$509+ 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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Jun 22 — Jun 291
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Saint Lucia with Cheapflights
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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
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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 May 23, 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 23, 2026.
This American Airlines deal was found by Cheapflights users on 5/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:37 pm
SEA
- UVF
2 stops17h 13m
American Airlines
Fri 7/102:50 pm
UVF
- SEA
2 stops21h 34m
American Airlines
Deal found 5/19![American Airlines logo]()
$509
This American Airlines deal was found by Cheapflights users on 5/20. 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 6/48:45 pm
SEA
- UVF
1 stop14h 01m
American Airlines
Wed 6/103:16 pm
UVF
- SEA
1 stop21h 34m
American Airlines
Deal found 5/20![American Airlines logo]()
$706
This Air Canada deal was found by Cheapflights users on 5/21. 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.
Thu 10/2910:10 am
SEA
- UVF
2 stops26h 15m
Air Canada
Mon 11/25:25 pm
UVF
- SEA
2 stops25h 12m
Air Canada
Deal found 5/21![Air Canada logo]()
$741
This Justfly.com deal was found by Cheapflights users on 5/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:00 am
SEA
- UVF
1 stop27h 10m
Air Canada
Fri 6/123:05 pm
UVF
- SEA
1 stop33h 03m
Air Canada
Deal found 5/19![Air Canada logo]()
$742
This American Airlines deal was found by Cheapflights users on 5/21. 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 6/11:03 pm
SEA
- UVF
1 stop20h 02m
American Airlines
Fri 6/123:16 pm
UVF
- SEA
1 stop21h 34m
American Airlines
Deal found 5/21![American Airlines logo]()
$752
This American Airlines deal was found by Cheapflights users on 5/21. 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 7/16:08 pm
SEA
- UVF
2 stops15h 00m
American Airlines
Tue 7/73:20 pm
UVF
- SEA
2 stops21h 07m
American Airlines
Deal found 5/21![American Airlines logo]()
$762
This American Airlines deal was found by Cheapflights users on 5/23. 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 6/36:15 pm
SEA
- UVF
2 stops14h 49m
American Airlines
Sun 6/73:16 pm
UVF
- SEA
1 stop21h 34m
American Airlines
Deal found 5/23![American Airlines logo]()
$767
This Orbitz deal was found by Cheapflights users on 5/21. 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.
Wed 11/118:40 am
SEA
- UVF
2 stops27h 45m
Air Canada
Sun 11/155:25 pm
UVF
- SEA
1 stop31h 29m
Air Canada
Deal found 5/21![Air Canada logo]()
$777
This Expedia deal was found by Cheapflights users on 5/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/78:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 6/1312:35 pm
SLU
- SEA
2 stops35h 33m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$1,086
This Gotogate deal was found by Cheapflights users on 5/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/68:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Thu 6/113:45 pm
SLU
- SEA
2 stops56h 23m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$1,534
This Mytrip deal was found by Cheapflights users on 5/23. 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 7/73:00 pm
SEA
- SLU
3 stops25h 00m
Multiple Airlines
Tue 7/147:10 pm
SLU
- SEA
3 stops24h 47m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$1,612
This Mytrip deal was found by Cheapflights users on 5/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:35 pm
SEA
- SLU
3 stops34h 55m
Multiple Airlines
Sat 6/1312:35 pm
SLU
- SEA
3 stops35h 33m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$1,709
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 23, 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 23, 2026.
This American Airlines deal was found by Cheapflights users on 5/20. 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 6/46:08 pm
SEA
- UVF
2 stops16h 38m
American Airlines
Wed 6/103:16 pm
UVF
- SEA
2 stops21h 11m
American Airlines
Deal found 5/20![American Airlines logo]()
$711
This FlightHub deal was found by Cheapflights users on 5/21. 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.
Thu 10/2910:10 am
SEA
- UVF
2 stops26h 15m
Air Canada
Mon 11/25:25 pm
UVF
- SEA
1 stop31h 29m
Air Canada
Deal found 5/21![Air Canada logo]()
$751
This Mytrip deal was found by Cheapflights users on 5/21. 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 7/110:30 am
SEA
- UVF
3 stops24h 10m
Multiple Airlines
Tue 7/73:05 pm
UVF
- SEA
3 stops21h 35m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$912
This American Airlines deal was found by Cheapflights users on 5/23. 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 7/68:45 pm
SEA
- UVF
1 stop12h 30m
American Airlines
Mon 7/133:20 pm
UVF
- SEA
1 stop21h 27m
American Airlines
Deal found 5/23![American Airlines logo]()
$752
This Orbitz deal was found by Cheapflights users on 5/21. 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.
Wed 11/1110:10 am
SEA
- UVF
2 stops26h 15m
Air Canada
Sun 11/155:25 pm
UVF
- SEA
2 stops28h 57m
Air Canada
Deal found 5/21![Air Canada logo]()
$777
This American Airlines deal was found by Cheapflights users on 5/22. 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 7/38:45 pm
SEA
- UVF
1 stop12h 30m
American Airlines
Fri 7/103:20 pm
UVF
- SEA
2 stops21h 04m
American Airlines
Deal found 5/22![American Airlines logo]()
$757
This American Airlines deal was found by Cheapflights users on 5/21. 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 7/19:35 pm
SEA
- UVF
1 stop13h 45m
American Airlines
Tue 7/73:20 pm
UVF
- SEA
2 stops21h 07m
American Airlines
Deal found 5/21![American Airlines logo]()
$762
This Expedia deal was found by Cheapflights users on 5/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/78:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 6/1312:35 pm
SLU
- SEA
2 stops35h 33m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$1,086
This Gotogate deal was found by Cheapflights users on 5/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/68:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Thu 6/113:45 pm
SLU
- SEA
2 stops56h 23m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$1,534
This Mytrip deal was found by Cheapflights users on 5/23. 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 7/73:00 pm
SEA
- SLU
3 stops25h 00m
Multiple Airlines
Tue 7/147:10 pm
SLU
- SEA
3 stops24h 47m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$1,612
This Mytrip deal was found by Cheapflights users on 5/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:35 pm
SEA
- SLU
3 stops34h 55m
Multiple Airlines
Sat 6/1312:35 pm
SLU
- SEA
3 stops35h 33m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$1,709
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated May 23, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated May 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/21. 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 6/11:03 pm
SEA
- UVF
1 stop20h 02m
American Airlines
Fri 6/123:16 pm
UVF
- SEA
1 stop21h 34m
American Airlines
Deal found 5/21![American Airlines logo]()
$752
This Mytrip deal was found by Cheapflights users on 5/21. 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 6/15:50 am
SEA
- UVF
3 stops29h 20m
Air Canada
Fri 6/123:05 pm
UVF
- SEA
2 stops34h 35m
Air Canada
Deal found 5/21![Air Canada logo]()
$883
This Mytrip deal was found by Cheapflights users on 5/21. 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 6/17:35 pm
SEA
- UVF
2 stops15h 35m
Multiple Airlines
Fri 6/123:05 pm
UVF
- SEA
3 stops22h 00m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$913
This American Airlines deal was found by Cheapflights users on 5/23. 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 6/39:35 pm
SEA
- UVF
1 stop13h 41m
American Airlines
Sun 6/73:16 pm
UVF
- SEA
1 stop21h 34m
American Airlines
Deal found 5/23![American Airlines logo]()
$762
This American Airlines deal was found by Cheapflights users on 5/20. 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 6/48:45 pm
SEA
- UVF
1 stop14h 01m
American Airlines
Wed 6/103:16 pm
UVF
- SEA
1 stop21h 34m
American Airlines
Deal found 5/20![American Airlines logo]()
$706
This Gotogate deal was found by Cheapflights users on 5/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/68:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Thu 6/113:45 pm
SLU
- SEA
2 stops56h 23m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$1,534
This FlightHub deal was found by Cheapflights users on 5/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/711:52 pm
SEA
- UVF
1 stop33h 58m
Multiple Airlines
Fri 6/123:05 pm
UVF
- SEA
1 stop33h 03m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$796
This Justfly.com deal was found by Cheapflights users on 5/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/77:20 pm
SEA
- UVF
2 stops39h 50m
Air Canada
Fri 6/123:05 pm
UVF
- SEA
1 stop33h 03m
Air Canada
Deal found 5/19![Air Canada logo]()
$832
This Expedia deal was found by Cheapflights users on 5/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/78:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 6/1312:35 pm
SLU
- SEA
2 stops35h 33m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$1,086
This Justfly.com deal was found by Cheapflights users on 5/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:00 am
SEA
- UVF
1 stop27h 10m
Air Canada
Fri 6/123:05 pm
UVF
- SEA
1 stop33h 03m
Air Canada
Deal found 5/19![Air Canada logo]()
$742
This Mytrip deal was found by Cheapflights users on 5/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:35 pm
SEA
- SLU
3 stops34h 55m
Multiple Airlines
Sat 6/1312:35 pm
SLU
- SEA
3 stops35h 33m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$1,709
This FlightHub deal was found by Cheapflights users on 5/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/97:35 pm
SEA
- UVF
2 stops39h 05m
Multiple Airlines
Fri 6/123:05 pm
UVF
- SEA
1 stop33h 03m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$846
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 23, 2026.
Round-trip from | $509 (American Airlines) |
|---|
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 23, 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
Thu 6/4
6:08 pm-1:46 pm
2 stops16h 38m
Castries Hewanorra
Wed 6/10
3:16 pm-9:27 am
2 stops21h 11m
$711
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 10/29
10:10 am-3:25 pm
2 stops26h 15m
Castries Hewanorra
Mon 11/2
5:25 pm-8:54 pm
1 stop31h 29m
$751
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 7/6
8:45 pm-12:15 pm
1 stop12h 30m
Castries Hewanorra
Mon 7/13
3:20 pm-9:47 am
1 stop21h 27m
$752
Quickest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 7/3
8:45 pm-12:15 pm
1 stop12h 30m
Castries Hewanorra
Fri 7/10
3:20 pm-9:24 am
2 stops21h 04m
$757
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 7/1
9:35 pm-2:20 pm
1 stop13h 45m
Castries Hewanorra
Tue 7/7
3:20 pm-9:27 am
2 stops21h 07m
$762
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 11/11
10:10 am-4:25 pm
2 stops26h 15m
Castries Hewanorra
Sun 11/15
5:25 pm-6:22 pm
2 stops28h 57m
$777
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 7/1
10:30 am-1:40 pm
3 stops24h 10m
Castries Hewanorra
Tue 7/7
3:05 pm-9:40 am
3 stops21h 35m
$912
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sun 6/7
8:00 am-7:00 pm
2 stops32h 00m
Castries George F. L. Charle
Sat 6/13
12:35 pm-9:08 pm
2 stops35h 33m
$1,086
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sat 6/6
8:00 am-7:00 pm
2 stops32h 00m
Castries George F. L. Charle
Thu 6/11
3:45 pm-9:08 pm
2 stops56h 23m
$1,534
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Tue 7/7
3:00 pm-7:00 pm
3 stops25h 00m
Castries George F. L. Charle
Tue 7/14
7:10 pm-4:57 pm
3 stops24h 47m
$1,612
Showing 1-10 of 11 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 23, 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.
Comfort
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Entertainment
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.
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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 23, 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 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$264 | Average$1,210 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$668 | Average$921 | FlexibilityNo cancel fee | On-time71% |