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Saint Lucia

$123+ 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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — UVF
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This American Airlines deal was found by Cheapflights users on 12/2. 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 12/68:05 pmIAD - UVF
1 stop17h 52mAmerican Airlines
Mon 12/84:00 pmUVF - IAD
1 stop8h 08mAmerican Airlines
Deal found 12/2$347
This Delta deal was found by Cheapflights users on 12/2. 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 12/27:01 amIAD - UVF
1 stop7h 35mDelta
Wed 12/104:56 pmUVF - IAD
1 stop8h 16mDelta
Deal found 12/2$467
This Air Canada deal was found by Cheapflights users on 12/4. 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 12/3010:08 pmIAD - UVF
2 stops17h 12mAir Canada
Mon 1/125:15 pmUVF - IAD
2 stops23h 58mAir Canada
Deal found 12/4$478
This Expedia deal was found by Cheapflights users on 12/2. 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.
Sun 12/74:30 pmIAD - UVF
1 stop22h 55mAir Canada
Wed 12/105:15 pmUVF - IAD
1 stop23h 31mAir Canada
Deal found 12/2$496
This Air Canada deal was found by Cheapflights users on 12/4. 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 12/3010:08 pmIAD - UVF
2 stops17h 12mAir Canada
Thu 1/85:15 pmUVF - IAD
2 stops29h 10mAir Canada
Deal found 12/4$513
This Air Canada deal was found by Cheapflights users on 12/4. 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 12/2910:08 pmIAD - UVF
2 stops41h 12mAir Canada
Mon 1/125:15 pmUVF - IAD
1 stop23h 31mAir Canada
Deal found 12/4$528
This Gotogate deal was found by Cheapflights users on 12/2. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/69:45 amIAD - UVF
2 stops29h 40mAir Canada
Mon 12/85:15 pmUVF - IAD
1 stop28h 11mAir Canada
Deal found 12/2$541
This Air Canada deal was found by Cheapflights users on 12/4. 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 12/2910:08 pmIAD - UVF
2 stops41h 12mAir Canada
Thu 1/85:15 pmUVF - IAD
2 stops23h 58mAir Canada
Deal found 12/4$563
This FlightHub deal was found by Cheapflights users on 12/2. 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.
Tue 12/29:45 amIAD - UVF
2 stops29h 35mAir Canada
Wed 12/105:15 pmUVF - IAD
1 stop23h 31mAir Canada
Deal found 12/2$663
This Delta deal was found by Cheapflights users on 12/2. 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 12/116:00 amIAD - UVF
1 stop8h 36mDelta
Tue 12/164:56 pmUVF - IAD
1 stop8h 16mDelta
Deal found 12/2$741
This Mytrip deal was found by Cheapflights users on 12/2. 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 12/179:45 amIAD - SLU
2 stops32h 15mMultiple Airlines
Wed 12/2412:35 pmSLU - IAD
3 stops32h 51mMultiple Airlines
Deal found 12/2$1,102
This Mytrip deal was found by Cheapflights users on 12/2. 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 12/179:45 amIAD - SLU
2 stops32h 15mMultiple Airlines
Mon 12/2212:35 pmSLU - IAD
3 stops24h 13mMultiple Airlines
Deal found 12/2$1,310

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$347
(Delta)

One-way from

$123
(Delta)

Popular in

November

Cheapest in

October

Average price

$1,465
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. 28% potential increase in price ($361 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($85 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 December 4, 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

Wed 1/14

6:20 am-3:05 pm

1 stop7h 45m

Castries Hewanorra

Wed 1/21

4:25 pm-9:13 am

1 stop17h 48m

$347

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Mon 1/12

6:20 am-3:05 pm

1 stop7h 45m

Castries Hewanorra

Wed 1/21

4:25 pm-12:24 am

1 stop8h 59m

$347

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 1/28

7:01 am-3:03 pm

1 stop7h 02m

Castries Hewanorra

Mon 2/2

5:02 pm-5:16 pm

2 stops25h 14m

$352

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Sat 1/24

5:46 pm-3:03 pm

1 stop20h 17m

Castries Hewanorra

Wed 1/28

5:02 pm-10:58 am

2 stops18h 56m

$418

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Wed 2/25

6:00 am-3:05 pm

1 stop8h 05m

Castries Hewanorra

Wed 3/4

4:25 pm-12:24 am

1 stop8h 59m

$461

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Tue 3/3

6:00 am-3:05 pm

1 stop8h 05m

Castries Hewanorra

Wed 3/11

3:24 pm-12:26 am

1 stop9h 02m

$461

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Mon 1/12

6:20 am-3:05 pm

1 stop7h 45m

Castries Hewanorra

Tue 1/20

4:25 pm-12:24 am

1 stop8h 59m

$467

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Tue 1/13

6:20 am-3:05 pm

1 stop7h 45m

Castries Hewanorra

Wed 1/21

4:25 pm-12:24 am

1 stop8h 59m

$467

Washington, D.C.Castries

IAD - UVF

IADUVF

Washington, D.C. Dulles Intl

Sun 1/11

4:30 pm-4:25 pm

1 stop22h 55m

Castries Hewanorra

Mon 1/19

5:15 pm-3:46 pm

1 stop23h 31m

$498

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-7:50 am

2 stops15h 30m

$504

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 32 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 December 4, 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 in the afternoon, which can drop the price by up to 42% 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 December 4, 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
8,011 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

7.9

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

7.9

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
11,045 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

7.9

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 7h 02m. The time it takes to get you to your destination can typically vary by up to 43m. 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$461Average$812FlexibilityNo cancel feeOn-time71%
DeltaCheapest$495Average$930FlexibilityNo cancel feeOn-timeN/A

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