HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Saint Lucia

$144+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — UVF
Apr 16 — Apr 231
Thu 4/16
Thu 4/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Saint Lucia 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.

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 March 17, 2026.

This Expedia deal was found by Cheapflights users on 3/15. 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.
Thu 6/119:55 am
IAD
-
UVF
1 stop28h 15m
Air Canada
Tue 6/163:05 pm
UVF
-
IAD
1 stop29h 24m
Air Canada
Deal found 3/15$372
This Expedia deal was found by Cheapflights users on 3/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/273:45 pm
IAD
-
UVF
2 stops46h 20m
Air Canada
Tue 6/23:05 pm
UVF
-
IAD
2 stops23h 58m
Air Canada
Deal found 3/13$379
This FlightHub deal was found by Cheapflights users on 3/16. 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 6/1710:10 pm
IAD
-
UVF
2 stops40h 10m
Air Canada
Tue 6/233:05 pm
UVF
-
IAD
1 stop24h 19m
Air Canada
Deal found 3/16$392
This Flighttix deal was found by Cheapflights users on 3/15. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/610:07 pm
IAD
-
UVF
2 stops41h 13m
Air Canada
Thu 4/94:15 pm
UVF
-
IAD
2 stops19h 35m
Air Canada
Deal found 3/15$466
This Expedia deal was found by Cheapflights users on 3/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/99:00 am
IAD
-
UVF
1 stop30h 20m
Air Canada
Mon 4/134:05 pm
UVF
-
IAD
1 stop28h 24m
Air Canada
Deal found 3/13$472
This Mytrip deal was found by Cheapflights users on 3/16. 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.
Tue 3/179:55 am
IAD
-
SLU
2 stops33h 05m
Multiple Airlines
Tue 3/247:10 pm
SLU
-
IAD
2 stops20h 36m
Multiple Airlines
Deal found 3/16$902
This Mytrip deal was found by Cheapflights users on 3/13. 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.
Thu 4/99:55 am
IAD
-
SLU
2 stops31h 20m
Multiple Airlines
Thu 4/165:50 pm
SLU
-
IAD
2 stops21h 49m
Multiple Airlines
Deal found 3/13$931
This Mytrip deal was found by Cheapflights users on 3/16. 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.
Tue 4/78:20 am
IAD
-
SLU
2 stops28h 05m
Multiple Airlines
Sun 4/126:00 pm
SLU
-
IAD
2 stops26h 29m
Multiple Airlines
Deal found 3/16$983
This Mytrip deal was found by Cheapflights users on 3/14. 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 4/119:55 am
IAD
-
SLU
2 stops33h 05m
Multiple Airlines
Sat 4/185:50 pm
SLU
-
IAD
2 stops23h 24m
Multiple Airlines
Deal found 3/14$1,009
This Mytrip deal was found by Cheapflights users on 3/14. 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.
Thu 5/149:55 am
IAD
-
SLU
2 stops28h 40m
Multiple Airlines
Sun 5/176:00 pm
SLU
-
IAD
2 stops21h 29m
Multiple Airlines
Deal found 3/14$1,120
This Mytrip deal was found by Cheapflights users on 3/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/215:15 pm
IAD
-
SLU
2 stops25h 10m
Multiple Airlines
Sun 6/286:00 pm
SLU
-
IAD
2 stops21h 24m
Multiple Airlines
Deal found 3/11$1,121

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 March 17, 2026.

Round-trip from

$372
(Expedia)

One-way from

$144
(FlightHub)

Popular in

November

Cheapest in

June

Average price

$747
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. 17% potential increase in price ($160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($98 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 17, 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

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 5/13

6:08 am-2:05 pm

1 stop7h 57m

Castries Hewanorra

Tue 5/19

3:25 pm-12:51 am

1 stop9h 26m

$796

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Fri 4/10

6:01 am-1:58 pm

1 stop7h 57m

Castries Hewanorra

Tue 4/14

3:22 pm-12:42 am

1 stop9h 20m

$881

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Mon 3/30

6:01 am-1:58 pm

1 stop7h 57m

Castries Hewanorra

Wed 4/8

3:18 pm-9:10 am

1 stop17h 52m

$906

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Fri 5/22

6:08 am-2:05 pm

1 stop7h 57m

Castries Hewanorra

Wed 5/27

3:25 pm-12:51 am

1 stop9h 26m

$921

Washington, D.C.Castries

IAD - SLU

IADSLU

Washington, D.C. Dulles Intl

Thu 4/9

9:55 am-5:15 pm

2 stops31h 20m

Castries George F. L. Charle

Thu 4/16

5:50 pm-3:39 pm

2 stops21h 49m

$931

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Fri 5/1

6:00 am-2:02 pm

1 stop8h 02m

Castries Hewanorra

Tue 5/5

3:22 pm-12:42 am

1 stop9h 20m

$931
Quickest round-trip

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 4/29

6:00 am-2:02 pm

1 stop8h 02m

Castries Hewanorra

Sat 5/2

3:22 pm-12:27 am

1 stop9h 05m

$941

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 4/8

6:01 am-1:58 pm

1 stop7h 57m

Castries Hewanorra

Wed 4/15

3:22 pm-12:42 am

1 stop9h 20m

$956

Washington, D.C.Castries

IAD - SLU

IADSLU

Washington, D.C. Dulles Intl

Tue 4/7

8:20 am-12:25 pm

2 stops28h 05m

Castries George F. L. Charle

Sun 4/12

6:00 pm-8:29 pm

2 stops26h 29m

$983

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Sat 4/25

6:00 am-2:02 pm

1 stop8h 02m

Castries Hewanorra

Sat 5/2

3:22 pm-12:27 am

1 stop9h 05m

$1,056

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/14

Showing 1-10 of 29 resultsSorted by cheapest first
1
2
3

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 March 17, 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
8,288 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Overall

7.9

Food

7.2

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
8,288 reviews
Delta
7.9
Good
8,288 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Overall

7.9

Food

7.2

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
7.1
Good
11,468 reviews
Delta
7.9
Good
8,288 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Overall

7.9

Food

7.2

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 fly from Washington, D.C. Dulles Intl Airport to Saint Lucia in about 7h 57m. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 March 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$351Average$714FlexibilityNo cancel feeOn-time71%
DeltaCheapest$452Average$986FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights