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Dulles Intl

$52+ 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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — IAD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This CheapOair deal was found by Cheapflights users on 12/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:30 amMIA - IAD
Nonstop2h 39mFrontier
Fri 1/22:09 pmIAD - MIA
Nonstop2h 45mFrontier
Deal found 12/11$84
This Frontier deal was found by Cheapflights users on 12/11. 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.
Fri 12/2610:35 amMIA - IAD
Nonstop2h 39mFrontier
Fri 1/22:09 pmIAD - MIA
Nonstop2h 45mFrontier
Deal found 12/11$98
This Super.com deal was found by Cheapflights users on 12/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:30 amMIA - IAD
Nonstop2h 39mFrontier
Sat 1/311:04 amIAD - MIA
Nonstop2h 45mFrontier
Deal found 12/11$116
This CheapOair deal was found by Cheapflights users on 12/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1910:35 amMIA - IAD
Nonstop2h 39mFrontier
Wed 12/317:01 pmIAD - MIA
1 stop5h 46mFrontier
Deal found 12/11$123
This Frontier deal was found by Cheapflights users on 12/11. 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.
Mon 12/2210:35 amMIA - IAD
Nonstop2h 39mFrontier
Fri 1/22:09 pmIAD - MIA
Nonstop2h 45mFrontier
Deal found 12/11$127
This Super.com deal was found by Cheapflights users on 12/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:35 amMIA - IAD
Nonstop2h 39mFrontier
Tue 12/308:15 pmIAD - MIA
1 stop9h 45mFrontier
Deal found 12/11$130
This Frontier deal was found by Cheapflights users on 12/11. 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.
Fri 12/2610:35 amMIA - IAD
Nonstop2h 39mFrontier
Wed 12/317:01 pmIAD - MIA
1 stop5h 46mFrontier
Deal found 12/11$131
This CheapOair deal was found by Cheapflights users on 12/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:26 pmMIA - IAD
Nonstop2h 39mFrontier
Sun 12/1412:04 pmIAD - MIA
Nonstop2h 45mFrontier
Deal found 12/11$143
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:35 amMIA - IAD
Nonstop2h 39mMultiple Airlines
Fri 1/26:05 amIAD - MIA
1 stop7h 01mMultiple Airlines
Deal found 12/10$150
This Super.com deal was found by Cheapflights users on 12/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:35 amMIA - IAD
Nonstop2h 39mFrontier
Mon 12/298:26 pmIAD - MIA
1 stop9h 34mFrontier
Deal found 12/11$151
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/219:59 amEYW - IAD
1 stop27h 43mAllegiant Air
Mon 12/293:51 pmIAD - EYW
1 stop16h 48mAllegiant Air
Deal found 12/10$254
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:55 amEYW - IAD
2 stops26h 43mMultiple Airlines
Mon 12/293:51 pmIAD - EYW
1 stop16h 48mMultiple Airlines
Deal found 12/10$317

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$69
(Super.com)

One-way from

$52
(Trip.com)

Popular in

March

Cheapest in

September

Average price

$449
Provider with most accurate pricing for Key West-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Key West-Washington, D.C. (WAS) flights.
Search Deals
From Florida Keys to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Florida Keys to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($127 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 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

Thu 1/8

6:25 pm-9:11 pm

Nonstop2h 46m

Washington, D.C. Dulles Intl

Mon 1/12

1:20 pm-4:22 pm

Nonstop3h 02m

$131

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Fri 1/9

6:25 pm-9:11 pm

Nonstop2h 46m

Washington, D.C. Dulles Intl

Sun 1/11

1:20 pm-4:22 pm

Nonstop3h 02m

$142

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Thu 2/5

7:15 am-2:45 pm

1 stop7h 30m

Washington, D.C. Dulles Intl

Sun 2/8

6:00 am-10:40 am

1 stop4h 40m

$151

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Wed 1/7

7:15 am-1:59 pm

1 stop6h 44m

Washington, D.C. Dulles Intl

Sun 1/11

6:20 am-12:14 pm

1 stop5h 54m

$151

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Wed 1/7

8:05 am-4:46 pm

1 stop8h 41m

Washington, D.C. Dulles Intl

Wed 1/14

12:09 pm-7:46 pm

1 stop7h 37m

$151

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Sat 2/7

8:05 am-4:46 pm

1 stop8h 41m

Washington, D.C. Dulles Intl

Tue 2/10

12:40 pm-5:15 pm

1 stop4h 35m

$159

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Fri 2/13

6:35 pm-9:25 pm

Nonstop2h 50m

Washington, D.C. Dulles Intl

Sun 2/15

1:20 pm-4:21 pm

Nonstop3h 01m

$177

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Wed 12/24

4:48 pm-11:06 pm

1 stop6h 18m

Washington, D.C. Dulles Intl

Wed 12/31

5:10 pm-8:11 pm

Nonstop3h 01m

$182

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Fri 1/9

6:25 pm-9:11 pm

Nonstop2h 46m

Washington, D.C. Dulles Intl

Tue 1/13

1:20 pm-4:22 pm

Nonstop3h 02m

$201

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Wed 1/28

1:45 pm-4:25 pm

Nonstop2h 40m

Washington, D.C. Dulles Intl

Mon 2/2

8:15 am-11:16 am

Nonstop3h 01m

$201

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 38 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
No data available for this route at this time. Please check back soon.

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 December 12, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Florida Keys to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

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
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

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.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

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.
American Airlines
7.2
Good
11,050 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

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.
Frontier
5.8
Fair
3,084 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

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.

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.

  • How long is the flight from Florida Keys to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from Florida Keys to Washington, D.C. Dulles Intl Airport in 2h 46m. Fly via United Airlines or Delta to get the fastest option. Florida Keys and Washington, D.C. Dulles Intl Airport are separated by a distance of 923 mi. This flight may include one or multiple stops.

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

    $34 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and JetBlue, with prices starting from $46 and $63, 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 $1,264, our data indicates the cheapest price to be $138. The most popular route (Miami - Washington, D.C. Dulles Intl), is priced around $49.

  • 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.

See more FAQs

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Rockville
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton

Browse thousands of different options on Cheapflights for your next trip

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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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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$223Average$268FlexibilityNo cancel feeOn-timeN/A

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