$89 Cheap Flights from Chicago (MDW) to Seattle (SEA)

View $89 flight on Fri, Feb 6, 2026Opens in a new window

Popular airlines from Chicago Midway Airport (MDW) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Chicago to Seattle (MDW-SEA)

Prices were available within the past 7 days and start at $89 for one-way flights and $140 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Dec 8 - Sat, Dec 13
MDW
Chicago
SEA
Seattle
$140 Roundtrip, found 10 hours ago
$140
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Mon, Dec 8 from Chicago to Seattle, returning Sat, Dec 13, priced at $140 found 10 hours ago
Southwest Airlines
Fri, Jan 23 - Sun, Jan 25
MDW
Chicago
SEA
Seattle
$177 Roundtrip, just found
$177
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Jan 23 from Chicago to Seattle, returning Sun, Jan 25, priced at $177 just found
Frontier Airlines
Mon, Dec 8 - Thu, Dec 11
MDW
Chicago
SEA
Seattle
$186 Roundtrip, found 10 hours ago
$186
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Mon, Dec 8 from Chicago to Seattle, returning Thu, Dec 11, priced at $186 found 10 hours ago
Southwest Airlines
Wed, Dec 10 - Sat, Dec 13
MDW
Chicago
SEA
Seattle
$189 Roundtrip, found 3 days ago
$189
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Wed, Dec 10 from Chicago to Seattle, returning Sat, Dec 13, priced at $189 found 3 days ago
Southwest Airlines
Thu, Jan 22 - Sat, Jan 24
MDW
Chicago
SEA
Seattle
$192 Roundtrip, found 7 hours ago
$192
Roundtrip
found 7 hours ago
Select Southwest Airlines flight, departing Thu, Jan 22 from Chicago to Seattle, returning Sat, Jan 24, priced at $192 found 7 hours ago
Southwest Airlines
Wed, Dec 10 - Sat, Dec 13
MDW
Chicago
SEA
Seattle
$195 Roundtrip, found 3 days ago
$195
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Wed, Dec 10 from Chicago to Seattle, returning Sat, Dec 13, priced at $195 found 3 days ago
Southwest Airlines
Fri, Jan 23 - Sun, Jan 25
MDW
Chicago
SEA
Seattle
$197 Roundtrip, just found
$197
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Jan 23 from Chicago to Seattle, returning Sun, Jan 25, priced at $197 just found
Southwest Airlines
Sat, Feb 21 - Sat, Feb 28
MDW
Chicago
SEA
Seattle
$197 Roundtrip, found 2 hours ago
$197
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Sat, Feb 21 from Chicago to Seattle, returning Sat, Feb 28, priced at $197 found 2 hours ago
Southwest Airlines
Thu, Jan 22 - Sat, Jan 24
MDW
Chicago
SEA
Seattle
$202 Roundtrip, found 7 hours ago
$202
Roundtrip
found 7 hours ago
Select Southwest Airlines flight, departing Thu, Jan 22 from Chicago to Seattle, returning Sat, Jan 24, priced at $202 found 7 hours ago
Delta
Tue, Dec 9 - Tue, Dec 16
MDW
Chicago
SEA
Seattle
$283 Roundtrip, found 10 hours ago
$283
Roundtrip
found 10 hours ago
Select Delta flight, departing Tue, Dec 9 from Chicago to Seattle, returning Tue, Dec 16, priced at $283 found 10 hours ago

Find the cheapest month to fly from Chicago (MDW) to Seattle (SEA)

September is typically the cheapest month to fly

From $114 - $487 per traveler.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $357
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $357

Frequently asked questions

How much does a flight from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA) cost?
Get a cheap one-way flight from $89 or cheap return flight from $140 from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA)?
The cheapest month to fly from MDW to SEA is December, when there's less demand. Off-peak months are typically when airlines offer better prices between these airports.
Which airlines fly direct from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA)?
When setting off from Midway Intl. Airport (MDW), you can jump on a direct flight to Seattle - Tacoma Intl. Airport (SEA) with Southwest Airlines.
What is the cheapest airline that flies from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA)?
To find the cheapest airline that'll fly you from MDW to SEA, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA)?
On average, there's only 1 direct flight leaving from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA) every day. If this doesn't fit your plans, consider flights with a layover. Just customize your search on Expedia to include one or more stops to discover the next best option.
What are the most popular departure times for flights from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA)?
More passengers fly between MDW and SEA at 9 AM than at any other time. Rather go when it's quieter? Try choosing a quieter departure window and you're likely to save on your fare as well.
What day of the week has the most flights from MDW to SEA?
Depart on a Friday if you're looking for the best choice of flights from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA).
What is the earliest flight from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA)?
Take the earliest flight at around 9:15AM UTC-6, heading out of Midway Intl. Airport (MDW). You'll be in the air for roughly 4h 35m, coming in to land at Seattle - Tacoma Intl. Airport (SEA) at approximately 11:50AM UTC-8.
How long does it take to fly from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA)?
It takes roughly 4 hours and 34 minutes to fly the 1,750 mi from MDW to SEA.
What is the best time to fly from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA)?
Opt for a flight from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA) that leaves before 3 PM to reduce the likelihood of delays. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Seattle from Midway Intl. Airport (MDW)?
Browse your flight options from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA). This is the only airport in Seattle you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Last-minute fares from MDW to SEA are typically more expensive. To secure the lowest rates, start looking for flights ahead of time. That being said, if you can play around with your travel dates, you may find a cheap ticket right before you leave.
Is it cheaper to book a MDW to SEA flight and hotel package?
You'll generally save money by booking a MDW to SEA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've selected your preferred accommodations and flights, consider adding extras including activities, tours and car rentals.
Can I cancel or change the date of my flight from Midway Intl. Airport (MDW) to Seattle - Tacoma Intl. Airport (SEA)?
If you reserved your MDW to SEA flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you purchased, 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 for more details.

Travel information

Origin airport
Midway Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Delta, Frontier Airlines, Southwest Airlines
Roundtrip price
$140
Distance
1728 mi
Average flight time
2 hours 35 mins

Book with confidence

Chicago to Seattle Flights

The cheapest times to fly from Chicago to Seattle

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 Chicago to Seattle are during the month of December. You can find some of the cheapest flights from Chicago to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Seattle

Sunday is one of the best days to book for cheap flights from Chicago to Seattle: 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 Chicago to Seattle

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 Chicago to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $89 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 Chicago to Seattle 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 Chicago to Seattle 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.

 

Chicago to Seattle Flights

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