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Saint Lucia

$269+ Cheap flights from Dulles Intl (IAD) to Saint Lucia

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 3/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — UVF
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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Find flight deals from Dulles Intl to Saint Lucia

Cheapest flights from Dulles Intl to Saint Lucia
Explore the most affordable flight options available from Dulles Intl to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.

This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/18:09 pmIAD - UVF
1 stop17h 55mAmerican Airlines
Thu 12/44:05 pmUVF - IAD
1 stop8h 56mAmerican Airlines
Deal found 11/20$347
This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:34 pmIAD - UVF
2 stops19h 45mAmerican Airlines
Fri 12/54:00 pmUVF - IAD
1 stop17h 44mAmerican Airlines
Deal found 11/20$352
This American Airlines deal was found by Cheapflights users on 11/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/296:44 amIAD - UVF
2 stops29h 43mAmerican Airlines
Sat 12/63:16 pmUVF - IAD
2 stops18h 28mAmerican Airlines
Deal found 11/20$365
This Delta deal was found by Cheapflights users on 11/18. 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 12/56:00 amIAD - UVF
1 stop8h 36mDelta
Thu 12/114:56 pmUVF - IAD
1 stop8h 16mDelta
Deal found 11/18$407
This American Airlines deal was found by Cheapflights users on 11/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:44 amIAD - UVF
1 stop7h 16mAmerican Airlines
Sat 12/63:55 pmUVF - IAD
1 stop9h 06mAmerican Airlines
Deal found 11/18$477
This Air Canada deal was found by Cheapflights users on 11/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:30 pmIAD - UVF
1 stop22h 50mAir Canada
Wed 12/105:15 pmUVF - IAD
1 stop23h 31mAir Canada
Deal found 11/19$486
This Justfly.com deal was found by Cheapflights users on 11/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/110:12 pmIAD - UVF
2 stops41h 08mAir Canada
Fri 12/55:15 pmUVF - IAD
2 stops28h 44mAir Canada
Deal found 11/20$487
This Mytrip deal was found by Cheapflights users on 11/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/159:45 amIAD - SLU
3 stops32h 15mMultiple Airlines
Sun 12/2112:10 pmSLU - IAD
2 stops24h 25mMultiple Airlines
Deal found 11/18$1,135
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/149:45 amIAD - SLU
2 stops32h 15mMultiple Airlines
Sat 12/206:20 pmSLU - IAD
2 stops23h 54mMultiple Airlines
Deal found 11/19$1,433
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2710:06 pmIAD - SLU
2 stops19h 54mMultiple Airlines
Sat 1/312:35 pmSLU - IAD
3 stops28h 11mMultiple Airlines
Deal found 11/19$1,718
This Mytrip deal was found by Cheapflights users on 11/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/264:30 pmIAD - SLU
2 stops19h 40mMultiple Airlines
Thu 1/112:35 pmSLU - IAD
3 stops22h 44mMultiple Airlines
Deal found 11/17$1,760
This Mytrip deal was found by Cheapflights users on 11/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1912:35 pmIAD - SLU
2 stops23h 35mMultiple Airlines
Wed 11/2610:15 amSLU - IAD
2 stops35h 11mMultiple Airlines
Deal found 11/18$1,821

Cheap flight deals from Dulles Intl to Saint Lucia

Keep the following information in mind while searching for Dulles Intl to Saint Lucia flight deals. Data was last updated November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$347
(American Airlines)

One-way from

$269
(Booking.com)

Popular in

November

Cheapest in

October

Average price

$1,756
Provider with most accurate pricing for Washington, D.C. (WAS)-Castries George F. L. Charle flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Castries George F. L. Charle flights.
Search Deals
From Washington, D.C. Dulles Intl to Saint Lucia
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Saint Lucia
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($356 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($84 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Saint Lucia 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 November 20, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Saint Lucia that are best for you.

Fly from

Dulles Intl

Fly to

Saint Lucia

Route

Depart

Return

Price

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Mon 1/26

6:00 am-3:05 pm

1 stop8h 05m

Castries Hewanorra

Thu 1/29

4:25 pm-12:24 am

1 stop8h 59m

$347

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Tue 3/3

6:00 am-3:04 pm

1 stop8h 04m

Castries Hewanorra

Wed 3/11

3:24 pm-12:07 am

1 stop8h 43m

$347

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Sun 2/22

4:41 pm-4:02 pm

2 stops22h 21m

Castries Hewanorra

Thu 2/26

5:02 pm-1:34 pm

2 stops21h 32m

$352

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Sun 1/11

1:08 pm-1:46 pm

2 stops23h 38m

Castries Hewanorra

Mon 1/19

5:02 pm-12:36 pm

2 stops20h 34m

$377

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Fri 12/5

6:00 am-3:36 pm

1 stop8h 36m

Castries Hewanorra

Thu 12/11

4:56 pm-12:12 am

1 stop8h 16m

$407

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Thu 1/8

7:01 am-3:03 pm

1 stop7h 02m

Castries Hewanorra

Thu 1/15

4:06 pm-11:12 pm

1 stop8h 06m

$435

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Mon 1/26

7:01 am-3:03 pm

1 stop7h 02m

Castries Hewanorra

Thu 1/29

5:02 pm-5:16 pm

2 stops25h 14m

$468

Washington, D.C.Castries

IAD - SLU

IADSLU

Washington, D.C. Dulles Intl

Mon 12/15

9:45 am-7:00 pm

3 stops32h 15m

Castries George F. L. Charle

Sun 12/21

12:10 pm-11:35 am

2 stops24h 25m

$1,135

Washington, D.C.Castries

IAD - SLU

IADSLU

Washington, D.C. Dulles Intl

Sun 12/14

9:45 am-7:00 pm

2 stops32h 15m

Castries George F. L. Charle

Sat 12/20

6:20 pm-5:14 pm

2 stops23h 54m

$1,433

Washington, D.C.Castries

IAD - SLU

IADSLU

Washington, D.C. Dulles Intl

Thu 1/1

10:06 pm-7:00 pm

2 stops19h 54m

Castries George F. L. Charle

Sat 1/10

6:20 pm-3:46 pm

2 stops22h 26m

$1,588

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

Showing 1-10 of 28 results
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Best time to book a flight from Dulles Intl to Saint Lucia

Have a flexible travel schedule? Discover the best time to fly to Saint Lucia 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 Saint Lucia

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

Find hourly flight availability from Dulles Intl to Saint Lucia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Saint Lucia, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 39% versus a flight in the evening.

Reviews of airlines servicing Saint Lucia

Get insights into the airlines that provide service to Saint Lucia. 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 Saint Lucia. Reviews last updated November 20, 2025.
Read reviews from past customers who have flown Delta and American Airlines from Washington, D.C. Dulles Intl Airport to Saint Lucia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,002 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,002 reviews
Delta
7.9
Good
8,002 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,047 reviews
Delta
7.9
Good
8,002 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Saint Lucia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Saint Lucia?

    Airlines like Delta and American Airlines fly from Washington, D.C. Dulles Intl Airport to Saint Lucia in about 8h 05m. The time it takes to get you to your destination can typically vary by up to 14h 16m. Airlines will cover a distance of 2011 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Dulles Intl to Saint Lucia that include hotel bookings?

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

  • How can I find direct flights from Dulles Intl to Saint Lucia?

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

  • Can I find deals for business class flights from Dulles Intl to Saint Lucia?

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

See more FAQs

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Alternative routes for Dulles Intl to Saint Lucia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Dulles Intl to Saint Lucia

Discover the top 2 airlines that operate flights from Dulles Intl to Saint Lucia. 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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$461Average$847FlexibilityNo cancel feeOn-time71%
DeltaCheapest$495Average$985FlexibilityNo cancel feeOn-timeN/A

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