Cheap Flights from Washington to Key West

Cheapest flights from Washington to Key West

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Washington to Key West. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$171

Frontier Airlines

2 layovers

18h 40m

02/11/2026

The cheapest one-way flight from Washington to Key West departs on 02/11/2026, is operated by Frontier Airlines and costs $171

Cheapest round trip flight

$237

Frontier Airlines

1 layover

1d 3h 17m

02/01/2026

The cheapest roundtrip flight from Washington to Key West departs on 02/01/2026, is operated by Frontier Airlines and costs $237

The fastest flight

18h 40m

Fastest flight from Washington to Key West takes 18h 40m

Direct flights

Once a week

There are direct flights on this route 1 day a week: We

Earliest flight

1:00 PM

Latest flight

1:00 PM

Direct flights count

8

Distance

1655km

Timezone difference

0h

The distance between Washington and Key West is 1655km (1026 miles). There are 8 direct flights from Washington to Key West. Washington and Key West are in the same time zone. Flights from Washington begin at 1:00 PM. The latest flight from Washington departs at 1:00 PM

Remember that on average the ideal time to book flights is 2 months before departure!

Airfare from Washington to Key West by month

We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Washington to Key West

February 2026

Lowest price

on average:

$148

Avg Price

Airlines operating on route

Flights from Washington to Key West are operated by several airlines — United Airlines and Frontier Airlines. This allows passengers to flexibly choose flights based on departure time, cost, and additional services. The minimum ticket price starts at $171, making this destination accessible to travelers with different budgets. We help compare all available options in real time, so you can book tickets at the best value for money. The service ensures transparent search and lets you book affordable flights in just a few clicks.

United Airlines

starting at $266

Frontier Airlines

starting at $171

Non-stop flights from Washington to Key West

A non-stop flight is the most convenient and comfortable way to fly from Washington to Key West, despite the fact that sometimes flights with transfers can cost significantly less.

Washington — Key West

WAS — EYW

02/11/2026

Departure

Direct flight

UA4054

starting at $266

Schedule of direct flights from Washington to Key West

A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Washington to Key West:

Unable to find information about the schedule of direct flights from

Washington airports overview

Ronald Reagan National Airport

•

DCA

5km

Convenient for downtown Washington, D.C. and the National Mall, offering primarily domestic and short-haul flights with direct Metro access and quick transfers across the Potomac.

Washington Dulles International Airport

•

IAD

37km

•

Key West airports overview

Key West International Airport

•

EYW

3km

•

Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

What is the cheapest price for flights from Washington to Key West?

The cheapest flight ticket from Washington to Key West according to data for the last 48 hours costs $171

When is the best time to buy air tickets on the route Washington — Key West?

Often the best time to buy tickets from Washington to Key West is 2 months before departure.

When is the cheapest time of year to fly from Washington to Key West?

Based on statistics over the past years, the lowest prices for flights from Washington to Key West can be found flying in these months: February.

How long does it take to fly from Washington to Key West?

The fastest flights from Washington to Key West start from 18 hours 40 minutes in the air.

Which airline can fly direct from Washington to Key West?

The following airlines operate direct flights on the route Washington — Key West: United Airlines

Special offers and sales on air tickets from Washington to Key West

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

We couldn't find any special offers for flights from Washington to Key West

Alternative routes

Baltimore ➜ Key West•Charlottesville ➜ Key West•Hagerstown ➜ Key West•Lancaster ➜ Key West•Philadelphia ➜ Key West•Richmond ➜ Key West•Washington ➜ Cienfuegos•Washington ➜ Fort Lauderdale•Washington ➜ Lakeland•Washington ➜ West Palm Beach•Washington ➜ Santa Clara•Washington ➜ Sarasota•Washington ➜ Tampa

•••••••••••••••••••

Cheapest one way flight

$171

Frontier Airlines

2 layovers

18h 40m

02/11/2026

The cheapest one-way flight from Washington to Key West departs on 02/11/2026, is operated by Frontier Airlines and costs $171

Cheapest round trip flight

$237

Frontier Airlines

1 layover

1d 3h 17m

02/01/2026

The cheapest roundtrip flight from Washington to Key West departs on 02/01/2026, is operated by Frontier Airlines and costs $237

The fastest flight