$90+ Cheap flights from Dulles Intl (IAD) to Key West (EYW)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — EYW
Oct 29 — Nov 51
Round-trip
1 adult, Economy
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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”2. Select your favorite providers
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.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Key West are usually found in January or November, booked 37 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday
Cheap flight deals from Dulles Intl to Key West
Cheapest
Best
Last-minute
One-way
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 September 29, 2026.
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 September 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/26. 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 10/258:16 am -
1 stop26h 03m
Tue 11/31:16 pm -
2 stops27h 56m
Deal found 9/26![Multiple Airlines logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 10/258:16 am -
1 stop26h 03m
Wed 10/2810:04 am -
2 stops13h 39m
Deal found 9/24![Multiple Airlines logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 9/26. 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 11/89:48 am -
1 stop25h 16m
Wed 11/1110:04 am -
2 stops13h 39m
Deal found 9/26![Multiple Airlines logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 9/26. 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 11/89:48 am -
1 stop25h 16m
Fri 11/1312:59 pm -
2 stops34h 44m
Deal found 9/26![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 10/183:53 pm -
1 stop19h 11m
Wed 10/2110:04 am -
2 stops14h 17m
Deal found 9/24![Multiple Airlines logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Thu 10/2210:01 am -
1 stop23h 03m
Wed 10/2810:04 am -
2 stops13h 39m
Deal found 9/27![Multiple Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 9/28. 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 11/18:16 am -
1 stop26h 03m
Thu 11/58:54 pm -
1 stop13h 27m
Deal found 9/28![Multiple Airlines logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 9/25. 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.
Thu 10/2910:01 am -
1 stop23h 03m
Mon 11/210:59 am -
2 stops30h 13m
Deal found 9/25![Multiple Airlines logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 12/610:24 pm -
1 stop11h 55m
Tue 12/151:16 pm -
2 stops21h 55m
Deal found 9/27![Multiple Airlines logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 10/183:53 pm -
1 stop19h 11m
Thu 10/2212:01 pm -
2 stops12h 20m
Deal found 9/24![Multiple Airlines logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 10/183:53 pm -
1 stop19h 11m
Tue 10/201:16 pm -
2 stops11h 05m
Deal found 9/27![Multiple Airlines logo]()
$221
Best flights from Dulles Intl to Key WestDiscover 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 September 29, 2026.
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 September 29, 2026.
This Delta deal was found by Cheapflights users on 9/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1612:29 pm -
1 stop7h 32m
Mon 10/196:10 pm -
1 stop6h 32m
Deal found 9/28![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2110:25 pm -
2 stops13h 16m
Thu 12/244:04 pm -
2 stops20h 14m
Deal found 9/24![United Airlines logo]()
$655
This Delta deal was found by Cheapflights users on 9/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:00 pm -
1 stop5h 00m
Tue 11/176:08 pm -
1 stop6h 33m
Deal found 9/28![Delta logo]()
$434
This Delta deal was found by Cheapflights users on 9/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2810:14 am -
1 stop7h 01m
Sun 11/16:11 pm -
1 stop6h 31m
Deal found 9/27![Delta logo]()
$478
This Delta deal was found by Cheapflights users on 9/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:08 am -
1 stop4h 45m
Sat 10/106:11 pm -
1 stop6h 31m
Deal found 9/27![Delta logo]()
$509
This United Airlines deal was found by Cheapflights users on 9/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/710:22 pm -
2 stops15h 34m
Wed 11/112:51 pm -
2 stops16h 19m
Deal found 9/28![United Airlines logo]()
$694
This Delta deal was found by Cheapflights users on 9/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/73:03 pm -
1 stop4h 58m
Tue 11/106:08 pm -
1 stop6h 33m
Deal found 9/26![Delta logo]()
$553
This Delta deal was found by Cheapflights users on 9/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:32 pm -
1 stop7h 28m
Sun 11/227:30 am -
1 stop6h 24m
Deal found 9/25![Delta logo]()
$679
Last-minute flights from Dulles Intl to Key WestDiscover last-minute flight deals from Dulles Intl to Key West. Data last updated September 29, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Key West. Data last updated September 29, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 10/183:53 pm -
1 stop19h 11m
Wed 10/2110:04 am -
2 stops14h 17m
Deal found 9/24![Multiple Airlines logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 10/183:53 pm -
1 stop19h 11m
Thu 10/2212:01 pm -
2 stops12h 20m
Deal found 9/24![Multiple Airlines logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 10/183:53 pm -
1 stop19h 11m
Tue 10/201:16 pm -
2 stops11h 05m
Deal found 9/27![Multiple Airlines logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Thu 10/2210:01 am -
1 stop23h 03m
Wed 10/2810:04 am -
2 stops13h 39m
Deal found 9/27![Multiple Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 9/24. 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.
Thu 10/2210:01 am -
1 stop23h 03m
Thu 10/2912:01 pm -
2 stops11h 42m
Deal found 9/24![Multiple Airlines logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 9/24. 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.
Sat 10/247:26 pm -
1 stop15h 55m
Tue 10/271:16 pm -
2 stops10h 27m
Deal found 9/24![Multiple Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 9/26. 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 10/258:16 am -
1 stop26h 03m
Tue 11/31:16 pm -
2 stops27h 56m
Deal found 9/26![Multiple Airlines logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 10/258:16 am -
1 stop26h 03m
Wed 10/2810:04 am -
2 stops13h 39m
Deal found 9/24![Multiple Airlines logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 9/25. 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.
Thu 10/2910:01 am -
1 stop23h 03m
Mon 11/210:59 am -
2 stops30h 13m
Deal found 9/25![Multiple Airlines logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Fri 10/301:36 pm -
1 stop19h 26m
Wed 11/410:04 am -
2 stops13h 39m
Deal found 9/27![Multiple Airlines logo]()
$235
One-way flights from Dulles Intl to Key WestSearch for one-way flight options from Dulles Intl to Key West. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
Search for one-way flight options from Dulles Intl to Key West. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/25. 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.
Wed 11/118:05 am -
2 stops27h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Tue 10/278:05 am -
2 stops25h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 9/28. 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 11/97:40 am -
2 stops28h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 9/28. 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.
Tue 10/207:50 am -
2 stops28h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 12/2110:25 pm -
1 stop12h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 9/28. 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.
Tue 10/136:08 pm -
2 stops15h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 9/24. 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.
Tue 12/2210:25 pm -
1 stop18h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$171
Find flight deals from Dulles Intl to Key West
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Key West (EYW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $188 (Kiwi.com) |
One-way from | $90 (Kiwi.com) |
Popular in | October |
Cheapest in | January |
Average price | $503 |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to Key West 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 7,457,451 searches. Data last updated September 29, 2026.
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
Cheapest round-trip
Washington, D.C.Key West
IAD Washington, D.C. Dulles Intl - EYW Key West
IADEYW
Washington, D.C. Dulles Intl
Tue 10/27
8:05 am-9:24 am
2 stops25h 19m
Key West
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$91
Washington, D.C.Key West
IAD Washington, D.C. Dulles Intl - EYW Key West
IADEYW
Washington, D.C. Dulles Intl
Mon 11/9
7:40 am-12:36 pm
2 stops28h 56m
Key West
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$121
Washington, D.C.Key West
IAD Washington, D.C. Dulles Intl - EYW Key West
IADEYW
Washington, D.C. Dulles Intl
Tue 12/8
10:44 am-6:01 pm
1 stop7h 17m
Key West
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$214
Quickest round-trip
Washington, D.C.Key West
IAD Washington, D.C. Dulles Intl - EYW Key West
IADEYW
Washington, D.C. Dulles Intl
Tue 12/22
9:00 am-12:07 pm
Nonstop3h 07m
Key West
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$233
Washington, D.C.Key West
IAD Washington, D.C. Dulles Intl - EYW Key West
IADEYW
Washington, D.C. Dulles Intl
Sat 10/10
9:06 pm-10:19 am
3 stops37h 13m
Key West
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$236
Washington, D.C.Key West
IAD Washington, D.C. Dulles Intl - EYW Key West
IADEYW
Washington, D.C. Dulles Intl
Mon 12/21
9:00 am-12:07 pm
Nonstop3h 07m
Key West
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$259
Washington, D.C.Key West
IAD Washington, D.C. Dulles Intl - EYW Key West
IADEYW
Washington, D.C. Dulles Intl
Tue 10/20
12:27 pm-5:15 pm
1 stop4h 48m
Key West
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$299
Washington, D.C.Key West
IAD Washington, D.C. Dulles Intl - EYW Key West
IADEYW
Washington, D.C. Dulles Intl
Tue 10/27
6:00 am-10:47 am
1 stop4h 47m
Key West
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$299
Washington, D.C.Key West
IAD Washington, D.C. Dulles Intl - EYW Key West
IADEYW
Washington, D.C. Dulles Intl
Mon 11/30
6:10 am-1:52 pm
1 stop7h 42m
Key West
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$299
Washington, D.C.Key West
IAD Washington, D.C. Dulles Intl - EYW Key West
IADEYW
Washington, D.C. Dulles Intl
Sat 10/24
6:15 am-1:03 pm
2 stops6h 48m
Key West
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$354
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Dulles Intl to Key West
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Key West in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Key West flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Key West flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Key West flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Key West flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Key West flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
IAD-EYW
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 36 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Key West (average of $384). Flying from Washington, D.C. Dulles Intl Airport to Key West in October is currently the most expensive (average of $730). 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.
How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Key West?
Airfare is below average for this route at the moment.
Washington, D.C. Dulles Intl Airport to Key West flights typically cost between $651 and $834 in October.The cheapest round-trip price found within the last 5 days was $188 on Multiple Airlines (Oct 25-Nov 3).
Reviews of airlines servicing Key West
Get insights into the airlines that provide service to Key West. 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 Key West. Reviews last updated September 29, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Key West, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Food
7.2
Overall
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Entertainment
7.8
Food
7.2
Overall
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Entertainment
7.8
Food
7.2
Overall
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Entertainment
7.8
Food
7.2
Overall
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
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Top 3 airlines flying from Dulles Intl to Key West
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$249 | Average$553 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$295 | Average$461 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$337 | Average$540 | FlexibilityNo cancel fee | On-time71% |