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

$58 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 $84 and $126, respectively.

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 $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 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 $588, our data indicates the cheapest price to be $588. The most popular route (Miami - Washington, D.C. Dulles Intl), is priced around $98.

How far in advance should I book a flight from Florida Keys to Washington, D.C. Dulles Intl Airport?

Travelers have found it’s best to book a flight 45 days in advance to save up to 109% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 45 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Florida Keys to Washington, D.C. Dulles Intl Airport 1-2 weeks in advance for as low as $148, or $280 for flights within the next 24 hours.

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

Our data shows that February tends to be the cheapest month to fly to Washington, D.C. Dulles Intl Airport from Florida Keys. Users have commonly found prices around $178 for the month, but tickets can be as low as $49. Due to multiple factors, prepare for potentially higher prices in December.

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

When flying from Florida Keys 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.

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.

$58+ Flights from Florida Keys to Washington, D.C. Dulles Intl Airport - Compare & Save Big

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Cheap flight deals from Florida Keys to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	Expedia 3 stars
Round-trip from	$98 (Frontier)
One-way from	$58 (Frontier)
Popular in	March
Cheapest in	December
Average price	$538

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 ($122 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 May 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 May 6, 2025.

Thu 5/2912:12 pmMIA - IAD

Nonstop2h 41mFrontier

Mon 6/23:45 pmIAD - MIA

Nonstop2h 40mFrontier

Deal found 5/6

$97

Tue 5/201:29 pmMIA - IAD

Nonstop2h 41mUnited Airlines

Tue 6/108:55 amIAD - MIA

Nonstop2h 49mUnited Airlines

Deal found 5/6

$167

Mon 7/216:00 amMIA - IAD

1 stop18h 12mMultiple Airlines

Fri 7/253:13 pmIAD - MIA

1 stop8h 46mMultiple Airlines

Deal found 5/6

$186

Wed 7/27:00 pmMIA - IAD

1 stop4h 59mAmerican Airlines

Sat 7/121:19 pmIAD - MIA

1 stop7h 31mAmerican Airlines

Deal found 5/6

$251

Wed 5/216:25 pmEYW - IAD

1 stop5h 10mDelta

Sun 5/253:37 pmIAD - EYW

1 stop4h 30mDelta

Deal found 5/5

$264

Thu 7/102:45 pmEYW - IAD

1 stop20h 35mUnited Airlines

Sat 7/1210:10 pmIAD - EYW

1 stop15h 50mUnited Airlines

Deal found 5/5

$303

Fri 7/412:39 pmEYW - IAD

1 stop5h 33mAmerican Airlines

Tue 7/159:03 amIAD - EYW

1 stop5h 06mAmerican Airlines

Deal found 5/5

$334

Best flights from Florida Keys to Dulles Intl
Discover carefully curated flight deals from Florida Keys to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 6, 2025.

Wed 5/2812:17 pmMIA - IAD

Nonstop2h 41mFrontier

Sun 6/87:04 pmIAD - MIA

Nonstop2h 40mFrontier

Deal found 5/5

$98

Tue 5/201:29 pmMIA - IAD

Nonstop2h 41mUnited Airlines

Tue 6/108:55 amIAD - MIA

Nonstop2h 49mUnited Airlines

Deal found 5/6

$167

Wed 5/2811:45 amMIA - IAD

1 stop5h 11mAmerican Airlines

Sat 5/315:26 pmIAD - MIA

1 stop7h 08mAmerican Airlines

Deal found 5/5

$251

Wed 5/216:25 pmEYW - IAD

1 stop5h 10mDelta

Sun 5/253:37 pmIAD - EYW

1 stop4h 30mDelta

Deal found 5/5

$264

Thu 7/102:45 pmEYW - IAD

1 stop20h 35mUnited Airlines

Sat 7/1210:10 pmIAD - EYW

1 stop15h 50mUnited Airlines

Deal found 5/5

$303

Fri 7/412:39 pmEYW - IAD

1 stop5h 33mAmerican Airlines

Tue 7/159:03 amIAD - EYW

1 stop5h 06mAmerican Airlines

Deal found 5/5

$334

Last-minute flights from Florida Keys to Dulles Intl
Discover last-minute flight deals from Florida Keys to Dulles Intl. Data last updated May 6, 2025 and is based on user searches.

Mon 5/127:20 pmMIA - IAD

1 stop4h 42mAmerican Airlines

Fri 5/168:02 pmIAD - MIA

1 stop4h 32mAmerican Airlines

Deal found 5/4

$255

Thu 5/158:46 amMIA - IAD

1 stop5h 37mFrontier

Thu 5/223:38 pmIAD - MIA

Nonstop2h 48mFrontier

Deal found 5/5

$278

Thu 5/1512:28 pmMIA - IAD

2 stops32h 29mMultiple Airlines

Sun 5/1812:55 pmIAD - MIA

3 stops31h 03mMultiple Airlines

Deal found 5/4

$331

Fri 5/161:29 pmMIA - IAD

Nonstop2h 41mUnited Airlines

Mon 5/198:20 amIAD - MIA

Nonstop2h 51mUnited Airlines

Deal found 5/5

$249

Fri 5/167:00 amMIA - IAD

1 stop4h 58mDelta

Sun 5/185:40 pmIAD - MIA

1 stop4h 54mDelta

Deal found 5/5

$401

Tue 5/201:29 pmMIA - IAD

Nonstop2h 41mUnited Airlines

Tue 6/108:55 amIAD - MIA

Nonstop2h 49mUnited Airlines

Deal found 5/6

$167

Wed 5/216:25 pmEYW - IAD

1 stop5h 10mDelta

Sun 5/253:37 pmIAD - EYW

1 stop4h 30mDelta

Deal found 5/5

$264

Tue 5/278:45 amEYW - IAD

1 stop26h 29mUnited Airlines

Thu 5/298:24 amIAD - EYW

1 stop9h 41mUnited Airlines

Deal found 5/6

$376

Wed 5/2812:17 pmMIA - IAD

Nonstop2h 41mFrontier

Sun 6/87:04 pmIAD - MIA

Nonstop2h 40mFrontier

Deal found 5/5

$98

Wed 5/2811:45 amMIA - IAD

1 stop5h 11mAmerican Airlines

Sat 5/315:26 pmIAD - MIA

1 stop7h 08mAmerican Airlines

Deal found 5/5

$251

Wed 6/113:02 pmEYW - IAD

1 stop4h 42mAmerican Airlines

Tue 6/179:10 amIAD - EYW

2 stops9h 52mAmerican Airlines

Deal found 5/6

$354

One-way flights from Florida Keys to Dulles Intl
Search for one-way flight options from Florida Keys to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated May 6, 2025.

Thu 6/123:50 pmMIA - IAD

Nonstop2h 40mFrontier

Deal found 5/6

$58

Tue 6/31:21 pmMIA - IAD

Nonstop2h 40mUnited Airlines

Deal found 5/6

$84

Wed 6/117:56 pmMIA - IAD

2 stops15h 06mMultiple Airlines

Deal found 5/6

$112

Sat 7/266:17 amMIA - IAD

1 stop6h 32mAmerican Airlines

Deal found 5/6

$126

Fri 6/67:15 amMIA - IAD

1 stop12h 24mDelta

Deal found 5/5

$138

Sun 7/204:20 pmEYW - IAD

1 stop17h 03mAllegiant Air

Deal found 5/5

$156

Wed 6/256:45 pmEYW - IAD

1 stop16h 35mUnited Airlines

Deal found 5/5

$187

Sun 6/222:08 pmMIA - IAD

1 stop22h 11mSun Country Air

Deal found 5/6

$187

Sun 7/208:54 amEYW - IAD

3 stops26h 26mMultiple Airlines

Deal found 5/5

$237

Fri 6/2711:48 amEYW - IAD

1 stop4h 45mDelta

Deal found 5/5

$264

Fri 6/277:32 pmEYW - IAD

2 stops15h 16mAmerican Airlines

Deal found 5/5

$311

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Thu 5/29

12:12 pm-2:53 pm

Nonstop2h 41m

Washington, D.C. Dulles Intl

Mon 6/2

3:45 pm-6:25 pm

Nonstop2h 40m

$97

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Tue 5/20

1:29 pm-4:10 pm

Nonstop2h 41m

Washington, D.C. Dulles Intl

Tue 6/10

8:55 am-11:44 am

Nonstop2h 49m

$167

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Mon 7/21

6:00 am-12:12 am

1 stop18h 12m

Washington, D.C. Dulles Intl

Fri 7/25

3:13 pm-11:59 pm

1 stop8h 46m

$186

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Wed 7/2

11:52 am-5:11 pm

1 stop5h 19m

Washington, D.C. Dulles Intl

Wed 7/9

1:19 pm-8:50 pm

1 stop7h 31m

$251

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Wed 5/21

6:25 pm-11:35 pm

1 stop5h 10m

Washington, D.C. Dulles Intl

Sun 5/25

3:37 pm-8:07 pm

1 stop4h 30m

$264

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 7/10

2:45 pm-11:20 am

1 stop20h 35m

Washington, D.C. Dulles Intl

Sat 7/12

10:10 pm-2:00 pm

1 stop15h 50m

$303

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Fri 7/4

12:39 pm-6:12 pm

1 stop5h 33m

Washington, D.C. Dulles Intl

Tue 7/15

9:03 am-2:09 pm

1 stop5h 06m

$334

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Thu 6/12

3:50 pm-6:30 pm

Nonstop2h 40m

$58

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Tue 6/3

1:21 pm-4:01 pm

Nonstop2h 40m

$84

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Wed 6/11

7:56 pm-11:02 am

2 stops15h 06m

$112

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

Showing 1-10 of 18 results

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

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

Get a feel of what it's like to fly with Delta, United Airlines and Allegiant Air 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

7,944 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

7,944 reviews

Delta

8.0

Very good

7,944 reviews

Reviews

1 / 20

6.0

Good

pilar,May 2025

RSW - ATL

United Airlines

7.4

Good

8,708 reviews

Delta

8.0

Very good

7,944 reviews

Reviews

1 / 20

6.0

Good

pilar,May 2025

RSW - ATL

Allegiant Air

7.3

Good

734 reviews

Delta

8.0

Very good

7,944 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

7,944 reviews

Reviews

1 / 20

6.0

Good

pilar,May 2025

RSW - ATL

Sun Country Air

6.9

Okay

346 reviews

Delta

8.0

Very good

7,944 reviews

Reviews

1 / 20

6.0

Good

pilar,May 2025

RSW - ATL

Related info for your journey

What are the cheapest airlines to fly from Florida Keys to Washington, D.C. Dulles Intl Airport one-way?
$58 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 $84 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 $588, our data indicates the cheapest price to be $588. The most popular route (Miami - Washington, D.C. Dulles Intl), is priced around $98.
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 $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

Alexandria

Arlington

Woodbridge

Tysons

Springfield

Fairfax

Rockville

Fredericksburg

Silver Spring

Linthicum Heights

Gaithersburg

Falls Church

Laurel

Easton

Towson

Herndon

Sterling

Bowie

National Harbor

Oxon Hill

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Florida Keys to Dulles Intl

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

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$58+ 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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Florida Keys to Dulles Intl with Cheapflights

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3. Compare prices and book

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 May 6, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Florida Keys to Dulles Intl

Cheapest flights from Florida Keys to Dulles IntlExplore 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 May 6, 2025.

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 May 6, 2025.

Cheapflights Fare Finder

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

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.

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.

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 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?

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

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

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

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

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

Traveling to a place near Florida Keys?

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.

Top airline flying from Florida Keys to Dulles Intl

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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 May 6, 2025.