$126 Cheap United flights Key West (EYW) to Washington (IAD)

View $126 flight on Tue, Oct 28, 2025Opens in a new window

$126 Cheap United flights Key West (EYW) to Washington (IAD)

Prices were available within the past 7 days and start at $126 for one-way flights and $239 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Jan 9 - Mon, Jan 12
EYW
Key West
IAD
Washington
$239 Roundtrip, found 6 days ago
$239
Roundtrip
found 6 days ago
Select United flight, departing Fri, Jan 9 from Key West to Washington, returning Mon, Jan 12, priced at $239 found 6 days ago
United
Thu, Feb 12 - Tue, Feb 17
EYW
Key West
IAD
Washington
$257 Roundtrip, found 18 hours ago
$257
Roundtrip
found 18 hours ago
Select United flight, departing Thu, Feb 12 from Key West to Washington, returning Tue, Feb 17, priced at $257 found 18 hours ago
United
Wed, Nov 12 - Mon, Nov 17
EYW
Key West
IAD
Washington
$265 Roundtrip, found 4 days ago
$265
Roundtrip
found 4 days ago
Select United flight, departing Wed, Nov 12 from Key West to Washington, returning Mon, Nov 17, priced at $265 found 4 days ago
United
Thu, Feb 12 - Tue, Feb 17
EYW
Key West
IAD
Washington
$267 Roundtrip, found 18 hours ago
$267
Roundtrip
found 18 hours ago
Select United flight, departing Thu, Feb 12 from Key West to Washington, returning Tue, Feb 17, priced at $267 found 18 hours ago
United
Thu, Feb 12 - Tue, Feb 17
EYW
Key West
IAD
Washington
$279 Roundtrip, found 18 hours ago
$279
Roundtrip
found 18 hours ago
Select United flight, departing Thu, Feb 12 from Key West to Washington, returning Tue, Feb 17, priced at $279 found 18 hours ago
United
Fri, Jan 9 - Mon, Jan 12
EYW
Key West
IAD
Washington
$289 Roundtrip, found 6 days ago
$289
Roundtrip
found 6 days ago
Select United flight, departing Fri, Jan 9 from Key West to Washington, returning Mon, Jan 12, priced at $289 found 6 days ago
Flights from Key West (EYW) to Washington (IAD)
Origin airport
Key West Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Popular airline
American Airlines
Distance
1026 mi

Frequently asked questions

How much is a United Airlines flight from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD)?
Finding cheap one-way United Airlines flights from EYW to IAD from $126 on Expedia is a breeze — just filter by "Price (lowest to highest)." Or check out our budget-friendly return fares from $239 for your next adventure.**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.
What is the cheapest month to fly from EYW to IAD with United Airlines?
Browse for one-way or round-trip flights to Washington in January or February. You could find an affordable fare with United Airlines during these off-season months.
What is the cheapest time to book flights from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD) with United Airlines?
For cheap United Airlines fares from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD), start searching one to three months before your intended departure. Securing 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 affect what you pay. Sunday is usually the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking 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.
Does United Airlines fly nonstop from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD)?
Hop on one of United Airlines's 7 direct weekly flights from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD). To see your options, enter your travel dates, origin and destination and hit search. Next, apply the "Nonstop" and "Airline" filters.
How long does it take to fly from EYW to IAD with United Airlines?
From takeoff till landing, a nonstop United Airlines flight from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD) typically takes 2h 42m.
What is the earliest United Airlines flight from EYW to IAD?
The earliest flight from EYW to IAD with United Airlines departs at 12:25PM UTC-5. You'll land at 3:07PM UTC-5. The last United Airlines flight of the day takes off at 12:25PM UTC-5 and arrives at 3:07PM UTC-5. With 20% fewer cancellations for early and mid-morning flights, setting off early is often the best way to go.**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.
What airports does United Airlines fly into in Washington?
Washington Dulles Intl. Airport (IAD) is the main gateway for United Airlines flights from Key West Intl. Airport (EYW) to Washington. But the airline also travels to Ronald Reagan Washington National Airport (DCA). Be sure to select the "All Airports" option for your destination to see what's available for your journey to Washington.
Why fly with United Airlines from EYW to IAD?
Travel from EYW to IAD with United Airlines and you'll enjoy a host of benefits including a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you could also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD)?
Hop on a United Airlines flight from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD), and you'll usually be on an Embraer 175. Keep in mind though, that the aircraft type can change due to operational needs.
Can I change or cancel my United Airlines flight from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD)?
Changes are often free within 24 hours of making your booking, but your airline may charge a fee after that. For more details about altering your reservation, go to your "Trips," select your flight and click on "Manage Booking." If you'd like the freedom to change your plans without additional charges, check the "No cancel fee" or "Changes included" filter when planning your trip.

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*Available to One Key members.