$105 Cheap Delta flights Washington (IAD) to Key West (EYW)

You can discover affordable round-trip Delta Air Lines flights from $239 from IAD to EYW by sorting your results from “Price (lowest to highest)” on Expedia. Or look for deals from $105 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.

September is one of the most affordable months to jet away to Key West with Delta Air Lines. You could also find excellent prices on one-way and return fares in August.

Search for cheap Delta Air Lines flights from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW) one to three months before your departure day. 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 type and journey, the best day of the week to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel 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.

Select our “Nonstop” filter when browsing for direct Delta Air Lines flights from IAD to EYW. It’s also an easy way to compare other airlines servicing the same nonstop trip.

To find the earliest departure from IAD to EYW with Delta Air Lines, filter your search by “Early Morning” and “Morning.” Choosing an early flight generally means cancellations are less likely.**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 Washington Dulles Intl. Airport (IAD) to Key West come in to Key West Intl. Airport (EYW). This is the main entry point here.

Delta Air Lines makes traveling from IAD to EYW more enjoyable with an excellent in-flight experience and a rewarding loyalty program. You also have the chance to earn points with Delta SkyMiles. Make sure you sign up to Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are usually free within 24 hours of making a booking, but your airline may charge a fee after that time. For more details about modifying your flights, go to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your plans without additional charges, check the “No cancel fee” or “Changes included” filter when planning your next getaway.