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Saint Lucia

$418+ Cheap flights from Washington 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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from Washington to Saint Lucia

Keep the following information in mind while searching for Washington to Saint Lucia flight deals. Data was last updated August 20, 2025.

Round-trip from

$525
(American Airlines)

One-way from

$418
(Delta)
From Washington to Saint Lucia
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One-way flight from Washington to Saint Lucia
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Find flight deals from Washington to Saint Lucia

Cheapest flights from Washington to Saint Lucia
Explore the most affordable flight options available from Washington to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This American Airlines deal was found by Cheapflights users on 8/18. 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.
Tue 12/911:03 pmSEA - UVF
1 stop9h 57mAmerican Airlines
Mon 12/154:20 pmUVF - SEA
2 stops22h 18mAmerican Airlines
Deal found 8/18$530
This Booking.com deal was found by Cheapflights users on 8/18. 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.
Tue 12/98:15 amSEA - UVF
1 stop28h 10mAir Canada
Mon 12/155:15 pmUVF - SEA
1 stop32h 41mAir Canada
Deal found 8/18$586
This FlightHub deal was found by Cheapflights users on 8/18. 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.
Mon 12/18:00 pmSEA - UVF
2 stops40h 25mAir Canada
Wed 12/105:15 pmUVF - SEA
1 stop32h 41mAir Canada
Deal found 8/18$614
This Expedia deal was found by Cheapflights users on 8/18. 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 10/211:59 pmSEA - UVF
1 stop33h 47mJetBlue
Thu 10/93:05 pmUVF - SEA
1 stop34h 05mJetBlue
Deal found 8/18$622
This American Airlines deal was found by Cheapflights users on 8/18. 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 12/110:08 pmSEA - UVF
1 stop11h 13mAmerican Airlines
Wed 12/103:05 pmUVF - SEA
1 stop12h 17mAmerican Airlines
Deal found 8/18$634
This American Airlines deal was found by Cheapflights users on 8/18. 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 10/25:47 pmSEA - UVF
2 stops17h 30mAmerican Airlines
Thu 10/92:40 pmUVF - SEA
2 stops21h 46mAmerican Airlines
Deal found 8/18$681
This Expedia deal was found by Cheapflights users on 8/19. 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.
Sat 10/411:59 pmSEA - UVF
1 stop11h 11mJetBlue
Sun 10/123:35 pmUVF - SEA
1 stop33h 35mJetBlue
Deal found 8/19$723
This American Airlines deal was found by Cheapflights users on 8/19. 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 11/61:47 pmPDX - UVF
2 stops19h 34mAmerican Airlines
Mon 11/102:28 pmUVF - PDX
2 stops24h 21mAmerican Airlines
Deal found 8/19$752
This American Airlines deal was found by Cheapflights users on 8/19. 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 10/911:56 pmSEA - UVF
1 stop10h 44mAmerican Airlines
Mon 10/132:56 pmUVF - SEA
2 stops23h 34mAmerican Airlines
Deal found 8/19$761
This American Airlines deal was found by Cheapflights users on 8/19. 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 10/98:49 pmSEA - UVF
1 stop14h 07mAmerican Airlines
Sun 10/122:40 pmUVF - SEA
1 stop33h 14mAmerican Airlines
Deal found 8/19$766
This Trip.com deal was found by Cheapflights users on 8/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/102:35 pmSEA - SLU
3 stops28h 35mMultiple Airlines
Mon 10/134:35 pmSLU - SEA
2 stops31h 30mMultiple Airlines
Deal found 8/19$773
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Tue 8/2611:59 pmSEA - UVF
1 stop10h 46mAmerican Airlines
Tue 9/23:35 pmUVF - SEA
2 stops22h 44mAmerican Airlines
Deal found 8/19$780

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 August 20, 2025.
Use the filters below to find and compare flights from Washington to Saint Lucia that are best for you.

Fly from

Washington

Fly to

Saint Lucia

Route

Depart

Return

Price

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sun 1/18

10:57 pm-3:50 pm

1 stop12h 53m

Castries Hewanorra

Thu 1/29

5:10 pm-11:56 am

1 stop22h 46m

$525

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 1/6

6:22 pm-2:30 pm

2 stops16h 08m

Castries Hewanorra

Tue 1/13

3:35 pm-9:36 am

2 stops22h 01m

$530

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 12/9

11:03 pm-1:00 pm

1 stop9h 57m

Castries Hewanorra

Mon 12/15

4:20 pm-10:38 am

2 stops22h 18m

$530

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 12/9

8:15 am-4:25 pm

1 stop28h 10m

Castries Hewanorra

Mon 12/15

5:15 pm-9:56 pm

1 stop32h 41m

$586

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 12/1

8:00 pm-4:25 pm

2 stops40h 25m

Castries Hewanorra

Wed 12/10

5:15 pm-9:56 pm

1 stop32h 41m

$614

PortlandCastries

PDX - UVF

PDXUVF

Portland

Wed 1/21

1:45 pm-3:04 pm

2 stops21h 19m

Castries Hewanorra

Fri 1/30

4:24 pm-4:51 pm

2 stops28h 27m

$702

PortlandCastries

PDX - UVF

PDXUVF

Portland

Wed 1/21

10:55 pm-3:50 pm

1 stop12h 55m

Castries Hewanorra

Fri 1/30

3:35 pm-12:20 pm

2 stops24h 45m

$727

PortlandCastries

PDX - UVF

PDXUVF

Portland

Sun 2/1

10:55 pm-3:50 pm

1 stop12h 55m

Castries Hewanorra

Sun 2/8

4:50 pm-12:20 pm

2 stops23h 30m

$732

PortlandCastries

PDX - UVF

PDXUVF

Portland

Thu 11/6

10:15 pm-3:50 pm

2 stops13h 35m

Castries Hewanorra

Mon 11/10

4:05 pm-11:09 am

2 stops23h 04m

$752

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Fri 10/10

2:35 pm-10:10 pm

3 stops28h 35m

Castries George F. L. Charle

Mon 10/13

4:35 pm-9:05 pm

2 stops31h 30m

$773

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 23 results
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Best time to book a flight from Washington to Saint Lucia

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

What is the cheapest month to book a flight from State of Washington to Saint Lucia?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Saint Lucia (average of $556). Flying from State of Washington to Saint Lucia in December is currently the most expensive (average of $730). 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.

What is the cheapest time of day to fly from WA to LC?

Find hourly flight availability from Washington 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 August 20, 2025.

When flying from State of Washington to Saint Lucia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Washington 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 State of Washington to Saint Lucia?

    Departing from State of Washington to Saint Lucia will take you 12h 53m. The distance between State of Washington and Saint Lucia is about 4189 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from State of Washington to Saint Lucia one-way?

    The cheapest airlines for a one-way flight from State of Washington to Saint Lucia are Delta ($418), American Airlines ($483), and WestJet ($576).

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

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

  • How can I find direct flights from Washington 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 to Saint Lucia.

  • Can I find deals for business class flights from Washington to Saint Lucia?

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Saint Lucia?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Saint Lucia (average of $556). Flying from State of Washington to Saint Lucia in December is currently the most expensive (average of $730). 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.

Alternative routes for Washington to Saint Lucia

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Washington to Saint Lucia

Discover the top airline that operate flights from Washington 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$572Average$781FlexibilityNo cancel feeOn-time71%

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