$358+ 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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Oct 30 — Nov 61
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
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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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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 September 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 September 30, 2026.
This American Airlines deal was found by Cheapflights users on 9/27. 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.
Sun 11/159:45 pm -
1 stop13h 19m
Tue 11/244:28 pm -
1 stop21h 44m
Deal found 9/27![American Airlines logo]()
$790
This FlightHub deal was found by Cheapflights users on 9/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:40 am -
2 stops28h 00m
Mon 11/25:35 pm -
2 stops32h 22m
Deal found 9/27![Air Canada logo]()
$812
This American Airlines deal was found by Cheapflights users on 9/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/139:14 pm -
1 stop14h 27m
Fri 11/202:38 pm -
1 stop13h 21m
Deal found 9/28![American Airlines logo]()
$826
This Mytrip deal was found by Cheapflights users on 9/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:05 pm -
2 stops17h 35m
Tue 11/243:55 pm -
3 stops25h 45m
Deal found 9/27![Multiple Airlines logo]()
$833
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/289:42 pm -
1 stop13h 38m
Wed 11/44:41 pm -
2 stops20h 56m
Deal found 9/30![American Airlines logo]()
$836
This Air Canada deal was found by Cheapflights users on 9/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/610:10 am -
2 stops26h 30m
Wed 12/95:35 pm -
2 stops43h 57m
Deal found 9/28![Air Canada logo]()
$852
This American Airlines deal was found by Cheapflights users on 9/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/299:42 pm -
1 stop13h 38m
Mon 11/24:07 pm -
1 stop23h 31m
Deal found 9/29![American Airlines logo]()
$881
This Mytrip deal was found by Cheapflights users on 9/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:40 am -
2 stops28h 00m
Mon 11/25:35 pm -
3 stops29h 19m
Deal found 9/27![Multiple Airlines logo]()
$895
This Booking.com deal was found by Cheapflights users on 9/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/153:15 pm -
3 stops23h 45m
Tue 11/2412:35 pm -
3 stops29h 05m
Deal found 9/27![Multiple Airlines logo]()
$1,515
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 September 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 September 30, 2026.
This American Airlines deal was found by Cheapflights users on 9/27. 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.
Sun 11/156:23 pm -
2 stops15h 07m
Tue 11/243:56 pm -
2 stops21h 41m
Deal found 9/27![American Airlines logo]()
$795
This FlightHub deal was found by Cheapflights users on 9/26. 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 10/298:40 am -
2 stops28h 00m
Mon 11/25:35 pm -
2 stops32h 22m
Deal found 9/26![Air Canada logo]()
$812
This Booking.com deal was found by Cheapflights users on 9/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/153:15 pm -
3 stops23h 45m
Tue 11/2412:35 pm -
3 stops29h 05m
Deal found 9/27![Multiple Airlines logo]()
$1,515
This American Airlines deal was found by Cheapflights users on 9/27. 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 11/119:14 pm -
1 stop14h 27m
Wed 11/182:32 pm -
1 stop13h 27m
Deal found 9/27![American Airlines logo]()
$831
This Air Canada deal was found by Cheapflights users on 9/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:45 am -
1 stop28h 55m
Wed 12/95:35 pm -
1 stop31h 24m
Deal found 9/27![Air Canada logo]()
$852
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:39 pm -
1 stop15h 25m
Wed 11/44:07 pm -
1 stop21h 56m
Deal found 9/30![American Airlines logo]()
$831
This American Airlines deal was found by Cheapflights users on 9/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/139:14 pm -
1 stop12h 16m
Fri 11/203:56 pm -
2 stops21h 41m
Deal found 9/28![American Airlines logo]()
$831
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated September 30, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated September 30, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:39 pm -
1 stop14h 03m
Mon 10/262:42 pm -
1 stop12h 17m
Deal found 9/28![American Airlines logo]()
$946
This American Airlines deal was found by Cheapflights users on 9/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/229:42 pm -
1 stop13h 38m
Tue 10/272:42 pm -
1 stop12h 17m
Deal found 9/29![American Airlines logo]()
$930
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:39 pm -
1 stop15h 25m
Wed 11/44:07 pm -
1 stop21h 56m
Deal found 9/30![American Airlines logo]()
$831
This FlightHub deal was found by Cheapflights users on 9/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:40 am -
2 stops28h 00m
Mon 11/25:35 pm -
2 stops32h 22m
Deal found 9/27![Air Canada logo]()
$812
This American Airlines deal was found by Cheapflights users on 9/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/299:42 pm -
1 stop13h 38m
Mon 11/24:07 pm -
1 stop23h 31m
Deal found 9/29![American Airlines logo]()
$881
This Mytrip deal was found by Cheapflights users on 9/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:40 am -
2 stops28h 00m
Mon 11/25:35 pm -
3 stops29h 19m
Deal found 9/27![Multiple Airlines logo]()
$895
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 September 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 September 30, 2026.
This FlightHub deal was found by Cheapflights users on 9/25. 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.
Sun 11/2210:10 am -
2 stops26h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Air Canada logo]()
$358
This Travelocity deal was found by Cheapflights users on 9/26. 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.
Sat 10/2410:50 am -
2 stops25h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Air Canada logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/222:30 pm -
3 stops44h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![WestJet logo]()
$380
This Air Canada deal was found by Cheapflights users on 9/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:10 am -
2 stops26h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Air Canada logo]()
$402
This Booking.com deal was found by Cheapflights users on 9/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:37 pm -
3 stops44h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$431
This American Airlines deal was found by Cheapflights users on 9/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/129:14 pm -
1 stop12h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![American Airlines logo]()
$446
This FlightHub deal was found by Cheapflights users on 9/25. 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.
Sat 11/217:45 am -
1 stop28h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Air Canada logo]()
$534
This Kiwi.com deal was found by Cheapflights users on 9/26. 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 10/248:40 am -
3 stops26h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Multiple Airlines logo]()
$574
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Thu 11/124:39 pm -
3 stops40h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$2,084
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 September 30, 2026.
Round-trip from | $790 (American Airlines) |
|---|---|
One-way from | $358 (FlightHub) |
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 7,457,451 searches. Data last updated September 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 Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sat 10/24
7:55 am-3:40 pm
1 stop28h 45m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$358
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sun 11/22
10:10 am-4:40 pm
2 stops26h 30m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$358
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sat 11/21
8:40 am-4:40 pm
2 stops52h 00m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$373
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sun 11/22
2:30 pm-2:55 pm
3 stops44h 25m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$380
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Thu 11/12
10:10 am-4:40 pm
2 stops26h 30m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$402
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sat 11/21
4:37 pm-4:40 pm
3 stops44h 03m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$431
Quickest round-trip
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Thu 11/12
9:14 pm-1:30 pm
1 stop12h 16m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$446
SeattleCastries
SEA Seattle/Tacoma Intl - SLU Castries George F. L. Charle
SEASLU
Seattle/Tacoma Intl
Sat 10/24
8:40 am-2:30 pm
3 stops26h 50m
Castries George F. L. Charle
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$574
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sun 11/15
6:23 pm-1:30 pm
2 stops15h 07m
Castries Hewanorra
Tue 11/24
3:56 pm-9:37 am
2 stops21h 41m
$795
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Thu 10/29
8:40 am-3:40 pm
2 stops28h 00m
Castries Hewanorra
Mon 11/2
5:35 pm-9:57 pm
2 stops32h 22m
$812
Showing 1-10 of 16 resultsSorted by cheapest first
Best time to book a flight from Seattle to Saint Lucia
Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from Seattle with our price prediction graph.
SEA-UVF
SEA-SLU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Saint Lucia
SEA-LC0
SEA-UVF
SEA-SLU
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Saint Lucia
Get insights into the airlines that provide service to Saint Lucia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Saint Lucia. Reviews last updated September 30, 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.
Entertainment
6.8
Comfort
7.2
Overall
7.0
Boarding
7.4
Crew
7.9
Food
6.4
Reviews
1 / 20
10.0
ExcellentLinda,Jul 2026
ROA - CLT
Entertainment
6.8
Comfort
7.2
Overall
7.0
Boarding
7.4
Crew
7.9
Food
6.4
Reviews
1 / 20
10.0
ExcellentLinda,Jul 2026
ROA - CLT
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
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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 September 30, 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 7,457,451 searches. Data last updated September 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$752 | Average$1,173 | FlexibilityNo cancel fee | On-time71% |