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

One-way options have recently been found by users for as low as $244 on Delta. Other airlines that offer cheap prices include American Airlines from $259 and United Airlines from $280 one-way.

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

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

In terms of precipitation, rainfall in Key West ranges from 1.5 - 6.7 inches per month. September is typically the wettest month, when rainfall can reach 6.7 in. February is typically the driest time to visit Key West when rainfall is around 1.5 in.

If weather is an important factor for your trip to Key West, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Key West?

American Airlines, Delta and United Airlines are the most popular airlines when flying from Washington, D.C. Dulles Intl Airport to Key West.

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

Flying to your destination on a Sunday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Key West. Check prices with Cheapflights to find a great deal for your trip.

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

January is one of the best times of the year to fly to Key West from Washington, D.C. Dulles Intl Airport. Prices for January average $455 per person but you can even find prices for as low as $179. The most expensive prices can be found in the month of April. Opting for a January flight can save you 12% on your journey compared to booking in April

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

Key West (EYW) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Key West. You should not have trouble finding flights to Key West from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Key West airport from Washington, D.C. Dulles Intl. It is only a 2.6 mi journey from Key West (EYW) to Key West’s city center.

Can I find deals for flights from Dulles Intl to Key West that include hotel bookings?

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

How can I find direct flights from Dulles Intl to Key West?

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

Can I find deals for business class flights from Dulles Intl to Key West?

Yes. Cheapflights offers flight deals from Dulles Intl to Key West by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$198+ Flights from Washington, D.C. Dulles Intl Airport to Key West

Q: How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Key West?

Travelers have found it’s best to book a flight 51 days in advance to save up to 65% 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 51 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 Washington, D.C. Dulles Intl Airport to Key West 1-2 weeks in advance for as low as $359, or $539 for flights within the next 24 hours.

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Find cheap flights from Dulles Intl to Key West with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Key West are usually found in July or June, booked 51 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from Dulles Intl to Key West

Round-trip from	$264 (Delta)
One-way from	$198 (Mytrip)
Popular in	December
Cheapest in	July
Average price	$398

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

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

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Highest demand for flights based on searches. 9% potential increase in price ($49 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Dulles Intl to Key West

Cheapest flights from Dulles Intl to Key West
Explore the most affordable flight options available from Dulles Intl to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2025.

Tue 8/512:45 pmIAD - EYW

1 stop7h 04mDelta

Wed 8/137:00 amEYW - IAD

1 stop4h 44mDelta

Deal found 7/21

$264

Fri 10/178:25 amIAD - EYW

2 stops11h 30mMultiple Airlines

Mon 10/209:50 amEYW - IAD

1 stop10h 56mMultiple Airlines

Deal found 7/21

$269

Mon 12/16:00 amIAD - EYW

1 stop8h 09mUnited Airlines

Fri 12/123:02 pmEYW - IAD

1 stop8h 19mUnited Airlines

Deal found 7/21

$293

Fri 10/318:09 amIAD - EYW

1 stop4h 59mAmerican Airlines

Mon 11/37:31 amEYW - IAD

1 stop6h 04mAmerican Airlines

Deal found 7/21

$349

Best flights from Dulles Intl to Key West
Discover carefully curated flight deals from Dulles Intl to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2025.

Tue 8/512:45 pmIAD - EYW

1 stop7h 04mDelta

Wed 8/137:00 amEYW - IAD

1 stop4h 44mDelta

Deal found 7/21

$264

Fri 10/178:25 amIAD - EYW

2 stops11h 30mMultiple Airlines

Mon 10/209:50 amEYW - IAD

1 stop10h 56mMultiple Airlines

Deal found 7/21

$269

Mon 12/16:00 amIAD - EYW

1 stop8h 09mUnited Airlines

Fri 12/123:02 pmEYW - IAD

1 stop8h 19mUnited Airlines

Deal found 7/21

$293

Fri 10/318:09 amIAD - EYW

1 stop4h 59mAmerican Airlines

Mon 11/37:31 amEYW - IAD

1 stop6h 04mAmerican Airlines

Deal found 7/21

$349

Last-minute flights from Dulles Intl to Key West
Discover last-minute flight deals from Dulles Intl to Key West. Data last updated July 23, 2025 and is based on user searches.

Tue 7/299:03 amIAD - EYW

1 stop7h 15mAmerican Airlines

Tue 8/54:48 pmEYW - IAD

1 stop7h 10mAmerican Airlines

Deal found 7/22

$379

Wed 7/306:00 amIAD - EYW

1 stop4h 51mDelta

Thu 8/76:00 pmEYW - IAD

1 stop6h 34mDelta

Deal found 7/21

$324

Sat 8/28:20 amIAD - EYW

2 stops28h 21mUnited Airlines

Mon 8/42:22 pmEYW - IAD

1 stop8h 05mUnited Airlines

Deal found 7/21

$493

Tue 8/512:45 pmIAD - EYW

1 stop7h 04mDelta

Wed 8/137:00 amEYW - IAD

1 stop4h 44mDelta

Deal found 7/21

$264

Wed 8/610:25 amIAD - EYW

1 stop6h 21mAmerican Airlines

Tue 9/3012:00 pmEYW - IAD

1 stop6h 51mAmerican Airlines

Deal found 7/22

$359

Sun 8/241:05 pmIAD - EYW

2 stops27h 46mMultiple Airlines

Thu 8/288:53 amEYW - IAD

3 stops26h 27mMultiple Airlines

Deal found 7/21

$366

Wed 8/278:40 amIAD - EYW

1 stop5h 45mUnited Airlines

Sat 8/303:15 pmEYW - IAD

1 stop5h 26mUnited Airlines

Deal found 7/21

$305

One-way flights from Dulles Intl to Key West
Search for one-way flight options from Dulles Intl to Key West. Find affordable one-way fares based on user searches. Data last updated July 23, 2025.

Tue 8/55:40 pmIAD - EYW

3 stops21h 30mMultiple Airlines

Deal found 7/21

$198

Tue 8/266:00 amIAD - EYW

1 stop4h 56mDelta

Deal found 7/22

$244

Mon 8/117:44 amIAD - EYW

1 stop4h 48mAmerican Airlines

Deal found 7/20

$259

Mon 9/2212:45 pmIAD - EYW

2 stops25h 16mUnited Airlines

Deal found 7/21

$280

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Tue 8/5

12:45 pm-7:49 pm

1 stop7h 04m

Key West

Wed 8/13

7:00 am-11:44 am

1 stop4h 44m

$264

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Fri 10/17

8:25 am-7:55 pm

2 stops11h 30m

Key West

Mon 10/20

9:50 am-8:46 pm

1 stop10h 56m

$269

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Wed 8/27

8:40 am-2:25 pm

1 stop5h 45m

Key West

Sat 8/30

3:15 pm-8:41 pm

1 stop5h 26m

$305

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 10/11

6:34 am-12:07 pm

1 stop5h 33m

Key West

Sat 10/18

12:50 pm-7:45 pm

1 stop6h 55m

$359

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Tue 8/5

5:40 pm-3:10 pm

3 stops21h 30m

$198

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Tue 8/26

6:00 am-10:56 am

1 stop4h 56m

$244

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 8/11

7:44 am-12:32 pm

1 stop4h 48m

$259

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 9/22

12:45 pm-2:01 pm

2 stops25h 16m

$280

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/21

Best time to book a flight from Dulles Intl to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Key West

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Key West?

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Key West may vary depending on when you book. For the best chance of a lower fare, look to book 50 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Key West (average of $328). Flying from Washington, D.C. Dulles Intl Airport to Key West in March is currently the most expensive (average of $492). 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 time of day to fly from IAD to EYW?

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Key West in the afternoon. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight in the morning.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Key West?

Reviews of airlines servicing Key West

Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Key West, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,967 reviews

Reviews

1 / 20

2.0

Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Delta

8.0

Very good

7,967 reviews

Delta

8.0

Very good

7,967 reviews

Reviews

1 / 20

2.0

Mediocre

Joseph,Aug 2023

MSP - MCO

United Airlines

7.4

Good

8,873 reviews

Delta

8.0

Very good

7,967 reviews

Reviews

1 / 20

2.0

Mediocre

Joseph,Aug 2023

MSP - MCO

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,967 reviews

Reviews

1 / 20

2.0

Mediocre

Joseph,Aug 2023

MSP - MCO

Related info for your journey

What airport do you fly into for flights to Key West from Washington, D.C. Dulles Intl?
Key West (EYW) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Key West. You should not have trouble finding flights to Key West from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Key West airport from Washington, D.C. Dulles Intl. It is only a 2.6 mi journey from Key West (EYW) to Key West’s city center.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Key West round-trip?
According to our current data, Delta ($264), United Airlines ($293), and American Airlines ($349) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Key West. Delta is 45% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Key West one-way?
One-way options have recently been found by users for as low as $244 on Delta. Other airlines that offer cheap prices include American Airlines from $259 and United Airlines from $280 one-way.
Can I find deals for flights from Dulles Intl to Key West that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Key West?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Key West.
Can I find deals for business class flights from Dulles Intl to Key West?
Yes. Cheapflights offers flight deals from Dulles Intl to Key West 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 Washington, D.C. Dulles Intl Airport to Key West?
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Key West (average of $328). Flying from Washington, D.C. Dulles Intl Airport to Key West in March is currently the most expensive (average of $492). 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.

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Other flights to Key West

Top 3 airlines flying from Dulles Intl to Key West

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$179	Average$452	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$249	Average$490	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$354	Average$509	FlexibilityNo cancel fee	On-time71%

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$198+ Cheap flights from Dulles Intl (IAD) to Key West (EYW)

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Key West with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Key West are usually found in July or June, booked 51 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from Dulles Intl to Key West

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Dulles Intl to Key West

Cheapest flights from Dulles Intl to Key WestExplore the most affordable flight options available from Dulles Intl to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2025.

Explore the most affordable flight options available from Dulles Intl to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Dulles Intl to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Dulles Intl with our price prediction graph.

Cheapflights Insights

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

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Key West?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Key West. Price data was last updated on July 18, 2025.

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

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

Find hourly flight availability from Dulles Intl to Key West. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 23, 2025.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Key West?

Reviews of airlines servicing Key West

Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Key West, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Key West. 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 into for flights to Key West from Washington, D.C. Dulles Intl?

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

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

Can I find deals for flights from Dulles Intl to Key West that include hotel bookings?

How can I find direct flights from Dulles Intl to Key West?

Can I find deals for business class flights from Dulles Intl to Key West?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Key West

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

Top 3 airlines flying from Dulles Intl to Key West

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Cheapest flights from Dulles Intl to Key West
Explore the most affordable flight options available from Dulles Intl to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2025.