$528+ 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Aug 12 — Aug 191
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Saint Lucia with Cheapflights
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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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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 13, 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 13, 2026.
This Delta deal was found by Cheapflights users on 7/8. 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.
Tue 11/310:35 pm
SEA
- UVF
1 stop12h 51m
Delta
Fri 11/134:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 7/8![Delta logo]()
$528
This American Airlines deal was found by Cheapflights users on 7/8. 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 8/205:31 pm
SEA
- UVF
2 stops17h 18m
American Airlines
Thu 8/272:49 pm
UVF
- SEA
2 stops21h 40m
American Airlines
Deal found 7/8![American Airlines logo]()
$533
This Delta deal was found by Cheapflights users on 7/8. 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.
Mon 11/210:35 pm
SEA
- UVF
1 stop12h 51m
Delta
Thu 11/124:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 7/8![Delta logo]()
$571
This Delta deal was found by Cheapflights users on 7/10. 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.
Tue 9/111:59 pm
SEA
- UVF
1 stop11h 15m
Delta
Sat 9/53:34 pm
UVF
- SEA
1 stop21h 15m
Delta
Deal found 7/10![Delta logo]()
$604
This Delta deal was found by Cheapflights users on 7/8. 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.
Mon 11/210:35 pm
SEA
- UVF
1 stop12h 51m
Delta
Mon 11/164:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 7/8![Delta logo]()
$647
This Delta deal was found by Cheapflights users on 7/8. 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 11/13:15 pm
SEA
- UVF
1 stop20h 11m
Delta
Wed 11/114:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 7/8![Delta logo]()
$650
This Delta deal was found by Cheapflights users on 7/8. 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.
Mon 11/23:15 pm
SEA
- UVF
1 stop20h 11m
Delta
Tue 11/174:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 7/8![Delta logo]()
$693
This Air Canada deal was found by Cheapflights users on 7/8. 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 11/410:10 am
SEA
- UVF
2 stops26h 30m
Air Canada
Fri 11/135:40 pm
UVF
- SEA
2 stops24h 57m
Air Canada
Deal found 7/8![Air Canada logo]()
$696
This American Airlines deal was found by Cheapflights users on 7/12. 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 8/118:21 pm
SEA
- UVF
1 stop14h 28m
American Airlines
Thu 8/202:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 7/12![American Airlines logo]()
$699
This Expedia deal was found by Cheapflights users on 7/8. 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.
Fri 11/207:45 am
SEA
- SLU
2 stops31h 15m
Multiple Airlines
Sun 11/2912:35 pm
SLU
- SEA
2 stops36h 24m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,040
This oojo deal was found by Cheapflights users on 7/8. 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 9/2610:45 pm
SEA
- SLU
2 stops38h 20m
Multiple Airlines
Sun 10/45:00 am
SLU
- SEA
2 stops19h 54m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,220
This Travelocity deal was found by Cheapflights users on 7/10. 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 9/18:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Tue 9/83:45 pm
SLU
- SEA
2 stops56h 19m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$1,227
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 13, 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 13, 2026.
This Delta deal was found by Cheapflights users on 7/8. 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.
Tue 11/310:35 pm
SEA
- UVF
1 stop12h 51m
Delta
Fri 11/134:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 7/8![Delta logo]()
$528
This American Airlines deal was found by Cheapflights users on 7/10. 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 8/2012:58 pm
SEA
- UVF
1 stop21h 51m
American Airlines
Thu 8/272:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 7/10![American Airlines logo]()
$542
This FlightHub deal was found by Cheapflights users on 7/12. 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 8/310:19 pm
SEA
- UVF
1 stop11h 19m
Multiple Airlines
Tue 8/113:15 pm
UVF
- SEA
2 stops45h 50m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$921
This Delta deal was found by Cheapflights users on 7/8. 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.
Mon 11/210:35 pm
SEA
- UVF
1 stop12h 51m
Delta
Thu 11/124:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 7/8![Delta logo]()
$571
This Delta deal was found by Cheapflights users on 7/8. 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.
Thu 11/53:15 pm
SEA
- UVF
1 stop20h 11m
Delta
Fri 11/134:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 7/8![Delta logo]()
$571
This Delta deal was found by Cheapflights users on 7/8. 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.
Tue 11/33:15 pm
SEA
- UVF
1 stop20h 11m
Delta
Mon 11/164:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 7/8![Delta logo]()
$604
This American Airlines deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:38 pm
SEA
- UVF
2 stops17h 22m
American Airlines
Mon 10/124:04 pm
UVF
- SEA
2 stops22h 10m
American Airlines
Deal found 7/12![American Airlines logo]()
$777
This Expedia deal was found by Cheapflights users on 7/8. 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.
Fri 11/207:45 am
SEA
- SLU
2 stops31h 15m
Multiple Airlines
Sun 11/2912:35 pm
SLU
- SEA
2 stops36h 24m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,040
This Delta deal was found by Cheapflights users on 7/10. 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.
Thu 9/311:59 pm
SEA
- UVF
1 stop11h 15m
Delta
Sat 9/53:34 pm
UVF
- SEA
1 stop21h 15m
Delta
Deal found 7/10![Delta logo]()
$862
This Delta deal was found by Cheapflights users on 7/10. 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.
Mon 8/316:00 am
SEA
- UVF
1 stop29h 14m
Delta
Sat 9/53:34 pm
UVF
- SEA
1 stop21h 15m
Delta
Deal found 7/10![Delta logo]()
$869
This oojo deal was found by Cheapflights users on 7/8. 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 9/2610:45 pm
SEA
- SLU
2 stops38h 20m
Multiple Airlines
Sun 10/45:00 am
SLU
- SEA
2 stops19h 54m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,220
This Delta deal was found by Cheapflights users on 7/10. 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.
Fri 9/410:35 pm
SEA
- UVF
1 stop12h 39m
Delta
Wed 9/93:32 pm
UVF
- SEA
1 stop21h 18m
Delta
Deal found 7/10![Delta logo]()
$908
This Travelocity deal was found by Cheapflights users on 7/10. 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 9/18:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Tue 9/83:45 pm
SLU
- SEA
2 stops56h 19m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$1,227
This oojo deal was found by Cheapflights users on 7/12. 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 10/88:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Mon 10/127:40 pm
SLU
- SEA
2 stops17h 55m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$1,267
This oojo deal was found by Cheapflights users on 7/12. 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 8/118:00 am
SEA
- SLU
2 stops22h 30m
Multiple Airlines
Thu 8/205:50 pm
SLU
- SEA
2 stops31h 10m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$1,576
This oojo deal was found by Cheapflights users on 7/13. 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 12/247:55 am
SEA
- SLU
2 stops26h 40m
Multiple Airlines
Mon 12/287:40 pm
SLU
- SEA
2 stops18h 35m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$1,622
This oojo deal was found by Cheapflights users on 7/9. 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 7/9![Multiple Airlines logo]()
$1,813
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated July 13, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated July 13, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 7/11. 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 7/298:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sun 8/23:45 pm
SLU
- SEA
2 stops56h 22m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$1,654
This oojo deal was found by Cheapflights users on 7/9. 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 7/9![Multiple Airlines logo]()
$1,813
This American Airlines deal was found by Cheapflights users on 7/12. 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 8/118:21 pm
SEA
- UVF
1 stop14h 28m
American Airlines
Thu 8/202:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 7/12![American Airlines logo]()
$699
This oojo deal was found by Cheapflights users on 7/12. 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 8/118:00 am
SEA
- SLU
2 stops22h 30m
Multiple Airlines
Thu 8/205:50 pm
SLU
- SEA
2 stops31h 10m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$1,576
This American Airlines deal was found by Cheapflights users on 7/8. 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 8/205:31 pm
SEA
- UVF
2 stops17h 18m
American Airlines
Thu 8/272:49 pm
UVF
- SEA
1 stop12h 31m
American Airlines
Deal found 7/8![American Airlines logo]()
$533
This oojo deal was found by Cheapflights users on 7/10. 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 8/207:59 am
SEA
- SLU
2 stops27h 36m
Multiple Airlines
Thu 8/275:50 pm
SLU
- SEA
2 stops31h 10m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$2,223
This Delta deal was found by Cheapflights users on 7/10. 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.
Sat 8/293:50 pm
SEA
- UVF
1 stop19h 24m
Delta
Sat 9/53:34 pm
UVF
- SEA
1 stop21h 15m
Delta
Deal found 7/10![Delta logo]()
$726
This Delta deal was found by Cheapflights users on 7/10. 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.
Sat 8/293:50 pm
SEA
- UVF
1 stop19h 24m
Delta
Wed 9/93:32 pm
UVF
- SEA
1 stop21h 18m
Delta
Deal found 7/10![Delta logo]()
$772
This Delta deal was found by Cheapflights users on 7/10. 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.
Sat 8/293:50 pm
SEA
- UVF
1 stop19h 24m
Delta
Sun 9/63:34 pm
UVF
- SEA
1 stop21h 15m
Delta
Deal found 7/10![Delta logo]()
$821
This Delta deal was found by Cheapflights users on 7/10. 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.
Sat 8/293:50 pm
SEA
- UVF
1 stop19h 24m
Delta
Fri 9/113:32 pm
UVF
- SEA
1 stop33h 17m
Delta
Deal found 7/10![Delta logo]()
$870
This Delta deal was found by Cheapflights users on 7/10. 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.
Mon 8/316:00 am
SEA
- UVF
1 stop29h 14m
Delta
Thu 9/103:32 pm
UVF
- SEA
1 stop21h 18m
Delta
Deal found 7/10![Delta logo]()
$793
This Delta deal was found by Cheapflights users on 7/10. 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.
Mon 8/316:00 am
SEA
- UVF
1 stop29h 14m
Delta
Sat 9/53:34 pm
UVF
- SEA
1 stop21h 15m
Delta
Deal found 7/10![Delta logo]()
$869
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 13, 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 13, 2026.
This JetBlue deal was found by Cheapflights users on 7/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/910:13 pm
SEA
- UVF
1 stop11h 26m
JetBlue
Deal found 7/9![JetBlue logo]()
$560
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 8/911:18 pm
SEA
- SLU
3 stops29h 52m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$837
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 13, 2026.
Round-trip from | $528 (Delta) |
|---|
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 13, 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 11/3
10:35 pm-3:26 pm
1 stop12h 51m
Castries Hewanorra
Fri 11/13
4:25 pm-10:26 am
1 stop22h 01m
$528
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 8/20
12:58 pm-1:49 pm
1 stop21h 51m
Castries Hewanorra
Thu 8/27
2:49 pm-12:20 am
1 stop12h 31m
$542
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 11/2
10:35 pm-3:26 pm
1 stop12h 51m
Castries Hewanorra
Thu 11/12
4:25 pm-10:26 am
1 stop22h 01m
$571
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 11/5
3:15 pm-3:26 pm
1 stop20h 11m
Castries Hewanorra
Fri 11/13
4:25 pm-10:26 am
1 stop22h 01m
$571
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 11/3
3:15 pm-3:26 pm
1 stop20h 11m
Castries Hewanorra
Mon 11/16
4:25 pm-10:26 am
1 stop22h 01m
$604
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 10/8
5:38 pm-2:00 pm
2 stops17h 22m
Castries Hewanorra
Mon 10/12
4:04 pm-11:14 am
2 stops22h 10m
$777
Quickest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 9/3
11:59 pm-2:14 pm
1 stop11h 15m
Castries Hewanorra
Sat 9/5
3:34 pm-9:49 am
1 stop21h 15m
$862
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 8/31
6:00 am-2:14 pm
1 stop29h 14m
Castries Hewanorra
Sat 9/5
3:34 pm-9:49 am
1 stop21h 15m
$869
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 9/4
10:35 pm-2:14 pm
1 stop12h 39m
Castries Hewanorra
Wed 9/9
3:32 pm-9:50 am
1 stop21h 18m
$908
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 8/3
10:19 pm-12:38 pm
1 stop11h 19m
Castries Hewanorra
Tue 8/11
3:15 pm-10:05 am
2 stops45h 50m
$921
Showing 1-10 of 19 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 13, 2026.
See what other customers who have flown with Delta and 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
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
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Alternative routes for Seattle to Saint Lucia
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Complete your trip
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Seattle and Saint Lucia flights
Browse other Seattle and Saint Lucia flight options. Last updated on July 13, 2026.
Popular flight searches
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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 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$668 | Average$1,077 | FlexibilityNo cancel fee | On-time71% |