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Cheap Flights from Key West (EYW) to Washington D.C. (IAD)

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      Travellers and cabin class, 1 Adult, Economy
      United

      Compare Key West International to Washington Dulles flight deals

      Find the cheapest month or even day of the year to fly to Washington Dulles

      Book the best Washington Dulles fare with no extra fees

      Flight deals from Key West International to Washington Dulles

      Looking for a cheap last-minute deal or the best return flight from Key West International Airport to Washington Dulles Airport? If you want to travel next month, return fares start from $471. Find the lowest prices on one-way and return tickets right here.
      Washington D.C..$448 per passenger.Departing Wed, 4 Nov, returning Wed, 11 Nov.Return flight with United.Outbound indirect flight with United, departs from Key West International on Wed, 4 Nov, arriving in Washington Dulles.Inbound indirect flight with United, departs from Washington Dulles on Wed, 11 Nov, arriving in Key West International.Price includes taxes and charges.From $448, select.
      Washington D.C..$448 per passenger.Departing Fri, 30 Oct, returning Fri, 6 Nov.Return flight with United.Outbound indirect flight with United, departs from Key West International on Fri, 30 Oct, arriving in Washington Dulles.Inbound indirect flight with United, departs from Washington Dulles on Fri, 6 Nov, arriving in Key West International.Price includes taxes and charges.From $448, select.
      Washington D.C..$471 per passenger.Departing Fri, 9 Oct, returning Sun, 11 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Key West International on Fri, 9 Oct, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Sun, 11 Oct, arriving in Key West International.Price includes taxes and charges.From $471, select.
      Washington D.C..$471 per passenger.Departing Thu, 10 Sep, returning Sun, 13 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Key West International on Thu, 10 Sep, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Sun, 13 Sep, arriving in Key West International.Price includes taxes and charges.From $471, select.
      Washington D.C..$503 per passenger.Departing Wed, 17 Feb, returning Wed, 24 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Key West International on Wed, 17 Feb, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Wed, 24 Feb, arriving in Key West International.Price includes taxes and charges.From $503, select.
      Washington D.C..$553 per passenger.Departing Tue, 24 Nov, returning Tue, 1 Dec.Return flight with United.Outbound indirect flight with United, departs from Key West International on Tue, 24 Nov, arriving in Washington Dulles.Inbound indirect flight with United, departs from Washington Dulles on Tue, 1 Dec, arriving in Key West International.Price includes taxes and charges.From $553, select.
      Washington D.C..$752 per passenger.Departing Sun, 14 Feb, returning Sun, 21 Feb.Return flight with United.Outbound direct flight with United departs from Key West International on Sun, 14 Feb, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Sun, 21 Feb, arriving in Key West International.Price includes taxes and charges.From $752, select.

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

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Key West International to Washington Dulles flights are currently cheapest in November.
      Aug
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      Sep
      from $471
      Oct
      from $471
      Nov
      from $448
      Dec
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      Jan
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      Feb
      from $503
      Mar
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      Apr
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      May
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      Jul
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      Direct flights from Key West International to Washington Dulles

      United

      Key West International to Washington Dulles: Alternative routes

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

      Washington Ronald Reagan

      5km from central Washington D.C.
      Closest
      from $471
      Search flights

      Washington Dulles

      37km from central Washington D.C.
      Cheapest
      from $448
      Search flights

      Baltimore Washington International

      44km from central Washington D.C.
      from $458
      Search flights

      Key West to Washington D.C.: Flight information

      The things to know before you go.
      Cheapest flight found$448
      Cheapest month to flyNovember
      Average flight time2 hrs, 45 mins
      Most popular airlineUnited
      Average flights per week8

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

      The best price we found for a return flight from Key West International to Washington Dulles is $448. 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.
      2 hours and 45 minutes is the average flight time from Key West International to Washington Dulles.
      United flies direct from Key West International to Washington Dulles.
      As of August 2026, there are 8 flights per week flying from Key West International to Washington Dulles.
      The cheapest month to fly from Key West International to Washington Dulles is usually November.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Key West International Airport to Washington Dulles Airport on Wednesday, 4 November 2026.
      Yes – the average flight time is 2 hours and 45 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 Washington Dulles 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 Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, United offers the cheapest flight tickets to Washington Dulles.

      How to find cheap flights to Washington D.C. (IAD) from Key West (EYW) in 2024

      Looking for cheap tickets from Key West International to Washington Dulles? Return tickets start from $448 and one-way flights to Washington Dulles from Key West International start from $188


      Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

      • Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets.
      • Compare flight deals to Washington D.C. from Key West from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flight tickets to Washington D.C. start from $188 one-way.
      • Flex your dates to find the best EYW-IAD ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to Washington Dulles from Key West International.
      • Set up a Price Alert. You can easily track the fare of your cheap flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
      • Fly without stops. Only interested in direct flights between Key West International and Washington Dulles? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results. Airlines that fly direct include: United
      • Find the cheapest Business class flights from Key West International and Washington Dulles. We scour the internet for the best Business, Premium Economy and First Class flight fares to Washington D.C., too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
      • Include nearby airports in your search. Widen your search for Key West International to Washington Dulles flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.
      • Search for cheap flights regardless of where you are. To get the best flight booking experience when out and about, download the app and search for plane tickets between Key West International and Washington Dulles whenever you want.

      Combine your flight to Washington Dulles from Key West International with hotels and car hire

      Once you've secured your cheap flight ticket from Key West International to Washington Dulles, discover the best prices and exclusive rates for hotels in Washington D.C. or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.


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

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.