$614+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Aug 18 — Aug 251
Round-trip
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
Best
Last-minute
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 July 19, 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 July 19, 2026.
This Expedia deal was found by Cheapflights users on 7/18. 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 12/117:05 pm
SEA
- UVF
2 stops41h 35m
Air Canada
Fri 12/185:40 pm
UVF
- SEA
1 stop31h 19m
Air Canada
Deal found 7/18![Air Canada logo]()
$724
This FlightHub deal was found by Cheapflights users on 7/18. 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 10/1310:15 pm
SEA
- UVF
1 stop14h 05m
Multiple Airlines
Fri 10/163:15 pm
UVF
- SEA
1 stop32h 49m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$751
This United Airlines deal was found by Cheapflights users on 7/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:00 am
SEA
- UVF
2 stops29h 31m
United Airlines
Sat 10/172:35 pm
UVF
- SEA
2 stops35h 24m
United Airlines
Deal found 7/18![United Airlines logo]()
$755
This Justfly.com deal was found by Cheapflights users on 7/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1110:15 pm
SEA
- UVF
1 stop14h 05m
JetBlue
Fri 10/164:25 pm
UVF
- SEA
1 stop31h 50m
JetBlue
Deal found 7/18![JetBlue logo]()
$797
This Justfly.com deal was found by Cheapflights users on 7/16. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:40 pm
SEA
- UVF
1 stop14h 40m
JetBlue
Tue 10/134:25 pm
UVF
- SEA
1 stop31h 50m
JetBlue
Deal found 7/16![JetBlue logo]()
$814
This Justfly.com deal was found by Cheapflights users on 7/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:15 pm
SEA
- UVF
1 stop14h 05m
JetBlue
Sun 10/184:25 pm
UVF
- SEA
1 stop31h 50m
JetBlue
Deal found 7/18![JetBlue logo]()
$833
This American Airlines deal was found by Cheapflights users on 7/15. 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 8/36:15 pm
SEA
- UVF
2 stops15h 00m
American Airlines
Tue 8/112:49 pm
UVF
- SEA
2 stops23h 09m
American Airlines
Deal found 7/15![American Airlines logo]()
$847
This Justfly.com deal was found by Cheapflights users on 7/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1110:15 pm
SEA
- UVF
1 stop14h 05m
JetBlue
Sun 10/184:25 pm
UVF
- SEA
1 stop31h 50m
JetBlue
Deal found 7/18![JetBlue logo]()
$851
This FlightHub deal was found by Cheapflights users on 7/18. 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 10/1310:15 pm
SEA
- UVF
1 stop14h 05m
Multiple Airlines
Sun 10/182:30 pm
UVF
- SEA
2 stops31h 15m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$885
This American Airlines deal was found by Cheapflights users on 7/15. 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.
Sat 8/158:47 pm
SEA
- UVF
1 stop14h 02m
American Airlines
Sat 8/223:19 pm
UVF
- SEA
1 stop21h 26m
American Airlines
Deal found 7/15![American Airlines logo]()
$888
This Orbitz deal was found by Cheapflights users on 7/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Tue 10/1312:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$984
This Orbitz deal was found by Cheapflights users on 7/18. 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.
Mon 10/128:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 10/1712:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$1,013
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 July 19, 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 July 19, 2026.
This Expedia deal was found by Cheapflights users on 7/17. 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 1/87:05 pm
SEA
- UVF
2 stops41h 35m
Air Canada
Sun 1/175:40 pm
UVF
- SEA
2 stops28h 42m
Air Canada
Deal found 7/17![Air Canada logo]()
$614
This American Airlines deal was found by Cheapflights users on 7/15. 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 8/36:15 pm
SEA
- UVF
2 stops15h 00m
American Airlines
Tue 8/112:49 pm
UVF
- SEA
2 stops23h 09m
American Airlines
Deal found 7/15![American Airlines logo]()
$847
This Mytrip deal was found by Cheapflights users on 7/17. 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 1/87:20 am
SEA
- UVF
3 stops27h 35m
Multiple Airlines
Sun 1/175:40 pm
UVF
- SEA
2 stops28h 42m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$967
This American Airlines deal was found by Cheapflights users on 7/14. 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.
Fri 1/159:45 pm
SEA
- UVF
1 stop13h 18m
American Airlines
Tue 1/194:05 pm
UVF
- SEA
1 stop23h 40m
American Airlines
Deal found 7/14![American Airlines logo]()
$881
This American Airlines deal was found by Cheapflights users on 7/15. 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.
Sat 8/158:47 pm
SEA
- UVF
1 stop14h 02m
American Airlines
Sat 8/223:19 pm
UVF
- SEA
2 stops21h 06m
American Airlines
Deal found 7/15![American Airlines logo]()
$893
This Travelocity deal was found by Cheapflights users on 7/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 10/1012:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$984
This Orbitz deal was found by Cheapflights users on 7/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Tue 10/1312:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$984
This American Airlines deal was found by Cheapflights users on 7/17. 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 8/149:42 pm
SEA
- UVF
1 stop13h 37m
American Airlines
Fri 8/213:19 pm
UVF
- SEA
2 stops21h 06m
American Airlines
Deal found 7/17![American Airlines logo]()
$974
This Orbitz deal was found by Cheapflights users on 7/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/157:45 am
SEA
- SLU
2 stops31h 15m
Multiple Airlines
Tue 1/1912:35 pm
SLU
- SEA
2 stops36h 24m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$1,012
This American Airlines deal was found by Cheapflights users on 7/17. 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 1/811:11 pm
SEA
- UVF
1 stop10h 36m
American Airlines
Sun 1/172:56 pm
UVF
- SEA
1 stop12h 46m
American Airlines
Deal found 7/17![American Airlines logo]()
$974
This Orbitz deal was found by Cheapflights users on 7/18. 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.
Mon 10/128:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 10/1712:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$1,013
This oojo deal was found by Cheapflights users on 7/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/88:05 am
SEA
- SLU
2 stops34h 05m
Multiple Airlines
Sun 1/176:55 pm
SLU
- SEA
2 stops19h 20m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$1,222
This oojo deal was found by Cheapflights users on 7/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/137:55 am
SEA
- SLU
2 stops25h 15m
Multiple Airlines
Wed 1/2710:15 am
SLU
- SEA
2 stops28h 00m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$1,243
This oojo deal was found by Cheapflights users on 7/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:59 am
SEA
- SLU
2 stops27h 36m
Multiple Airlines
Mon 9/77:40 pm
SLU
- SEA
2 stops29h 14m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$1,421
This oojo deal was found by Cheapflights users on 7/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:00 am
SEA
- SLU
2 stops29h 05m
Multiple Airlines
Sun 8/236:55 pm
SLU
- SEA
2 stops30h 05m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$1,542
This Expedia deal was found by Cheapflights users on 7/15. 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 8/158:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 8/223:45 pm
SLU
- SEA
2 stops56h 22m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$1,585
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated July 19, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated July 19, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 7/15. 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 8/36:15 pm
SEA
- UVF
2 stops15h 00m
American Airlines
Tue 8/112:49 pm
UVF
- SEA
2 stops23h 09m
American Airlines
Deal found 7/15![American Airlines logo]()
$847
This FlightHub deal was found by Cheapflights users on 7/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:19 pm
SEA
- UVF
1 stop11h 18m
JetBlue
Thu 8/131:59 pm
UVF
- SEA
2 stops23h 31m
JetBlue
Deal found 7/15![JetBlue logo]()
$980
This Expedia deal was found by Cheapflights users on 7/18. 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.
Thu 8/1310:13 pm
SEA
- UVF
1 stop11h 26m
JetBlue
Thu 8/201:59 pm
UVF
- SEA
1 stop34h 09m
JetBlue
Deal found 7/18![JetBlue logo]()
$963
This American Airlines deal was found by Cheapflights users on 7/18. 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 8/135:31 pm
SEA
- UVF
2 stops17h 18m
American Airlines
Thu 8/202:49 pm
UVF
- SEA
2 stops21h 40m
American Airlines
Deal found 7/18![American Airlines logo]()
$976
This American Airlines deal was found by Cheapflights users on 7/17. 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 8/148:21 pm
SEA
- UVF
1 stop14h 28m
American Airlines
Fri 8/212:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 7/17![American Airlines logo]()
$969
This American Airlines deal was found by Cheapflights users on 7/15. 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.
Sat 8/158:47 pm
SEA
- UVF
1 stop14h 02m
American Airlines
Sat 8/223:19 pm
UVF
- SEA
1 stop21h 26m
American Airlines
Deal found 7/15![American Airlines logo]()
$888
This Expedia deal was found by Cheapflights users on 7/15. 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 8/158:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 8/223:45 pm
SLU
- SEA
2 stops56h 22m
Multiple Airlines
Deal found 7/15![Multiple Airlines logo]()
$1,585
This oojo deal was found by Cheapflights users on 7/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:00 am
SEA
- SLU
2 stops29h 05m
Multiple Airlines
Sun 8/236:55 pm
SLU
- SEA
2 stops30h 05m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$1,542
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 July 19, 2026.
Round-trip from | $614 (Travelocity) |
|---|
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 July 19, 2026.
Use the filters below to find and compare flights from Seattle to Saint Lucia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 1/8
7:05 pm-4:40 pm
2 stops41h 35m
Castries Hewanorra
Sun 1/17
5:40 pm-6:22 pm
2 stops28h 42m
$614
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 8/3
6:15 pm-12:15 pm
2 stops15h 00m
Castries Hewanorra
Tue 8/11
2:49 pm-10:58 am
2 stops23h 09m
$847
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 1/15
9:45 pm-3:03 pm
1 stop13h 18m
Castries Hewanorra
Tue 1/19
4:05 pm-11:45 am
1 stop23h 40m
$881
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 8/15
8:47 pm-1:49 pm
1 stop14h 02m
Castries Hewanorra
Sat 8/22
3:19 pm-9:25 am
2 stops21h 06m
$893
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 1/8
7:20 am-2:55 pm
3 stops27h 35m
Castries Hewanorra
Sun 1/17
5:40 pm-6:22 pm
2 stops28h 42m
$967
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 8/14
9:42 pm-2:19 pm
1 stop13h 37m
Castries Hewanorra
Fri 8/21
3:19 pm-9:25 am
2 stops21h 06m
$974
Quickest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 1/8
11:11 pm-1:47 pm
1 stop10h 36m
Castries Hewanorra
Sun 1/17
2:56 pm-11:42 pm
1 stop12h 46m
$974
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Mon 10/5
8:00 am-7:00 pm
2 stops32h 00m
Castries George F. L. Charle
Sat 10/10
12:35 pm-9:04 pm
2 stops35h 29m
$984
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sat 10/3
8:00 am-7:00 pm
2 stops32h 00m
Castries George F. L. Charle
Tue 10/13
12:35 pm-9:04 pm
2 stops35h 29m
$984
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Fri 1/15
7:45 am-7:00 pm
2 stops31h 15m
Castries George F. L. Charle
Tue 1/19
12:35 pm-8:59 pm
2 stops36h 24m
$1,012
Showing 1-10 of 16 resultsSorted by cheapest first
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 July 19, 2026.
See what other customers who have flown with Delta and 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.
Food
7.2
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
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.
Search flights from Seattle to Saint Lucia by cabin class
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 July 19, 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 July 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$668 | Average$1,077 | FlexibilityNo cancel fee | On-time71% |