$76 Find Cheap Flights from Washington Dulles Airport to Key West - Compare and Save

These are the earliest and latest flight times available from Washington, D.C. Dulles Intl Airport to Key West:

• Earliest: departs at 9:00 am and lands at 12:10 pm
• Latest: departs at 9:00 am and lands at 12:10 pm.

The flight takes about 3h 10m.

Two cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Key West:

• Economy Class
• First Class

A nonstop flight from Washington, D.C. Dulles Intl Airport to Key West takes 3h 10m, covering 1,025 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Washington, D.C. Dulles Intl Airport to Key West range from $340 to $567, with an average of $432 over the past 12 months. Anything below $340 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 14% above the $432 route average. Book 18 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $279 round-trip via Orlando (MCO), compared to $419 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737-700 family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Embraer 175 (Enhanced Winglets) variants.

One-way fares from Washington, D.C. Dulles Intl Airport to Key West are currently in line with typical prices for this route. Average one-way fares are about $279.

Key West Airport (EYW) hosts 5 major car rental companies, with daily rates averaging $67 for economy cars. Top options include:

• Dollar
• Hertz
• Budget
• Enterprise Rent-A-Car
• Alamo

Flights from Washington, D.C. Dulles Intl Airport to Key West usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Key West (EYW).

One-stop flights from Washington, D.C. Dulles Intl Airport to Key West most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 53% of one-stop connections
• Charlotte Douglas (CLT) - 45% of one-stop connections
• Orlando (MCO) - 1% of one-stop connections
• Knoxville McGhee Tyson (TYS) - 1% of one-stop connections

Yes. Flexible dates can save you up to 33% on flights from Washington, D.C. Dulles Intl Airport to Key West. Tuesday is the cheapest departure day at $343 round-trip on average, while Thursday is the most expensive at $511, a difference of $168.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Only United Airlines operates flights between Washington, D.C. Dulles Intl Airport and Key West.

Flying via Atlanta Hartsfield-Jackson (ATL) gives the shortest average 1-stop total travel time at 5h 14m, compared with 5h 30m via Charlotte Douglas (CLT) and 8h 50m via Knoxville McGhee Tyson (TYS).

Some of the most popular sights in Key West are Duval Street, Key West Historic District and Mallory Square. These are among the most viewed places in Key West on KAYAK.

Among airlines operating Washington, D.C. Dulles Intl Airport to Key West flights:

• United Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in First Class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.