$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 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Jul 13 — Jul 201
Round-trip
1 adult, Economy
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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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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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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 June 13, 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 June 13, 2026.
This American Airlines deal was found by Cheapflights users on 6/8. 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
Tue 7/282:50 pm
UVF
- SEA
1 stop12h 17m
American Airlines
Deal found 6/8![American Airlines logo]()
$721
This Air Canada deal was found by Cheapflights users on 6/8. 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.
Sun 11/17:45 am
SEA
- UVF
1 stop28h 40m
Air Canada
Thu 11/55:25 pm
UVF
- SEA
2 stops28h 57m
Air Canada
Deal found 6/8![Air Canada logo]()
$734
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Mon 7/69:35 pm
SEA
- UVF
1 stop13h 45m
American Airlines
Mon 7/132:50 pm
UVF
- SEA
1 stop12h 17m
American Airlines
Deal found 6/12![American Airlines logo]()
$762
This American Airlines deal was found by Cheapflights users on 6/11. 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 7/2412:56 pm
SEA
- UVF
1 stop20h 12m
American Airlines
Fri 7/312:50 pm
UVF
- SEA
1 stop12h 17m
American Airlines
Deal found 6/11![American Airlines logo]()
$918
This Priceline deal was found by Cheapflights users on 6/10. 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.
Sat 8/2210:19 pm
SEA
- UVF
1 stop11h 34m
JetBlue
Sat 8/294:11 pm
UVF
- SEA
1 stop31h 53m
JetBlue
Deal found 6/10![JetBlue logo]()
$1,049
This Expedia deal was found by Cheapflights users on 6/8. 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 11/207:45 am
SEA
- SLU
2 stops31h 15m
Multiple Airlines
Sat 11/2812:35 pm
SLU
- SEA
2 stops36h 19m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$1,062
This Gotogate deal was found by Cheapflights users on 6/10. 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 8/228:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 8/2912:35 pm
SLU
- SEA
2 stops35h 32m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$1,295
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Sun 7/267:35 pm
SEA
- SLU
3 stops33h 35m
Multiple Airlines
Sun 8/25:00 am
SLU
- SEA
3 stops19h 00m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,444
This Mytrip deal was found by Cheapflights users on 6/8. 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 7/2410:45 am
SEA
- SLU
3 stops32h 25m
Multiple Airlines
Fri 7/316:00 pm
SLU
- SEA
3 stops31h 42m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$1,750
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 June 13, 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 June 13, 2026.
This Air Canada deal was found by Cheapflights users on 6/8. 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.
Sun 11/17:45 am
SEA
- UVF
1 stop28h 40m
Air Canada
Thu 11/55:25 pm
UVF
- SEA
2 stops28h 57m
Air Canada
Deal found 6/8![Air Canada logo]()
$734
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Mon 7/69:35 pm
SEA
- UVF
1 stop13h 45m
American Airlines
Mon 7/132:50 pm
UVF
- SEA
1 stop12h 17m
American Airlines
Deal found 6/12![American Airlines logo]()
$762
This Priceline deal was found by Cheapflights users on 6/10. 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.
Sat 8/2210:19 pm
SEA
- UVF
1 stop11h 34m
JetBlue
Sat 8/294:11 pm
UVF
- SEA
1 stop31h 53m
JetBlue
Deal found 6/10![JetBlue logo]()
$1,049
This Expedia deal was found by Cheapflights users on 6/8. 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 11/207:45 am
SEA
- SLU
2 stops31h 15m
Multiple Airlines
Sat 11/2812:35 pm
SLU
- SEA
2 stops36h 19m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$1,062
This American Airlines deal was found by Cheapflights users on 6/13. 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.
Fri 7/2412:56 pm
SEA
- UVF
1 stop20h 12m
American Airlines
Fri 7/312:50 pm
UVF
- SEA
1 stop12h 17m
American Airlines
Deal found 6/13![American Airlines logo]()
$962
This Expedia deal was found by Cheapflights users on 6/9. 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 7/2411:44 pm
SEA
- UVF
2 stops36h 48m
Multiple Airlines
Fri 7/313:05 pm
UVF
- SEA
2 stops34h 37m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,089
This American Airlines deal was found by Cheapflights users on 6/10. 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 8/229:42 pm
SEA
- UVF
1 stop13h 47m
American Airlines
Sat 8/293:19 pm
UVF
- SEA
2 stops21h 10m
American Airlines
Deal found 6/10![American Airlines logo]()
$1,138
This Gotogate deal was found by Cheapflights users on 6/10. 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 8/228:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 8/2912:35 pm
SLU
- SEA
2 stops35h 32m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$1,295
This Mytrip deal was found by Cheapflights users on 6/8. 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 7/2410:45 am
SEA
- SLU
3 stops32h 25m
Multiple Airlines
Fri 7/316:00 pm
SLU
- SEA
3 stops31h 42m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$1,750
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Sun 7/267:35 pm
SEA
- SLU
3 stops20h 25m
Multiple Airlines
Sun 8/25:00 am
SLU
- SEA
2 stops19h 07m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$2,462
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated June 13, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/8. 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
Tue 7/282:50 pm
UVF
- SEA
1 stop12h 17m
American Airlines
Deal found 6/8![American Airlines logo]()
$721
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Mon 7/69:35 pm
SEA
- UVF
1 stop13h 45m
American Airlines
Mon 7/132:50 pm
UVF
- SEA
1 stop12h 17m
American Airlines
Deal found 6/12![American Airlines logo]()
$762
This American Airlines deal was found by Cheapflights users on 6/11. 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 7/2412:56 pm
SEA
- UVF
1 stop20h 12m
American Airlines
Fri 7/312:50 pm
UVF
- SEA
1 stop12h 17m
American Airlines
Deal found 6/11![American Airlines logo]()
$918
This Expedia deal was found by Cheapflights users on 6/9. 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 7/2411:44 pm
SEA
- UVF
2 stops36h 48m
Multiple Airlines
Fri 7/313:05 pm
UVF
- SEA
2 stops34h 37m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,089
This Mytrip deal was found by Cheapflights users on 6/8. 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 7/2410:45 am
SEA
- SLU
3 stops32h 25m
Multiple Airlines
Fri 7/316:00 pm
SLU
- SEA
3 stops31h 42m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$1,750
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Sun 7/267:35 pm
SEA
- SLU
3 stops33h 35m
Multiple Airlines
Sun 8/25:00 am
SLU
- SEA
3 stops19h 00m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,444
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 June 13, 2026.
Search for one-way flight options from Seattle to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This Trip.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/2510:30 am
SEA
- UVF
3 stops24h 10m
WestJet
Deal found 6/10![WestJet logo]()
$322
This Mytrip deal was found by Cheapflights users on 6/10. 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 7/257:00 am
SEA
- UVF
2 stops27h 40m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$451
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 June 13, 2026.
Round-trip from | $721 (American Airlines) |
|---|---|
One-way from | $322 (Trip.com) |
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 June 13, 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
Sun 11/1
7:45 am-4:25 pm
1 stop28h 40m
Castries Hewanorra
Thu 11/5
5:25 pm-6:22 pm
2 stops28h 57m
$734
Quickest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 7/6
9:35 pm-2:20 pm
1 stop13h 45m
Castries Hewanorra
Mon 7/13
2:50 pm-12:07 am
1 stop12h 17m
$762
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 7/24
12:56 pm-12:08 pm
1 stop20h 12m
Castries Hewanorra
Fri 7/31
2:50 pm-12:07 am
1 stop12h 17m
$962
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 8/22
10:19 pm-12:53 pm
1 stop11h 34m
Castries Hewanorra
Sat 8/29
4:11 pm-9:04 pm
1 stop31h 53m
$1,049
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Fri 11/20
7:45 am-7:00 pm
2 stops31h 15m
Castries George F. L. Charle
Sat 11/28
12:35 pm-8:54 pm
2 stops36h 19m
$1,062
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 7/24
11:44 pm-3:32 pm
2 stops36h 48m
Castries Hewanorra
Fri 7/31
3:05 pm-10:42 pm
2 stops34h 37m
$1,089
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 8/22
9:42 pm-2:29 pm
1 stop13h 47m
Castries Hewanorra
Sat 8/29
3:19 pm-9:29 am
2 stops21h 10m
$1,138
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sat 8/22
8:00 am-7:00 pm
2 stops32h 00m
Castries George F. L. Charle
Sat 8/29
12:35 pm-9:07 pm
2 stops35h 32m
$1,295
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Fri 7/24
10:45 am-10:10 pm
3 stops32h 25m
Castries George F. L. Charle
Fri 7/31
6:00 pm-10:42 pm
3 stops31h 42m
$1,750
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sun 7/26
7:35 pm-7:00 pm
3 stops20h 25m
Castries George F. L. Charle
Sun 8/2
5:00 am-9:07 pm
2 stops19h 07m
$2,462
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 June 13, 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.
Boarding
7.5
Comfort
7.2
Overall
7.1
Entertainment
6.9
Crew
7.9
Food
6.4
Reviews
1 / 20
2.0
MediocreAnonymous,Apr 2026
DFW - BDL
Boarding
7.5
Comfort
7.2
Overall
7.1
Entertainment
6.9
Crew
7.9
Food
6.4
Reviews
1 / 20
2.0
MediocreAnonymous,Apr 2026
DFW - BDL
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.
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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 June 13, 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 June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$668 | Average$1,077 | FlexibilityNo cancel fee | On-time71% |