$731+ 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Jul 23 — Jul 301
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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Best
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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 June 23, 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 June 23, 2026.
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:08 pm
SEA
- UVF
2 stops16h 38m
American Airlines
Mon 7/63:20 pm
UVF
- SEA
2 stops21h 07m
American Airlines
Deal found 6/21![American Airlines logo]()
$731
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:38 pm
SEA
- UVF
2 stops17h 12m
American Airlines
Tue 7/73:20 pm
UVF
- SEA
2 stops21h 07m
American Airlines
Deal found 6/21![American Airlines logo]()
$736
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:45 pm
SEA
- UVF
2 stops14h 35m
American Airlines
Mon 7/272:50 pm
UVF
- SEA
1 stop12h 17m
American Airlines
Deal found 6/21![American Airlines logo]()
$777
This Justfly.com deal was found by Cheapflights users on 6/22. 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 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 stop11h 18m
JetBlue
Mon 8/104:17 pm
UVF
- SEA
1 stop31h 51m
JetBlue
Deal found 6/22![JetBlue logo]()
$826
This Justfly.com deal was found by Cheapflights users on 6/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/610:13 pm
SEA
- UVF
1 stop11h 26m
JetBlue
Mon 8/104:17 pm
UVF
- SEA
1 stop31h 51m
JetBlue
Deal found 6/22![JetBlue logo]()
$850
This Expedia deal was found by Cheapflights users on 6/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:19 pm
SEA
- UVF
1 stop11h 18m
JetBlue
Tue 8/111:59 pm
UVF
- SEA
1 stop34h 09m
JetBlue
Deal found 6/20![JetBlue logo]()
$852
This Justfly.com deal was found by Cheapflights users on 6/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/510:19 pm
SEA
- UVF
1 stop13h 53m
JetBlue
Mon 8/104:17 pm
UVF
- SEA
1 stop31h 51m
JetBlue
Deal found 6/22![JetBlue logo]()
$861
This Justfly.com deal was found by Cheapflights users on 6/22. 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 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 stop11h 18m
JetBlue
Wed 8/124:17 pm
UVF
- SEA
1 stop31h 51m
JetBlue
Deal found 6/22![JetBlue logo]()
$882
This Justfly.com deal was found by Cheapflights users on 6/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/310:19 pm
SEA
- UVF
1 stop11h 19m
JetBlue
Mon 8/104:17 pm
UVF
- SEA
1 stop31h 51m
JetBlue
Deal found 6/22![JetBlue logo]()
$906
This American Airlines deal was found by Cheapflights users on 6/23. 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 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 6/23![American Airlines logo]()
$923
This Orbitz deal was found by Cheapflights users on 6/23. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 10/1712:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$1,032
This oojo deal was found by Cheapflights users on 6/22. 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.
Tue 9/2210:45 pm
SEA
- SLU
2 stops35h 25m
Multiple Airlines
Fri 10/26:00 pm
SLU
- SEA
2 stops19h 35m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,260
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 June 23, 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 June 23, 2026.
This Expedia deal was found by Cheapflights users on 6/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:19 pm
SEA
- UVF
1 stop11h 18m
JetBlue
Tue 8/111:59 pm
UVF
- SEA
1 stop34h 09m
JetBlue
Deal found 6/20![JetBlue logo]()
$852
This American Airlines deal was found by Cheapflights users on 6/23. 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.
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 6/23![American Airlines logo]()
$928
This Justfly.com deal was found by Cheapflights users on 6/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/68:00 am
SEA
- UVF
1 stop27h 20m
Air Canada
Tue 8/113:15 pm
UVF
- SEA
1 stop32h 52m
Air Canada
Deal found 6/21![Air Canada logo]()
$966
This Orbitz deal was found by Cheapflights users on 6/23. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sat 10/1712:35 pm
SLU
- SEA
2 stops35h 29m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$1,032
This American Airlines deal was found by Cheapflights users on 6/23. 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 8/36:15 pm
SEA
- UVF
2 stops16h 35m
American Airlines
Tue 8/112:49 pm
UVF
- SEA
2 stops21h 40m
American Airlines
Deal found 6/23![American Airlines logo]()
$928
This FlightHub deal was found by Cheapflights users on 6/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:19 pm
SEA
- UVF
1 stop11h 18m
JetBlue
Wed 8/124:17 pm
UVF
- SEA
2 stops33h 36m
JetBlue
Deal found 6/23![JetBlue logo]()
$1,034
This American Airlines deal was found by Cheapflights users on 6/20. 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 8/46:15 pm
SEA
- UVF
2 stops16h 34m
American Airlines
Tue 8/112:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 6/20![American Airlines logo]()
$1,079
This oojo deal was found by Cheapflights users on 6/22. 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.
Tue 9/2210:45 pm
SEA
- SLU
2 stops35h 25m
Multiple Airlines
Fri 10/26:00 pm
SLU
- SEA
2 stops19h 35m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,260
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2412:56 pm
SEA
- UVF
1 stop20h 12m
American Airlines
Sun 7/262:50 pm
UVF
- SEA
1 stop24h 06m
American Airlines
Deal found 6/21![American Airlines logo]()
$1,098
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Tue 8/48:45 pm
SEA
- UVF
1 stop14h 04m
American Airlines
Wed 8/122:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 6/23![American Airlines logo]()
$1,194
This Expedia deal was found by Cheapflights users on 6/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Tue 8/1111:45 am
SLU
- SEA
2 stops36h 22m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$3,306
This Travelocity deal was found by Cheapflights users on 6/22. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/48:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Tue 8/1111:45 am
SLU
- SEA
3 stops36h 22m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$3,306
This Travelocity deal was found by Cheapflights users on 6/22. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/28:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Tue 8/1111:45 am
SLU
- SEA
3 stops36h 22m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$3,375
This Expedia deal was found by Cheapflights users on 6/22. 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 8/18:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Tue 8/1111:45 am
SLU
- SEA
3 stops36h 22m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$3,375
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated June 23, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated June 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/309:35 pm
SEA
- UVF
1 stop13h 41m
American Airlines
Mon 7/63:20 pm
UVF
- SEA
2 stops21h 07m
American Airlines
Deal found 6/21![American Airlines logo]()
$731
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:38 pm
SEA
- UVF
2 stops17h 12m
American Airlines
Tue 7/73:20 pm
UVF
- SEA
2 stops21h 07m
American Airlines
Deal found 6/21![American Airlines logo]()
$736
This Mytrip deal was found by Cheapflights users on 6/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:20 pm
SEA
- UVF
2 stops39h 50m
Multiple Airlines
Tue 7/73:05 pm
UVF
- SEA
3 stops21h 35m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$1,000
This Orbitz deal was found by Cheapflights users on 6/22. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:20 pm
SEA
- UVF
2 stops39h 50m
Multiple Airlines
Wed 7/221:57 pm
UVF
- SEA
1 stop34h 00m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,965
This Orbitz deal was found by Cheapflights users on 6/22. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:19 pm
SEA
- UVF
1 stop11h 17m
JetBlue
Wed 7/221:57 pm
UVF
- SEA
1 stop34h 00m
JetBlue
Deal found 6/22![JetBlue logo]()
$1,979
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:45 pm
SEA
- UVF
2 stops14h 35m
American Airlines
Mon 7/272:50 pm
UVF
- SEA
1 stop12h 17m
American Airlines
Deal found 6/21![American Airlines logo]()
$777
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2412:56 pm
SEA
- UVF
1 stop20h 12m
American Airlines
Sun 7/262:50 pm
UVF
- SEA
1 stop24h 06m
American Airlines
Deal found 6/21![American Airlines logo]()
$1,098
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 June 23, 2026.
Round-trip from | $772 (American Airlines) |
|---|
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 June 23, 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
Tue 8/4
10:19 pm-12:37 pm
1 stop11h 18m
Castries Hewanorra
Tue 8/11
1:59 pm-9:08 pm
1 stop34h 09m
$852
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 - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 8/3
6:15 pm-1:50 pm
2 stops16h 35m
Castries Hewanorra
Tue 8/11
2:49 pm-9:29 am
2 stops21h 40m
$928
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 8/6
8:00 am-2:20 pm
1 stop27h 20m
Castries Hewanorra
Tue 8/11
3:15 pm-9:07 pm
1 stop32h 52m
$966
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sun 10/11
8:00 am-7:00 pm
2 stops32h 00m
Castries George F. L. Charle
Sat 10/17
12:35 pm-9:04 pm
2 stops35h 29m
$1,032
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 8/4
10:19 pm-12:37 pm
1 stop11h 18m
Castries Hewanorra
Wed 8/12
4:17 pm-10:53 pm
2 stops33h 36m
$1,034
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 8/4
6:15 pm-1:49 pm
2 stops16h 34m
Castries Hewanorra
Tue 8/11
2:49 pm-12:20 am
1 stop12h 31m
$1,079
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 7/24
12:56 pm-12:08 pm
1 stop20h 12m
Castries Hewanorra
Sun 7/26
2:50 pm-11:56 am
1 stop24h 06m
$1,098
Quickest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 8/4
8:45 pm-1:49 pm
1 stop14h 04m
Castries Hewanorra
Wed 8/12
2:49 pm-12:20 am
1 stop12h 31m
$1,194
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Tue 9/22
10:45 pm-1:10 pm
2 stops35h 25m
Castries George F. L. Charle
Fri 10/2
6:00 pm-10:35 am
2 stops19h 35m
$1,260
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
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 June 23, 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.
Comfort
7.2
Crew
7.9
Boarding
7.5
Overall
7.1
Entertainment
6.8
Food
6.4
Reviews
1 / 20
2.0
MediocreAnonymous,Apr 2026
DFW - BDL
Comfort
7.2
Crew
7.9
Boarding
7.5
Overall
7.1
Entertainment
6.8
Food
6.4
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.
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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.
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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 June 23, 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 June 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$668 | Average$1,077 | FlexibilityNo cancel fee | On-time71% |