$672+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Aug 26 — Sep 21
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
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 July 27, 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 July 27, 2026.
This Air Canada deal was found by Cheapflights users on 7/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/13:15 pm
SEA
- UVF
2 stops21h 25m
Air Canada
Sun 12/65:40 pm
UVF
- SEA
2 stops24h 57m
Air Canada
Deal found 7/24![Air Canada logo]()
$672
This Travelocity deal was found by Cheapflights users on 7/26. 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.
Thu 10/158:00 am
SEA
- UVF
1 stop27h 15m
Multiple Airlines
Thu 10/224:25 pm
UVF
- SEA
2 stops33h 13m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$770
This Orbitz deal was found by Cheapflights users on 7/25. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:20 pm
SEA
- UVF
2 stops39h 55m
Multiple Airlines
Wed 10/144:25 pm
UVF
- SEA
1 stop31h 50m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$779
This United Airlines deal was found by Cheapflights users on 7/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1612:43 pm
SEA
- UVF
2 stops21h 48m
United Airlines
Sat 10/3112:52 pm
UVF
- SEA
1 stop13h 07m
United Airlines
Deal found 7/25![United Airlines logo]()
$824
This Priceline deal was found by Cheapflights users on 7/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:40 pm
SEA
- UVF
1 stop14h 40m
JetBlue
Wed 10/144:25 pm
UVF
- SEA
1 stop31h 50m
JetBlue
Deal found 7/25![JetBlue logo]()
$828
This Orbitz deal was found by Cheapflights users on 7/25. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Wed 10/1412:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$836
This Justfly.com deal was found by Cheapflights users on 7/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:05 pm
SEA
- UVF
2 stops41h 35m
Air Canada
Sun 11/295:40 pm
UVF
- SEA
2 stops43h 47m
Air Canada
Deal found 7/27![Air Canada logo]()
$844
This American Airlines deal was found by Cheapflights users on 7/25. 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.
Sat 10/179:00 pm
SEA
- UVF
1 stop15h 03m
American Airlines
Sat 10/313:01 pm
UVF
- SEA
2 stops22h 38m
American Airlines
Deal found 7/25![American Airlines logo]()
$914
This FlightHub deal was found by Cheapflights users on 7/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:10 pm
SEA
- UVF
2 stops19h 45m
Multiple Airlines
Sun 11/295:40 pm
UVF
- SEA
2 stops43h 47m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$918
This American Airlines deal was found by Cheapflights users on 7/24. 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.
Sat 8/229:42 pm
SEA
- UVF
1 stop13h 47m
American Airlines
Sat 8/293:19 pm
UVF
- SEA
1 stop21h 26m
American Airlines
Deal found 7/24![American Airlines logo]()
$969
This oojo deal was found by Cheapflights users on 7/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Thu 10/225:50 pm
SLU
- SEA
2 stops19h 45m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$1,224
This oojo deal was found by Cheapflights users on 7/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:21 am
SEA
- SLU
2 stops21h 09m
Multiple Airlines
Sun 12/65:00 am
SLU
- SEA
2 stops33h 15m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,236
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 July 27, 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 July 27, 2026.
This Travelocity deal was found by Cheapflights users on 7/26. 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.
Thu 10/1510:30 am
SEA
- UVF
2 stops24h 45m
Multiple Airlines
Thu 10/224:25 pm
UVF
- SEA
2 stops33h 13m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$770
This United Airlines deal was found by Cheapflights users on 7/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1612:43 pm
SEA
- UVF
2 stops21h 48m
United Airlines
Sat 10/3112:52 pm
UVF
- SEA
1 stop13h 07m
United Airlines
Deal found 7/25![United Airlines logo]()
$824
This Justfly.com deal was found by Cheapflights users on 7/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/243:15 pm
SEA
- UVF
2 stops45h 25m
Air Canada
Sun 11/295:40 pm
UVF
- SEA
1 stop31h 19m
Air Canada
Deal found 7/27![Air Canada logo]()
$844
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Sat 8/85:32 pm
SEA
- UVF
2 stops17h 17m
American Airlines
Sat 8/153:19 pm
UVF
- SEA
1 stop21h 26m
American Airlines
Deal found 7/22![American Airlines logo]()
$1,053
This Orbitz deal was found by Cheapflights users on 7/25. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:20 pm
SEA
- UVF
2 stops39h 55m
Multiple Airlines
Wed 10/144:25 pm
UVF
- SEA
1 stop31h 50m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$779
This Orbitz deal was found by Cheapflights users on 7/25. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Wed 10/1412:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$836
This oojo deal was found by Cheapflights users on 7/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Thu 10/225:50 pm
SLU
- SEA
2 stops19h 45m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$1,224
This Mytrip deal was found by Cheapflights users on 7/24. 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 9/75:50 am
SEA
- SLU
3 stops23h 20m
Multiple Airlines
Mon 9/1412:35 pm
SLU
- SEA
3 stops33h 10m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,267
This oojo deal was found by Cheapflights users on 7/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:21 am
SEA
- SLU
2 stops21h 09m
Multiple Airlines
Sun 12/65:00 am
SLU
- SEA
3 stops33h 15m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,326
This oojo deal was found by Cheapflights users on 7/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2611:06 am
SEA
- SLU
2 stops23h 24m
Multiple Airlines
Thu 12/315:50 pm
SLU
- SEA
2 stops32h 24m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,724
This oojo deal was found by Cheapflights users on 7/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/209:28 pm
SEA
- SLU
2 stops20h 42m
Multiple Airlines
Sun 11/295:00 am
SLU
- SEA
3 stops33h 15m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,729
This Expedia deal was found by Cheapflights users on 7/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/88:00 am
SEA
- SLU
2 stops52h 15m
Multiple Airlines
Sat 8/153:45 pm
SLU
- SEA
2 stops56h 22m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$2,261
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated July 27, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated July 27, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:45 pm
SEA
- UVF
1 stop14h 05m
American Airlines
Tue 8/112:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 7/26![American Airlines logo]()
$1,048
This FlightHub deal was found by Cheapflights users on 7/25. 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 8/35:50 am
SEA
- UVF
2 stops29h 30m
Air Canada
Tue 8/113:15 pm
UVF
- SEA
2 stops30h 17m
Air Canada
Deal found 7/25![Air Canada logo]()
$1,190
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/412:56 pm
SEA
- UVF
1 stop21h 53m
American Airlines
Thu 8/132:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 7/26![American Airlines logo]()
$1,074
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/412:56 pm
SEA
- UVF
1 stop21h 53m
American Airlines
Wed 8/122:49 pm
UVF
- SEA
2 stops21h 40m
American Airlines
Deal found 7/26![American Airlines logo]()
$1,079
This Justfly.com deal was found by Cheapflights users on 7/23. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:19 pm
SEA
- UVF
1 stop14h 03m
JetBlue
Thu 8/131:59 pm
UVF
- SEA
1 stop34h 09m
JetBlue
Deal found 7/23![JetBlue logo]()
$1,198
This Expedia deal was found by Cheapflights users on 7/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/88:00 am
SEA
- SLU
2 stops52h 15m
Multiple Airlines
Sat 8/153:45 pm
SLU
- SEA
2 stops56h 22m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$2,261
This American Airlines deal was found by Cheapflights users on 7/24. 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.
Sat 8/229:42 pm
SEA
- UVF
1 stop13h 47m
American Airlines
Sat 8/293:19 pm
UVF
- SEA
1 stop21h 26m
American Airlines
Deal found 7/24![American Airlines logo]()
$969
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 July 27, 2026.
Round-trip from | $672 (Travelocity) |
|---|
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 July 27, 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 10/15
10:30 am-2:15 pm
2 stops24h 45m
Castries Hewanorra
Thu 10/22
4:25 pm-10:38 pm
2 stops33h 13m
$770
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 10/7
7:20 pm-2:15 pm
2 stops39h 55m
Castries Hewanorra
Wed 10/14
4:25 pm-9:15 pm
1 stop31h 50m
$779
Quickest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 10/16
12:43 pm-1:31 pm
2 stops21h 48m
Castries Hewanorra
Sat 10/31
12:52 pm-10:59 pm
1 stop13h 07m
$824
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Wed 10/7
8:00 am-7:00 pm
2 stops32h 00m
Castries George F. L. Charle
Wed 10/14
12:35 pm-9:04 pm
2 stops35h 29m
$836
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 11/24
3:15 pm-4:40 pm
2 stops45h 25m
Castries Hewanorra
Sun 11/29
5:40 pm-8:59 pm
1 stop31h 19m
$844
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 8/8
5:32 pm-1:49 pm
2 stops17h 17m
Castries Hewanorra
Sat 8/15
3:19 pm-9:45 am
1 stop21h 26m
$1,053
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Thu 10/15
8:00 am-2:35 pm
2 stops27h 35m
Castries George F. L. Charle
Thu 10/22
5:50 pm-10:35 am
2 stops19h 45m
$1,224
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Mon 9/7
5:50 am-8:10 am
3 stops23h 20m
Castries George F. L. Charle
Mon 9/14
12:35 pm-6:45 pm
3 stops33h 10m
$1,267
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Tue 12/1
8:21 am-9:30 am
2 stops21h 09m
Castries George F. L. Charle
Sun 12/6
5:00 am-10:15 am
3 stops33h 15m
$1,326
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sat 12/26
11:06 am-2:30 pm
2 stops23h 24m
Castries George F. L. Charle
Thu 12/31
5:50 pm-10:14 pm
2 stops32h 24m
$1,724
Showing 1-10 of 12 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 July 27, 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
7.1
Entertainment
6.8
Boarding
7.5
Crew
7.9
Food
6.4
Comfort
7.2
Reviews
1 / 20
10.0
ExcellentLinda,Jul 2026
ROA - CLT
Overall
7.1
Entertainment
6.8
Boarding
7.5
Crew
7.9
Food
6.4
Comfort
7.2
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 July 27, 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 July 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$668 | Average$1,077 | FlexibilityNo cancel fee | On-time71% |