$141 Cheap Delta flights Bloomington (BMI) to Seattle (SEA)

Landing cheap one-way Delta Air Lines flights from BMI to SEA from $141 on Expedia is simple — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $356 for your next break.**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.

Delta Air Lines flights to Seattle are often cheaper in the off-peak months of January and February. Whether you’re in search of a round-trip or one-way ticket, you could find a better deal then.

Look for cheap Delta Air Lines flights from Central Illinois Regional Airport (BMI) to Seattle - Tacoma Intl. Airport (SEA) one to three months before your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and journey, the ideal day to book a domestic flight is usually Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**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.

Fill in your dates, hit search and tick the “Nonstop” filter on Expedia to browse any direct flights from BMI to SEA with Delta Air Lines or other airlines.

Search Delta Air Lines’s earliest flights from BMI to SEA by using the “Morning” and “Early Morning” filters. Not only will you arrive at your destination sooner, early departures also experience 20% fewer 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 Central Illinois Regional Airport (BMI) to Seattle come in to Seattle - Tacoma Intl. Airport (SEA). This is the main entry point here.

Delta Air Lines makes flying from BMI to SEA enjoyable with an excellent in-flight experience and a rewarding loyalty program. You could even start earning points with Delta SkyMiles. Don’t forget to join 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.

Changes are often free within 24 hours of making your booking, but your airline may charge a fee after that. For further details about altering your flights, check out your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your itinerary without additional charges, check the “Changes included” and “No cancel fee” filters when organizing your trip.