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Saint Lucia

$230+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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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 January 29, 2026.

This American Airlines deal was found by Cheapflights users on 1/28. 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.
Wed 4/110:16 pm
SEA
-
UVF
1 stop13h 42m
American Airlines
Wed 4/82:35 pm
UVF
-
SEA
2 stops23h 16m
American Airlines
Deal found 1/28$517
This Delta deal was found by Cheapflights users on 1/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/93:59 pm
SEA
-
UVF
1 stop18h 59m
Delta
Wed 4/153:22 pm
UVF
-
SEA
1 stop21h 38m
Delta
Deal found 1/28$614
This Mytrip deal was found by Cheapflights users on 1/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/98:00 am
SEA
-
UVF
1 stop28h 20m
Air Canada
Wed 4/154:20 pm
UVF
-
SEA
2 stops25h 43m
Air Canada
Deal found 1/28$625
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 4/2110:29 pm
SEA
-
UVF
1 stop12h 54m
American Airlines
Wed 5/63:28 pm
UVF
-
SEA
2 stops21h 07m
American Airlines
Deal found 1/27$643
This FlightHub deal was found by Cheapflights users on 1/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/108:00 am
SEA
-
UVF
1 stop28h 25m
Air Canada
Mon 3/164:15 pm
UVF
-
SEA
1 stop33h 01m
Air Canada
Deal found 1/27$645
This Delta deal was found by Cheapflights users on 1/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/93:59 pm
SEA
-
UVF
1 stop18h 59m
Delta
Tue 4/143:22 pm
UVF
-
SEA
1 stop21h 38m
Delta
Deal found 1/28$710
This American Airlines deal was found by Cheapflights users on 1/28. 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.
Fri 11/61:53 pm
SEA
-
UVF
1 stop21h 07m
American Airlines
Fri 11/132:28 pm
UVF
-
SEA
2 stops23h 17m
American Airlines
Deal found 1/28$729
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:51 pm
SEA
-
UVF
2 stops14h 55m
Multiple Airlines
Tue 4/142:40 pm
UVF
-
SEA
1 stop31h 45m
Multiple Airlines
Deal found 1/27$749
This American Airlines deal was found by Cheapflights users on 1/28. 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.
Sun 3/110:16 pm
SEA
-
UVF
1 stop13h 42m
American Airlines
Sat 3/74:58 pm
UVF
-
SEA
2 stops20h 58m
American Airlines
Deal found 1/28$778
This Travelocity deal was found by Cheapflights users on 1/28. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:30 am
SEA
-
SLU
2 stops19h 00m
Multiple Airlines
Mon 7/137:10 pm
SLU
-
SEA
2 stops42h 22m
Multiple Airlines
Deal found 1/28$4,358

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 January 29, 2026.

Round-trip from

$517
(American Airlines)

One-way from

$230
(Mytrip)
From Seattle/Tacoma Intl to Saint Lucia
Search Deals
One-way flight from Seattle/Tacoma Intl to Saint Lucia
Search Deals

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 January 29, 2026.
Use the filters below to find and compare flights from Seattle to Saint Lucia that are best for you.

Fly from

Seattle

Fly to

Saint Lucia

Route

Depart

Return

Price

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 4/1

10:16 pm-2:58 pm

1 stop13h 42m

Castries Hewanorra

Wed 4/8

2:35 pm-10:51 am

2 stops23h 16m

$517

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Thu 4/9

3:59 pm-1:58 pm

1 stop18h 59m

Castries Hewanorra

Wed 4/15

3:22 pm-10:00 am

1 stop21h 38m

$614

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 4/21

10:29 pm-2:23 pm

1 stop12h 54m

Castries Hewanorra

Wed 5/6

3:28 pm-9:35 am

2 stops21h 07m

$643

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 3/10

8:00 am-3:25 pm

1 stop28h 25m

Castries Hewanorra

Mon 3/16

4:15 pm-3:01 pm

2 stops25h 46m

$645

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Thu 4/9

3:59 pm-1:58 pm

1 stop18h 59m

Castries Hewanorra

Tue 4/14

3:22 pm-10:00 am

1 stop21h 38m

$710

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 4/8

7:51 pm-1:46 pm

2 stops14h 55m

Castries Hewanorra

Tue 4/14

2:40 pm-7:25 pm

1 stop31h 45m

$749

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sun 3/1

7:29 pm-3:58 pm

2 stops16h 29m

Castries Hewanorra

Sat 3/7

4:58 pm-9:56 am

2 stops20h 58m

$778

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Thu 4/9

5:00 pm-1:35 pm

2 stops17h 35m

Castries Hewanorra

Tue 4/14

3:21 pm-10:51 am

2 stops22h 30m

$790

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Tue 7/7

11:30 am-9:30 am

2 stops19h 00m

Castries George F. L. Charle

Mon 7/13

7:10 pm-10:32 am

2 stops42h 22m

$4,358

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 4/8

10:10 am-3:25 pm

2 stops26h 15m

$230

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 15 results
1
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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 January 29, 2026.
See what other customers who have flown with 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.
American Airlines
7.2
Good
11,205 reviews

Comfort

7.2

Crew

8.0

Food

6.4

Overall

7.2

Entertainment

6.9

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,205 reviews
American Airlines
7.2
Good
11,205 reviews

Comfort

7.2

Crew

8.0

Food

6.4

Overall

7.2

Entertainment

6.9

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

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 13h 42m. Fly via American Airlines, Delta, or Air Canada 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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Alternative routes for Seattle 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 Seattle to Saint Lucia

Discover the top airline 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$668Average$839FlexibilityNo cancel feeOn-time71%

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