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Saint Lucia

$251+ 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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheap 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 April 30, 2025.

Round-trip from

$611
(Booking.com)

One-way from

$251
(Flightnetwork)

Popular in

June

Cheapest in

August

Average price

$1,252
From Seattle/Tacoma Intl to Saint Lucia
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One-way flight from Seattle/Tacoma Intl to Saint Lucia
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($257 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($88 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find 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 April 30, 2025.

This Booking.com deal was found by Cheapflights users on 4/29. 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 6/122:55 pmSEA - UVF
2 stops20h 20mAir Canada
Fri 6/203:10 pmUVF - SEA
2 stops24h 51mAir Canada
Deal found 4/29$611
This Mytrip deal was found by Cheapflights users on 4/28. 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.
Fri 6/132:55 pmSEA - UVF
3 stops43h 50mMultiple Airlines
Fri 6/203:10 pmUVF - SEA
1 stop22h 41mMultiple Airlines
Deal found 4/28$678
This American Airlines deal was found by Cheapflights users on 4/29. 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 12/111:10 pmSEA - UVF
1 stop9h 50mAmerican Airlines
Wed 12/103:05 pmUVF - SEA
1 stop12h 17mAmerican Airlines
Deal found 4/29$733
This Trip.com deal was found by Cheapflights users on 4/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/132:37 pmSEA - SLU
3 stops28h 33mMultiple Airlines
Fri 6/2012:15 pmSLU - SEA
3 stops24h 58mMultiple Airlines
Deal found 4/29$1,044

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 April 30, 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

Thu 6/12

2:55 pm-2:15 pm

2 stops20h 20m

Castries Hewanorra

Fri 6/20

3:10 pm-1:01 pm

2 stops24h 51m

$611

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Fri 6/13

2:55 pm-1:45 pm

3 stops43h 50m

Castries Hewanorra

Fri 6/20

3:10 pm-10:51 am

1 stop22h 41m

$678

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 7/29

9:41 pm-2:20 pm

1 stop13h 39m

Castries Hewanorra

Fri 8/8

3:15 pm-9:19 am

2 stops21h 04m

$738

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Fri 6/13

2:37 pm-10:10 pm

3 stops28h 33m

Castries George F. L. Charle

Fri 6/20

12:15 pm-10:13 am

3 stops24h 58m

$1,044

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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 $556). Flying from Seattle to Saint Lucia in December is currently the most expensive (average of $730). 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 April 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Saint Lucia as you normally would.

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 April 30, 2025.
United Airlines
7.4
Good
8,696 reviews

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,696 reviews
United Airlines
7.4
Good
8,696 reviews

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,696 reviews

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.0
Good
9,242 reviews
United Airlines
7.4
Good
8,696 reviews

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • 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 $556). Flying from Seattle to Saint Lucia in December is currently the most expensive (average of $730). 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$525Average$782FlexibilityNo cancel feeOn-time71%

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