$159 Find Cheap Flights from Seattle to Chicago - Compare and Save

These are the earliest and latest flight times available from Seattle to Chicago:

• Earliest: departs at 12:10 am and lands at 4:19 am
• Latest: departs at 11:59 pm and lands at 4:08 am.

The flight takes about 4h 09m.

Three cabin classes are available on flights from Seattle to Chicago:

• Economy Class
• Business Class
• First Class

A nonstop flight from Seattle to Chicago takes 4h 09m, covering 1,731 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Seattle to Chicago range from $299 to $462, with an average of $375 over the past 12 months. Anything below $299 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 36% above the $375 route average. Book 9 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $240 round-trip via Los Angeles (LAX), compared to $375 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

Morning is the busiest departure period on Seattle to Chicago flights, with 53% of flights leaving in that window. Evening departures account for 18%, night flights for 17%, and afternoon flights for 12%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $279 to $1,141. That means the highest observed fare was about 4x higher than the lowest one.

Four airlines offer in-flight Wi-Fi on Seattle to Chicago flights:

• Alaska Airlines
• American 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.

One-way fares from Seattle to Chicago are currently lower than usual. Average one-way flight prices are about $164, which is 29% below the typical average for this route.

Since Chicago is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
Near Chicago O'Hare Intl Airport (ORD) — daily rates from around $17:

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

Near Chicago Midway Airport (MDW) — daily rates from around $32:

• Hertz
• Dollar
• Budget
• Alamo
• Rent-A-Wreck

Near Chicago Greater Rockford Airport (RFD) — daily rates from around $28:

• Alamo
• Enterprise Rent-A-Car
• Budget
• Avis
• National

Flights from Seattle to Chicago usually depart from Seattle/Tacoma Intl (SEA) and may arrive at several airports in Chicago area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD).

One-stop flights from Seattle to Chicago most commonly connect through:

• Denver Intl (DEN) - 49% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 14% of one-stop connections
• Minneapolis St Paul (MSP) - 14% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 7% of one-stop connections

Yes. Flexible dates can save you up to 13% on flights from Seattle to Chicago. Tuesday is the cheapest departure day at $354 round-trip on average, while Sunday is the most expensive at $405, a difference of $51.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

5 airlines operate flights between Seattle and Chicago. The airlines offering nonstop flights on this route include:

• American Airlines
• Alaska Airlines
• United Airlines
• Delta
• Southwest

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 7h 18m, compared with 7h 29m via Chicago O'Hare Intl (ORD) and 7h 32m via Dallas/Fort Worth (DFW).

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

Some of the most popular sights in Chicago are Magnificent Mile, Grant Park and Soldier Field. These are among the most viewed places in Chicago on KAYAK.

Among airlines operating Seattle to Chicago flights:

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

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

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

• Alaska Airlines: a cabin bag and a checked bag in Economy Class
• American Airlines: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag and a checked bag in Economy Class

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

Chicago O'Hare International Airport (ORD) provides access to several nearby cities. Options include Chicago, Des Plaines, Park Ridge, Franklin Park, Elmwood Park, River Grove, Schiller Park, Norridge, Harwood Heights and Rosemont. All can be reached using the airport's transit options.

Travelers can take the Chicago Transit Authority (CTA) Blue Line, use hotel and off-airport parking shuttles or take a taxi from ORD to downtown Chicago. The Blue Line can be reached from Terminals 1, 2 and 3 by following the "Trains to City" signs. It is a short distance from the baggage claim area. Hotel and off-airport parking shuttles pick up at the Terminal 2 Arrivals curbside and some may continue to pick up at Terminal 5. Taxi stands are located outside the terminals.

Yes. Rental desks at MDW are in the Midway Rental Car Facility, which houses all rental companies in one location. The facility is near the airport and can be reached by shuttle bus from Lower Level Door #2.

The Chicago Transit Authority (CTA) operates rapid transit trains on the Orange Line and buses to various parts of the city. Midway Station is near the airport and connected by an enclosed walkway.

Chicago O'Hare International Airport (ORD) has several nursing rooms and pods for nursing mothers. They are in Terminal 1, Concourses B and C; Terminal 2, Concourses E and F; Terminal 3, Concourses G, K and L; Terminal 5; and the Multi-Modal Facility. Mamava lactation pods are also located throughout ORD, including in Terminals 1, 2 and 3.

Seattle-Tacoma International Airport (SEA) has pet relief areas for travelers with pets or service animals. These relief areas are located both inside and outside the terminal and include five pet relief areas in the secured section of the terminal, located in Concourses A, C, D, S and N. Additionally, there are four outdoor pet relief areas outside the Main Terminal, including one outside Door 26 and one at the south end of the airport near doors 00/02 on the baggage claim level past Carousel 1.

SEA offers several amenities for business travelers. Wi-Fi access is available in on-site airport lounges, including The Club at SEA locations in Concourse A near Gate A12 and in the S Concourse above Gate S10. Charging stations, printing and fax services are available at the USO Center, which serves military travelers and their families. Private workstations are available in separate Jabbrrbox units throughout the terminal and meeting rooms and conference facilities are located at the pre-security Conference Center.