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Saint Lucia

$512+ Cheap flights from Seattle (SEA) to Saint Lucia

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 February 3, 2026.

This American Airlines deal was found by Cheapflights users on 1/31. 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 3/210:16 pm
SEA
-
UVF
1 stop13h 42m
American Airlines
Mon 3/93:18 pm
UVF
-
SEA
1 stop23h 09m
American Airlines
Deal found 1/31$512
This Booking.com deal was found by Cheapflights users on 2/2. 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.
Thu 3/198:00 am
SEA
-
UVF
1 stop28h 25m
Air Canada
Thu 3/264:15 pm
UVF
-
SEA
1 stop33h 01m
Air Canada
Deal found 2/2$613
This Delta deal was found by Cheapflights users on 1/31. 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.
Fri 8/283:55 pm
SEA
-
UVF
1 stop19h 13m
Delta
Wed 9/23:28 pm
UVF
-
SEA
1 stop21h 37m
Delta
Deal found 1/31$614
This FlightHub deal was found by Cheapflights users on 2/3. 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 4/278:00 pm
SEA
-
UVF
2 stops40h 20m
Air Canada
Tue 5/53:15 pm
UVF
-
SEA
1 stop22h 05m
Air Canada
Deal found 2/3$624
This Booking.com deal was found by Cheapflights users on 2/1. 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.
Wed 3/188:00 am
SEA
-
UVF
1 stop28h 25m
Air Canada
Wed 3/254:20 pm
UVF
-
SEA
2 stops25h 41m
Air Canada
Deal found 2/1$631
This FlightHub deal was found by Cheapflights users on 2/2. 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
2 stops30h 01m
Air Canada
Deal found 2/2$654
This American Airlines deal was found by Cheapflights users on 2/1. 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 12/310:08 pm
SEA
-
UVF
1 stop11h 11m
American Airlines
Mon 12/74:05 pm
UVF
-
SEA
2 stops21h 37m
American Airlines
Deal found 2/1$664
This Expedia deal was found by Cheapflights users on 2/1. 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.
Fri 5/111:15 am
SEA
-
SLU
2 stops22h 55m
Multiple Airlines
Fri 5/86:00 pm
SLU
-
SEA
3 stops43h 20m
Multiple Airlines
Deal found 2/1$3,811

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 February 3, 2026.

Round-trip from

$512
(American Airlines)
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 February 3, 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

Mon 3/2

10:16 pm-3:58 pm

1 stop13h 42m

Castries Hewanorra

Mon 3/9

3:18 pm-11:27 am

1 stop23h 09m

$512

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Thu 3/19

8:00 am-3:25 pm

1 stop28h 25m

Castries Hewanorra

Thu 3/26

4:15 pm-10:16 pm

1 stop33h 01m

$613

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 4/27

8:00 pm-3:20 pm

2 stops40h 20m

Castries Hewanorra

Tue 5/5

3:15 pm-10:20 am

1 stop22h 05m

$624

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 3/18

8:00 am-3:25 pm

1 stop28h 25m

Castries Hewanorra

Wed 3/25

4:20 pm-10:16 pm

1 stop32h 56m

$631

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 3/10

3:40 pm-3:25 pm

2 stops20h 45m

Castries Hewanorra

Mon 3/16

4:15 pm-3:01 pm

2 stops25h 46m

$654

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Fri 5/1

11:15 am-1:10 pm

2 stops22h 55m

Castries George F. L. Charle

Fri 5/8

6:00 pm-10:20 am

3 stops43h 20m

$3,811

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/31

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 February 3, 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
11,216 reviews

Entertainment

6.9

Boarding

7.5

Comfort

7.2

Crew

8.0

Overall

7.2

Food

6.4

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
11,216 reviews
American Airlines
7.2
Good
11,216 reviews

Entertainment

6.9

Boarding

7.5

Comfort

7.2

Crew

8.0

Overall

7.2

Food

6.4

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 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$668Average$840FlexibilityNo cancel feeOn-time71%

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