$433+ 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Nov 24 — Dec 11
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
Cheapest
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 October 25, 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 October 25, 2026.
This Mytrip deal was found by Cheapflights users on 10/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/253:15 pm -
2 stops21h 25m
Wed 12/25:35 pm -
3 stops30h 27m
Deal found 10/25![Multiple Airlines logo]()
$822
This Mytrip deal was found by Cheapflights users on 10/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:05 pm -
2 stops17h 35m
Wed 12/165:35 pm -
2 stops33h 14m
Deal found 10/25![Multiple Airlines logo]()
$838
This Air Canada deal was found by Cheapflights users on 10/20. 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 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 -
2 stops32h 22m
Deal found 10/20![Air Canada logo]()
$842
This American Airlines deal was found by Cheapflights users on 10/23. 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 12/79:14 pm -
1 stop12h 18m
Mon 12/142:32 pm -
1 stop14h 27m
Deal found 10/23![American Airlines logo]()
$867
This American Airlines deal was found by Cheapflights users on 10/25. 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.
Wed 12/99:14 pm -
1 stop12h 18m
Wed 12/164:24 pm -
1 stop21h 42m
Deal found 10/25![American Airlines logo]()
$872
This American Airlines deal was found by Cheapflights users on 10/25. 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.
Wed 11/259:14 pm -
1 stop12h 15m
Wed 12/24:24 pm -
1 stop21h 50m
Deal found 10/25![American Airlines logo]()
$922
This American Airlines deal was found by Cheapflights users on 10/20. 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.
Tue 11/109:45 pm -
1 stop13h 19m
Tue 11/172:32 pm -
1 stop13h 27m
Deal found 10/20![American Airlines logo]()
$931
This Mytrip deal was found by Cheapflights users on 10/23. 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.
Mon 12/72:30 pm -
3 stops20h 25m
Mon 12/145:35 pm -
2 stops25h 02m
Deal found 10/23![Multiple Airlines logo]()
$983
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 October 25, 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 October 25, 2026.
This American Airlines deal was found by Cheapflights users on 10/24. 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 2/2110:15 pm -
1 stop12h 50m
Fri 2/264:13 pm -
1 stop21h 53m
Deal found 10/24![American Airlines logo]()
$771
This Mytrip deal was found by Cheapflights users on 10/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:05 pm -
2 stops17h 35m
Wed 12/165:35 pm -
2 stops33h 14m
Deal found 10/25![Multiple Airlines logo]()
$838
This Air Canada deal was found by Cheapflights users on 10/21. 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.
Sun 12/610:10 am -
2 stops26h 30m
Wed 12/95:35 pm -
2 stops43h 57m
Deal found 10/21![Air Canada logo]()
$842
This American Airlines deal was found by Cheapflights users on 10/22. 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.
Tue 3/210:15 pm -
1 stop12h 50m
Fri 3/123:39 pm -
1 stop12h 53m
Deal found 10/22![American Airlines logo]()
$811
This Gotogate deal was found by Cheapflights users on 10/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:40 am -
2 stops28h 00m
Wed 12/25:35 pm -
1 stop31h 24m
Deal found 10/25![Air Canada logo]()
$852
This American Airlines deal was found by Cheapflights users on 10/25. 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 1/299:45 pm -
1 stop13h 53m
Fri 2/53:46 pm -
1 stop13h 13m
Deal found 10/25![American Airlines logo]()
$867
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated October 25, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/20. 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.
Tue 11/109:45 pm -
1 stop13h 19m
Tue 11/172:32 pm -
1 stop13h 27m
Deal found 10/20![American Airlines logo]()
$931
This Booking.com deal was found by Cheapflights users on 10/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:05 pm -
2 stops41h 35m
Tue 11/173:55 pm -
3 stops30h 27m
Deal found 10/20![Multiple Airlines logo]()
$1,275
This Mytrip deal was found by Cheapflights users on 10/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/253:15 pm -
2 stops21h 25m
Wed 12/25:35 pm -
3 stops30h 27m
Deal found 10/25![Multiple Airlines logo]()
$822
This Air Canada deal was found by Cheapflights users on 10/25. 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.
Wed 11/2510:10 am -
2 stops26h 30m
Wed 12/25:35 pm -
2 stops25h 02m
Deal found 10/25![Air Canada logo]()
$842
This American Airlines deal was found by Cheapflights users on 10/25. 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.
Wed 11/259:14 pm -
1 stop12h 15m
Wed 12/24:24 pm -
1 stop21h 50m
Deal found 10/25![American Airlines logo]()
$922
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 October 25, 2026.
Search for one-way flight options from Seattle to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This Orbitz deal was found by Cheapflights users on 10/24. 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.
Sun 11/87:45 am -
1 stop28h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Air Canada logo]()
$433
This Booking.com deal was found by Cheapflights users on 10/24. 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 11/77:05 pm -
2 stops41h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Air Canada logo]()
$439
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/610:40 pm -
1 stop12h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Delta logo]()
$454
This American Airlines deal was found by Cheapflights users on 10/24. 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 12/319:23 pm -
1 stop13h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![American Airlines logo]()
$470
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 11/89:59 pm -
3 stops36h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$542
This American Airlines deal was found by Cheapflights users on 10/24. 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 11/99:14 pm -
1 stop14h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![American Airlines logo]()
$567
This United Airlines deal was found by Cheapflights users on 10/24. 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 12/311:02 pm -
3 stops44h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![United Airlines logo]()
$627
This Mytrip deal was found by Cheapflights users on 10/24. 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 11/98:40 am -
3 stops26h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$705
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 11/711:02 pm -
3 stops32h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$1,020
This WestJet deal was found by Cheapflights users on 10/22. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/61:36 pm -
2 stops45h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![WestJet logo]()
$2,153
This WestJet deal was found by Cheapflights users on 10/25. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/91:36 pm -
2 stops21h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![WestJet logo]()
$2,183
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 October 25, 2026.
Round-trip from | $771 (American Airlines) |
|---|---|
One-way from | $433 (Orbitz) |
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 October 25, 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
Sun 11/8
3:15 pm-4:40 pm
2 stops21h 25m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$433
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sat 11/7
7:05 pm-4:40 pm
2 stops41h 35m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$439
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Wed 12/9
2:05 pm-3:04 pm
1 stop20h 59m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$454
Quickest round-trip
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sun 12/6
10:40 pm-3:04 pm
1 stop12h 24m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$454
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Mon 11/9
9:14 pm-3:41 pm
1 stop14h 27m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$567
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Thu 12/31
1:02 pm-1:07 pm
3 stops44h 05m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$627
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sun 2/21
10:15 pm-3:05 pm
1 stop12h 50m
Castries Hewanorra
Fri 2/26
4:13 pm-10:06 am
1 stop21h 53m
$771
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Tue 3/2
10:15 pm-3:05 pm
1 stop12h 50m
Castries Hewanorra
Fri 3/12
3:39 pm-12:32 am
1 stop12h 53m
$811
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Wed 12/9
7:05 pm-4:40 pm
2 stops17h 35m
Castries Hewanorra
Wed 12/16
5:35 pm-10:49 pm
2 stops33h 14m
$838
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sun 12/6
10:10 am-4:40 pm
2 stops26h 30m
Castries Hewanorra
Wed 12/9
5:35 pm-9:32 am
2 stops43h 57m
$842
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
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
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 October 25, 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.
Overall
7.0
Food
6.4
Entertainment
6.8
Crew
7.9
Comfort
7.1
Boarding
7.4
Reviews
1 / 20
10.0
ExcellentLinda,Jul 2026
ROA - CLT
Overall
7.0
Food
6.4
Entertainment
6.8
Crew
7.9
Comfort
7.1
Boarding
7.4
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
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 October 25, 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 October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$752 | Average$956 | FlexibilityNo cancel fee | On-time71% |