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Cheap Flights from Washington Dulles to Key West International

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      Travellers and cabin class, 1 Adult, Economy

      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

      Book the best Key West International fare with no extra fees

      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 R 3,168. Find the lowest prices on one-way and return tickets right here.
      Key West.R 1,780 per passenger.Departing Sun, 15 Nov.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Washington Dulles on Sun, 15 Nov, arriving in Key West International.Price includes taxes and charges.From R 1,780, select.
      Key West.R 2,025 per passenger.Departing Thu, 27 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Thu, 27 Aug, arriving in Key West International.Price includes taxes and charges.From R 2,025, select.
      Key West.R 2,141 per passenger.Departing Thu, 1 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Thu, 1 Oct, arriving in Key West International.Price includes taxes and charges.From R 2,141, select.
      Key West.R 2,166 per passenger.Departing Tue, 8 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Tue, 8 Sep, arriving in Key West International.Price includes taxes and charges.From R 2,166, select.
      Key West.R 2,340 per passenger.Departing Wed, 15 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Wed, 15 Jul, arriving in Key West International.Price includes taxes and charges.From R 2,340, select.
      Key West.R 4,298 per passenger.Departing Tue, 29 Dec.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Tue, 29 Dec, arriving in Key West International.Price includes taxes and charges.From R 4,298, select.
      Key West.R 4,300 per passenger.Departing Sun, 21 Feb.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Sun, 21 Feb, arriving in Key West International.Price includes taxes and charges.From R 4,300, select.
      Key West.R 4,461 per passenger.Departing Tue, 5 Jan.One-way flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Tue, 5 Jan, arriving in Key West International.Price includes taxes and charges.From R 4,461, select.
      Key West.R 5,071 per passenger.Departing Tue, 5 Jan.One-way flight with United.Outbound direct flight with United departs from Washington Dulles on Tue, 5 Jan, arriving in Key West International.Price includes taxes and charges.From R 5,071, 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 November.
      Jul
      from R 2,340
      Aug
      from R 2,025
      Sep
      from R 2,166
      Oct
      from R 2,141
      Nov
      from R 1,780
      Dec
      from R 4,298
      Jan
      from R 4,461
      Feb
      from R 4,300
      Mar
      Find prices
      Apr
      Find prices
      May
      Find prices
      Jun
      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 R 1,780
      Search flights

      Washington D.C. to Key West: Flight information

      The things to know before you go.
      Cheapest flight foundR 1,780
      Cheapest month to flyNovember
      Average flight time3 hrs, 22 mins
      Most popular airlineUnited
      Average flights per week16

      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 R 3,168. 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 July 2026, there are 16 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 August.
      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 Saturday, 15 August 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.

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

      • Take a direct flight from Washington Dulles Airport to Key West International Airport and you'll be in the air for an average of 3 hours 25 minutes.

      • Flights from IAD to EYW start at 08:15 — the earliest with United Airlines. The last departure is at 09:00 with United Airlines. Overall, you can choose from three weekly Washington Dulles Airport to Key West International Airport flights.

      • Your IAD to EYW flight won't wait if you're late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

      • Flying during a peak time like July? Major public holidays and other popular seasons can mean longer lines at check-in and security. Play things extra safe and get there up to four hours ahead of an international flight and two hours before a domestic departure.

      • United is your ticket to exploring Key West (and perhaps some other exciting parts of the United States!). Browse the direct flights from Washington Dulles Airport to Key West International Airport offered by this carrier.

      • United tops the list for bookings on this route.

      • Among carriers operating IAD to EYW flights, United leads the way for on-time arrivals.

      • We make it a cinch to book a flight with a stopover. To see all your options for tickets from Washington Dulles Airport to Key West International Airport, deselect 'Direct flights only.' Then, pick a flight with a stop long enough to visit your chosen city. Top stopovers between IAD and EYW include:

        • Atlanta Hartsfield-Jackson Airport

        • Miami International Airport

        • Fort Lauderdale International Airport

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

      • R 1,780 is the best price for a one-way Washington Dulles Airport to Key West International Airport flight. A return flight starts at R 3,168. These fares can change depending on demand.

      • To pick up cheap tickets from IAD to EYW, book your trip two months before your planned departure.

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

      • Stay on top of deals for cheap flights from IAD to EYW by setting up a Price Alert. We'll send you an email or notification on the app when a new discounted fare appears.

      • Discover the ideal flight for you with the help of the filters. To see the 'Best,' 'Fastest' or 'Cheapest' flights from Washington Dulles Airport to Key West International Airport, use the 'Sort by' function. You can also filter results by airline, arrival and departure times, and journey duration.

      Handy information about Washington Dulles Airport (IAD)

      • The address for IAD is 1 Saarinen Circle.

      • 77% of flights that depart Washington Dulles Airport reach their destination on time.

      • Washington Dulles Airport is about 40 kilometres from central Washington DC. If you're driving, catching a taxi or ride-sharing from the centre, it'll take 45 minutes or so to arrive, depending on the traffic.

      • The trip when using public transport usually takes 1 hour 10 minutes.

      • Catching an early flight from Washington Dulles Airport to Key West International Airport? Avoid the hassle of rushing to the airport (and sneak in some extra precious sleep) by picking one of these hotels near IAD:

      Arriving at Key West International Airport (EYW)

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

      • You'll find EYW at 3491 South Roosevelt Boulevard.

      • From Key West International Airport, Key West is approximately 5 kilometres away. It takes around 10 minutes to get to the centre driving.

      • If you're travelling by public transport, expect a journey of roughly 20 minutes.

      When to fly to Key West International Airport (EYW)

      • April is the most popular month for flights from Washington Dulles Airport to Key West International Airport. To avoid the crowds, go to Key West in September.

      • The warmest month in Key West is August, with the temperature ranging between 26ºC (79ºF) and 30ºC (86ºF). Book your flights from Washington Dulles Airport to Key West International Airport in this month if you enjoy this type of weather.

      • January has average temperatures of between 18ºC (64ºF) and 23ºC (73ºF). Look for cheap tickets from IAD to EYW sometime then if you'd rather travel in cooler conditions.

      Explore more of the United States

      • You've seen Key West, now it's time to discover more of the United States. Travel around 209 kilometres north-east to Miami to check off its must-visit sights. From Beach to Ocean Drive and Port of Miami, you'll have a packed itinerary ahead.

      • Around 386 kilometres north of Key West, Tampa is another favourite stop in the United States. No visit is complete without checking out Busch Gardens Tampa, The Florida Aquarium and ZooTampa at Lowry Park.

      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 12 days.