HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Saint Lucia

$275+ 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Saint Lucia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 21, 2026.

This Booking.com deal was found by Cheapflights users on 1/21. 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 3/108:00 pm
SEA
-
UVF
2 stops16h 25m
Air Canada
Mon 3/164:15 pm
UVF
-
SEA
2 stops25h 46m
Air Canada
Deal found 1/21$578
This Orbitz deal was found by Cheapflights users on 1/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/298:00 pm
SEA
-
UVF
2 stops16h 25m
Air Canada
Tue 5/53:15 pm
UVF
-
SEA
1 stop22h 05m
Air Canada
Deal found 1/21$638
This Orbitz deal was found by Cheapflights users on 1/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/118:00 am
SEA
-
UVF
1 stop28h 10m
Air Canada
Mon 4/204:15 pm
UVF
-
SEA
2 stops25h 48m
Air Canada
Deal found 1/20$643
This Orbitz deal was found by Cheapflights users on 1/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/218:10 am
SEA
-
UVF
1 stop28h 15m
Air Canada
Sun 3/294:20 pm
UVF
-
SEA
1 stop32h 31m
Air Canada
Deal found 1/20$679
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Sat 4/186:40 pm
SEA
-
UVF
2 stops15h 55m
American Airlines
Tue 4/213:21 pm
UVF
-
SEA
2 stops22h 30m
American Airlines
Deal found 1/20$703
This FlightHub deal was found by Cheapflights users on 1/20. 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.
Sat 4/118:00 am
SEA
-
UVF
1 stop28h 10m
Air Canada
Sun 4/194:15 pm
UVF
-
SEA
1 stop32h 36m
Air Canada
Deal found 1/20$721
This Air Canada deal was found by Cheapflights users on 1/20. 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.
Fri 4/108:00 pm
SEA
-
UVF
2 stops40h 10m
Air Canada
Sun 4/194:15 pm
UVF
-
SEA
1 stop32h 36m
Air Canada
Deal found 1/20$759
This Air Canada deal was found by Cheapflights users on 1/20. 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 4/128:00 am
SEA
-
UVF
1 stop28h 10m
Air Canada
Sun 4/194:15 pm
UVF
-
SEA
1 stop32h 36m
Air Canada
Deal found 1/20$761
This Air Canada deal was found by Cheapflights users on 1/21. 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.
Mon 2/28:00 pm
SEA
-
UVF
2 stops40h 20m
Air Canada
Fri 2/65:15 pm
UVF
-
SEA
2 stops44h 00m
Air Canada
Deal found 1/21$779
This Gotogate deal was found by Cheapflights users on 1/20. 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.
Thu 4/28:00 am
SEA
-
SLU
2 stops27h 35m
Multiple Airlines
Sat 4/115:50 pm
SLU
-
SEA
2 stops31h 01m
Multiple Airlines
Deal found 1/20$2,218
This Expedia deal was found by Cheapflights users on 1/20. 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 4/108:00 am
SEA
-
SLU
2 stops35h 10m
Multiple Airlines
Sun 4/196:00 pm
SLU
-
SEA
2 stops54h 51m
Multiple Airlines
Deal found 1/20$3,801
This Travelocity deal was found by Cheapflights users on 1/21. 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.
Fri 2/138:00 am
SEA
-
SLU
2 stops34h 10m
Multiple Airlines
Mon 2/167:10 pm
SLU
-
SEA
2 stops55h 06m
Multiple Airlines
Deal found 1/21$4,178

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 21, 2026.

Round-trip from

$578
(Booking.com)

One-way from

$275
(Expedia)
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 21, 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

Tue 3/10

8:10 am-3:25 pm

1 stop28h 15m

Castries Hewanorra

Mon 3/16

4:15 pm-3:01 pm

2 stops25h 46m

$578

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 4/29

8:00 pm-3:25 pm

2 stops16h 25m

Castries Hewanorra

Tue 5/5

3:15 pm-10:20 am

1 stop22h 05m

$638

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 4/18

10:16 pm-1:35 pm

1 stop12h 19m

Castries Hewanorra

Tue 4/21

3:21 pm-10:51 am

2 stops22h 30m

$643

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 4/11

8:00 am-3:10 pm

1 stop28h 10m

Castries Hewanorra

Mon 4/20

4:15 pm-9:51 pm

1 stop32h 36m

$643

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sun 4/12

5:50 am-3:10 pm

2 stops30h 20m

Castries Hewanorra

Sun 4/19

4:15 pm-9:51 pm

1 stop32h 36m

$759

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Fri 4/10

8:00 pm-3:10 pm

2 stops40h 10m

Castries Hewanorra

Sun 4/19

4:15 pm-9:51 pm

1 stop32h 36m

$759

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Thu 4/2

8:00 am-2:35 pm

2 stops27h 35m

Castries George F. L. Charle

Sat 4/11

5:50 pm-9:51 pm

2 stops31h 01m

$2,218

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Fri 4/10

8:00 am-10:10 pm

2 stops35h 10m

Castries George F. L. Charle

Sun 4/19

5:00 am-9:51 pm

3 stops43h 51m

$3,801

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Sat 4/11

8:00 am-2:35 pm

2 stops27h 35m

Castries George F. L. Charle

Mon 4/20

7:10 pm-9:51 pm

2 stops53h 41m

$3,801

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Fri 2/13

8:00 am-10:10 pm

2 stops34h 10m

Castries George F. L. Charle

Mon 2/16

7:10 pm-10:16 pm

2 stops55h 06m

$4,178

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 22 results
1
2
3

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 21, 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
11,169 reviews

Boarding

7.5

Overall

7.2

Entertainment

6.9

Comfort

7.2

Crew

8.0

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
11,169 reviews
American Airlines
7.2
Good
11,169 reviews

Boarding

7.5

Overall

7.2

Entertainment

6.9

Comfort

7.2

Crew

8.0

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 28h 15m. 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Saint Lucia

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Luis Munoz Marin Intl flights
Portland to Luis Munoz Marin Intl flights
Seattle to Punta Cana flights
Seattle to Nassau flights
Seattle to Saint Thomas Island flights
Seattle to Oranjestad flights
Seattle to Simpson Bay flights
Seattle to Bridgetown flights
Portland to Saint Thomas Island flights
Seattle to Montego Bay flights
Seattle to Providenciales flights
Portland to Nassau flights
Spokane to Luis Munoz Marin Intl flights
Seattle to George Town flights
Portland to Punta Cana flights
Seattle to Willemstad flights
Seattle to St. George's flights
Seattle to Kingston flights
Seattle to Puerto Plata flights
Portland to Oranjestad flights
Portland to Providenciales flights
Seattle to Road Town flights
Seattle to Castries flights
Seattle to Santo Domingo flights
Portland to Road Town flights
Portland to Simpson Bay flights
Portland to Christiansted flights
Portland to Santo Domingo flights
Portland to Montego Bay flights
Seattle to Christiansted flights
Portland to Willemstad flights
Seattle to St. John's flights
Portland to Bridgetown flights
Seattle to Kralendijk flights
Seattle to Kingstown flights
Spokane to Montego Bay flights
Portland to Kingston flights
Portland to George Town flights
Portland to Basseterre flights
Portland to St. John's flights
Spokane to Providenciales flights
Portland to Castries flights
Seattle to Basseterre flights
Spokane to Nassau flights
Portland to Santiago de los Caballeros flights
Seattle to Fort-de-France flights
Portland to Georgetown flights
Portland to Puerto Plata flights
Seattle to Marsh Harbour flights
Seattle to Havana flights

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 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$668Average$839FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.