$177 Cheap Delta flights Seattle (SEA) to Chicago (MDW)

You’ll find affordable return Delta Air Lines flights from $343 from SEA to MDW by filtering your results from “Price (lowest to highest)” on Expedia. Or look for options from $177 for a one-way trip.**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.

Browse for return or one-way flights to Chicago in January or February. You could find an affordable fare with Delta Air Lines during these off-peak travel months.

Start searching one to three months ahead of your departure date to score cheap fares on Delta Air Lines flights from Seattle - Tacoma Intl. Airport (SEA) to Midway Intl. Airport (MDW). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic journeys.*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.

Simply enter your dates, press search and select the “Nonstop” filter on Expedia to find any direct flights from SEA to MDW with Delta Air Lines or another carrier.

Sort your results by “Early Morning” and “Morning” to find the earliest departures from SEA to MDW. Setting off early means you’re 20% less likely to experience cancellations.**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.

Delta Air Lines flights from Seattle - Tacoma Intl. Airport (SEA) to Chicago arrive at Midway Intl. Airport (MDW). This is the main gateway here.

Delta Air Lines makes traveling from SEA to MDW enjoyable with an excellent in-flight experience and a rewarding loyalty program. You could even start collecting points with Delta SkyMiles. Remember to sign up to Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

It’s usually possible to change or cancel your flight, although there may be additional charges if your booking was made more than 24 hours ago. Need to keep your options open? Apply the “Changes included” or “No cancel fee” filter to find flights that won’t charge extra if you have to alter your plans. To update your itinerary, head to “Trips,” select your flight and click on “Manage Booking” for more details.