IAD - EYW

$120 Find Cheap Flights from Washington Dulles Airport to Key West - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$190
Typical prices: $342-$585
Multiple Airlines
Wed 10/3Tue 10/9
IAD - EYW • 1 stop
Cheapest non-stop
$409
Typical prices: $335-$560
United Airlines
Fri 12/21Tue 12/25
IAD - EYW • Non-stop
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. Dulles Intl Airport and Key West. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
18 weeks
in advance
Our data shows that travelers who book at least 18 weeks in advance save around 36% compared to booking last minute.
Insights
Insights
When to travel
December
Cheapest • 17% price drop
January
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Orlando (MCO)
Cheapest • Avg $279 (round-trip)
Atlanta Hartsfield-Jackson (ATL)
Shortest trip • 5h 10m (one-way)
Insights
Insights
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We hope you love your trip to Key West!
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Flight Deals

Cheap Flights from Dulles Intl to Key West (IAD-EYW)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Key West

Sat, Oct 3 - Fri, Oct 9
Multiple Airlines Logo
9:33 am - 10:19 amIAD  Washington, D.C. Dulles Intl-EYW Key West
24h 46m1 stop Orlando
Multiple Airlines Logo
10:59 am - 10:17 amEYW  Key West-IAD Washington, D.C. Dulles Intl
23h 18m1 stop Orlando
$190Multiple Airlines
Sat, Oct 31 - Tue, Nov 3
Multiple Airlines Logo
11:16 am - 11:19 amIAD  Washington, D.C. Dulles Intl-EYW Key West
24h 03m1 stop Orlando
Multiple Airlines Logo
1:16 pm - 11:43 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
10h 27m2 stops Tampa Atlanta Hartsfield-Jackson
$192Multiple Airlines
Sun, Nov 1 - Thu, Nov 5
Multiple Airlines Logo
8:16 am - 10:19 amIAD  Washington, D.C. Dulles Intl-EYW Key West
26h 03m1 stop Knoxville McGhee Tyson
Multiple Airlines Logo
12:01 pm - 11:43 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
11h 42m2 stops Tampa Atlanta Hartsfield-Jackson
$207Multiple Airlines
Tue, Dec 8 - Tue, Dec 15
Delta Logo
3:00 pm - 8:02 pmIAD  Washington, D.C. Dulles Intl-EYW Key West
5h 02m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:06 pm - 12:42 amEYW  Key West-IAD Washington, D.C. Dulles Intl
6h 36m1 stop Atlanta Hartsfield-Jackson
$339Delta
Wed, Dec 16 - Tue, Dec 22
Delta Logo
6:00 am - 10:48 amIAD  Washington, D.C. Dulles Intl-EYW Key West
4h 48m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:20 pm - 12:37 amEYW  Key West-IAD Washington, D.C. Dulles Intl
6h 17m1 stop Atlanta Hartsfield-Jackson
$339Delta
Tue, Dec 8 - Tue, Dec 15
American Airlines Logo
7:00 am - 1:03 pmIAD  Washington, D.C. Dulles Intl-EYW Key West
6h 03m1 stop Charlotte Douglas
American Airlines Logo
1:52 pm - 6:47 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
4h 55m1 stop Charlotte Douglas
$339American Airlines
Sat, Oct 24 - Tue, Oct 27
American Airlines Logo
5:01 am - 11:49 amIAD  Washington, D.C. Dulles Intl-EYW Key West
6h 48m1 stop Charlotte Douglas
American Airlines Logo
3:06 pm - 8:16 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
5h 10m1 stop Charlotte Douglas
$359American Airlines
Mon, Oct 5 - Sat, Oct 10
American Airlines Logo
5:01 am - 12:08 pmIAD  Washington, D.C. Dulles Intl-EYW Key West
7h 07m1 stop Charlotte Douglas
American Airlines Logo
7:19 pm - 11:58 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
4h 39m1 stop Charlotte Douglas
$359American Airlines
Sat, Mar 6 - Thu, Mar 11
United Airlines Logo
8:15 am - 5:02 pmIAD  Washington, D.C. Dulles Intl-EYW Key West
8h 47m1 stop Newark
United Airlines Logo
6:20 pm - 9:09 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
2h 49mnonstop
$402United Airlines
Mon, Dec 21 - Fri, Dec 25
United Airlines Logo
9:00 am - 12:07 pmIAD  Washington, D.C. Dulles Intl-EYW Key West
3h 07mnonstop
United Airlines Logo
1:35 pm - 4:15 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
2h 40mnonstop
$409United Airlines
Booking Insights

Price, demand and travel trends for Washington, D.C. Dulles Intl Airport to Key West flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Washington, D.C. Dulles Intl Airport to Key West with more confidence.

What's the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Key West?

Tuesday is the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Key West, it is 21% cheaper than the average day. Thursday is the most expensive day with flight prices 18% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • December is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Key West at $359 round-trip.
  • October ($608) and May ($550) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 69% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Washington, D.C. Dulles Intl Airport to Key West the cheapest?

Flights from Washington, D.C. Dulles Intl Airport to Key West are cheapest 18 weeks before departure. Booking in this window typically costs about 36% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Expert advice

Expert advice for your flight from Dulles Intl to Key West

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Paul Rubio

Paul Rubio

Expert on EYW

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more

Key details for Washington, D.C. Dulles Intl Airport to Key West flights

Low season

August

Cheapest flight

$120
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Washington, D.C. Dulles Intl Airport to Key West

When to book flights from Dulles Intl to Key West

Are your dates flexible? Find out the best times to travel from Dulles Intl to Key West based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. Dulles Intl Airport to Key West flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airlines offer extra legroom and free seat selection on Washington, D.C. Dulles Intl Airport to Key West flights?

    Among airlines operating Washington, D.C. Dulles Intl Airport to Key West flights:

    • United Airlines: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airports can I use when flying from Washington, D.C. Dulles Intl Airport to Key West?

    Flights from Washington, D.C. Dulles Intl Airport to Key West usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Key West (EYW).

  • Which airlines include bags at no extra cost on Washington, D.C. Dulles Intl Airport to Key West flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a cabin bag in Economy Class class

    Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

  • What cabin classes can I book on flights from Washington, D.C. Dulles Intl Airport to Key West?

    Two cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Key West:

    • Economy Class
    • First Class

  • How much can I save by taking a layover when flying from Washington, D.C. Dulles Intl Airport to Key West?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $279 round-trip via Orlando (MCO), compared to $419 for nonstop.

  • What is the standard checked-bag allowance on flights from Washington, D.C. Dulles Intl Airport to Key West?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Washington, D.C. Dulles Intl Airport to Key West?

    The Embraer 175 (Enhanced Winglets) family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Embraer 175 variants.

  • Which airports do connecting flights from Washington, D.C. Dulles Intl Airport to Key West pass through?

    One-stop flights from Washington, D.C. Dulles Intl Airport to Key West most commonly connect through:

    • Atlanta Hartsfield-Jackson (ATL) - 57% of one-stop connections
    • Charlotte Douglas (CLT) - 39% of one-stop connections
    • Newark (EWR) - 2% of one-stop connections
    • Orlando (MCO) - 1% of one-stop connections

    Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Washington, D.C. Dulles Intl Airport to Key West?

    Yes. Being flexible with your travel dates can save you up to 33% on the Washington, D.C. Dulles Intl Airport to Key West route. Tuesday is the cheapest departure day at $343 round-trip on average, while Thursday is the most expensive at $511, a difference of $168. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Key West?

    Some of the most popular sights in Key West are Duval Street, Key West Historic District and Mallory Square. These are among the most viewed places in Key West on KAYAK.

  • How expensive are last-minute Washington, D.C. Dulles Intl Airport to Key West flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 13% above the route average of $433. Book 18 weeks before departure for the lowest fares.

  • How long is a flight from Washington, D.C. Dulles Intl Airport to Key West?

    A nonstop flight from Washington, D.C. Dulles Intl Airport to Key West takes 0h 00m, covering 1,025 miles.

  • Do I need a passport to fly from Washington, D.C. Dulles Intl Airport to Key West?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • How are flight prices from Washington, D.C. Dulles Intl Airport to Key West looking right now?

    One-way fares from Washington, D.C. Dulles Intl Airport to Key West are currently lower than usual. Average one-way flight prices are about $225, which is 18% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Washington, D.C. Dulles Intl Airport to Key West?

    Flying via Atlanta Hartsfield-Jackson (ATL) gives the shortest average 1-stop total travel time at 5h 10m, compared with 5h 25m via Charlotte Douglas (CLT) and 6h 05m via Newark (EWR).

  • What car rental options are available at Key West Airport (EYW)?

    Key West Airport (EYW) hosts 5 major car rental companies, with daily rates starting from around $29 for economy cars. Top options include:
    • Dollar
    • Hertz
    • Budget
    • Enterprise Rent-A-Car
    • Alamo

  • How much should I expect to pay for a Washington, D.C. Dulles Intl Airport to Key West flight?

    Round-trip flights from Washington, D.C. Dulles Intl Airport to Key West range from $342 to $585, with an average of $433 over the past 12 months. Anything below $342 counts as a good deal.

Your guide to booking Washington, D.C. Dulles Intl Airport to Key West flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Thursday. On this route, Tuesday flights average $343 - about $168 less than Thursday (33% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 18 weeks before you fly. On this route, that window historically saves about 36% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Washington, D.C. Dulles Intl Airport to Key West trip for December. Fares historically average $359 round-trip in that month - typically $249 less than the most expensive month, which is October (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Orlando Airport (MCO) can be cheaper than flying direct. The cheapest layover option averages $279 round-trip on this route - about $140 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Key West Airport.
    - Havana Cabana at Key West
    - Fairfield Inn & Suites by Marriott Key West at The Keys Collection
    - Parrot Key Hotel & Villas

More options for your flight from Dulles Intl to Key West

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