$280+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Jun 16 — Jun 231
Round-trip
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
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Best
Last-minute
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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 May 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 May 17, 2026.
This American Airlines deal was found by Cheapflights users on 5/16. 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 7/43:21 pm
SEA
- UVF
2 stops19h 29m
American Airlines
Sat 7/113:32 pm
UVF
- SEA
2 stops20h 53m
American Airlines
Deal found 5/16![American Airlines logo]()
$749
This American Airlines deal was found by Cheapflights users on 5/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:28 pm
SEA
- UVF
2 stops19h 36m
American Airlines
Fri 9/184:00 pm
UVF
- SEA
2 stops20h 28m
American Airlines
Deal found 5/12![American Airlines logo]()
$801
This American Airlines deal was found by Cheapflights users on 5/14. 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.
Thu 6/119:35 pm
SEA
- UVF
1 stop13h 41m
American Airlines
Wed 6/172:46 pm
UVF
- SEA
1 stop12h 22m
American Airlines
Deal found 5/14![American Airlines logo]()
$819
This Orbitz deal was found by Cheapflights users on 5/12. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:19 pm
SEA
- UVF
1 stop11h 34m
Multiple Airlines
Fri 9/183:15 pm
UVF
- SEA
1 stop32h 49m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$851
This Expedia deal was found by Cheapflights users on 5/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:28 pm
SEA
- UVF
1 stop13h 54m
JetBlue
Mon 7/64:33 pm
UVF
- SEA
1 stop31h 31m
JetBlue
Deal found 5/14![JetBlue logo]()
$971
This Delta deal was found by Cheapflights users on 5/16. 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.
Sat 5/235:00 pm
SEA
- UVF
1 stop18h 05m
Delta
Sat 5/303:25 pm
UVF
- SEA
1 stop21h 40m
Delta
Deal found 5/16![Delta logo]()
$1,008
This American Airlines deal was found by Cheapflights users on 5/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:23 am
SEA
- UVF
2 stops29h 29m
American Airlines
Fri 12/252:04 pm
UVF
- SEA
1 stop13h 36m
American Airlines
Deal found 5/13![American Airlines logo]()
$1,093
This Priceline deal was found by Cheapflights users on 5/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/293:00 pm
SEA
- UVF
2 stops20h 20m
Multiple Airlines
Mon 7/64:33 pm
UVF
- SEA
1 stop31h 31m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$1,100
This American Airlines deal was found by Cheapflights users on 5/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:23 am
SEA
- UVF
2 stops29h 29m
American Airlines
Thu 12/244:54 pm
UVF
- SEA
2 stops22h 21m
American Airlines
Deal found 5/13![American Airlines logo]()
$1,107
This Mytrip deal was found by Cheapflights users on 5/15. 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.
Fri 5/2911:59 pm
SEA
- SLU
3 stops35h 36m
Multiple Airlines
Mon 6/17:10 pm
SLU
- SEA
2 stops28h 58m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$1,152
This Gotogate deal was found by Cheapflights users on 5/12. 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 9/308:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 10/1712:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,235
This Gotogate deal was found by Cheapflights users on 5/12. 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.
Tue 9/18:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Fri 9/1812:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,236
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 May 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 May 17, 2026.
This American Airlines deal was found by Cheapflights users on 5/16. 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 7/48:55 pm
SEA
- UVF
1 stop13h 55m
American Airlines
Sat 7/113:32 pm
UVF
- SEA
2 stops20h 53m
American Airlines
Deal found 5/16![American Airlines logo]()
$749
This Orbitz deal was found by Cheapflights users on 5/12. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:19 pm
SEA
- UVF
1 stop11h 34m
Multiple Airlines
Fri 9/183:15 pm
UVF
- SEA
1 stop32h 49m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$851
This Expedia deal was found by Cheapflights users on 5/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:28 pm
SEA
- UVF
1 stop13h 54m
JetBlue
Mon 7/64:33 pm
UVF
- SEA
1 stop31h 31m
JetBlue
Deal found 5/14![JetBlue logo]()
$971
This American Airlines deal was found by Cheapflights users on 5/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:35 pm
SEA
- UVF
1 stop14h 29m
American Airlines
Fri 9/184:00 pm
UVF
- SEA
2 stops24h 12m
American Airlines
Deal found 5/12![American Airlines logo]()
$801
This American Airlines deal was found by Cheapflights users on 5/14. 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.
Thu 6/119:35 pm
SEA
- UVF
1 stop13h 41m
American Airlines
Wed 6/172:46 pm
UVF
- SEA
1 stop12h 22m
American Airlines
Deal found 5/14![American Airlines logo]()
$819
This Priceline deal was found by Cheapflights users on 5/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/293:00 pm
SEA
- UVF
2 stops20h 20m
Multiple Airlines
Mon 7/64:33 pm
UVF
- SEA
2 stops33h 16m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$1,182
This Gotogate deal was found by Cheapflights users on 5/12. 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 9/308:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 10/1712:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,235
This Mytrip deal was found by Cheapflights users on 5/15. 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.
Fri 5/2911:59 pm
SEA
- SLU
3 stops35h 36m
Multiple Airlines
Mon 6/17:10 pm
SLU
- SEA
3 stops30h 30m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$1,252
This Gotogate deal was found by Cheapflights users on 5/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Fri 10/1612:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$1,257
This Mytrip deal was found by Cheapflights users on 5/13. 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.
Fri 6/1210:45 am
SEA
- SLU
3 stops32h 25m
Multiple Airlines
Fri 6/196:00 pm
SLU
- SEA
2 stops30h 07m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,768
This Gotogate deal was found by Cheapflights users on 5/12. 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.
Tue 9/18:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Fri 9/186:00 pm
SLU
- SEA
3 stops30h 04m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$1,809
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated May 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated May 17, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/16. 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.
Sat 5/235:00 pm
SEA
- UVF
1 stop18h 05m
Delta
Sat 5/303:25 pm
UVF
- SEA
1 stop21h 40m
Delta
Deal found 5/16![Delta logo]()
$1,008
This Justfly.com deal was found by Cheapflights users on 5/13. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:52 pm
SEA
- UVF
1 stop12h 43m
JetBlue
Sat 5/304:55 pm
UVF
- SEA
1 stop31h 01m
JetBlue
Deal found 5/13![JetBlue logo]()
$1,170
This FlightHub deal was found by Cheapflights users on 5/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2310:30 am
SEA
- UVF
2 stops24h 10m
Multiple Airlines
Sat 5/304:55 pm
UVF
- SEA
1 stop31h 01m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,252
This Mytrip deal was found by Cheapflights users on 5/15. 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.
Fri 5/2911:59 pm
SEA
- SLU
3 stops35h 36m
Multiple Airlines
Mon 6/17:10 pm
SLU
- SEA
2 stops28h 58m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$1,152
This American Airlines deal was found by Cheapflights users on 5/14. 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.
Thu 6/119:35 pm
SEA
- UVF
1 stop13h 41m
American Airlines
Wed 6/172:46 pm
UVF
- SEA
1 stop12h 22m
American Airlines
Deal found 5/14![American Airlines logo]()
$819
This Gotogate deal was found by Cheapflights users on 5/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/128:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Fri 6/1912:35 pm
SLU
- SEA
2 stops35h 32m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,542
This Expedia deal was found by Cheapflights users on 5/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:28 pm
SEA
- UVF
1 stop13h 54m
JetBlue
Mon 7/64:33 pm
UVF
- SEA
1 stop31h 31m
JetBlue
Deal found 5/14![JetBlue logo]()
$971
This Priceline deal was found by Cheapflights users on 5/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/293:00 pm
SEA
- UVF
2 stops20h 20m
Multiple Airlines
Mon 7/64:33 pm
UVF
- SEA
1 stop31h 31m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$1,100
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 May 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 May 17, 2026.
This Delta deal was found by Cheapflights users on 5/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2711:35 pm
SEA
- UVF
1 stop11h 30m
Delta
Deal found 5/12![Delta logo]()
$280
This American Airlines deal was found by Cheapflights users on 5/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:15 pm
SEA
- UVF
2 stops16h 33m
American Airlines
Deal found 5/12![American Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:44 pm
SEA
- UVF
3 stops16h 56m
WestJet
Deal found 5/12![WestJet logo]()
$715
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 May 17, 2026.
Round-trip from | $749 (American Airlines) |
|---|---|
One-way from | $280 (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 May 17, 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
Sat 7/4
8:55 pm-1:50 pm
1 stop13h 55m
Castries Hewanorra
Sat 7/11
3:32 pm-9:25 am
2 stops20h 53m
$749
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 9/1
8:35 pm-2:04 pm
1 stop14h 29m
Castries Hewanorra
Fri 9/18
4:00 pm-1:12 pm
2 stops24h 12m
$801
Quickest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 6/11
9:35 pm-2:16 pm
1 stop13h 41m
Castries Hewanorra
Wed 6/17
2:46 pm-12:08 am
1 stop12h 22m
$819
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 9/1
10:19 pm-12:53 pm
1 stop11h 34m
Castries Hewanorra
Fri 9/18
3:15 pm-9:04 pm
1 stop32h 49m
$851
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 6/29
10:28 pm-3:22 pm
1 stop13h 54m
Castries Hewanorra
Mon 7/6
4:33 pm-9:04 pm
1 stop31h 31m
$971
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 6/29
3:00 pm-2:20 pm
2 stops20h 20m
Castries Hewanorra
Mon 7/6
4:33 pm-10:49 pm
2 stops33h 16m
$1,182
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Wed 9/30
8:00 am-7:00 pm
2 stops32h 00m
Castries George F. L. Charle
Sat 10/17
12:35 pm-9:04 pm
2 stops35h 29m
$1,235
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Fri 5/29
11:59 pm-2:35 pm
3 stops35h 36m
Castries George F. L. Charle
Mon 6/1
7:10 pm-10:40 pm
3 stops30h 30m
$1,252
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Fri 10/9
8:00 am-7:00 pm
2 stops32h 00m
Castries George F. L. Charle
Fri 10/16
12:35 pm-9:04 pm
2 stops35h 29m
$1,257
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Fri 6/12
10:45 am-10:10 pm
3 stops32h 25m
Castries George F. L. Charle
Fri 6/19
6:00 pm-9:07 pm
2 stops30h 07m
$1,768
Showing 1-10 of 14 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 May 17, 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.
Boarding
8.1
Food
7.2
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.8
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.
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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.
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 May 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Seattle to Saint Lucia
Discover the top 2 airlines 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 May 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$264 | Average$1,210 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$752 | Average$921 | FlexibilityNo cancel fee | On-time71% |