What are the cheapest airlines flying from Key West to Washington, D.C. Dulles Intl Airport round-trip?

According to our current data, Delta ($239), American Airlines ($334), and United Airlines ($381) offers the cheapest pricing from Key West to Washington, D.C. Dulles Intl Airport.

What are the cheapest airlines to fly from Key West to Washington, D.C. Dulles Intl Airport one-way?

One-way options have recently been found by users for as low as $196 on United Airlines. Other airlines that offer cheap prices include Delta from $254 and American Airlines from $311 one-way.

What is the cheapest month to book a flight from Key West to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Key West to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Key West to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Key West to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Key West to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the cheapest flights from Key West to Washington, D.C. Dulles Intl Airport?

Looking at all options, your cheapest flight can be booked for $368. While the most popular route (Key West - Washington, D.C. Dulles Intl) can be booked for $239 on average our data indicates $588 when flying from Key West to Washington, D.C. Dulles Intl Airport.

What is the cheapest day to fly round-trip from Key West to Washington, D.C. Dulles Intl Airport?

Wednesday is generally a great day to depart. Flying on this day could help you save up to 19%.

What is the cheapest month to fly from Key West to Washington, D.C. Dulles Intl Airport?

Flights from Key West to Washington, D.C. Dulles Intl Airport lean towards being more expensive in March. Prices are generally better when you fly from Key West to Washington, D.C. Dulles Intl Airport in December, with the cheapest ticket starting at $236.

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

Unlike at noon, when flights are generally more expensive, you can save up to 68% on flights from Key West to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the afternoon.

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 1 airline. 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.

$196+ Flights from Key West to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Key West to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 2 stars
Round-trip from	$239 (Delta)
One-way from	$196 (United Airlines)
Popular in	March
Cheapest in	December
Average price	$547
Good one-way deal	$588 or less

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

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

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

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

Search Deals

Highest demand for flights based on searches. 22% potential increase in price ($125 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease ($29 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Price to beat on a one-way flight from Key West to Washington, D.C. Dulles Intl.

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Find flight deals from Key West to Dulles Intl

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 avril 29, 2025.

jeu. 5/296:25 pmEYW - IAD

1 stop6h 03mDelta

lun. 6/23:37 pmIAD - EYW

1 stop4h 30mDelta

Deal found 4/28

$239

ven. 7/412:39 pmEYW - IAD

1 stop5h 33mAmerican Airlines

mar. 7/159:03 amIAD - EYW

1 stop7h 15mAmerican Airlines

Deal found 4/28

$334

mar. 5/278:45 amEYW - IAD

1 stop26h 29mUnited Airlines

jeu. 5/296:50 pmIAD - EYW

1 stop23h 15mUnited Airlines

Deal found 4/28

$381

lun. 6/210:23 amEYW - IAD

2 stops25h 03mMultiple Airlines

ven. 6/63:13 pmIAD - EYW

2 stops23h 50mMultiple Airlines

Deal found 4/29

$396

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 avril 29, 2025.

jeu. 5/296:25 pmEYW - IAD

1 stop6h 03mDelta

lun. 6/23:37 pmIAD - EYW

1 stop4h 30mDelta

Deal found 4/28

$239

ven. 7/412:39 pmEYW - IAD

1 stop5h 33mAmerican Airlines

mar. 7/159:03 amIAD - EYW

1 stop7h 15mAmerican Airlines

Deal found 4/28

$334

mar. 5/278:45 amEYW - IAD

1 stop26h 29mUnited Airlines

jeu. 5/296:50 pmIAD - EYW

1 stop23h 15mUnited Airlines

Deal found 4/29

$381

lun. 6/210:23 amEYW - IAD

2 stops25h 03mMultiple Airlines

ven. 6/63:13 pmIAD - EYW

2 stops23h 50mMultiple Airlines

Deal found 4/29

$396

Last-minute flights from Key West to Dulles Intl
Discover last-minute flight deals from Key West to Dulles Intl. Data last updated avril 29, 2025 and is based on user searches.

ven. 5/29:51 amEYW - IAD

2 stops11h 18mMultiple Airlines

dim. 5/412:55 pmIAD - EYW

2 stops27h 21mMultiple Airlines

Deal found 4/28

$408

mar. 5/62:18 pmEYW - IAD

1 stop6h 49mUnited Airlines

jeu. 5/88:50 amIAD - EYW

1 stop9h 15mUnited Airlines

Deal found 4/28

$530

mar. 5/278:45 amEYW - IAD

1 stop26h 29mUnited Airlines

jeu. 5/296:50 pmIAD - EYW

1 stop23h 15mUnited Airlines

Deal found 4/28

$381

jeu. 5/296:25 pmEYW - IAD

1 stop6h 03mDelta

lun. 6/23:37 pmIAD - EYW

1 stop4h 30mDelta

Deal found 4/28

$239

jeu. 5/291:39 pmEYW - IAD

2 stops10h 23mAmerican Airlines

lun. 6/25:02 amIAD - EYW

2 stops5h 48mAmerican Airlines

Deal found 4/28

$344

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 avril 29, 2025.

mar. 5/208:45 amEYW - IAD

1 stop12h 12mUnited Airlines

Deal found 4/29

$196

mar. 5/206:25 pmEYW - IAD

1 stop5h 10mDelta

Deal found 4/28

$254

lun. 5/2610:23 amEYW - IAD

2 stops25h 03mMultiple Airlines

Deal found 4/28

$259

ven. 6/277:32 pmEYW - IAD

2 stops15h 16mAmerican Airlines

Deal found 4/28

$311

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

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

jeu. 5/29

6:25 pm-12:28 am

1 stop6h 03m

Washington, D.C. Dulles Intl

lun. 6/2

3:37 pm-8:07 pm

1 stop4h 30m

$239

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

ven. 7/4

12:39 pm-6:12 pm

1 stop5h 33m

Washington, D.C. Dulles Intl

mar. 7/15

9:03 am-4:18 pm

1 stop7h 15m

$334

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

mar. 5/27

8:45 am-11:14 am

1 stop26h 29m

Washington, D.C. Dulles Intl

jeu. 5/29

6:50 pm-6:05 pm

1 stop23h 15m

$381

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

lun. 6/2

10:23 am-11:26 am

2 stops25h 03m

Washington, D.C. Dulles Intl

ven. 6/6

3:13 pm-3:03 pm

2 stops23h 50m

$396

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

mar. 5/20

8:45 am-8:57 pm

1 stop12h 12m

$196

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

mar. 5/20

6:25 pm-11:35 pm

1 stop5h 10m

$254

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

lun. 5/26

10:23 am-11:26 am

2 stops25h 03m

$259

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

ven. 6/27

7:32 pm-10:48 am

2 stops15h 16m

$311

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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.

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.

Cheapflights Insights

Everything you need to know about your flight from Key West to Washington, D.C. Dulles Intl Airport

Rainfall in Dulles Intl by month

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.

Temperature in Dulles Intl by month

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).

Reviews of airlines servicing Dulles Intl

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

2.0

Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta

8.0

Very good

7,929 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

2.0

Mediocre

Santiago,Apr 2024

MCO - ATL

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

2.0

Mediocre

Santiago,Apr 2024

MCO - ATL

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

2.0

Mediocre

Santiago,Apr 2024

MCO - ATL

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 1 airline. Key West is conveniently located just 2.6 mi from Key West’s city center.
What are the cheapest airlines flying from Key West to Washington, D.C. Dulles Intl Airport round-trip?
According to our current data, Delta ($239), American Airlines ($334), and United Airlines ($381) offers the cheapest pricing from Key West to Washington, D.C. Dulles Intl Airport.
What are the cheapest airlines to fly from Key West to Washington, D.C. Dulles Intl Airport one-way?
One-way options have recently been found by users for as low as $196 on United Airlines. Other airlines that offer cheap prices include Delta from $254 and American Airlines from $311 one-way.
What are the cheapest flights from Key West to Washington, D.C. Dulles Intl Airport?
Looking at all options, your cheapest flight can be booked for $368. While the most popular route (Key West - Washington, D.C. Dulles Intl) can be booked for $239 on average our data indicates $588 when flying 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?
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.
What is the cheapest month to book a flight from Key West to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Key West to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Key West to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Key West to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$223	Average$358	FlexibilityNo cancel fee	On-timeN/A

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$196+ 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 5/20. 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

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good one-way deal

Find 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 avril 29, 2025.

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 avril 29, 2025.

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.

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.

Cheapflights Insights

Everything you need to know about your flight from Key West to Washington, D.C. Dulles Intl Airport

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Dulles Intl

Related info for your journey

Find useful and relevant information for your journey from Key West to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

What are the cheapest airlines flying from Key West to Washington, D.C. Dulles Intl Airport round-trip?

What are the cheapest airlines to fly from Key West to Washington, D.C. Dulles Intl Airport one-way?

What are the cheapest flights 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?

What is the cheapest month to book a flight from Key West to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Key West?

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Alternative routes for Key West to Dulles Intl

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Top airline flying from Key West to Dulles Intl

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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 avril 29, 2025.