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Dulles Intl

$61+ Cheap flights from Florida Keys 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — IAD
Apr 30 — May 71
Wed 4/30
Wed 5/7
1 adult, Economy
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Cheap flight deals from Florida Keys to Dulles Intl

Keep the following information in mind while searching for Florida Keys to Dulles Intl flight deals. Data was last updated April 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$96
(Cheapflightsfares)

One-way from

$61
(Trip.com)

Popular in

March

Cheapest in

December

Average price

$547
Provider with most accurate pricing for Key West-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Key West-Washington, D.C. (WAS) flights.
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From Florida Keys to Washington, D.C. Dulles Intl
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One-way flight from Florida Keys to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 22% potential increase in price ($125 potential increase over avg. RT price).
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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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Find flight deals from Florida Keys to Dulles Intl

Cheapest flights from Florida Keys to Dulles Intl
Explore the most affordable flight options available from Florida Keys to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2025.

This Frontier deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/72:04 pmMIA - IAD
Nonstop2h 40mFrontier
Sun 6/87:04 pmIAD - MIA
Nonstop2h 40mFrontier
Deal found 4/24$94
This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/81:29 pmMIA - IAD
Nonstop2h 41mUnited Airlines
Sun 5/118:20 amIAD - MIA
Nonstop2h 51mUnited Airlines
Deal found 4/24$187
This American Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/75:18 amMIA - IAD
1 stop7h 20mAmerican Airlines
Sat 6/215:41 pmIAD - MIA
1 stop4h 41mAmerican Airlines
Deal found 4/25$251
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/307:40 pmMIA - IAD
1 stop16h 00mDelta
Tue 6/38:33 pmIAD - MIA
1 stop17h 37mDelta
Deal found 4/25$265
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:25 pmEYW - IAD
1 stop6h 03mDelta
Mon 6/212:39 pmIAD - EYW
1 stop7h 28mDelta
Deal found 4/24$284
This American Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/141:39 pmEYW - IAD
2 stops10h 23mAmerican Airlines
Tue 5/205:02 amIAD - EYW
1 stop7h 08mAmerican Airlines
Deal found 4/25$354
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/278:45 amEYW - IAD
1 stop26h 29mUnited Airlines
Thu 5/296:50 pmIAD - EYW
1 stop23h 15mUnited Airlines
Deal found 4/25$381

Cheapflights Fare Finder

Customize your flight search to find flights from Florida Keys to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 25, 2025.
Use the filters below to find and compare flights from Florida Keys to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Florida Keys

Fly to

Dulles Intl

Route

Depart

Return

Price

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Sat 6/7

2:04 pm-4:44 pm

Nonstop2h 40m

Washington, D.C. Dulles Intl

Sun 6/8

7:04 pm-9:44 pm

Nonstop2h 40m

$94

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Thu 5/8

1:29 pm-4:10 pm

Nonstop2h 41m

Washington, D.C. Dulles Intl

Sun 5/11

8:20 am-11:11 am

Nonstop2h 51m

$187

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Thu 5/8

5:05 pm-12:02 am

1 stop6h 57m

Washington, D.C. Dulles Intl

Sun 5/11

5:02 am-9:14 am

1 stop4h 12m

$255

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Fri 5/30

7:40 pm-11:40 am

1 stop16h 00m

Washington, D.C. Dulles Intl

Tue 6/3

8:33 pm-2:10 pm

1 stop17h 37m

$265

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 5/29

6:25 pm-12:28 am

1 stop6h 03m

Washington, D.C. Dulles Intl

Tue 6/3

10:09 am-5:12 pm

1 stop7h 03m

$284

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Wed 5/14

1:39 pm-12:02 am

2 stops10h 23m

Washington, D.C. Dulles Intl

Tue 5/20

5:02 am-12:10 pm

1 stop7h 08m

$354

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Tue 5/27

8:45 am-11:14 am

1 stop26h 29m

Washington, D.C. Dulles Intl

Thu 5/29

6:50 pm-6:05 pm

1 stop23h 15m

$381

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Sat 5/10

9:33 am-4:34 pm

1 stop7h 01m

$61

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Tue 7/1

1:30 pm-4:10 pm

Nonstop2h 40m

$90

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Sat 7/12

6:17 am-10:37 am

1 stop4h 20m

$126

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 17 results
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Best time to book a flight from Florida Keys to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Florida Keys 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 Florida Keys 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.

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

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

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated April 25, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from Florida Keys to Washington, D.C. by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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.
United Airlines
7.4
Good
8,685 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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.
Sun Country Air
6.9
Okay
347 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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.
Frontier
6.0
Okay
3,284 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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.

Related info for your journey

Find useful and relevant information for your journey from Florida Keys 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 are the cheapest airlines to fly from Florida Keys to Washington, D.C. Dulles Intl Airport one-way?

    $61 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $90 and $126, respectively.

  • What are the cheapest flights from Florida Keys to Washington, D.C. Dulles Intl Airport?

    Looking for the cheapest flight from Florida Keys to Washington, D.C. Dulles Intl Airport? While on average our users pay $499, our data indicates the cheapest price to be $205. The most popular route (Miami - Washington, D.C. Dulles Intl), is priced around $85.

  • Can I find deals for flights from Florida Keys to Dulles Intl that include hotel bookings?

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

  • How can I find direct flights from Florida Keys to Dulles Intl?

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

  • Can I find deals for business class flights from Florida Keys to Dulles Intl?

    Yes. Cheapflights offers flight deals from Florida Keys 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 Florida Keys to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Florida Keys to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Florida Keys to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $383). 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

Traveling to a place near Florida Keys?

Book flights to Florida Keys if you plan to visit one of these locations
Arlington
Alexandria
Woodbridge
Fairfax
Tysons
Springfield
Rockville
Fredericksburg
Gaithersburg
Silver Spring
Linthicum Heights
Falls Church
Laurel
Easton
Herndon
Sterling
Bowie
Towson
National Harbor
Oxon Hill

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Alternative routes for Florida Keys to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Valdosta to Baltimore flights

Top airline flying from Florida Keys to Dulles Intl

Discover the top airline that operate flights from Florida Keys to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$223Average$358FlexibilityNo cancel feeOn-timeN/A

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