$142 Find Cheap Flights from Chicago to Seattle - Compare and Save

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

• Earliest: departs at 6:00 am and lands at 10:49 am
• Latest: departs at 10:55 pm and lands at 3:44 am.

The flight takes about 4h 49m.

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

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

A nonstop flight from Chicago to Seattle takes 4h 49m, 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 Chicago to Seattle range from $291 to $452, with an average of $370 over the past 12 months. Anything below $291 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 32% above the $370 route average. Book 5 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $254 round-trip via Denver Intl (DEN), compared to $371 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 Chicago to Seattle flights, with 44% of flights leaving in that window. Afternoon departures account for 25%, evening flights for 25%, and night flights for 6%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $273 to $1,031. That means the highest observed fare was about 4x higher than the lowest one.

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

• Alaska Airlines
• American Airlines
• Delta

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 Chicago to Seattle are currently lower than usual. Average one-way flight prices are about $154, which is 32% below the typical average for this route.

Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:

• Fox
• Europcar
• Thrifty
• Budget
• Hertz

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

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

• Denver Intl (DEN) - 42% of one-stop connections
• Chicago O'Hare Intl (ORD) - 30% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 14% of one-stop connections
• Los Angeles (LAX) - 7% of one-stop connections

Yes. Flexible dates can save you up to 11% on flights from Chicago to Seattle. Wednesday is the cheapest departure day at $357 round-trip on average, while Sunday is the most expensive at $398, a difference of $41.

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

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

Flying via Portland (PDX) gives the shortest average 1-stop total travel time at 6h 43m, compared with 7h 33m via Chicago O'Hare Intl (ORD) and 8h 28m via Detroit Metropolitan Wayne County (DTW).

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

Some of the most popular sights in Seattle are Pike Place Market, Lumen Field and Space Needle. These are among the most viewed places in Seattle on KAYAK.

Among airlines operating Chicago to Seattle flights:

• Alaska Airlines: offers extra legroom; offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection
• American 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
• United Airlines: a cabin bag and a checked bag in Economy Class
• American 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.

Link Light Rail provides service from Seattle-Tacoma International Airport (SEA) to Seattle city center. It is a fast and affordable way to make the trip. Tickets are available at the airport's Link Light Rail Station on the parking garage's fourth floor.

Yes, O'Hare Airport is child-friendly. It has children's play areas and restaurants at the airport also offer kids' meals.

Yes, O'Hare International Airport (ORD) offers support for travelers with special needs. Accessibility information and resources are available for travelers with reduced mobility or other disabilities. Travelers who need accessibility services should contact their airline, as wheelchair assistance and other ADA-related accommodations must be arranged directly through the airline. ORD also has accessible public telephones, parking and restrooms.

Yes, Chicago O'Hare International Airport (ORD) has pet relief areas outside the terminal buildings. These areas provide waste disposal bags and surfaces made of real grass, gravel or wood chips. Pet cargo may also be available through airlines serving ORD. One option is American Airlines Cargo's PetEmbark service for pets that do not qualify to travel as carry-on or checked pets.

Yes, ORD has several lounges for travelers before or after a flight. United Club has lounges in Concourses B, C, E and F and entry requires a valid United Club one-time pass, subject to availability. Swissport Lounge is airside in Terminal 5 at Gate M18. American Airlines also has lounges in Concourses G, H and L at O'Hare International Airport.