Saint Lucia

$280+ Cheap flights from Seattle (SEA) 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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Jun 10 — Jun 171
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Cheap flight deals from Seattle to Saint Lucia

Cheapest flights from Seattle to Saint Lucia
Explore the most affordable flight options available from Seattle to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 11, 2026.

This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:55 pm
SEA
-
UVF
1 stop19h 15m
Delta
Wed 11/184:25 pm
UVF
-
SEA
1 stop22h 01m
Delta
Deal found 5/10$602
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:05 am
SEA
-
UVF
2 stops29h 45m
American Airlines
Wed 11/182:28 pm
UVF
-
SEA
1 stop13h 12m
American Airlines
Deal found 5/10$617
This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:55 pm
SEA
-
UVF
1 stop19h 15m
Delta
Wed 11/184:25 pm
UVF
-
SEA
1 stop22h 01m
Delta
Deal found 5/10$656
This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:55 pm
SEA
-
UVF
1 stop19h 15m
Delta
Tue 11/174:25 pm
UVF
-
SEA
1 stop22h 01m
Delta
Deal found 5/10$669
This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/103:55 pm
SEA
-
UVF
1 stop19h 15m
Delta
Wed 11/184:25 pm
UVF
-
SEA
1 stop22h 01m
Delta
Deal found 5/10$710
This FlightHub deal was found by Cheapflights users on 5/10. 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.
Thu 8/68:00 am
SEA
-
UVF
1 stop27h 20m
Air Canada
Tue 8/113:05 pm
UVF
-
SEA
1 stop33h 02m
Air Canada
Deal found 5/10$720
This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:55 pm
SEA
-
UVF
1 stop19h 15m
Delta
Tue 11/174:25 pm
UVF
-
SEA
1 stop22h 01m
Delta
Deal found 5/10$724
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:08 pm
SEA
-
UVF
1 stop13h 42m
American Airlines
Tue 11/174:50 pm
UVF
-
SEA
1 stop34h 50m
American Airlines
Deal found 5/10$736
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:05 am
SEA
-
UVF
2 stops29h 45m
American Airlines
Mon 11/232:28 pm
UVF
-
SEA
2 stops24h 25m
American Airlines
Deal found 5/10$741
This Expedia deal was found by Cheapflights users on 5/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:10 am
SEA
-
UVF
1 stop28h 15m
Air Canada
Mon 11/235:25 pm
UVF
-
SEA
1 stop32h 51m
Air Canada
Deal found 5/11$742
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:05 am
SEA
-
UVF
2 stops29h 45m
American Airlines
Sun 11/224:04 pm
UVF
-
SEA
1 stop32h 55m
American Airlines
Deal found 5/10$746
This Delta deal was found by Cheapflights users on 5/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/93:55 pm
SEA
-
UVF
1 stop19h 15m
Delta
Wed 11/184:25 pm
UVF
-
SEA
1 stop22h 01m
Delta
Deal found 5/10$752

Find flight deals from Seattle to Saint Lucia

Keep the following information in mind while searching for Seattle to Saint Lucia flight deals. Data was last updated May 11, 2026.

Round-trip from

$720
(FlightHub)

One-way from

$280
(American Airlines)
From Seattle/Tacoma Intl to Saint Lucia
One-way flight from Seattle/Tacoma Intl to Saint Lucia

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 May 11, 2026.
Use the filters below to find and compare flights from Seattle to Saint Lucia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Thu 8/6

8:00 am-2:20 pm

1 stop27h 20m

Castries Hewanorra

Tue 8/11

3:05 pm-9:07 pm

1 stop33h 02m

$720
Quickest round-trip

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 11/7

1:53 pm-3:00 pm

1 stop21h 07m

Castries Hewanorra

Thu 11/19

2:28 pm-11:40 pm

1 stop13h 12m

$817

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Fri 6/5

10:30 am-1:40 pm

2 stops48h 10m

Castries Hewanorra

Fri 6/12

3:05 pm-9:08 pm

1 stop33h 03m

$895

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 5/23

5:00 pm-2:05 pm

1 stop18h 05m

Castries Hewanorra

Sat 5/30

3:25 pm-10:05 am

1 stop21h 40m

$927

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 11/7

10:35 am-4:25 pm

2 stops25h 50m

Castries Hewanorra

Sun 11/22

5:25 pm-10:16 pm

1 stop32h 51m

$945

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 11/7

3:55 pm-3:26 pm

1 stop19h 31m

Castries Hewanorra

Tue 11/17

4:25 pm-10:26 am

1 stop22h 01m

$949

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Fri 6/5

9:40 pm-1:40 pm

2 stops37h 00m

Castries Hewanorra

Wed 6/10

2:10 pm-8:40 pm

1 stop33h 30m

$1,060

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 5/23

10:30 am-1:40 pm

2 stops24h 10m

Castries Hewanorra

Sat 5/30

2:10 pm-8:56 pm

1 stop33h 46m

$1,231

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Tue 7/14

7:35 pm-7:00 pm

3 stops20h 25m

Castries George F. L. Charle

Tue 7/21

7:10 pm-5:07 pm

3 stops24h 57m

$1,556

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Fri 7/3

10:45 am-10:10 pm

3 stops32h 25m

Castries George F. L. Charle

Mon 7/6

12:35 pm-6:45 pm

3 stops33h 10m

$1,593

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/8

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from Seattle to Saint Lucia

Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from Seattle 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 Seattle to Saint Lucia
No data available for this route at this time. Please check back soon.

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 May 11, 2026.
See what other customers who have flown with Delta and American Airlines from Seattle to Saint Lucia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Comfort

7.8

Entertainment

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

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Comfort

7.8

Entertainment

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

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Comfort

7.8

Entertainment

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 Seattle to Saint Lucia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Seattle to Saint Lucia?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Saint Lucia from Seattle.

  • How long is the flight from Seattle to Saint Lucia?

    There are many flights that can get you from Seattle to Saint Lucia in 18h 05m. Fly via Air Canada, American Airlines, or Delta to get the fastest option. There are 4189 mi between Seattle and Saint Lucia. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

  • How can I find direct flights from Seattle to Saint Lucia?

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

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

    Yes. Cheapflights offers flight deals from Seattle 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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Top 2 airlines flying from Seattle to Saint Lucia

Discover the top 2 airlines that operate flights from Seattle 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 May 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$264Average$1,210FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$752Average$921FlexibilityNo cancel feeOn-time71%

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