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$224+ Cheap flights from Washington, D.C. (WAS) 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — UVF
Jul 30 — Aug 61
Thu 7/30
Thu 8/6
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Saint Lucia

Cheapest flights from Washington, D.C. to Saint Lucia
Explore the most affordable flight options available from Washington, D.C. to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 30, 2026.

This Delta deal was found by Cheapflights users on 6/25. 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 7/75:40 am
BWI
-
UVF
1 stop8h 32m
Delta
Wed 7/153:33 pm
UVF
-
BWI
1 stop9h 06m
Delta
Deal found 6/25$548
This American Airlines deal was found by Cheapflights users on 6/25. 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 7/47:59 pm
BWI
-
UVF
2 stops17h 51m
American Airlines
Sat 7/113:32 pm
UVF
-
BWI
1 stop8h 42m
American Airlines
Deal found 6/25$553
This American Airlines deal was found by Cheapflights users on 6/25. 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.
Wed 8/266:52 pm
BWI
-
UVF
2 stops19h 27m
American Airlines
Mon 8/312:49 pm
UVF
-
BWI
2 stops20h 20m
American Airlines
Deal found 6/25$558
This American Airlines deal was found by Cheapflights users on 6/29. 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 7/46:39 pm
BWI
-
UVF
1 stop19h 11m
American Airlines
Tue 7/73:20 pm
UVF
-
BWI
1 stop18h 06m
American Airlines
Deal found 6/29$559
This Mytrip deal was found by Cheapflights users on 6/25. 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 10/2512:55 pm
DCA
-
UVF
2 stops26h 45m
Air Canada
Sun 11/15:40 pm
UVF
-
DCA
1 stop16h 18m
Air Canada
Deal found 6/25$559
This Justfly.com deal was found by Cheapflights users on 6/25. 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.
Sun 10/254:30 pm
IAD
-
UVF
1 stop23h 10m
Air Canada
Sun 11/15:40 pm
UVF
-
IAD
1 stop27h 30m
Air Canada
Deal found 6/25$559
This American Airlines deal was found by Cheapflights users on 6/25. 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.
Wed 8/127:24 pm
BWI
-
UVF
1 stop18h 55m
American Airlines
Thu 8/273:19 pm
UVF
-
BWI
1 stop7h 39m
American Airlines
Deal found 6/25$561
This American Airlines deal was found by Cheapflights users on 6/28. 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 7/46:39 pm
BWI
-
UVF
1 stop19h 11m
American Airlines
Wed 7/82:50 pm
UVF
-
BWI
2 stops18h 36m
American Airlines
Deal found 6/28$563
This American Airlines deal was found by Cheapflights users on 6/25. 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.
Wed 8/266:00 am
BWI
-
UVF
1 stop7h 49m
American Airlines
Tue 9/12:49 pm
UVF
-
BWI
1 stop19h 00m
American Airlines
Deal found 6/25$564
This American Airlines deal was found by Cheapflights users on 6/27. 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.
Wed 9/167:09 pm
BWI
-
UVF
2 stops18h 45m
American Airlines
Thu 9/243:02 pm
UVF
-
BWI
1 stop27h 28m
American Airlines
Deal found 6/27$568
This American Airlines deal was found by Cheapflights users on 6/27. 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.
Thu 10/157:09 pm
BWI
-
UVF
1 stop20h 21m
American Airlines
Tue 10/202:20 pm
UVF
-
BWI
1 stop27h 43m
American Airlines
Deal found 6/27$569
This American Airlines deal was found by Cheapflights users on 6/28. 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 11/305:46 pm
BWI
-
UVF
2 stops18h 35m
American Airlines
Mon 12/74:53 pm
UVF
-
BWI
2 stops19h 05m
American Airlines
Deal found 6/28$572

Find flight deals from Washington, D.C. to Saint Lucia

Keep the following information in mind while searching for Washington, D.C. to Saint Lucia flight deals. Data was last updated June 30, 2026.

Round-trip from

$548
(Delta)

One-way from

$224
(American Airlines)

Popular in

November

Cheapest in

December

Average price

$565
From Washington, D.C. (WAS) to Saint Lucia
Search Deals
One-way flight from Washington, D.C. (WAS) to Saint Lucia
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($178 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 19% potential price decrease ($158 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 June 30, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Saint Lucia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreCastries

BWI - UVF

BWIUVF

Baltimore/Washington

Wed 8/26

6:00 am-2:14 pm

1 stop8h 14m

Castries Hewanorra

Sat 8/29

3:34 pm-9:19 am

1 stop17h 45m

$548

BaltimoreCastries

BWI - UVF

BWIUVF

Baltimore/Washington

Sat 7/11

6:15 am-2:32 pm

1 stop8h 17m

Castries Hewanorra

Tue 7/14

1:15 pm-11:52 pm

1 stop10h 37m

$548

BaltimoreCastries

BWI - UVF

BWIUVF

Baltimore/Washington

Wed 8/26

6:00 am-2:14 pm

1 stop8h 14m

Castries Hewanorra

Mon 8/31

3:34 pm-9:19 am

1 stop17h 45m

$548

BaltimoreCastries

BWI - UVF

BWIUVF

Baltimore/Washington

Thu 8/27

7:00 am-2:14 pm

1 stop7h 14m

Castries Hewanorra

Wed 9/2

3:34 pm-9:19 am

1 stop17h 45m

$548

BaltimoreCastries

BWI - UVF

BWIUVF

Baltimore/Washington

Sat 8/29

6:00 am-2:14 pm

1 stop8h 14m

Castries Hewanorra

Thu 9/3

3:34 pm-9:19 am

1 stop17h 45m

$548

BaltimoreCastries

BWI - UVF

BWIUVF

Baltimore/Washington

Thu 8/27

7:00 am-2:14 pm

1 stop7h 14m

Castries Hewanorra

Tue 9/1

3:34 pm-9:19 am

1 stop17h 45m

$548

BaltimoreCastries

BWI - UVF

BWIUVF

Baltimore/Washington

Mon 8/24

7:00 am-2:14 pm

1 stop7h 14m

Castries Hewanorra

Fri 8/28

3:34 pm-9:58 am

1 stop18h 24m

$548

BaltimoreCastries

BWI - UVF

BWIUVF

Baltimore/Washington

Tue 8/25

7:00 am-2:14 pm

1 stop7h 14m

Castries Hewanorra

Sat 8/29

3:34 pm-9:19 am

1 stop17h 45m

$548

BaltimoreCastries

BWI - UVF

BWIUVF

Baltimore/Washington

Fri 8/28

7:00 am-2:14 pm

1 stop7h 14m

Castries Hewanorra

Fri 9/4

3:34 pm-9:58 am

1 stop18h 24m

$548

BaltimoreCastries

BWI - UVF

BWIUVF

Baltimore/Washington

Sat 7/4

10:29 am-1:50 pm

2 stops27h 21m

Castries Hewanorra

Tue 7/7

1:15 pm-9:26 am

2 stops20h 11m

$553

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from Washington, D.C. to Saint Lucia

Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from Washington, D.C. 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. to Saint Lucia

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

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. to Saint Lucia (average of $70). Flying from Washington, D.C. to Saint Lucia in May is currently the most expensive (average of $518). 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.

How far ahead should I book a flight from Washington, D.C. to Saint Lucia?

Booking 35 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Saint Lucia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 June 30, 2026.
Read through reviews of airlines operating flights from Washington, D.C. to Saint Lucia, such as Delta,American Airlines, andAir Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,450 reviews

Boarding

8.1

Food

7.2

Overall

7.8

Entertainment

7.8

Crew

8.5

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
8,450 reviews
Delta
7.8
Good
8,450 reviews

Boarding

8.1

Food

7.2

Overall

7.8

Entertainment

7.8

Crew

8.5

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
11,764 reviews
Delta
7.8
Good
8,450 reviews

Boarding

8.1

Food

7.2

Overall

7.8

Entertainment

7.8

Crew

8.5

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
Air Canada
7.1
Good
11,272 reviews
Delta
7.8
Good
8,450 reviews

Boarding

8.1

Food

7.2

Overall

7.8

Entertainment

7.8

Crew

8.5

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
JetBlue
7.1
Good
3,013 reviews
Delta
7.8
Good
8,450 reviews

Boarding

8.1

Food

7.2

Overall

7.8

Entertainment

7.8

Crew

8.5

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 Washington, D.C. 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. to Saint Lucia?

    Airlines like Delta and JetBlue fly from Washington, D.C. to Saint Lucia in about 8h 14m. The time it takes to get you to your destination can typically vary by up to 1h 08m. The distance from Washington, D.C. to Saint Lucia is about 2000 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Washington, D.C. to Saint Lucia?

    The most popular route from Washington, D.C. to Saint Lucia is Washington, D.C. Dulles Intl - Castries Hewanorra. You may also consider Washington, D.C. Reagan-National - Castries Hewanorra or Baltimore/Washington - Castries Hewanorra.

  • Can I find deals for flights from Washington, D.C. to Saint Lucia that include hotel bookings?

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

  • How can I find direct flights from Washington, D.C. to Saint Lucia?

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

  • Can I find deals for business class flights from Washington, D.C. to Saint Lucia?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Saint Lucia?

    Currently, April is the cheapest month in which you can book a flight from Washington, D.C. to Saint Lucia (average of $70). Flying from Washington, D.C. to Saint Lucia in May is currently the most expensive (average of $518). 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

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Top 3 airlines flying from Washington, D.C. to Saint Lucia

Discover the top 3 airlines that operate flights from Washington, D.C. 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 June 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$179Average$601FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$351Average$775FlexibilityNo cancel feeOn-time71%
DeltaCheapest$452Average$896FlexibilityNo cancel feeOn-timeN/A

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