$109+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — EYW
Aug 1 — Aug 81
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 August or July, 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 July 2, 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 July 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/21:32 pm
IAD
- EYW
1 stop25h 05m
Multiple Airlines
Thu 8/69:31 pm
EYW
- IAD
2 stops13h 49m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/294:52 pm
IAD
- EYW
1 stop18h 33m
Multiple Airlines
Thu 9/312:05 pm
EYW
- IAD
1 stop28h 02m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/294:52 pm
IAD
- EYW
1 stop18h 33m
Multiple Airlines
Wed 9/211:46 am
EYW
- IAD
2 stops11h 06m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 9/98:00 pm
IAD
- EYW
1 stop15h 35m
Multiple Airlines
Sat 9/1210:04 am
EYW
- IAD
2 stops14h 24m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/2611:05 am
IAD
- EYW
1 stop24h 20m
Multiple Airlines
Tue 9/11:14 pm
EYW
- IAD
1 stop22h 29m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/2611:05 am
IAD
- EYW
1 stop24h 20m
Multiple Airlines
Mon 8/3112:07 pm
EYW
- IAD
1 stop22h 00m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/304:52 pm
IAD
- EYW
1 stop18h 35m
Multiple Airlines
Thu 9/312:05 pm
EYW
- IAD
1 stop28h 02m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/2611:05 am
IAD
- EYW
1 stop24h 20m
Multiple Airlines
Thu 9/312:05 pm
EYW
- IAD
1 stop28h 02m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 6/28. 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.
Wed 8/1911:05 am
IAD
- EYW
1 stop22h 05m
Multiple Airlines
Wed 8/2611:46 am
EYW
- IAD
2 stops11h 06m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/2611:05 am
IAD
- EYW
1 stop24h 20m
Multiple Airlines
Wed 9/211:46 am
EYW
- IAD
2 stops11h 06m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/234:52 pm
IAD
- EYW
1 stop18h 35m
Multiple Airlines
Wed 8/2611:46 am
EYW
- IAD
2 stops11h 06m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$250
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 July 2, 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 July 2, 2026.
This Delta deal was found by Cheapflights users on 6/27. 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.
Sat 9/263:15 pm
IAD
- EYW
1 stop4h 46m
Delta
Sat 10/32:00 pm
EYW
- IAD
1 stop6h 15m
Delta
Deal found 6/27![Delta logo]()
$309
This Delta deal was found by Cheapflights users on 6/27. 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.
Sat 8/11:40 pm
IAD
- EYW
1 stop6h 11m
Delta
Tue 8/47:40 am
EYW
- IAD
1 stop6h 25m
Delta
Deal found 6/27![Delta logo]()
$309
This Delta deal was found by Cheapflights users on 7/1. 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 8/410:16 am
IAD
- EYW
1 stop7h 04m
Delta
Wed 8/121:59 pm
EYW
- IAD
1 stop6h 06m
Delta
Deal found 7/1![Delta logo]()
$309
This Delta deal was found by Cheapflights users on 7/1. 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 8/116:00 am
IAD
- EYW
1 stop7h 00m
Delta
Wed 8/191:59 pm
EYW
- IAD
1 stop6h 06m
Delta
Deal found 7/1![Delta logo]()
$309
This Delta deal was found by Cheapflights users on 7/1. 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 8/1812:30 pm
IAD
- EYW
1 stop4h 50m
Delta
Tue 8/257:40 am
EYW
- IAD
1 stop6h 25m
Delta
Deal found 7/1![Delta logo]()
$309
This Delta deal was found by Cheapflights users on 6/28. 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.
Mon 8/318:28 am
IAD
- EYW
1 stop4h 32m
Delta
Fri 9/46:15 pm
EYW
- IAD
1 stop25h 50m
Delta
Deal found 6/28![Delta logo]()
$383
This Delta deal was found by Cheapflights users on 6/30. 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 8/612:30 pm
IAD
- EYW
1 stop7h 27m
Delta
Mon 8/107:40 am
EYW
- IAD
1 stop6h 25m
Delta
Deal found 6/30![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 7/1. 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 8/156:00 am
IAD
- EYW
1 stop4h 50m
Delta
Tue 8/186:15 pm
EYW
- IAD
1 stop6h 19m
Delta
Deal found 7/1![Delta logo]()
$394
This Delta deal was found by Cheapflights users on 6/30. 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 8/82:54 pm
IAD
- EYW
1 stop5h 03m
Delta
Sat 8/157:40 am
EYW
- IAD
1 stop6h 03m
Delta
Deal found 6/30![Delta logo]()
$394
This Delta deal was found by Cheapflights users on 7/1. 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 9/2312:26 pm
IAD
- EYW
1 stop7h 35m
Delta
Mon 9/286:19 pm
EYW
- IAD
1 stop6h 21m
Delta
Deal found 7/1![Delta logo]()
$424
Last-minute flights from Dulles Intl to Key WestDiscover last-minute flight deals from Dulles Intl to Key West. Data last updated July 2, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Key West. Data last updated July 2, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/21:32 pm
IAD
- EYW
1 stop25h 05m
Multiple Airlines
Thu 8/69:31 pm
EYW
- IAD
2 stops13h 49m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 6/28. 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.
Wed 8/1911:05 am
IAD
- EYW
1 stop22h 05m
Multiple Airlines
Wed 8/2611:46 am
EYW
- IAD
2 stops11h 06m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/234:52 pm
IAD
- EYW
1 stop18h 35m
Multiple Airlines
Wed 8/2611:46 am
EYW
- IAD
2 stops11h 06m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/2611:05 am
IAD
- EYW
1 stop24h 20m
Multiple Airlines
Tue 9/11:14 pm
EYW
- IAD
1 stop22h 29m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/2611:05 am
IAD
- EYW
1 stop24h 20m
Multiple Airlines
Mon 8/3112:07 pm
EYW
- IAD
1 stop22h 00m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/2611:05 am
IAD
- EYW
1 stop24h 20m
Multiple Airlines
Thu 9/312:05 pm
EYW
- IAD
1 stop28h 02m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/2611:05 am
IAD
- EYW
1 stop24h 20m
Multiple Airlines
Wed 9/211:46 am
EYW
- IAD
2 stops11h 06m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/294:52 pm
IAD
- EYW
1 stop18h 33m
Multiple Airlines
Thu 9/312:05 pm
EYW
- IAD
1 stop28h 02m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/294:52 pm
IAD
- EYW
1 stop18h 33m
Multiple Airlines
Wed 9/211:46 am
EYW
- IAD
2 stops11h 06m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/304:52 pm
IAD
- EYW
1 stop18h 35m
Multiple Airlines
Thu 9/312:05 pm
EYW
- IAD
1 stop28h 02m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$243
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 July 2, 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 July 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/294:52 pm
IAD
- EYW
1 stop18h 33m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/11:21 pm
IAD
- EYW
1 stop24h 01m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/268:39 pm
IAD
- EYW
2 stops22h 34m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 6/27. 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.
Sat 7/251:21 pm
IAD
- EYW
1 stop22h 04m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/256:20 am
IAD
- EYW
2 stops28h 46m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/274:52 pm
IAD
- EYW
1 stop18h 35m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 7/206:09 pm
IAD
- EYW
2 stops18h 25m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 6/28. 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.
Thu 7/161:32 pm
IAD
- EYW
1 stop21h 55m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/68:33 pm
IAD
- EYW
2 stops14h 54m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/2412:28 pm
IAD
- EYW
1 stop24h 06m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$162
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 July 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $215 (Kiwi.com) |
One-way from | $109 (Kiwi.com) |
Popular in | October |
Cheapest in | August |
Average price | $380 |
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 2,558,603 searches. Data last updated July 2, 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
Quickest round-trip
Washington, D.C.Key West
IAD - EYW
IADEYW
Washington, D.C. Dulles Intl
Sat 9/26
3:15 pm-8:01 pm
1 stop4h 46m
Key West
Sat 10/3
2:00 pm-8:15 pm
1 stop6h 15m
$309
Washington, D.C.Key West
IAD - EYW
IADEYW
Washington, D.C. Dulles Intl
Sat 8/1
1:40 pm-7:51 pm
1 stop6h 11m
Key West
Tue 8/4
7:40 am-2:05 pm
1 stop6h 25m
$309
Washington, D.C.Key West
IAD - EYW
IADEYW
Washington, D.C. Dulles Intl
Tue 8/4
10:16 am-5:20 pm
1 stop7h 04m
Key West
Wed 8/12
1:59 pm-8:05 pm
1 stop6h 06m
$309
Washington, D.C.Key West
IAD - EYW
IADEYW
Washington, D.C. Dulles Intl
Tue 8/11
6:00 am-1:00 pm
1 stop7h 00m
Key West
Wed 8/19
1:59 pm-8:05 pm
1 stop6h 06m
$309
Washington, D.C.Key West
IAD - EYW
IADEYW
Washington, D.C. Dulles Intl
Tue 8/18
12:30 pm-5:20 pm
1 stop4h 50m
Key West
Tue 8/25
7:40 am-2:05 pm
1 stop6h 25m
$309
Washington, D.C.Key West
IAD - EYW
IADEYW
Washington, D.C. Dulles Intl
Mon 8/31
8:28 am-1:00 pm
1 stop4h 32m
Key West
Fri 9/4
6:15 pm-8:05 pm
1 stop25h 50m
$383
Washington, D.C.Key West
IAD - EYW
IADEYW
Washington, D.C. Dulles Intl
Thu 8/6
12:30 pm-7:57 pm
1 stop7h 27m
Key West
Mon 8/10
7:40 am-2:05 pm
1 stop6h 25m
$389
Washington, D.C.Key West
IAD - EYW
IADEYW
Washington, D.C. Dulles Intl
Sat 8/15
6:00 am-10:50 am
1 stop4h 50m
Key West
Tue 8/18
6:15 pm-12:34 am
1 stop6h 19m
$394
Washington, D.C.Key West
IAD - EYW
IADEYW
Washington, D.C. Dulles Intl
Sat 8/8
2:54 pm-7:57 pm
1 stop5h 03m
Key West
Sat 8/15
7:40 am-1:43 pm
1 stop6h 03m
$394
Washington, D.C.Key West
IAD - EYW
IADEYW
Washington, D.C. Dulles Intl
Wed 9/23
12:26 pm-8:01 pm
1 stop7h 35m
Key West
Mon 9/28
6:19 pm-12:40 am
1 stop6h 21m
$424
Showing 1-10 of 17 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 July.
| 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, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Key West (average of $363). Flying from Washington, D.C. Dulles Intl Airport to Key West in October is currently the most expensive (average of $608). 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?
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 July 2, 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.
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Related info for your journey
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Other flights to Key West
Explore flights to Key West departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 2, 2026.
Dulles Intl and Key West flights
Browse other Dulles Intl and Key West flight options. Last updated on July 2, 2026.
Other flights from Dulles Intl
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Top 3 airlines flying from Dulles Intl to Key West
Discover the top 3 airlines that operate flights from Dulles Intl to Key West. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$248 | Average$503 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$279 | Average$470 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$358 | Average$516 | FlexibilityNo cancel fee | On-time71% |