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Saint Lucia

$146+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — UVF
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
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 February 13, 2026.

This FlightHub deal was found by Cheapflights users on 2/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2710:09 pm
IAD
-
UVF
2 stops39h 56m
Air Canada
Tue 6/23:05 pm
UVF
-
IAD
1 stop23h 05m
Air Canada
Deal found 2/10$397
This Air Canada deal was found by Cheapflights users on 2/9. 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 6/14:10 pm
IAD
-
UVF
1 stop22h 00m
Air Canada
Fri 6/53:05 pm
UVF
-
IAD
1 stop29h 24m
Air Canada
Deal found 2/9$398
This FlightHub deal was found by Cheapflights users on 2/9. 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.
Thu 5/285:16 pm
IAD
-
UVF
2 stops20h 49m
Air Canada
Tue 6/23:05 pm
UVF
-
IAD
2 stops25h 15m
Air Canada
Deal found 2/9$401
This Air Canada deal was found by Cheapflights users on 2/13. 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.
Wed 4/154:30 pm
IAD
-
UVF
1 stop22h 55m
Air Canada
Thu 4/234:15 pm
UVF
-
IAD
1 stop23h 24m
Air Canada
Deal found 2/13$411
This Air Canada deal was found by Cheapflights users on 2/9. 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.
Wed 4/84:30 pm
IAD
-
UVF
1 stop22h 55m
Air Canada
Mon 4/134:05 pm
UVF
-
IAD
1 stop23h 34m
Air Canada
Deal found 2/9$414
This Air Canada deal was found by Cheapflights users on 2/13. 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 4/234:30 pm
IAD
-
UVF
1 stop22h 50m
Air Canada
Sun 4/264:05 pm
UVF
-
IAD
1 stop22h 19m
Air Canada
Deal found 2/13$416
This Air Canada deal was found by Cheapflights users on 2/10. 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.
Wed 4/84:30 pm
IAD
-
UVF
1 stop22h 55m
Air Canada
Wed 4/154:20 pm
UVF
-
IAD
2 stops15h 30m
Air Canada
Deal found 2/10$419
This Air Canada deal was found by Cheapflights users on 2/11. 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.
Mon 4/2012:38 pm
IAD
-
UVF
2 stops50h 42m
Air Canada
Wed 4/294:20 pm
UVF
-
IAD
2 stops29h 05m
Air Canada
Deal found 2/11$421
This Booking.com deal was found by Cheapflights users on 2/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/125:10 pm
IAD
-
UVF
2 stops22h 00m
Air Canada
Wed 4/154:20 pm
UVF
-
IAD
2 stops18h 57m
Air Canada
Deal found 2/11$425
This Air Canada deal was found by Cheapflights users on 2/12. 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 8/241:00 pm
IAD
-
UVF
2 stops25h 20m
Air Canada
Fri 8/283:15 pm
UVF
-
IAD
1 stop24h 14m
Air Canada
Deal found 2/12$428
This Air Canada deal was found by Cheapflights users on 2/10. 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.
Tue 3/34:30 pm
IAD
-
UVF
1 stop22h 55m
Air Canada
Wed 3/114:20 pm
UVF
-
IAD
2 stops19h 24m
Air Canada
Deal found 2/10$429
This Mytrip deal was found by Cheapflights users on 2/13. 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 2/239:00 am
IAD
-
SLU
2 stops32h 25m
Multiple Airlines
Fri 2/277:10 pm
SLU
-
IAD
2 stops26h 19m
Multiple Airlines
Deal found 2/13$788

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 February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$397
(Air Canada)

One-way from

$146
(Air Canada)

Popular in

November

Cheapest in

December

Average price

$583
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. 13% potential increase in price ($124 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($105 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 13, 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

Dulles Intl

Fly to

Saint Lucia

Route

Depart

Return

Price

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 4/8

4:30 pm-3:25 pm

1 stop22h 55m

Castries Hewanorra

Wed 4/15

4:20 pm-3:39 pm

1 stop23h 19m

$414

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Thu 4/9

5:10 pm-3:20 pm

2 stops22h 10m

Castries Hewanorra

Mon 4/13

4:05 pm-3:39 pm

1 stop23h 34m

$419

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Tue 3/31

5:10 pm-3:20 pm

2 stops22h 10m

Castries Hewanorra

Thu 4/2

4:15 pm-4:30 pm

2 stops24h 15m

$434

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 3/4

9:00 am-4:25 pm

1 stop30h 25m

Castries Hewanorra

Wed 3/11

4:20 pm-8:26 pm

1 stop28h 06m

$434

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 3/4

9:00 am-4:25 pm

1 stop30h 25m

Castries Hewanorra

Thu 3/12

4:15 pm-4:11 pm

2 stops23h 56m

$434

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 2/25

4:30 pm-4:25 pm

1 stop22h 55m

Castries Hewanorra

Wed 3/4

5:25 pm-3:46 pm

1 stop23h 21m

$481

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Tue 2/24

12:43 pm-4:20 pm

2 stops26h 37m

Castries Hewanorra

Thu 2/26

5:15 pm-8:29 pm

1 stop28h 14m

$491

Washington, D.C.Castries

IAD - SLU

IADSLU

Washington, D.C. Dulles Intl

Mon 2/23

9:00 am-6:25 pm

2 stops32h 25m

Castries George F. L. Charle

Fri 2/27

7:10 pm-8:29 pm

2 stops26h 19m

$788

Washington, D.C.Castries

IAD - SLU

IADSLU

Washington, D.C. Dulles Intl

Fri 3/6

9:00 am-1:10 pm

2 stops27h 10m

Castries George F. L. Charle

Sun 3/8

6:45 pm-8:26 pm

2 stops25h 41m

$829

Washington, D.C.Castries

IAD - SLU

IADSLU

Washington, D.C. Dulles Intl

Sun 5/24

4:10 pm-6:25 pm

2 stops26h 15m

Castries George F. L. Charle

Sun 5/31

6:00 pm-3:34 pm

2 stops21h 34m

$875

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 21 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 month to book a flight from Washington, D.C. Dulles Intl Airport to Saint Lucia?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Saint Lucia (average of $347). Flying from Washington, D.C. Dulles Intl Airport to Saint Lucia in June is currently the most expensive (average of $1,361). 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 February 13, 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
7.9
Good
8,203 reviews

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

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
8,203 reviews
Delta
7.9
Good
8,203 reviews

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

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
11,288 reviews
Delta
7.9
Good
8,203 reviews

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

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 Air Canada fly from Washington, D.C. Dulles Intl Airport to Saint Lucia in about 39h 55m. 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Saint Lucia (average of $347). Flying from Washington, D.C. Dulles Intl Airport to Saint Lucia in June is currently the most expensive (average of $1,361). 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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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 February 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$351Average$762FlexibilityNo cancel feeOn-time71%
DeltaCheapest$452Average$920FlexibilityNo cancel feeOn-timeN/A

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