Expedia’s “No cancel fee” or “Changes included” filter to find flights that won’t charge you extra if you need to adjust your plans. To make changes, head to “Trips,” select your flight and click on “Manage Booking” for further information.