$304+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Jul 31 — Aug 71
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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Best
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 July 1, 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 1, 2026.
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Fri 8/288:21 pm
SEA
- UVF
2 stops14h 58m
American Airlines
Wed 9/22:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 6/30![American Airlines logo]()
$533
This American Airlines deal was found by Cheapflights users on 7/1. 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 9/18:21 pm
SEA
- UVF
1 stop14h 28m
American Airlines
Tue 9/153:02 pm
UVF
- SEA
2 stops24h 48m
American Airlines
Deal found 7/1![American Airlines logo]()
$655
This American Airlines deal was found by Cheapflights users on 6/27. 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 8/129:42 pm
SEA
- UVF
1 stop13h 37m
American Airlines
Wed 8/192:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 6/27![American Airlines logo]()
$696
This Travelocity deal was found by Cheapflights users on 6/29. 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 11/307:05 pm
SEA
- UVF
2 stops41h 35m
Air Canada
Wed 12/95:40 pm
UVF
- SEA
2 stops28h 42m
Air Canada
Deal found 6/29![Air Canada logo]()
$704
This American Airlines deal was found by Cheapflights users on 6/29. 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.
Mon 11/3010:08 pm
SEA
- UVF
1 stop11h 13m
American Airlines
Wed 12/92:23 pm
UVF
- SEA
1 stop12h 53m
American Airlines
Deal found 6/29![American Airlines logo]()
$770
This Mytrip deal was found by Cheapflights users on 6/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/303:10 pm
SEA
- UVF
3 stops19h 40m
Multiple Airlines
Wed 12/95:40 pm
UVF
- SEA
2 stops24h 57m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$870
This Justfly.com deal was found by Cheapflights users on 6/27. 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 8/410:19 pm
SEA
- UVF
1 stop14h 03m
JetBlue
Wed 8/121:59 pm
UVF
- SEA
1 stop34h 09m
JetBlue
Deal found 6/27![JetBlue logo]()
$882
This American Airlines deal was found by Cheapflights users on 6/30. 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.
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 6/30![American Airlines logo]()
$923
This oojo deal was found by Cheapflights users on 6/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/278:00 am
SEA
- SLU
2 stops22h 30m
Multiple Airlines
Tue 11/311:45 am
SLU
- SEA
2 stops26h 30m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$1,239
This oojo deal was found by Cheapflights users on 6/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/309:30 pm
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Wed 12/910:15 am
SLU
- SEA
2 stops28h 00m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,270
This oojo deal was found by Cheapflights users on 7/1. 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 9/110:45 pm
SEA
- SLU
2 stops35h 25m
Multiple Airlines
Tue 9/1511:45 am
SLU
- SEA
2 stops25h 49m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$1,337
This oojo deal was found by Cheapflights users on 6/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:13 am
SEA
- SLU
2 stops34h 57m
Multiple Airlines
Wed 9/210:15 am
SLU
- SEA
3 stops27h 19m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$1,425
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 1, 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 1, 2026.
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Fri 8/288:21 pm
SEA
- UVF
2 stops14h 58m
American Airlines
Wed 9/22:49 pm
UVF
- SEA
2 stops21h 40m
American Airlines
Deal found 6/30![American Airlines logo]()
$655
This Travelocity deal was found by Cheapflights users on 6/29. 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 11/307:05 pm
SEA
- UVF
2 stops41h 35m
Air Canada
Wed 12/95:40 pm
UVF
- SEA
2 stops28h 42m
Air Canada
Deal found 6/29![Air Canada logo]()
$704
This Justfly.com deal was found by Cheapflights users on 6/27. 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 8/410:19 pm
SEA
- UVF
1 stop14h 03m
JetBlue
Wed 8/121:59 pm
UVF
- SEA
1 stop34h 09m
JetBlue
Deal found 6/27![JetBlue logo]()
$882
This oojo deal was found by Cheapflights users on 6/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/309:30 pm
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Wed 12/910:15 am
SLU
- SEA
2 stops28h 00m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,270
This American Airlines deal was found by Cheapflights users on 7/1. 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 9/12:47 pm
SEA
- UVF
2 stops20h 02m
American Airlines
Tue 9/153:02 pm
UVF
- SEA
2 stops22h 07m
American Airlines
Deal found 7/1![American Airlines logo]()
$655
This American Airlines deal was found by Cheapflights users on 6/27. 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 8/128:21 pm
SEA
- UVF
2 stops14h 58m
American Airlines
Wed 8/192:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 6/27![American Airlines logo]()
$701
This Orbitz deal was found by Cheapflights users on 6/28. 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 Orbitz 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 8/134:17 pm
UVF
- SEA
2 stops33h 36m
JetBlue
Deal found 6/28![JetBlue logo]()
$924
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Tue 8/46:15 pm
SEA
- UVF
2 stops16h 34m
American Airlines
Thu 8/133:19 pm
UVF
- SEA
2 stops21h 06m
American Airlines
Deal found 6/30![American Airlines logo]()
$928
This oojo deal was found by Cheapflights users on 7/1. 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 9/110:45 pm
SEA
- SLU
2 stops35h 25m
Multiple Airlines
Tue 9/1511:45 am
SLU
- SEA
2 stops25h 49m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$1,337
This oojo deal was found by Cheapflights users on 6/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:13 am
SEA
- SLU
2 stops34h 57m
Multiple Airlines
Wed 9/210:15 am
SLU
- SEA
2 stops27h 19m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$1,455
This oojo deal was found by Cheapflights users on 6/26. 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.
Sun 8/99:33 pm
SEA
- SLU
2 stops31h 37m
Multiple Airlines
Sun 8/165:00 am
SLU
- SEA
2 stops32h 16m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$1,606
This oojo deal was found by Cheapflights users on 6/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:00 am
SEA
- SLU
2 stops26h 10m
Multiple Airlines
Tue 8/1111:45 am
SLU
- SEA
2 stops37h 15m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$1,771
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 July 1, 2026.
Search for one-way flight options from Seattle to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated July 1, 2026.
This Orbitz deal was found by Cheapflights users on 6/29. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/195:45 am
SEA
- UVF
2 stops53h 25m
Air Canada
Deal found 6/29![Air Canada logo]()
$304
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Mon 8/36:15 pm
SEA
- UVF
2 stops15h 00m
American Airlines
Deal found 6/30![American Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:58 pm
SEA
- SLU
3 stops39h 07m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:37 pm
SEA
- SLU
2 stops21h 28m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$498
This WestJet deal was found by Cheapflights users on 6/29. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:14 am
SEA
- UVF
2 stops25h 36m
WestJet
Deal found 6/29![WestJet logo]()
$513
This Mytrip deal was found by Cheapflights users on 6/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:20 pm
SEA
- UVF
3 stops39h 50m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$555
This Mytrip deal was found by Cheapflights users on 6/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/310:40 am
SEA
- UVF
3 stops24h 40m
Air Canada
Deal found 6/30![Air Canada logo]()
$635
This American Airlines deal was found by Cheapflights users on 6/29. 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.
Sun 7/198:45 pm
SEA
- UVF
1 stop14h 05m
American Airlines
Deal found 6/29![American Airlines logo]()
$733
This oojo deal was found by Cheapflights users on 6/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:00 am
SEA
- SLU
2 stops21h 10m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$1,974
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 1, 2026.
Round-trip from | $533 (American Airlines) |
|---|---|
One-way from | $304 (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 2,558,603 searches. Data last updated July 1, 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
Fri 8/28
8:21 pm-2:19 pm
2 stops14h 58m
Castries Hewanorra
Wed 9/2
2:49 pm-9:29 am
2 stops21h 40m
$655
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 9/1
2:47 pm-1:49 pm
2 stops20h 02m
Castries Hewanorra
Tue 9/15
3:02 pm-10:09 am
2 stops22h 07m
$655
Quickest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 8/12
8:21 pm-2:19 pm
2 stops14h 58m
Castries Hewanorra
Wed 8/19
2:49 pm-12:20 am
1 stop12h 31m
$701
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 11/30
7:05 pm-4:40 pm
2 stops41h 35m
Castries Hewanorra
Wed 12/9
5:40 pm-6:22 pm
2 stops28h 42m
$704
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 8/4
10:19 pm-3:22 pm
1 stop14h 03m
Castries Hewanorra
Wed 8/12
1:59 pm-9:08 pm
1 stop34h 09m
$882
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 8/4
10:19 pm-3:22 pm
1 stop14h 03m
Castries Hewanorra
Thu 8/13
4:17 pm-10:53 pm
2 stops33h 36m
$924
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 8/4
6:15 pm-1:49 pm
2 stops16h 34m
Castries Hewanorra
Thu 8/13
3:19 pm-9:25 am
2 stops21h 06m
$928
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Mon 11/30
9:30 pm-9:30 am
2 stops32h 00m
Castries George F. L. Charle
Wed 12/9
10:15 am-10:15 am
2 stops28h 00m
$1,270
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Tue 9/1
10:45 pm-1:10 pm
2 stops35h 25m
Castries George F. L. Charle
Tue 9/15
11:45 am-10:34 am
2 stops25h 49m
$1,337
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Fri 8/28
8:13 am-10:10 pm
2 stops34h 57m
Castries George F. L. Charle
Wed 9/2
10:15 am-10:34 am
2 stops27h 19m
$1,455
Showing 1-10 of 20 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 1, 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
Food
6.4
Overall
7.1
Crew
7.9
Comfort
7.2
Boarding
7.5
Reviews
1 / 20
2.0
MediocreAnonymous,Apr 2026
DFW - BDL
Entertainment
6.8
Food
6.4
Overall
7.1
Crew
7.9
Comfort
7.2
Boarding
7.5
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.
Browse thousands of different options on Cheapflights for your next 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 July 1, 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 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$668 | Average$1,077 | FlexibilityNo cancel fee | On-time71% |