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Saint Lucia

$340+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Apr 19 — Apr 261
Sun 4/19
Sun 4/26
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 March 20, 2026.

This FlightHub deal was found by Cheapflights users on 3/16. 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.
Fri 5/2911:52 pm
SEA
-
UVF
1 stop12h 27m
Multiple Airlines
Fri 6/53:05 pm
UVF
-
SEA
2 stops30h 25m
Multiple Airlines
Deal found 3/16$573
This Mytrip deal was found by Cheapflights users on 3/15. 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 4/88:00 am
SEA
-
UVF
1 stop28h 25m
Air Canada
Mon 4/134:05 pm
UVF
-
SEA
1 stop32h 48m
Air Canada
Deal found 3/15$587
This Expedia deal was found by Cheapflights users on 3/19. 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.
Sun 6/711:52 pm
SEA
-
UVF
1 stop12h 27m
JetBlue
Thu 6/111:47 pm
UVF
-
SEA
1 stop34h 18m
JetBlue
Deal found 3/19$610
This Gotogate deal was found by Cheapflights users on 3/17. 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.
Wed 4/1510:20 am
SEA
-
UVF
2 stops26h 05m
Air Canada
Wed 4/224:20 pm
UVF
-
SEA
2 stops25h 48m
Air Canada
Deal found 3/17$636
This Air Canada deal was found by Cheapflights users on 3/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/268:00 am
SEA
-
UVF
1 stop28h 20m
Air Canada
Thu 4/304:15 pm
UVF
-
SEA
1 stop31h 53m
Air Canada
Deal found 3/19$652
This American Airlines deal was found by Cheapflights users on 3/16. 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 11/115:54 pm
SEA
-
UVF
2 stops15h 27m
American Airlines
Sun 11/154:04 pm
UVF
-
SEA
2 stops21h 41m
American Airlines
Deal found 3/16$706
This American Airlines deal was found by Cheapflights users on 3/17. 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 11/310:08 pm
SEA
-
UVF
1 stop11h 13m
American Airlines
Sat 11/72:28 pm
UVF
-
SEA
1 stop13h 12m
American Airlines
Deal found 3/17$713
This Mytrip deal was found by Cheapflights users on 3/15. 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.
Sat 12/265:45 am
SEA
-
SLU
3 stops28h 50m
Multiple Airlines
Thu 12/315:50 pm
SLU
-
SEA
3 stops32h 26m
Multiple Airlines
Deal found 3/15$1,964
This Mytrip deal was found by Cheapflights users on 3/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:40 am
SEA
-
SLU
3 stops29h 55m
Multiple Airlines
Sat 9/265:50 pm
SLU
-
SEA
2 stops30h 14m
Multiple Airlines
Deal found 3/18$2,127
This Mytrip deal was found by Cheapflights users on 3/17. 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.
Sat 5/28:00 am
SEA
-
SLU
2 stops27h 35m
Multiple Airlines
Wed 5/610:15 am
SLU
-
SEA
2 stops37h 53m
Multiple Airlines
Deal found 3/17$3,244
This Expedia deal was found by Cheapflights users on 3/17. 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 10/318:10 am
SEA
-
SLU
2 stops27h 25m
Multiple Airlines
Sat 11/75:50 pm
SLU
-
SEA
2 stops32h 26m
Multiple Airlines
Deal found 3/17$4,329

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 March 20, 2026.

Round-trip from

$573
(FlightHub)

One-way from

$340
(American Airlines)
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 March 20, 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

Wed 4/8

8:00 am-3:25 pm

1 stop28h 25m

Castries Hewanorra

Mon 4/13

4:05 pm-9:53 pm

1 stop32h 48m

$587
Quickest round-trip

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 4/15

8:00 am-3:25 pm

1 stop28h 25m

Castries Hewanorra

Wed 4/22

4:20 pm-3:08 pm

2 stops25h 48m

$640

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sun 4/26

8:00 am-3:20 pm

1 stop28h 20m

Castries Hewanorra

Thu 4/30

4:15 pm-9:08 pm

1 stop31h 53m

$654

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sun 6/7

2:55 pm-2:10 pm

2 stops44h 15m

Castries Hewanorra

Thu 6/11

2:30 pm-9:50 am

2 stops22h 20m

$749

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Sat 5/2

8:00 am-2:35 pm

2 stops27h 35m

Castries George F. L. Charle

Wed 5/6

10:15 am-9:08 pm

2 stops37h 53m

$3,244
Cheapest one-way
Quickest one-way

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 9/15

6:21 pm-1:50 pm

2 stops16h 29m

$340

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/18

Sorted by cheapest first

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 March 20, 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
7.1
Good
11,481 reviews

Boarding

7.5

Comfort

7.2

Food

6.4

Entertainment

6.9

Overall

7.1

Crew

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,481 reviews
American Airlines
7.1
Good
11,481 reviews

Boarding

7.5

Comfort

7.2

Food

6.4

Entertainment

6.9

Overall

7.1

Crew

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

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 28h 25m. Fly via Air Canada to get the fastest option. There are 4189 mi between Seattle and Saint Lucia.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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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 March 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$729Average$848FlexibilityNo cancel feeOn-time71%

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