$453+ 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 6/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Jun 29 — Jul 61
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
One-way
Cheapest flights from Seattle to Saint LuciaExplore the most affordable flight options available from Seattle to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 30, 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 30, 2026.
This Delta deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/293:55 pm
SEA
- UVF
1 stop19h 31m
Delta
Mon 11/24:41 pm
UVF
- SEA
1 stop21h 45m
Delta
Deal found 5/30![Delta logo]()
$614
This American Airlines deal was found by Cheapflights users on 5/27. 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 stops16h 42m
American Airlines
Tue 7/73:20 pm
UVF
- SEA
2 stops21h 07m
American Airlines
Deal found 5/27![American Airlines logo]()
$640
This Air Canada deal was found by Cheapflights users on 5/30. 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 5/30![Air Canada logo]()
$655
This American Airlines deal was found by Cheapflights users on 5/25. 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 6/81:00 pm
SEA
- UVF
1 stop20h 04m
American Airlines
Sat 6/133:16 pm
UVF
- SEA
1 stop21h 34m
American Airlines
Deal found 5/25![American Airlines logo]()
$660
This United Airlines deal was found by Cheapflights users on 5/28. 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 7/311:11 pm
SEA
- UVF
1 stop13h 20m
United Airlines
Sat 7/1112:55 pm
UVF
- SEA
2 stops22h 00m
United Airlines
Deal found 5/28![United Airlines logo]()
$674
This American Airlines deal was found by Cheapflights users on 5/25. 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 7/103:20 pm
UVF
- SEA
2 stops21h 04m
American Airlines
Deal found 5/25![American Airlines logo]()
$677
This Air Canada deal was found by Cheapflights users on 5/25. 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.
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 5/25![Air Canada logo]()
$686
This Mytrip deal was found by Cheapflights users on 5/28. 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 7/227:00 am
SEA
- SLU
3 stops27h 10m
Multiple Airlines
Tue 7/2812:35 pm
SLU
- SEA
3 stops35h 25m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$1,577
This Travelocity deal was found by Cheapflights users on 5/29. 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 12/217:45 am
SEA
- SLU
2 stops31h 15m
Multiple Airlines
Sat 1/23:45 pm
SLU
- SEA
2 stops57h 09m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$2,352
This Travelocity deal was found by Cheapflights users on 5/28. 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.
Tue 7/78:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Tue 7/147:10 pm
SLU
- SEA
3 stops28h 57m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$2,843
This Expedia deal was found by Cheapflights users on 5/25. 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 6/88:00 am
SEA
- SLU
2 stops28h 35m
Multiple Airlines
Sat 6/1312:35 pm
SLU
- SEA
2 stops35h 33m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$3,612
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 30, 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 30, 2026.
This Delta deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/293:55 pm
SEA
- UVF
1 stop19h 31m
Delta
Mon 11/24:41 pm
UVF
- SEA
1 stop21h 45m
Delta
Deal found 5/30![Delta logo]()
$614
This American Airlines deal was found by Cheapflights users on 5/27. 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 stops16h 42m
American Airlines
Tue 7/73:20 pm
UVF
- SEA
2 stops21h 07m
American Airlines
Deal found 5/27![American Airlines logo]()
$640
This Air Canada deal was found by Cheapflights users on 5/30. 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 5/30![Air Canada logo]()
$655
This United Airlines deal was found by Cheapflights users on 5/28. 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 7/311:11 pm
SEA
- UVF
1 stop13h 20m
United Airlines
Sat 7/1112:55 pm
UVF
- SEA
2 stops22h 00m
United Airlines
Deal found 5/28![United Airlines logo]()
$674
This Air Canada deal was found by Cheapflights users on 5/30. 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.
Wed 7/13:00 pm
SEA
- UVF
2 stops44h 10m
Air Canada
Tue 7/73:05 pm
UVF
- SEA
2 stops46h 02m
Air Canada
Deal found 5/30![Air Canada logo]()
$771
This Mytrip deal was found by Cheapflights users on 5/28. 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 7/227:00 am
SEA
- SLU
3 stops27h 10m
Multiple Airlines
Tue 7/2812:35 pm
SLU
- SEA
3 stops35h 25m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$1,577
This Travelocity deal was found by Cheapflights users on 5/28. 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.
Tue 7/78:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Tue 7/147:10 pm
SLU
- SEA
3 stops28h 57m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$2,843
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated May 30, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated May 30, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/25. 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 6/58:45 pm
SEA
- UVF
1 stop12h 19m
American Airlines
Fri 6/123:16 pm
UVF
- SEA
1 stop21h 34m
American Airlines
Deal found 5/25![American Airlines logo]()
$706
This Air Canada deal was found by Cheapflights users on 5/25. 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 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 5/25![Air Canada logo]()
$775
This American Airlines deal was found by Cheapflights users on 5/25. 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 6/81:00 pm
SEA
- UVF
1 stop20h 04m
American Airlines
Sat 6/133:16 pm
UVF
- SEA
1 stop21h 34m
American Airlines
Deal found 5/25![American Airlines logo]()
$660
This Air Canada deal was found by Cheapflights users on 5/25. 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.
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 5/25![Air Canada logo]()
$686
This FlightHub deal was found by Cheapflights users on 5/25. 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.
Mon 6/88:00 am
SEA
- UVF
1 stop27h 10m
Multiple Airlines
Sun 6/141:50 pm
UVF
- SEA
1 stop34h 18m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$947
This Expedia deal was found by Cheapflights users on 5/25. 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 6/88:00 am
SEA
- SLU
2 stops28h 35m
Multiple Airlines
Sat 6/1312:35 pm
SLU
- SEA
2 stops35h 33m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$3,612
This FlightHub deal was found by Cheapflights users on 5/25. 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 5/25![Multiple Airlines logo]()
$856
This Delta deal was found by Cheapflights users on 5/25. 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.
Tue 6/94:05 pm
SEA
- UVF
1 stop19h 08m
Delta
Fri 6/123:33 pm
UVF
- SEA
1 stop21h 27m
Delta
Deal found 5/25![Delta logo]()
$940
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 30, 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 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2711:15 pm
SEA
- SLU
2 stops53h 55m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$453
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 30, 2026.
Round-trip from | $614 (Delta) |
|---|---|
One-way from | $453 (Kiwi.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 May 30, 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 10/29
3:55 pm-2:26 pm
1 stop19h 31m
Castries Hewanorra
Mon 11/2
4:41 pm-10:26 am
1 stop21h 45m
$614
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 7/1
6:08 pm-1:50 pm
2 stops16h 42m
Castries Hewanorra
Tue 7/7
3:20 pm-9:27 am
2 stops21h 07m
$640
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-2:37 pm
2 stops25h 12m
$655
Quickest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 7/3
11:11 pm-3:31 pm
1 stop13h 20m
Castries Hewanorra
Sat 7/11
12:55 pm-7:55 am
2 stops22h 00m
$674
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 7/1
3:00 pm-2:10 pm
2 stops44h 10m
Castries Hewanorra
Tue 7/7
3:05 pm-10:07 am
2 stops46h 02m
$771
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Wed 7/22
7:00 am-1:10 pm
3 stops27h 10m
Castries George F. L. Charle
Tue 7/28
12:35 pm-9:00 pm
3 stops35h 25m
$1,577
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Tue 7/7
8:00 am-7:00 pm
2 stops32h 00m
Castries George F. L. Charle
Tue 7/14
7:10 pm-9:07 pm
3 stops28h 57m
$2,843
Cheapest one-way
Quickest one-way
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sat 6/27
11:15 pm-8:10 am
2 stops53h 55m
$453
Sorted 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 30, 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.
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
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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Complete your trip
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Alternative routes for Seattle to Saint Lucia
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Saint Lucia by adding a car rental and/or hotel reservation to your travel itinerary.
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 30, 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 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$264 | Average$1,210 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$668 | Average$956 | FlexibilityNo cancel fee | On-time71% |