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Saint Lucia

$232+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — UVF
Aug 11 — Aug 181
Tue 8/11
Tue 8/18
1 adult, Economy
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Cheap 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 July 12, 2026.

This Air Canada deal was found by Cheapflights users on 7/9. 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.
Sun 11/14:30 pm
IAD
-
UVF
1 stop23h 10m
Air Canada
Fri 11/65:40 pm
UVF
-
IAD
1 stop23h 05m
Air Canada
Deal found 7/9$538
This Air Canada deal was found by Cheapflights users on 7/8. 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.
Thu 10/89:55 am
IAD
-
UVF
1 stop28h 20m
Air Canada
Fri 10/163:15 pm
UVF
-
IAD
1 stop30h 09m
Air Canada
Deal found 7/8$546
This Air Canada deal was found by Cheapflights users on 7/9. 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.
Sun 11/84:30 pm
IAD
-
UVF
1 stop23h 10m
Air Canada
Fri 11/135:40 pm
UVF
-
IAD
1 stop23h 05m
Air Canada
Deal found 7/9$562
This Air Canada deal was found by Cheapflights users on 7/10. 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.
Sun 11/84:30 pm
IAD
-
UVF
1 stop23h 10m
Air Canada
Thu 11/125:40 pm
UVF
-
IAD
1 stop23h 05m
Air Canada
Deal found 7/10$564
This Air Canada deal was found by Cheapflights users on 7/9. 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.
Mon 8/244:20 pm
IAD
-
UVF
1 stop22h 00m
Air Canada
Fri 8/283:15 pm
UVF
-
IAD
1 stop24h 09m
Air Canada
Deal found 7/9$569
This Orbitz deal was found by Cheapflights users on 7/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:20 pm
IAD
-
UVF
1 stop22h 00m
Air Canada
Fri 9/43:15 pm
UVF
-
IAD
2 stops23h 40m
Air Canada
Deal found 7/9$572
This FlightHub deal was found by Cheapflights users on 7/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:45 pm
IAD
-
UVF
2 stops46h 35m
Air Canada
Tue 9/13:15 pm
UVF
-
IAD
1 stop29h 09m
Air Canada
Deal found 7/9$582
This FlightHub deal was found by Cheapflights users on 7/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:55 am
IAD
-
SLU
2 stops33h 05m
Multiple Airlines
Fri 9/2512:35 pm
SLU
-
IAD
2 stops31h 50m
Multiple Airlines
Deal found 7/8$882
This Expedia deal was found by Cheapflights users on 7/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/169:55 am
IAD
-
SLU
2 stops32h 05m
Multiple Airlines
Sat 11/2112:35 pm
SLU
-
IAD
2 stops32h 48m
Multiple Airlines
Deal found 7/11$937
This Air Canada deal was found by Cheapflights users on 7/11. 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.
Fri 8/214:20 pm
IAD
-
SLU
2 stops26h 40m
Multiple Airlines
Wed 8/2612:35 pm
SLU
-
IAD
2 stops26h 49m
Multiple Airlines
Deal found 7/11$942
This Air Canada deal was found by Cheapflights users on 7/11. 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.
Fri 10/304:30 pm
IAD
-
SLU
2 stops26h 30m
Multiple Airlines
Tue 11/312:35 pm
SLU
-
IAD
2 stops24h 10m
Multiple Airlines
Deal found 7/11$1,002
This Air Canada deal was found by Cheapflights users on 7/10. 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.
Fri 9/44:20 pm
IAD
-
SLU
2 stops26h 40m
Multiple Airlines
Mon 9/712:35 pm
SLU
-
IAD
2 stops25h 47m
Multiple Airlines
Deal found 7/10$1,023

Find 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 July 12, 2026.

Round-trip from

$538
(Air Canada)

One-way from

$232
(FlightHub)

Popular in

November

Cheapest in

December
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. 18% potential increase in price ($209 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 23% potential price decrease ($179 potential savings vs. average RT price).
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 July 12, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Mon 11/16

7:00 am-3:10 pm

1 stop7h 10m

Castries Hewanorra

Fri 11/20

4:25 pm-12:20 am

1 stop8h 55m

$688

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 8/26

6:00 am-2:14 pm

1 stop8h 14m

Castries Hewanorra

Tue 9/1

3:34 pm-12:34 am

1 stop9h 00m

$688

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Tue 8/25

6:00 am-2:14 pm

1 stop8h 14m

Castries Hewanorra

Tue 9/1

3:34 pm-12:34 am

1 stop9h 00m

$688

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Tue 9/22

6:00 am-2:12 pm

1 stop8h 12m

Castries Hewanorra

Tue 9/29

3:32 pm-12:40 am

1 stop9h 08m

$688

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Thu 10/29

6:00 am-2:26 pm

1 stop8h 26m

Castries Hewanorra

Tue 11/3

4:41 pm-12:31 am

1 stop8h 50m

$698

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 8/26

6:00 am-2:14 pm

1 stop8h 14m

Castries Hewanorra

Mon 8/31

3:34 pm-12:34 am

1 stop9h 00m

$698

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Sun 12/6

7:50 pm-3:10 pm

1 stop18h 20m

Castries Hewanorra

Mon 3/1

4:25 pm-9:11 am

1 stop17h 46m

$698

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Fri 12/4

6:00 am-3:10 pm

1 stop8h 10m

Castries Hewanorra

Mon 3/1

4:25 pm-9:11 am

1 stop17h 46m

$708

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 8/26

10:27 am-1:49 pm

2 stops27h 22m

Castries Hewanorra

Mon 8/31

3:19 pm-10:55 pm

1 stop7h 36m

$716

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Tue 10/6

6:00 am-2:26 pm

1 stop8h 26m

Castries Hewanorra

Fri 10/16

3:41 pm-10:05 am

1 stop18h 24m

$797

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Showing 1-10 of 32 resultsSorted by cheapest first
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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 month to book a flight from Washington, D.C. Dulles Intl Airport to Saint Lucia?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Saint Lucia (average of $342). Flying from Washington, D.C. Dulles Intl Airport to Saint Lucia in November is currently the most expensive (average of $832). 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.

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 July 12, 2026.
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
7.8
Good
8,465 reviews

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.8

Food

7.2

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,465 reviews
Delta
7.8
Good
8,465 reviews

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.8

Food

7.2

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,815 reviews
Delta
7.8
Good
8,465 reviews

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.8

Food

7.2

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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 fly from Washington, D.C. Dulles Intl Airport to Saint Lucia in about 7h 10m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 2011 mi.

  • 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.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Saint Lucia?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Saint Lucia (average of $342). Flying from Washington, D.C. Dulles Intl Airport to Saint Lucia in November is currently the most expensive (average of $832). 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.

See more FAQs

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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 July 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$351Average$776FlexibilityNo cancel feeOn-time71%
DeltaCheapest$452Average$986FlexibilityNo cancel feeOn-timeN/A

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