CHI - SEA

$176 Find Cheap Flights from Chicago to Seattle - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Seattle departing on 8/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$324
Typical prices: $315-$496
Southwest
Thu 8/6Wed 8/12
MDW - SEA • 1 stop
Cheapest non-stop
$324
Typical prices: $289-$426
American Airlines
Thu 8/6Wed 8/12
ORD - SEA • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
Delta offers free Wi-Fi; United Economy Plus adds up to 6 inches more legroom.
Alaska's baggage guarantee speeds claim; choose a seat early for this 4+ hour flight.
Expert advice
Expert advice
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Expert advice
Expert advice
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Nonstop flights
You can fly direct with Alaska Airlines, American Airlines and others. Average duration is 4h 39m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top routes
Cheapest • 2% average savings
Most popular
Insights
Insights
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Top layover airports
Cheapest • Avg $227 (round-trip)
Shortest trip • 6h 45m (one-way)
Insights
Insights
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Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
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Insights
When to travel
Cheapest • 77% price drop
Most popular
Good to know
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Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Chicago to Seattle (CHI-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to Seattle

Thu, Aug 6 - Wed, Aug 12
Southwest Logo
4:55 pm - 12:40 am
MDW
-
SEA
9h 45m
1 stop
Southwest Logo
4:10 pm - 5:40 am
SEA
-
MDW
11h 30m
1 stop
$324Southwest
Thu, Aug 6 - Wed, Aug 12
American Airlines Logo
6:45 am - 9:29 am
ORD
-
SEA
4h 44mnonstop
American Airlines Logo
3:35 pm - 10:07 pm
SEA
-
ORD
4h 32mnonstop
$324American Airlines
Wed, Jul 15 - Mon, Jul 20
Frontier Logo
9:57 pm - 9:17 am
ORD
-
SEA
13h 20m
1 stop
Frontier Logo
7:06 pm - 8:52 pm
SEA
-
ORD
23h 46m
1 stop
$325Frontier
Tue, Aug 11 - Tue, Aug 18
Southwest Logo
9:00 pm - 11:35 pm
MDW
-
SEA
4h 35mnonstop
Southwest Logo
7:10 am - 7:00 pm
SEA
-
MDW
9h 50m
2 stops
$325Southwest
Sat, Sep 5 - Wed, Sep 9
Delta Logo
12:54 pm - 3:40 pm
ORD
-
SEA
4h 46mnonstop
Delta Logo
7:30 am - 9:33 pm
SEA
-
ORD
12h 03m
2 stops
$326Delta
Tue, Aug 4 - Thu, Aug 20
Delta Logo
12:54 pm - 3:40 pm
ORD
-
SEA
4h 46mnonstop
Delta Logo
9:59 am - 11:48 pm
SEA
-
ORD
11h 49m
1 stop
$327Delta
Thu, Aug 13 - Mon, Aug 24
Frontier Logo
9:57 pm - 9:04 am
ORD
-
SEA
13h 07m
1 stop
Frontier Logo
1:35 pm - 1:36 pm
SEA
-
ORD
22h 01m
1 stop
$328Frontier
Mon, Aug 17 - Sun, Aug 23
Southwest Logo
9:20 pm - 11:55 pm
MDW
-
SEA
4h 35mnonstop
Southwest Logo
5:40 am - 11:35 am
SEA
-
MDW
3h 55mnonstop
$328Southwest
Mon, Aug 24 - Mon, Aug 31
Alaska Airlines Logo
8:17 pm - 9:20 am
ORD
-
SEA
15h 03m
1 stop
Alaska Airlines Logo
7:50 pm - 1:22 pm
SEA
-
ORD
15h 32m
1 stop
$329Alaska Airlines
Sun, Aug 16 - Fri, Aug 21
Multiple Airlines Logo
6:00 am - 8:38 am
ORD
-
SEA
4h 38mnonstop
Multiple Airlines Logo
7:06 pm - 1:36 pm
SEA
-
ORD
16h 30m
1 stop
$330Multiple Airlines
Booking Insights

KAYAK's insights & trends for Chicago to Seattle flights

Get data-powered insights and trends into flights from Chicago to Seattle to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Chicago to Seattle?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Chicago to Seattle departing in August.

What is the cheapest Chicago to Seattle flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Chicago to Seattle costs $263 on the route between Chicago Midway Airport (MDW) and Seattle (SEA). Over the past month, this route was, on average, 2% cheaper than other Chicago-Seattle routes. The most popular route is between Chicago O'Hare Intl Airport (ORD) and Seattle (SEA).

What’s the cheapest day of the week to fly from Chicago to Seattle?

The average price of all round-trip flights from Chicago to Seattle clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Seattle on a Friday and more expensive on a Monday. On your return trip to Chicago, you should consider flying back on a Thursday, and avoid Sundays for better deals.

What is the cheapest month to fly from Chicago to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago to Seattle is January, where tickets cost $88 (return) on average. On the other hand, the most expensive months are February and December, where the average cost of round-trip tickets is $625 and $553 respectively.

Can I save money by flying with a layover from Chicago to Seattle?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $395, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Chicago to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chicago to Seattle, you should book around 3 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Expert advice

Expert advice for your flight from Chicago to Seattle

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, Delta and ORD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Good to know

Low seasonJanuary
Cheapest flight$176
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from Chicago Midway Airport to Seattle

When to book flights from Chicago to Seattle

Are your dates flexible? Find out the best times to travel from Chicago to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Chicago to Seattle: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Chicago to Seattle 
PaulFlew with Alaska Airlines
ORD
-
SEA
Apr 2024
The flight is long, at over four hours. I would try to get a window or aisle seat to be more comfortable. I would check with other airlines that allow you to choose your seat even if you are in the economy section. I would bring your own food on the plane as the service was sometimes sketchy.
Verified travelerFlew with Alaska Airlines
ORD
-
SEA
Apr 2024
If you miss your flight ask any alaska agent to how and where to rebook the flight.

FAQs for booking flights from Chicago to Seattle

  • Is O’Hare airport child-friendly?

    The O'Hare airport is child-friendly since it has children's play areas. There are also kids' meals included in the restaurants. For as low as $3, your child will enjoy a healthy meal at any of the restaurants.

  • Are there hotels nearby Midway airport?

    Some of the nearby hotels include: Sleep Inn Hotel which charges approximately $110 per night and is located approximately 1.2 miles from the airport, LaSalle Lodge which charges approximately $35 per night and is located approximately 8.7 miles from the airport, and Courtyard Hotel which charges approximately $120 and is located approximately 1.2 miles from the airport.

  • Are Seattle airport employees friendly?

    Yes, all the staff working at Seattle airport are not only friendly but also professionally trained. You can approach any staff at the airport in case you experience any difficulties while moving around the airport.

  • Are there duty-free stores at Seattle airport?

    Duty-free stores are available at this airport. You will find them in the international departure area. If you forgot to buy a gift or a certain item, the store sells cosmetics, fragrances, and food at friendly prices.

  • Does ORD have any lounges?

    Yes, ORD is home to several lounges where you can relax before or after your flights. United Club has lounges in Concourses B, C, and F, where passengers can pay at the door provided they have proof of the airline’s ticket. Swissport Lounge is between Gates M8 and M7 airside of Terminal 5, while American Airlines has lounges in Concourses G, H, and L.

  • Does Chicago O’Hare International Airport offer support for travelers with special needs?

    Yes, ORD offers support for passengers with special needs. The airport runs an accessibility service program for passengers with reduced mobility or other disabilities. The program offers electric carts, wheelchairs, and assistance when boarding your flight. Contact your airline if you need these services. Additionally, the airport has several accessible features including public telephones, parking, and restrooms.

  • Are there pet amenities at Chicago O’Hare International Airport?

    Yes, ORD is a pet-friendly facility. The airport has areas where you can take your pets to relieve themselves before your flight to Seattle. The areas are outside the terminal buildings and are equipped with waste disposal bags and artificial turf. The airport also offers pet cargo services for the big pets that can’t travel inside the cabin.

  • What is the easiest way to get to the city center from Seattle-Tacoma International Airport?

    The Link Light Rail offers one of the easiest ways to get to the city center from SEA. Not only is it fast, but it is also an affordable way to complete this trip. You can get your ticket from the airport's Link Light Rail Station on the parking garage's fourth floor. The total trip from the airport to the West Lake Station takes about 30min.

  • What are the common stopover options for Chicago to Seattle flights?

    Most of the airlines flying this route offer direct flights. However, flights with stops en route are also available. The stopover options between Chicago and Seattle vary depending on your airline and origin airport. When flying from ORD on a one-stop flight with Spirit Airlines, expect a layover at Harry Reid International (LAS) in Las Vegas.

  • Which of the airports in Chicago is the best to fly out of for flights to Seattle?

    Flying from Chicago ORD will give you more flight options as it is the larger and busier of the two Chicago airports. The airport is a major hub for several airlines including United Airlines and American Airlines. Additionally, it has more amenities including lounges, restaurants, and shops.

  • What is the cheapest flight from Chicago to Seattle?

    In the last 5 days, the lowest price for a flight from Chicago to Seattle was $176 for a one-way ticket and $324 for a round-trip.

  • Do I need a passport to fly between Chicago and Seattle?

    No, a passport isn't needed to fly from Chicago to Seattle. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Chicago to Seattle?

    There are 2 airports in Chicago (Chicago Midway and Chicago O'Hare Intl.) and only 1 airport in Seattle (Seattle/Tacoma Intl). The cheapest flights are generally found on the Chicago Midway Airport to Seattle/Tacoma Intl flight route.

  • Which airlines offer Wi-Fi service onboard planes from Chicago to Seattle?

    American Airlines, Delta, Alaska Airlines, and JetBlue offer inflight Wi-Fi service on the Chicago to Seattle flight route.

  • Which aircraft models fly most regularly from Chicago to Seattle?

    The Boeing 737-900 is the aircraft model that flies most regularly on the Chicago to Seattle flight route.

  • Which airline alliances offer flights from Chicago to Seattle?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Chicago and Seattle, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Chicago to Seattle?

    There are nonstop flights from Chicago to Seattle on a daily basis.

  • Which is the best airline for flights from Chicago to Seattle, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to Seattle are Southwest and Alaska Airlines. With an average price for the route of $295 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $347 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Chicago to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Chicago with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chicago to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $202 or less one-way and $334 or less round-trip.
  • You will be using either the Midway airport or O’Hare airport when flying to Seattle from Chicago. The Midway airport is located approximately 8 miles away from the loop. The O’Hare airport is situated approximately 14 miles from the Loop business district. It is one of the busiest airports in Chicago.
  • The O'Hare airport has different parking spaces to suit your preferences. Some of the parking spaces include hourly parking spaces where you pay $3 per hour, daily parking lots where you pay $42 per day, international parking lots where you pay $3 per hour, Economy G and F where you pay $15 and $22 per day respectively. You can reserve a parking lot early enough to avoid any inconvenience.
  • Midway airport collaborates with reputable transport companies to offer transfer services to and from the airport. You can access the city from the airport via train, taxi or by bus. If you want to experience a VIP travel experience, you can hire a limo from a reputable company.
  • The Seattle international airport is renowned due to its wide array of amenities that enhance your traveling experience. There is a lost and found department where you can report any items you may have lost within the airport premises. You will be contacted once your property is found. This department mainly deals with items that may have gotten lost within the premises but if you lost your property while on a flight, contact your airline and report the same.
  • Security is usually beefed up at the Midway airport. All passengers arriving or departing from the airport undergo a vigorous security check before they are cleared. There is a security department where any cases of lawlessness at the airport can be reported. As a passenger, you are assured of top security when departing or arriving at the airport.
  • O'Hare airport has plenty of shops and restaurants where you will get to enjoy a plethora of cuisines. There are both sit-in and takeaway restaurants. You can enjoy duty-free shopping at any of the shopping outlets. The products are not only affordable but also high-quality.
  • Chicago O’Hare International Airport (ORD) consists of Terminals 1, 2, 3, and 5 and Concourses B, C, E, F, G, H, K, L, M. While it is a large airport, getting around it is easy thanks to an automated train that ferries passengers across the four terminals.
  • Seattle-Tacoma International Airport (SEA) schedules live music performances throughout the airport as part of its Experience the City of Music program. The performances run daily from 9 a.m. to 3 p.m.
  • Consider flying from Chicago-Midway International Airport (MDW) if you’re looking to avoid the crowds typical of major airports. MDW being smaller than ORD means it is usually less crowded and therefore easier to navigate.

Prefer to fly direct from Chicago to Seattle?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Chicago to Seattle/Tacoma Intl.
Find which airlines fly direct from Chicago to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Chicago to Seattle/Tacoma Intl

Monday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Tuesday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Wednesday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Thursday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Friday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Saturday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Sunday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to Chicago

Monday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Tuesday

Aer Lingus,Alaska Airlines,American Airlines, +3 more

Aer Lingus,Alaska Airlines, +4 more

Wednesday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Thursday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Friday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Saturday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Sunday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

See more direct flights

Everything you need to know for your flight from Chicago to Seattle

Information on your arrival and departure airports