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148 € Cheap Flights from Washington Dulles to Key West International

Compare Washington Dulles to Key West International flight deals

Find the cheapest month or even day of the year to fly to Key West International

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Flight deals from Washington Dulles to Key West International

Looking for a cheap last-minute deal or the best return flight from Washington Dulles Airport to Key West International Airport? If you want to travel next month, return fares start from 168 €. Find the lowest prices on one-way and return tickets right here.
Key West.148 € per passenger.Departing Thu, 28 May, returning Tue, 2 Jun.Return flight with Frontier Airlines and Breeze Airways.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Thu, 28 May, arriving in Key West International.Inbound indirect flight with Breeze Airways, departs from Key West International on Tue, 2 Jun, arriving in Washington Dulles.Price includes taxes and charges.From 148 €, select.
Key West.167 € per passenger.Departing Sun, 17 May, returning Thu, 21 May.Return flight with Allegiant Air and Breeze Airways.Outbound indirect flight with Allegiant Air, departs from Washington Dulles on Sun, 17 May, arriving in Key West International.Inbound indirect flight with Breeze Airways, departs from Key West International on Thu, 21 May, arriving in Washington Dulles.Price includes taxes and charges.From 167 €, select.
Key West.168 € per passenger.Departing Sat, 6 Jun, returning Fri, 12 Jun.Return flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Sat, 6 Jun, arriving in Key West International.Inbound indirect flight with Allegiant Air, departs from Key West International on Fri, 12 Jun, arriving in Washington Dulles.Price includes taxes and charges.From 168 €, select.
Key West.210 € per passenger.Departing Thu, 16 Jul, returning Sun, 19 Jul.Return flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Thu, 16 Jul, arriving in Key West International.Inbound indirect flight with Allegiant Air, departs from Key West International on Sun, 19 Jul, arriving in Washington Dulles.Price includes taxes and charges.From 210 €, select.
Key West.219 € per passenger.Departing Sat, 8 Aug, returning Fri, 14 Aug.Return flight with Frontier Airlines and Breeze Airways.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Sat, 8 Aug, arriving in Key West International.Inbound indirect flight with Breeze Airways, departs from Key West International on Fri, 14 Aug, arriving in Washington Dulles.Price includes taxes and charges.From 219 €, select.
Key West.236 € per passenger.Departing Sat, 27 Jun, returning Fri, 3 Jul.Return flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Sat, 27 Jun, arriving in Key West International.Inbound indirect flight with Allegiant Air, departs from Key West International on Fri, 3 Jul, arriving in Washington Dulles.Price includes taxes and charges.From 236 €, select.
Key West.263 € per passenger.Departing Wed, 2 Sep, returning Sat, 5 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Wed, 2 Sep, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Sat, 5 Sep, arriving in Washington Dulles.Price includes taxes and charges.From 263 €, select.
Key West.301 € per passenger.Departing Thu, 29 Oct, returning Sat, 31 Oct.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Thu, 29 Oct, arriving in Key West International.Inbound indirect flight with United, departs from Key West International on Sat, 31 Oct, arriving in Washington Dulles.Price includes taxes and charges.From 301 €, select.
Key West.325 € per passenger.Departing Wed, 16 Dec, returning Sat, 19 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Wed, 16 Dec, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Sat, 19 Dec, arriving in Washington Dulles.Price includes taxes and charges.From 325 €, select.
Key West.339 € per passenger.Departing Fri, 6 Nov, returning Fri, 13 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Fri, 6 Nov, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Fri, 13 Nov, arriving in Washington Dulles.Price includes taxes and charges.From 339 €, select.
Key West.357 € per passenger.Departing Sat, 25 Jul, returning Sat, 1 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Sat, 25 Jul, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Sat, 1 Aug, arriving in Washington Dulles.Price includes taxes and charges.From 357 €, select.
Key West.411 € per passenger.Departing Fri, 15 Jan, returning Fri, 22 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Fri, 15 Jan, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Fri, 22 Jan, arriving in Washington Dulles.Price includes taxes and charges.From 411 €, select.
Key West.412 € per passenger.Departing Mon, 1 Mar, returning Sat, 6 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Mon, 1 Mar, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Sat, 6 Mar, arriving in Washington Dulles.Price includes taxes and charges.From 412 €, select.
Key West.517 € per passenger.Departing Tue, 27 Oct, returning Sun, 1 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Tue, 27 Oct, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Sun, 1 Nov, arriving in Washington Dulles.Price includes taxes and charges.From 517 €, select.
Key West.517 € per passenger.Departing Thu, 4 Feb, returning Mon, 8 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Thu, 4 Feb, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Mon, 8 Feb, arriving in Washington Dulles.Price includes taxes and charges.From 517 €, select.
Key West.517 € per passenger.Departing Thu, 4 Feb, returning Sun, 7 Feb.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Thu, 4 Feb, arriving in Key West International.Inbound direct flight with United departs from Key West International on Sun, 7 Feb, arriving in Washington Dulles.Price includes taxes and charges.From 517 €, select.

Find the cheapest month to fly from Washington Dulles to Key West International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to Key West International flights are currently cheapest in May.
May
from 167 €
Jun
from 168 €
Jul
from 210 €
Aug
from 219 €
Sep
from 263 €
Oct
from 301 €
Nov
from 339 €
Dec
from 325 €
Jan
from 411 €
Feb
from 517 €
Mar
from 412 €
Apr
Find prices

Direct flights from Washington Dulles to Key West International

Washington Dulles to Key West International: Alternative routes

Compare routes from Washington Dulles to Key West below. You may find an airport to fly into that's cheaper, faster, or easier than Key West International.

Key West International

5km from central Key West
ClosestCheapest
from 148 €
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Washington D.C. to Key West: Flight information

The things to know before you go.
Cheapest flight found148 €
Cheapest month to flyMay
Average flight time3 hrs, 22 mins
Most popular airlineUnited
Average flights per week17

Finding cheap flights from Washington Dulles to Key West International: Frequently asked questions

The best price we found for a return flight from Washington Dulles to Key West International is 148 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 22 minutes is the average flight time from Washington Dulles to Key West International.
United and Republic Airways fly direct from Washington Dulles to Key West International.
As of May 2026, there are 17 flights per week flying from Washington Dulles to Key West International.
The cheapest month to fly from Washington Dulles to Key West International is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Key West International Airport on Thursday, 28 May 2026.
Yes – the average flight time is 3 hours and 22 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Key West International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Key West is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines and United offer the cheapest flight tickets to Key West International.

Flying from Washington Dulles International Airport (IAD) to Key West International Airport (EYW): what you need to know

  • The average duration of a direct flight from Washington Dulles International Airport to Key West International Airport is 3 hours 20 minutes.

  • To ensure you catch your IAD to EYW flight, leave enough time for things like baggage drop and finding your gate. Turning up two hours before international departures and an hour before domestic flights is the general rule.

  • You'll likely experience longer lines during popular months like April. Arriving up to four hours in advance for an international flight and two hours for a domestic departure will help ensure a smooth travel experience.

  • United Airlines is your gateway to discovering Key West (and perhaps some other exciting parts of United States!). Check out the direct flights from Washington Dulles International Airport to Key West International Airport offered by this airline.

  • United Airlines has the highest passenger demand on this route.

  • United Airlines is the most punctual carrier that offers IAD to EYW flights.

  • If you want to explore another city along the way, simply uncheck 'Direct flights only' when searching for your ticket from Washington Dulles International Airport to Key West International Airport. Here are the top stopovers between IAD and EYW:

    • Hartsfield-Jackson Atlanta International Airport

    • Miami International Airport

    • Fort Lauderdale-Hollywood International Airport

How to find the cheapest flights from Washington Dulles International Airport (IAD) to Key West International Airport (EYW)

  • Right now, 79 € is the cheapest price we've found for a one-way Washington Dulles International Airport to Key West International Airport flight. The best price for a return ticket is 148 €. Bear in mind that fares could change due to availability when booking.

  • To secure cheap tickets from IAD to EYW, reserve your journey eight months ahead of your departure.

  • July is the cheapest month for flights from Washington Dulles International Airport to Key West International Airport. If you prefer to travel at a different time of year, the 'Whole month' tool will show you the lowest airfares across every month.

  • You don't need to check every day to see if fares have gone down when you create a Price Alert. We'll notify you as soon as there's a change in price on cheap flights from IAD to EYW.

  • Choose your preferred arrival and departure times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to get the best deals on flights from Washington Dulles International Airport to Key West International Airport.

Handy information about Washington Dulles International Airport (IAD)

  • You'll find IAD at 1 Saarinen Circle.

  • Of all flights leaving Washington Dulles International Airport, 74.39% touch down on time at their destination.

  • To reach Washington Dulles International Airport from central Washington DC, it takes about 50 minutes if you're going by car. Of course, this depends on traffic. It's approximately 56 kilometres from the airport to the city centre.

  • Expect a journey time of roughly 3 hours 25 minutes on public transport.

  • Get your break off to a leisurely start by staying near IAD. Whether you've booked an early flight from Washington Dulles International Airport to Key West International Airport or just don't want to be rushed, these stays have you covered:

Arriving at Key West International Airport (EYW)

  • If you're arriving on a late Washington Dulles International Airport to Key West International Airport flight, few things top the convenience of staying near the terminal. Grab your suitcases from the carousel and then be showered and snoozing not long after at one of these options near EYW:

  • Go wherever you want, whenever you want with a Key West International Airport rental car. Book your wheels from Dollar, Alamo or Budget and discover more of Key West and beyond.

  • Booking your ride from Key West International Airport about two weeks in advance can help you get the lowest rate.

Getting from Key West International Airport (EYW) to central Key West

  • EYW is located at 3491 South Roosevelt Boulevard.

  • Key West International Airport to the centre of Key West has a drive time of around 5 minutes. It's approximately 3 kilometres away.

  • It takes roughly 40 minutes to get there by public transport.

When to fly to Key West International Airport (EYW)

  • The quietest month for a flight from Washington Dulles International Airport to Key West International Airport is February, while January is the most popular. Choose the best time to go to Key West based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • Lock in your flight from Washington Dulles International Airport to Key West International Airport for August if you'd like to explore Key West during its warmest month. You can expect temperatures of between 26ºC (79ºF) and 30ºC (86ºF).

  • Search for cheap tickets from IAD to EYW in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between 18ºC (64ºF) and 23ºC (73ºF) on average.

Explore more of United States

  • Key West is easy to fall in love with, but there are so many other corners of United States waiting to be explored. Around 209 kilometres north-east of Key West, a trip to Miami will keep your itinerary busy. Start with attractions like Wynwood Walls, Vizcaya Museum and Gardens and American Airlines Arena.

  • Tampa is another essential stop in United States and is around 386 kilometres north of Key West. No journey is complete without visiting Ybor City Tattoo Company, Tampa Riverwalk and The Florida Aquarium.

Plan the rest of your trip from Washington D.C. to Key West

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.