What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Key West?

American Airlines and United Airlines are the most popular carriers operating from Washington, D.C. Dulles Intl to Key West

What airlines fly to Key West?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Key West from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Key West. Keep in mind that there are 3 different airlines that fly to Key West on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Key West Airport?

Prices for flights from Washington, D.C. Dulles Intl Airport to Key West Airport are refreshed on a daily basis.

How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Key West Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Key West Airport.

What documentation or ID do you need to fly to Key West Airport?

The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$134 Cheap Flights from Washington, D.C. Dulles Intl Airport to Key West in 2026

Q: What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Key West?

Prices are currently low for flights on this route. Typical prices usually range from $566 to $512. The lowest price recently found on this route was $244.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Key West

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:32 pm - 11:27 am

IAD

EYW

21h 55m

1 stop

12:05 pm - 11:20 am

EYW

IAD

23h 15m

2 stops

$244Multiple Airlines

Sun, Aug 16 - Thu, Aug 20

1:38 pm - 11:27 am

IAD

EYW

21h 49m

1 stop

1:11 pm - 10:16 am

EYW

IAD

21h 05m

2 stops

$270Multiple Airlines

Thu, Aug 27 - Mon, Aug 31

9:03 pm - 1:54 pm

IAD

EYW

16h 51m

2 stops

12:07 pm - 6:33 pm

EYW

IAD

6h 26m

1 stop

$280Multiple Airlines

Fri, Jul 17 - Fri, Jul 24

8:25 am - 6:28 pm

IAD

EYW

10h 03m

2 stops

12:07 pm - 6:33 pm

EYW

IAD

6h 26m

1 stop

$282Multiple Airlines

Mon, Jul 6 - Fri, Jul 10

8:25 am - 6:37 pm

IAD

EYW

10h 12m

2 stops

9:42 pm - 6:33 pm

EYW

IAD

20h 51m

1 stop

$283Multiple Airlines

Mon, Aug 10 - Thu, Aug 13

1:32 pm - 2:37 pm

IAD

EYW

25h 05m

1 stop

5:03 pm - 11:17 pm

EYW

IAD

30h 14m

2 stops

$285Multiple Airlines

Sun, Aug 16 - Fri, Aug 21

3:16 pm - 1:54 pm

IAD

EYW

22h 38m

2 stops

12:07 pm - 12:26 pm

EYW

IAD

24h 19m

1 stop

$292Multiple Airlines

Fri, Jul 17 - Fri, Jul 24

1:32 pm - 2:37 pm

IAD

EYW

25h 05m

1 stop

1:14 pm - 11:43 am

EYW

IAD

22h 29m

1 stop

$294Multiple Airlines

Thu, Jul 9 - Tue, Jul 14

1:32 pm - 11:27 am

IAD

EYW

21h 55m

1 stop

11:04 am - 11:47 am

EYW

IAD

24h 43m

1 stop

$296Multiple Airlines

Sun, Aug 16 - Thu, Aug 20

12:28 pm - 12:34 pm

IAD

EYW

24h 06m

1 stop

8:48 pm - 11:20 am

EYW

IAD

14h 32m

2 stops

$301Multiple Airlines

Mon, Jul 20 - Thu, Jul 23

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Delta flights from Washington, D.C. Dulles Intl Airport to Key West

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Key West flight tickets

Delta

Sep 26

IAD3:13 pmWashington, D.C. Dulles Intl

4h 37m

1 stop

EYW7:50 pmKey West

Sep 30

EYW1:57 pmKey West

6h 18m

1 stop

IAD8:15 pmWashington, D.C. Dulles Intl

$319

Delta

Sep 26

IAD3:13 pmWashington, D.C. Dulles Intl

4h 37m

1 stop

EYW7:50 pmKey West

Sep 30

EYW6:19 pmKey West

6h 13m

1 stop

IAD12:32 amWashington, D.C. Dulles Intl

$323

Delta

Oct 3

IAD3:13 pmWashington, D.C. Dulles Intl

4h 37m

1 stop

EYW7:50 pmKey West

Oct 14

EYW6:00 pmKey West

6h 20m

1 stop

IAD12:20 amWashington, D.C. Dulles Intl

$349

American Airlines flights from Washington, D.C. Dulles Intl Airport to Key West

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Key West flight tickets

American Airlines

Jun 20

IAD1:12 pmWashington, D.C. Dulles Intl

5h 37m

1 stop

EYW6:49 pmKey West

Jun 24

EYW7:29 pmKey West

4h 44m

1 stop

IAD12:13 amWashington, D.C. Dulles Intl

$461

American Airlines

Jun 20

IAD1:12 pmWashington, D.C. Dulles Intl

5h 37m

1 stop

EYW6:49 pmKey West

Jun 24

EYW7:29 pmKey West

4h 44m

1 stop

IAD12:13 amWashington, D.C. Dulles Intl

$479

American Airlines

Jun 13

IAD1:12 pmWashington, D.C. Dulles Intl

5h 37m

1 stop

EYW6:49 pmKey West

Jun 17

EYW7:29 pmKey West

4h 44m

1 stop

IAD12:13 amWashington, D.C. Dulles Intl

$498

momondo 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

Cheapest round-trip

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sun 8/16

1:32 pm-11:27 am

1 stop21h 55m

Key West

Thu 8/20

12:05 pm-11:20 am

2 stops23h 15m

$244

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 8/27

1:38 pm-11:27 am

1 stop21h 49m

Key West

Mon 8/31

1:11 pm-10:16 am

2 stops21h 05m

$270

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Fri 7/17

9:03 pm-1:54 pm

2 stops16h 51m

Key West

Fri 7/24

12:07 pm-6:33 pm

1 stop6h 26m

$280

Quickest round-trip

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 7/6

8:25 am-6:28 pm

2 stops10h 03m

Key West

Fri 7/10

12:07 pm-6:33 pm

1 stop6h 26m

$282

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 8/10

8:25 am-6:37 pm

2 stops10h 12m

Key West

Thu 8/13

9:42 pm-6:33 pm

1 stop20h 51m

$283

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sun 8/16

1:32 pm-2:37 pm

1 stop25h 05m

Key West

Fri 8/21

5:03 pm-11:17 pm

2 stops30h 14m

$285

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Fri 7/17

3:16 pm-1:54 pm

2 stops22h 38m

Key West

Fri 7/24

12:07 pm-12:26 pm

1 stop24h 19m

$292

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 7/9

1:32 pm-2:37 pm

1 stop25h 05m

Key West

Tue 7/14

1:14 pm-11:43 am

1 stop22h 29m

$294

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sun 8/16

1:32 pm-11:27 am

1 stop21h 55m

Key West

Thu 8/20

11:04 am-11:47 am

1 stop24h 43m

$296

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 7/20

12:28 pm-12:34 pm

1 stop24h 06m

Key West

Thu 7/23

8:48 pm-11:20 am

2 stops14h 32m

$301

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Key West

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Key West?

What is the cheapest month to fly to Key West?

In general, January is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $384. If you are unable to visit Key West during the month of January, then departing from Washington, D.C. Dulles Intl Airport during the month August is also very affordable. Most momondo users find prices during this month for around $393.

What is the cheapest day to depart on your flight to Key West?

On average, the least expensive day to fly to Key West from Washington, D.C. Dulles Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $377. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to Key West for around $489.

What is the cheapest time of day to depart on your flight to Key West?

According to our data, the cheapest time of day to fly to Key West is at noon. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Key West at noon for as low as $399. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Key West are more costly in the morning, with an average ticket price of $463. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington, D.C. Dulles Intl to Key West flight route?

Fly from Washington, D.C. Dulles Intl to Key West for the best Washington, D.C. Dulles Intl - Key West flight prices

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

You are more likely to see cheaper flights to Key West from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $483 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from Washington, D.C. Dulles Intl Airport for as low as $376 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl Airport to Key West flights?

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl Airport to Key West flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Key West flights?

You could potentially save up to 23% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Key West flight.

When to book flights from Washington, D.C. Dulles Intl Airport to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Key West according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Key West (IAD to EYW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Key West

Fastest flight time	3h 22m
Direct flights	None

The fastest flight from Washington, D.C. Dulles Intl Airport to Key West takes 3h 22m

There are no direct flights from Washington, D.C. Dulles Intl Airport to Key West. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Key West.

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Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Key West

How far is Washington, D.C. Dulles Intl to Key West by plane?
Washington, D.C. Dulles Intl and Key West are 1025.8 mi apart from one another. Flights usually cover this in 3h 22m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Key West Airport?
Prices for flights from Washington, D.C. Dulles Intl Airport to Key West Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Key West Airport?
The number of operators available for flights from Washington, D.C. Dulles Intl Airport to Key West Airport is 3 as of June 2026.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Key West Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Key West Airport.
What documentation or ID do you need to fly to Key West Airport?
The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Key West?
Based on momondo bookings for flights between Washington, D.C. Dulles Intl Airport and Key West, the leading plane model is Embraer 175 (Enhanced Winglets), making up 45.26% of the total bookings. Other popular models include Embraer 175 with 22.11%, Airbus A319 with 18.95%, and Boeing 737-700 with 3.16%.
What is the most popular airline from Washington, D.C. Dulles Intl Airport to Key West?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. Dulles Intl Airport to Key West is United Airlines (59% of total bookings). The next most popular airlines are Delta (24%) and American Airlines (16%).

Best airlines flying from Washington, D.C. Dulles Intl Airport to Key West

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Key West with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $248	Free Cancellation	Rating 7.9 8,400 reviews	Search Delta flights
United Airlines	PriceFrom $279	Free Cancellation	Rating 7.4 9,810 reviews	Search United Airlines flights
American Airlines	PriceFrom $358	Free Cancellation	Rating 7.1 11,644 reviews	Search American Airlines flights

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Why should I use momondo to find a flight deal from Washington, D.C. to Key West?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Key West for you.

Can I find flights from Washington, D.C. to Key West with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to Key West flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Key West?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Key West.

I’m not ready to book a flight from Washington, D.C. to Key West right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Key West now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Key West and let you know when they change.

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Cheap flights from Washington, D.C. Dulles Intl Airport to Key West from $134

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Delta flights from Washington, D.C. Dulles Intl Airport to Key West

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Key West flight tickets

American Airlines flights from Washington, D.C. Dulles Intl Airport to Key West

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Key West flight tickets

momondo 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.

See travel insights to Key West from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Key West

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Key West?

What is the cheapest month to fly to Key West?

What is the cheapest day to depart on your flight to Key West?

What is the cheapest time of day to depart on your flight to Key West?

What is the cheapest Washington, D.C. Dulles Intl to Key West flight route?

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

What cabin class options are available on Washington, D.C. Dulles Intl Airport to Key West flights?

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Key West flights?

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Key West?

What airlines fly to Key West?

When to book flights from Washington, D.C. Dulles Intl Airport to Key West

Cheap Washington, D.C. Dulles Intl Airport to Key West (IAD to EYW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Key West

Fastest flight time

Direct flights

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Key West

Best airlines flying from Washington, D.C. Dulles Intl Airport to Key West

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Key West with momondo

Traveling to a place near Key West?

Why use momondo?

An easier way to manage your Key West trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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