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Saint Lucia

$491+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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 December 12, 2025.

This Delta deal was found by Cheapflights users on 12/10. 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 12/113:47 pmSEA - UVF
1 stop19h 49mDelta
Mon 12/224:50 pmUVF - SEA
1 stop21h 41mDelta
Deal found 12/10$982
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Thu 12/1110:07 pmSEA - UVF
1 stop12h 53mAmerican Airlines
Mon 12/223:53 pmUVF - SEA
2 stops22h 09mAmerican Airlines
Deal found 12/10$987
This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:00 pmSEA - UVF
2 stops40h 25mAir Canada
Sun 12/285:15 pmUVF - SEA
2 stops30h 01mAir Canada
Deal found 12/11$1,621
This Mytrip deal was found by Cheapflights users on 12/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:32 pmSEA - UVF
3 stops41h 53mMultiple Airlines
Sun 12/285:15 pmUVF - SEA
2 stops33h 31mMultiple Airlines
Deal found 12/11$1,979
This Delta deal was found by Cheapflights users on 12/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:47 pmSEA - UVF
1 stop19h 43mDelta
Sun 12/284:50 pmUVF - SEA
1 stop21h 41mDelta
Deal found 12/11$2,627
This Delta deal was found by Cheapflights users on 12/10. 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.
Fri 12/2610:55 pmSEA - UVF
1 stop12h 38mDelta
Sat 1/33:00 pmUVF - SEA
1 stop12h 58mDelta
Deal found 12/10$3,077
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Fri 12/2610:06 pmSEA - UVF
1 stop13h 48mAmerican Airlines
Sat 1/34:54 pmUVF - SEA
2 stops22h 05mAmerican Airlines
Deal found 12/10$3,105
This American Airlines deal was found by Cheapflights users on 12/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:56 pmSEA - UVF
2 stops15h 08mMultiple Airlines
Sat 1/31:38 pmUVF - SEA
1 stop24h 36mMultiple Airlines
Deal found 12/11$5,050

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 December 12, 2025.

Round-trip from

$491
(Delta)
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 December 12, 2025.
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

Sun 1/18

4:05 pm-3:05 pm

1 stop19h 00m

Castries Hewanorra

Wed 1/21

4:25 pm-10:07 am

1 stop21h 42m

$491

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sun 1/18

4:05 pm-3:05 pm

1 stop19h 00m

Castries Hewanorra

Thu 1/29

4:25 pm-10:07 am

1 stop21h 42m

$491

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Thu 3/5

10:11 pm-4:00 pm

1 stop13h 49m

Castries Hewanorra

Mon 3/16

3:58 pm-11:27 am

2 stops22h 29m

$496

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sun 1/18

11:11 pm-1:46 pm

1 stop10h 35m

Castries Hewanorra

Wed 1/21

5:02 pm-11:01 am

2 stops21h 59m

$496

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sun 1/18

11:11 pm-4:02 pm

1 stop12h 51m

Castries Hewanorra

Thu 1/29

5:02 pm-9:37 am

2 stops20h 35m

$496

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Tue 3/31

8:00 am-9:30 am

2 stops22h 30m

Castries George F. L. Charle

Sat 4/11

6:20 pm-9:51 pm

2 stops30h 31m

$4,011

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Wed 2/25

8:10 am-3:15 pm

2 stops51h 05m

Castries George F. L. Charle

Sun 3/1

5:00 am-10:16 pm

2 stops21h 16m

$4,011

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Sat 4/11

8:00 am-3:35 pm

2 stops52h 35m

Castries George F. L. Charle

Sat 4/18

6:20 pm-9:51 pm

2 stops30h 31m

$4,011

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Sun 2/8

8:10 am-3:35 pm

2 stops27h 25m

Castries George F. L. Charle

Thu 2/12

6:20 pm-10:16 pm

2 stops55h 56m

$4,011

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Thu 1/8

8:10 am-11:30 am

2 stops23h 20m

Castries George F. L. Charle

Thu 1/15

6:20 pm-10:16 pm

2 stops55h 56m

$4,011

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 14 results
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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

What is the cheapest month to book a flight from Seattle to Saint Lucia?

Currently, January is the cheapest month in which you can book a flight from Seattle to Saint Lucia (average of $505). Flying from Seattle to Saint Lucia in June is currently the most expensive (average of $1,489). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to LC?

Find hourly flight availability from Seattle to Saint Lucia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s optimal to fly from Seattle to Saint Lucia in the morning. By choosing this option you can save up to 17% on the cost of your flight, compared to a flight in the evening.

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 December 12, 2025.
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
11,050 reviews

Food

6.5

Boarding

7.5

Entertainment

6.9

Overall

7.2

Comfort

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
American Airlines
7.2
Good
11,050 reviews
American Airlines
7.2
Good
11,050 reviews

Food

6.5

Boarding

7.5

Entertainment

6.9

Overall

7.2

Comfort

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit

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 49m. Fly via Delta or American Airlines 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.

  • What is the cheapest month to book a flight from Seattle to Saint Lucia?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Saint Lucia (average of $505). Flying from Seattle to Saint Lucia in June is currently the most expensive (average of $1,489). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$615Average$887FlexibilityNo cancel feeOn-time71%

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