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

According to our current data, Delta ($269), American Airlines ($353), and United Airlines ($509) offers the cheapest pricing from Key West to Washington, D.C. Dulles Intl Airport.

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 July is currently the most expensive (average of $345). 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.

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 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 $588. While the most popular route (Key West - Washington, D.C. Dulles Intl) can be booked for $269 on average our data indicates $588 when flying from Key West to Washington, D.C. Dulles Intl Airport.

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 September, with the cheapest ticket starting at $243.

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.

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.

$269+ Flights from Key West to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Key West to Dulles Intl

Round-trip from	$269 (Delta)
Popular in	March
Cheapest in	September
Average price	$363
Good one-way deal	$588 or less

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

Search Deals

Highest demand for flights based on searches. 26% potential increase in price ($143 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease ($30 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 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 June 30, 2025.

Fri 9/126:10 pmEYW - IAD

1 stop6h 03mDelta

Tue 9/1610:07 amIAD - EYW

1 stop7h 08mDelta

Deal found 6/30

$269

Thu 7/241:25 pmEYW - IAD

2 stops10h 33mAmerican Airlines

Wed 7/306:35 amIAD - EYW

1 stop5h 25mAmerican Airlines

Deal found 6/28

$353

Tue 7/222:12 pmEYW - IAD

1 stop7h 08mUnited Airlines

Thu 7/246:15 amIAD - EYW

1 stop6h 57mUnited Airlines

Deal found 6/29

$509

Thu 7/311:47 pmEYW - IAD

3 stops21h 33mMultiple Airlines

Tue 8/55:40 pmIAD - EYW

3 stops21h 30mMultiple Airlines

Deal found 6/30

$529

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 June 30, 2025.

Fri 9/126:10 pmEYW - IAD

1 stop6h 03mDelta

Tue 9/1610:07 amIAD - EYW

1 stop7h 08mDelta

Deal found 6/30

$269

Thu 7/241:25 pmEYW - IAD

2 stops10h 33mAmerican Airlines

Wed 7/306:35 amIAD - EYW

1 stop5h 25mAmerican Airlines

Deal found 6/28

$353

Tue 7/222:12 pmEYW - IAD

1 stop7h 08mUnited Airlines

Thu 7/246:15 amIAD - EYW

1 stop6h 57mUnited Airlines

Deal found 6/29

$509

Thu 7/311:47 pmEYW - IAD

3 stops21h 33mMultiple Airlines

Tue 8/55:40 pmIAD - EYW

3 stops21h 30mMultiple Airlines

Deal found 6/30

$529

Last-minute flights from Key West to Dulles Intl
Discover last-minute flight deals from Key West to Dulles Intl. Data last updated June 30, 2025 and is based on user searches.

Tue 7/222:12 pmEYW - IAD

1 stop7h 08mUnited Airlines

Thu 7/246:15 amIAD - EYW

1 stop6h 57mUnited Airlines

Deal found 6/29

$509

Thu 7/241:25 pmEYW - IAD

2 stops10h 33mAmerican Airlines

Wed 7/306:35 amIAD - EYW

1 stop5h 25mAmerican Airlines

Deal found 6/28

$353

Thu 7/317:00 amEYW - IAD

1 stop7h 42mDelta

Tue 8/512:45 pmIAD - EYW

1 stop7h 04mDelta

Deal found 6/30

$269

Thu 7/311:47 pmEYW - IAD

3 stops21h 33mMultiple Airlines

Tue 8/55:40 pmIAD - EYW

3 stops21h 30mMultiple Airlines

Deal found 6/30

$529

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 June 30, 2025.

Mon 7/142:12 pmEYW - IAD

1 stop8h 15mUnited Airlines

Deal found 6/30

$329

Mon 7/1410:02 amEYW - IAD

2 stops26h 29mMultiple Airlines

Deal found 6/30

$352

Thu 9/252:00 pmEYW - IAD

1 stop4h 24mDelta

Deal found 6/28

$495

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

Fri 9/12

6:10 pm-12:13 am

1 stop6h 03m

Washington, D.C. Dulles Intl

Tue 9/16

10:07 am-5:15 pm

1 stop7h 08m

$269

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 7/24

1:25 pm-11:58 pm

2 stops10h 33m

Washington, D.C. Dulles Intl

Wed 7/30

6:35 am-12:00 pm

1 stop5h 25m

$353

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Tue 7/22

2:12 pm-9:20 pm

1 stop7h 08m

Washington, D.C. Dulles Intl

Thu 7/24

6:15 am-1:12 pm

1 stop6h 57m

$509

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 7/31

1:47 pm-11:20 am

3 stops21h 33m

Washington, D.C. Dulles Intl

Tue 8/5

5:40 pm-3:10 pm

3 stops21h 30m

$529

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Mon 7/14

2:12 pm-10:27 pm

1 stop8h 15m

$329

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Mon 7/14

10:02 am-12:31 pm

2 stops26h 29m

$352

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 9/25

2:00 pm-6:24 pm

1 stop4h 24m

$495

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Sun 11/30

7:33 pm-10:29 am

2 stops14h 56m

$722

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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.

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Key West to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

6.0

Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.

Delta

8.0

Very good

7,973 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

6.0

Good

pilar,May 2025

RSW - ATL

United Airlines

7.4

Good

8,852 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

6.0

Good

pilar,May 2025

RSW - ATL

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

6.0

Good

pilar,May 2025

RSW - 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 ($269), American Airlines ($353), and United Airlines ($509) offers the cheapest pricing from Key West to Washington, D.C. Dulles Intl Airport.
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 $588. While the most popular route (Key West - Washington, D.C. Dulles Intl) can be booked for $269 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 July is currently the most expensive (average of $345). 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$293	FlexibilityNo cancel fee	On-timeN/A

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$269+ Cheap flights from Key West (EYW) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. 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

Round-trip 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 June 30, 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 June 30, 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.

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 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

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

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 June 30, 2025.