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

Scoring cheap one-way United Airlines flights from IAD to EYW from $105 on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Alternatively, check out our affordable round-trip fares from $238 for your next exciting getaway.**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.

United Airlines flights to Key West tend to be cheaper in the off-peak months of September and August. Whether you’re in search of a one-way or a return ticket, you could score a better deal then.

For cheap United Airlines fares from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact the price you pay. Sunday is typically the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**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.

Choose from one of United Airlines’s 7 weekly direct flights from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW). To see your options, enter your origin, destination and dates and hit search. Next, apply the “Nonstop” and “Airline” filters.

It takes approximately 3h 14m to fly nonstop from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW) with United Airlines.

The earliest flight from IAD to EYW with United Airlines leaves at 8:25AM UTC-5. You’ll land at 11:39AM UTC-5. The last United Airlines flight of the day leaves at 8:25AM UTC-5 and arrives at 11:39AM UTC-5. With approximately 20% fewer cancellations for morning departures, starting your travel day early is often the wisest option.**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.

United Airlines flights from Washington Dulles Intl. Airport (IAD) to Key West touch down at Key West Intl. Airport (EYW). This is the main entry point here.

With a rewarding loyalty program, United Airlines is a popular choice for many passengers journeying from IAD to EYW. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll probably board an Embraer 175 for your United Airlines flight from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW). However, you may end up on a different aircraft if operational demands require it.

Changes are usually free within 24 hours of booking, but your airline may charge you after that time. For further details about modifying your reservation, go to your “Trips,” select your flight and click on “Manage Booking.” If you want the freedom to change your itinerary without being charged, apply the “Changes included” and “No cancel fee” filters when organizing your next break.