How long is the flight from Key West to Washington, D.C. Dulles Intl Airport?

For as low as $339, American Airlines can have you in Washington, D.C. Dulles Intl Airport from Key West in 4h 31m. Airlines will cover a distance of 1025 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What is the cheapest time of day to fly from EYW to IAD?

When flying from Key West to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Key West-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Key West-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Key West-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Key West-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Key West-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Key West to Washington, D.C. Dulles Intl?

Most people fly from Key West (EYW) if they book a flight from Key West to Washington, D.C. Dulles Intl. On average, Key West has 0 outbound flights to Washington, D.C. Dulles Intl per day from 0 airlines. Key West is conveniently located just 2.6 mi from Key West’s city center.

Can I find deals for flights from Key West to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Key West to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Key West to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key West to Dulles Intl.

Can I find deals for business class flights from Key West to Dulles Intl?

Yes. Cheapflights offers flight deals from Key West to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$109+ Cheap Flights from Key West to Washington, D.C. Dulles Intl Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Key West to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Key West to Dulles Intl

Cheapest

Best

Last-minute

One-way

Cheapest flights from Key West to Dulles Intl
Explore the most affordable flight options available from Key West to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 1, 2026.

Sat 9/1210:04 am -

1 stop8h 29m

Wed 9/1611:12 am -

1 stop23h 07m

Deal found 8/28

$324

Thu 10/84:45 pm -

1 stop4h 31m

Sun 10/116:15 am -

1 stop5h 53m

Deal found 8/28

$339

Mon 9/216:27 pm -

1 stop4h 24m

Mon 9/287:57 am -

1 stop5h 14m

Deal found 8/28

$364

Mon 9/216:19 pm -

1 stop6h 22m

Mon 9/286:00 am -

1 stop4h 46m

Deal found 8/31

$458

Tue 9/11:14 pm -

1 stop22h 29m

Wed 9/28:39 pm -

2 stops14h 46m

Deal found 8/28

$462

Thu 10/82:15 pm -

1 stop8h 44m

Sun 10/1110:15 pm -

2 stops15h 14m

Deal found 8/27

$708

Fri 9/182:20 pm -

1 stop8h 39m

Mon 9/216:15 am -

1 stop7h 14m

Deal found 8/31

$730

Best flights from Key West to Dulles Intl
Discover carefully curated flight deals from Key West to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.

Sat 9/1210:04 am -

1 stop8h 29m

Wed 9/1611:12 am -

1 stop23h 07m

Deal found 8/28

$324

Thu 10/84:45 pm -

1 stop4h 31m

Sun 10/116:15 am -

1 stop5h 53m

Deal found 8/31

$339

Mon 9/216:19 pm -

1 stop6h 22m

Mon 9/286:00 am -

1 stop4h 46m

Deal found 8/31

$458

Fri 2/194:05 pm -

1 stop8h 09m

Fri 3/51:00 pm -

Nonstop3h 22m

Deal found 8/30

$523

Mon 9/216:27 pm -

1 stop4h 24m

Mon 9/2810:25 am -

2 stops8h 52m

Deal found 8/28

$511

Thu 10/82:15 pm -

1 stop8h 44m

Sun 10/1110:15 pm -

2 stops15h 14m

Deal found 8/27

$708

Fri 9/182:20 pm -

1 stop8h 39m

Mon 9/216:15 am -

1 stop7h 14m

Deal found 8/31

$730

Last-minute flights from Key West to Dulles Intl
Discover last-minute flight deals from Key West to Dulles Intl. Data last updated September 1, 2026 and is based on user searches.

Tue 9/11:14 pm -

1 stop22h 29m

Wed 9/28:39 pm -

2 stops14h 46m

Deal found 8/28

$462

Sat 9/1210:04 am -

1 stop8h 29m

Wed 9/1611:12 am -

1 stop23h 07m

Deal found 8/28

$324

Fri 9/182:20 pm -

1 stop8h 39m

Mon 9/216:15 am -

1 stop7h 14m

Deal found 8/31

$730

Mon 9/216:27 pm -

1 stop4h 24m

Mon 9/287:57 am -

1 stop5h 14m

Deal found 8/28

$364

Mon 9/216:19 pm -

1 stop6h 22m

Mon 9/286:00 am -

1 stop4h 46m

Deal found 8/31

$458

One-way flights from Key West to Dulles Intl
Search for one-way flight options from Key West to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 1, 2026.

Wed 11/1810:04 am -

2 stops31h 08m

Deal found 8/28

$109

Sat 10/3110:04 am -

2 stops13h 39m

Deal found 8/27

$126

Mon 10/1910:59 am -

2 stops30h 14m

Deal found 8/29

$157

Thu 10/2910:59 am -

1 stop23h 22m

Deal found 8/29

$173

Sun 12/2010:59 am -

1 stop21h 20m

Deal found 8/31

$179

Fri 11/2710:59 am -

2 stops6h 57m

Deal found 8/31

$198

Fri 10/164:45 pm -

1 stop7h 13m

Deal found 8/30

$204

Find flight deals from Key West to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$324 (Kiwi.com)
One-way from	$109 (Kiwi.com)
Popular in	January
Cheapest in	October
Average price	$384

Provider with most accurate pricing for Key West-Washington, D.C. Dulles Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Key West-Washington, D.C. Dulles Intl flights.

Search Deals

From Key West to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Key West to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($130 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 20% potential price decrease ($99 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Key West to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Sat 9/12

10:04 am-6:33 pm

1 stop8h 29m

Washington, D.C. Dulles Intl

Wed 9/16

11:12 am-10:19 am

1 stop23h 07m

$324

Quickest round-trip

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Thu 10/8

4:45 pm-9:16 pm

1 stop4h 31m

Washington, D.C. Dulles Intl

Sun 10/11

6:15 am-12:08 pm

1 stop5h 53m

$339

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Mon 9/21

6:19 pm-12:41 am

1 stop6h 22m

Washington, D.C. Dulles Intl

Mon 9/28

6:00 am-10:46 am

1 stop4h 46m

$458

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Mon 9/21

6:27 pm-10:51 pm

1 stop4h 24m

Washington, D.C. Dulles Intl

Mon 9/28

10:25 am-7:17 pm

2 stops8h 52m

$511

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Fri 2/19

4:05 pm-12:14 am

1 stop8h 09m

Washington, D.C. Dulles Intl

Fri 3/5

1:00 pm-4:22 pm

Nonstop3h 22m

$523

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Thu 10/8

2:15 pm-10:59 pm

1 stop8h 44m

Washington, D.C. Dulles Intl

Sun 10/11

10:15 pm-1:29 pm

2 stops15h 14m

$708

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Fri 9/18

2:20 pm-10:59 pm

1 stop8h 39m

Washington, D.C. Dulles Intl

Mon 9/21

6:15 am-1:29 pm

1 stop7h 14m

$730

Cheapest one-way

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Sun 12/20

10:59 am-8:19 am

1 stop21h 20m

$179

Quickest one-way

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Sun 12/20

1:35 pm-4:15 pm

Nonstop2h 40m

$279

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Fri 1/8

7:00 am-2:41 pm

1 stop7h 41m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/31

Showing 1-10 of 14 resultsSorted by cheapest first

Compare providers for flights from Key West to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Key West to Dulles Intl in September.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Key West-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Key West-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Key West-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Key West-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Key West-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Key West to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Key West with our price prediction graph.

EYW-IAD

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

What airport do you fly from for flights from Key West to Washington, D.C. Dulles Intl?
Most people fly from Key West (EYW) if they book a flight from Key West to Washington, D.C. Dulles Intl. On average, Key West has 0 outbound flights to Washington, D.C. Dulles Intl per day from 0 airlines. Key West is conveniently located just 2.6 mi from Key West’s city center.
How long is the flight from Key West to Washington, D.C. Dulles Intl Airport?
For as low as $339, American Airlines can have you in Washington, D.C. Dulles Intl Airport from Key West in 4h 31m. Airlines will cover a distance of 1025 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
Can I find deals for flights from Key West to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Key West to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Key West to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key West to Dulles Intl.
Can I find deals for business class flights from Key West to Dulles Intl?
Yes. Cheapflights offers flight deals from Key West to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Alexandria

Owings Mills

Arlington

Tysons

Lanham

Reston

Herndon

Rockville

Chantilly

Hyattsville

Fredericksburg

Woodbridge

Falls Church

Sterling

Hanover

Laurel

Oxon Hill

Clinton

Hunt Valley

Silver Spring

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Dulles Intl flight routes

Flights by cabin class

Other flight options

Other flights from Key West

Popular flights

Alternative routes for Key West to Dulles Intl

Orlando to Reagan-National flights

Fort Lauderdale to Baltimore flights

Orlando to Baltimore flights

Orlando to Dulles Intl flights

Tampa to Dulles Intl flights

Miami to Reagan-National flights

Miami to Baltimore flights

Tampa to Baltimore flights

Tampa to Reagan-National flights

Fort Lauderdale to Dulles Intl flights

Jacksonville to Dulles Intl flights

Miami to Dulles Intl flights

Jacksonville to Baltimore flights

Fort Lauderdale to Reagan-National flights

Jacksonville to Reagan-National flights

Sarasota to Baltimore flights

Fort Myers to Dulles Intl flights

Fort Myers to Reagan-National flights

Fort Myers to Baltimore flights

Sarasota to Reagan-National flights

Pensacola to Dulles Intl flights

Tallahassee to Dulles Intl flights

Pensacola to Reagan-National flights

Tallahassee to Reagan-National flights

Daytona Beach to Dulles Intl flights

Sarasota to Dulles Intl flights

Daytona Beach to Reagan-National flights

Pensacola to Baltimore flights

Daytona Beach to Baltimore flights

Tallahassee to Baltimore flights

Panama City to Reagan-National flights

Valparaiso to Reagan-National flights

Valparaiso to Dulles Intl flights

Gainesville to Reagan-National flights

Gainesville to Dulles Intl flights

Panama City to Dulles Intl flights

Valparaiso to Baltimore flights

Panama City to Baltimore flights

Gainesville to Baltimore flights

Melbourne to Reagan-National flights

Melbourne to Dulles Intl flights

Melbourne to Baltimore flights

Key West to Reagan-National flights

Key West to Baltimore flights

Valdosta to Dulles Intl flights

Valdosta to Baltimore flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$109+ Cheap flights from Key West (EYW) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Key West to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Key West to Dulles Intl

Cheapest flights from Key West to Dulles IntlExplore the most affordable flight options available from Key West to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 1, 2026.

Explore the most affordable flight options available from Key West to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 1, 2026.

Best flights from Key West to Dulles IntlDiscover carefully curated flight deals from Key West to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.

Discover carefully curated flight deals from Key West to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.

Last-minute flights from Key West to Dulles IntlDiscover last-minute flight deals from Key West to Dulles Intl. Data last updated September 1, 2026 and is based on user searches.

Discover last-minute flight deals from Key West to Dulles Intl. Data last updated September 1, 2026 and is based on user searches.

One-way flights from Key West to Dulles IntlSearch for one-way flight options from Key West to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 1, 2026.

Search for one-way flight options from Key West to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 1, 2026.

Find flight deals from Key West to Dulles Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Key West to Washington, D.C. Dulles Intl Airport that are best for you.

Compare providers for flights from Key West to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Key West to Dulles Intl in September.

Best time to book a flight from Key West to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Key West with our price prediction graph.

Related info for your journey

What airport do you fly from for flights from Key West to Washington, D.C. Dulles Intl?

How long is the flight from Key West to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from Key West to Dulles Intl that include hotel bookings?

How can I find direct flights from Key West to Dulles Intl?

Can I find deals for business class flights from Key West to Dulles Intl?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Key West to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Dulles Intl by adding a car rental and/or hotel reservation to your travel itinerary.

Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 1, 2026.

Search flights from Key West to Dulles Intl by cabin class

Find flights from Key West to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Key West and Dulles Intl flights

Browse other Key West and Dulles Intl flight options. Last updated on September 1, 2026.

Other flights from Key West

Browse through other flights departing from Key West. Flights are based on user searches made on Cheapflights and were last updated on September 1, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Key West to Dulles Intl
Explore the most affordable flight options available from Key West to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 1, 2026.

Best flights from Key West to Dulles Intl
Discover carefully curated flight deals from Key West to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.

Last-minute flights from Key West to Dulles Intl
Discover last-minute flight deals from Key West to Dulles Intl. Data last updated September 1, 2026 and is based on user searches.

One-way flights from Key West to Dulles Intl
Search for one-way flight options from Key West to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 1, 2026.