$163 Cheap Delta flights Hartford (BDL) to Seattle (SEA)

Make use of the “Price (lowest to highest)” filter on Expedia to search for cheap Delta Air Lines return flights from $319 from BDL to SEA. Affordable one-way options from $163 are also available.**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 quieter months of January and February. Whether you need a return or one-way ticket, you could find a better deal then.

Look for cheap Delta Air Lines flights from Bradley Intl. Airport (BDL) to Seattle - Tacoma Intl. Airport (SEA) one to three months ahead of 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. No matter the fare class and itinerary, 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.

Use the “Nonstop” filter when searching for direct Delta Air Lines flights from BDL to SEA. It’s also an easy way to compare other airlines servicing the same nonstop journey.

Filter your results by “Morning” and “Early Morning” to find the earliest departures from BDL to SEA. Leaving early means you’re 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.

Seattle - Tacoma Intl. Airport (SEA) is the main Seattle hub for Delta Air Lines flights from Bradley Intl. Airport (BDL).

Offering an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is a top choice for many passengers flying from BDL to SEA. Plus, if you’re a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be used on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the type of ticket you purchased, a fee generally applies if you change or cancel your flight more than 24 hours after it has been confirmed. To find flexible fares, select our “Changes included” or “No cancel fee” filter when looking for flights. For additional information on canceling or modifying your reservation, go to “Trips,” select your flight and tick “Manage Booking.”