$322+ 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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Mar 19 — Mar 261
1 adult, Economy
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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
Best
Last-minute
One-way
Cheapest flights from Seattle to Saint LuciaExplore 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 17, 2026.
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 17, 2026.
This Mytrip deal was found by Cheapflights users on 2/14. 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 3/410:05 am
SEA
- UVF
2 stops26h 20m
Air Canada
Wed 3/114:20 pm
UVF
- SEA
1 stop32h 56m
Air Canada
Deal found 2/14![Air Canada logo]()
$526
This FlightHub deal was found by Cheapflights users on 2/14. 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.
Sun 3/225:50 am
SEA
- UVF
2 stops30h 35m
Air Canada
Thu 3/264:15 pm
UVF
- SEA
1 stop33h 01m
Air Canada
Deal found 2/14![Air Canada logo]()
$588
This Mytrip deal was found by Cheapflights users on 2/13. 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
Multiple Airlines
Tue 4/142:40 pm
UVF
- SEA
2 stops26h 39m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$653
This Mytrip deal was found by Cheapflights users on 2/15. 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 4/18:00 am
SEA
- UVF
1 stop28h 25m
Air Canada
Wed 4/84:20 pm
UVF
- SEA
2 stops25h 45m
Air Canada
Deal found 2/15![Air Canada logo]()
$656
This American Airlines deal was found by Cheapflights users on 2/16. 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.
Tue 10/1311:10 pm
SEA
- UVF
1 stop11h 25m
American Airlines
Tue 10/204:20 pm
UVF
- SEA
2 stops19h 59m
American Airlines
Deal found 2/16![American Airlines logo]()
$658
This Air Canada deal was found by Cheapflights users on 2/14. 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.
Sat 2/288:00 pm
SEA
- UVF
2 stops40h 25m
Air Canada
Wed 3/45:25 pm
UVF
- SEA
2 stops25h 36m
Air Canada
Deal found 2/14![Air Canada logo]()
$667
This Mytrip deal was found by Cheapflights users on 2/13. 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 3/78:00 am
SEA
- SLU
2 stops26h 50m
Multiple Airlines
Sat 3/145:50 pm
SLU
- SEA
2 stops31h 26m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$1,406
This Gotogate deal was found by Cheapflights users on 2/14. 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 7/308:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Sat 8/15:50 pm
SLU
- SEA
2 stops30h 17m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$1,756
This Mytrip deal was found by Cheapflights users on 2/15. 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.
Mon 2/169:55 am
SEA
- SLU
3 stops28h 30m
Multiple Airlines
Sun 2/225:00 am
SLU
- SEA
3 stops36h 30m
Multiple Airlines
Deal found 2/15![Multiple Airlines logo]()
$1,868
This Expedia deal was found by Cheapflights users on 2/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/48:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Fri 4/106:00 pm
SLU
- SEA
2 stops54h 53m
Multiple Airlines
Deal found 2/15![Multiple Airlines logo]()
$4,020
This Expedia deal was found by Cheapflights users on 2/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:00 am
SEA
- SLU
2 stops22h 30m
Multiple Airlines
Tue 10/207:10 pm
SLU
- SEA
2 stops52h 54m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$4,236
Best flights from Seattle to Saint LuciaDiscover carefully curated flight deals from Seattle to Saint Lucia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 17, 2026.
Discover carefully curated flight deals from Seattle to Saint Lucia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 17, 2026.
This Mytrip deal was found by Cheapflights users on 2/12. 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 3/48:00 am
SEA
- UVF
1 stop28h 25m
Air Canada
Wed 3/114:20 pm
UVF
- SEA
1 stop32h 56m
Air Canada
Deal found 2/12![Air Canada logo]()
$526
This Mytrip deal was found by Cheapflights users on 2/13. 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
Multiple Airlines
Tue 4/142:40 pm
UVF
- SEA
2 stops26h 39m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$653
This Mytrip deal was found by Cheapflights users on 2/15. 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 4/18:00 am
SEA
- UVF
1 stop28h 25m
Air Canada
Wed 4/84:20 pm
UVF
- SEA
1 stop32h 33m
Air Canada
Deal found 2/15![Air Canada logo]()
$656
This FlightHub deal was found by Cheapflights users on 2/14. 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.
Sun 3/225:50 am
SEA
- UVF
2 stops30h 35m
Air Canada
Thu 3/264:15 pm
UVF
- SEA
2 stops25h 46m
Air Canada
Deal found 2/14![Air Canada logo]()
$667
This Mytrip deal was found by Cheapflights users on 2/13. 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 3/78:00 am
SEA
- SLU
2 stops26h 50m
Multiple Airlines
Sat 3/145:50 pm
SLU
- SEA
2 stops31h 26m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$1,406
This Gotogate deal was found by Cheapflights users on 2/14. 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 7/308:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Sat 8/15:50 pm
SLU
- SEA
2 stops30h 17m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$1,756
This Expedia deal was found by Cheapflights users on 2/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/48:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Fri 4/106:00 pm
SLU
- SEA
2 stops54h 53m
Multiple Airlines
Deal found 2/15![Multiple Airlines logo]()
$4,020
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated February 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated February 17, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 2/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1610:16 pm
SEA
- UVF
1 stop12h 32m
American Airlines
Sun 2/224:58 pm
UVF
- SEA
2 stops21h 57m
American Airlines
Deal found 2/15![American Airlines logo]()
$1,072
This Mytrip deal was found by Cheapflights users on 2/15. 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.
Mon 2/169:55 am
SEA
- SLU
3 stops28h 30m
Multiple Airlines
Sun 2/225:00 am
SLU
- SEA
3 stops36h 30m
Multiple Airlines
Deal found 2/15![Multiple Airlines logo]()
$1,868
This Air Canada deal was found by Cheapflights users on 2/13. 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.
Sat 2/288:00 pm
SEA
- UVF
2 stops40h 25m
Air Canada
Wed 3/45:25 pm
UVF
- SEA
1 stop32h 51m
Air Canada
Deal found 2/13![Air Canada logo]()
$667
This Gotogate deal was found by Cheapflights users on 2/12. 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 3/410:05 am
SEA
- UVF
2 stops26h 20m
Air Canada
Wed 3/114:20 pm
UVF
- SEA
1 stop32h 56m
Air Canada
Deal found 2/12![Air Canada logo]()
$526
This Delta deal was found by Cheapflights users on 2/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/44:05 pm
SEA
- UVF
1 stop19h 00m
Delta
Sun 3/83:18 pm
UVF
- SEA
1 stop21h 41m
Delta
Deal found 2/16![Delta logo]()
$744
This American Airlines deal was found by Cheapflights users on 2/16. 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 3/47:29 pm
SEA
- UVF
2 stops16h 29m
American Airlines
Sun 3/83:18 pm
UVF
- SEA
2 stops22h 33m
American Airlines
Deal found 2/16![American Airlines logo]()
$1,109
This Mytrip deal was found by Cheapflights users on 2/13. 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 3/78:00 am
SEA
- SLU
2 stops26h 50m
Multiple Airlines
Sat 3/145:50 pm
SLU
- SEA
2 stops31h 26m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$1,406
This FlightHub deal was found by Cheapflights users on 2/14. 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.
Sun 3/225:50 am
SEA
- UVF
2 stops30h 35m
Air Canada
Thu 3/264:15 pm
UVF
- SEA
1 stop33h 01m
Air Canada
Deal found 2/14![Air Canada logo]()
$588
This American Airlines deal was found by Cheapflights users on 2/14. 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 3/3110:16 pm
SEA
- UVF
1 stop13h 42m
American Airlines
Tue 4/73:13 pm
UVF
- SEA
2 stops22h 01m
American Airlines
Deal found 2/14![American Airlines logo]()
$749
This Mytrip deal was found by Cheapflights users on 2/14. 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.
Tue 3/3110:20 am
SEA
- UVF
2 stops26h 00m
Multiple Airlines
Tue 4/72:40 pm
UVF
- SEA
3 stops35h 10m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$869
This WestJet deal was found by Cheapflights users on 2/14. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/313:10 pm
SEA
- UVF
2 stops43h 36m
WestJet
Tue 4/72:40 pm
UVF
- SEA
2 stops26h 39m
WestJet
Deal found 2/14![WestJet logo]()
$1,016
One-way flights from Seattle to Saint LuciaSearch for one-way flight options from Seattle to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated February 17, 2026.
Search for one-way flight options from Seattle to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated February 17, 2026.
This Delta deal was found by Cheapflights users on 2/13. 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.
Sat 2/2811:05 pm
SEA
- UVF
1 stop12h 00m
Delta
Deal found 2/13![Delta logo]()
$322
This FlightHub deal was found by Cheapflights users on 2/16. 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.
Sat 2/218:00 am
SEA
- UVF
1 stop28h 25m
Air Canada
Deal found 2/16![Air Canada logo]()
$365
This American Airlines deal was found by Cheapflights users on 2/16. 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.
Sat 2/2110:08 pm
SEA
- UVF
2 stops13h 50m
American Airlines
Deal found 2/16![American Airlines logo]()
$515
This Kiwi.com deal was found by Cheapflights users on 2/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:55 am
SEA
- UVF
3 stops46h 10m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$541
This Mytrip deal was found by Cheapflights users on 2/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/213:40 pm
SEA
- UVF
3 stops20h 45m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$648
This American Airlines deal was found by Cheapflights users on 2/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1910:08 pm
SEA
- UVF
2 stops13h 50m
American Airlines
Deal found 2/15![American Airlines logo]()
$1,409
This Delta deal was found by Cheapflights users on 2/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/194:05 pm
SEA
- UVF
1 stop19h 00m
Delta
Deal found 2/15![Delta logo]()
$1,823
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 17, 2026.
Round-trip from | $526 (Mytrip) |
|---|---|
One-way from | $322 (Delta) |
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 17, 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
Wed 3/4
8:00 am-4:25 pm
1 stop28h 25m
Castries Hewanorra
Wed 3/11
4:20 pm-10:16 pm
1 stop32h 56m
$526
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 4/8
8:00 am-3:25 pm
1 stop28h 25m
Castries Hewanorra
Tue 4/14
2:40 pm-2:19 pm
2 stops26h 39m
$653
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 4/1
8:00 am-3:25 pm
1 stop28h 25m
Castries Hewanorra
Wed 4/8
4:20 pm-9:53 pm
1 stop32h 33m
$656
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sun 3/22
5:50 am-3:25 pm
2 stops30h 35m
Castries Hewanorra
Thu 3/26
4:15 pm-3:01 pm
2 stops25h 46m
$667
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sat 3/7
8:00 am-2:50 pm
2 stops26h 50m
Castries George F. L. Charle
Sat 3/14
5:50 pm-10:16 pm
2 stops31h 26m
$1,406
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Thu 7/30
8:00 am-2:35 pm
2 stops27h 35m
Castries George F. L. Charle
Sat 8/1
5:50 pm-9:07 pm
2 stops30h 17m
$1,756
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sat 4/4
8:00 am-2:35 pm
2 stops27h 35m
Castries George F. L. Charle
Fri 4/10
6:00 pm-9:53 pm
2 stops54h 53m
$4,020
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 2/28
11:05 pm-3:05 pm
1 stop12h 00m
$322
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 2/28
7:29 pm-3:58 pm
2 stops16h 29m
$322
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 2/21
8:00 am-4:25 pm
1 stop28h 25m
$365
Showing 1-10 of 15 results
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.
SEA-UVF
SEA-SLU
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
SEA-LC0
SEA-UVF
SEA-SLU
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 17, 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.
Crew
8.0
Entertainment
6.9
Boarding
7.5
Food
6.4
Comfort
7.2
Overall
7.2
Reviews
1 / 20
2.0
MediocreSusie,Jan 2026
CLT - TPA
Crew
8.0
Entertainment
6.9
Boarding
7.5
Food
6.4
Comfort
7.2
Overall
7.2
Reviews
1 / 20
2.0
MediocreSusie,Jan 2026
CLT - TPA
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.
Browse thousands of different options on Cheapflights for your next trip
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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.
Complete your trip
Complete your trip to Saint Lucia by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Seattle to Saint Lucia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Saint Lucia flights
Browse other Seattle and Saint Lucia flight options. Last updated on February 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$668 | Average$840 | FlexibilityNo cancel fee | On-time71% |