$317+ 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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Jun 4 — Jun 111
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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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 May 5, 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 May 5, 2026.
This American Airlines deal was found by Cheapflights users on 5/2. 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 8/208:35 pm
SEA
- UVF
2 stops14h 39m
American Airlines
Thu 8/273:29 pm
UVF
- SEA
2 stops20h 48m
American Airlines
Deal found 5/2![American Airlines logo]()
$633
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 9/236:21 pm
SEA
- UVF
2 stops16h 29m
American Airlines
Wed 9/304:00 pm
UVF
- SEA
2 stops20h 20m
American Airlines
Deal found 4/30![American Airlines logo]()
$638
This Air Canada deal was found by Cheapflights users on 5/2. 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.
Thu 8/208:00 am
SEA
- UVF
1 stop27h 20m
Air Canada
Fri 8/283:15 pm
UVF
- SEA
1 stop32h 52m
Air Canada
Deal found 5/2![Air Canada logo]()
$738
This Delta deal was found by Cheapflights users on 5/2. 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 8/175:30 pm
SEA
- UVF
1 stop17h 44m
Delta
Mon 8/243:34 pm
UVF
- SEA
1 stop21h 15m
Delta
Deal found 5/2![Delta logo]()
$774
This FlightHub deal was found by Cheapflights users on 5/2. 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.
Wed 8/197:35 pm
SEA
- UVF
2 stops15h 05m
WestJet
Thu 8/272:30 pm
UVF
- SEA
2 stops22h 10m
WestJet
Deal found 5/2![WestJet logo]()
$776
This WestJet deal was found by Cheapflights users on 5/2. 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.
Tue 8/1810:30 am
SEA
- UVF
2 stops48h 10m
WestJet
Sun 8/302:30 pm
UVF
- SEA
2 stops22h 10m
WestJet
Deal found 5/2![WestJet logo]()
$779
This Air Canada deal was found by Cheapflights users on 5/2. 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.
Mon 8/175:45 am
SEA
- UVF
2 stops29h 35m
Air Canada
Fri 8/283:15 pm
UVF
- SEA
2 stops30h 17m
Air Canada
Deal found 5/2![Air Canada logo]()
$788
This Delta deal was found by Cheapflights users on 5/2. 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 8/175:30 pm
SEA
- UVF
1 stop17h 44m
Delta
Thu 8/273:34 pm
UVF
- SEA
1 stop21h 15m
Delta
Deal found 5/2![Delta logo]()
$789
This American Airlines deal was found by Cheapflights users on 5/1. 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.
Sat 5/910:16 pm
SEA
- UVF
1 stop12h 29m
American Airlines
Thu 5/142:45 pm
UVF
- SEA
2 stops22h 29m
American Airlines
Deal found 5/1![American Airlines logo]()
$794
This Mytrip deal was found by Cheapflights users on 4/30. 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.
Sun 6/1411:59 pm
SEA
- UVF
3 stops35h 11m
Multiple Airlines
Sun 6/212:30 pm
UVF
- SEA
3 stops22h 37m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$818
This Mytrip deal was found by Cheapflights users on 4/30. 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.
Wed 9/2310:30 am
SEA
- SLU
3 stops29h 30m
Multiple Airlines
Wed 9/3010:15 am
SLU
- SEA
3 stops33h 53m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$1,162
This Gotogate deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Fri 5/812:35 pm
SLU
- SEA
2 stops35h 33m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$1,250
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 May 5, 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 May 5, 2026.
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 9/236:21 pm
SEA
- UVF
2 stops16h 29m
American Airlines
Wed 9/304:00 pm
UVF
- SEA
2 stops20h 20m
American Airlines
Deal found 4/30![American Airlines logo]()
$638
This Delta deal was found by Cheapflights users on 5/2. 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.
Wed 8/195:30 pm
SEA
- UVF
1 stop17h 44m
Delta
Mon 8/243:34 pm
UVF
- SEA
1 stop21h 15m
Delta
Deal found 5/2![Delta logo]()
$774
This Mytrip deal was found by Cheapflights users on 4/30. 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.
Sun 6/1411:59 pm
SEA
- UVF
3 stops35h 11m
Multiple Airlines
Sun 6/212:30 pm
UVF
- SEA
3 stops22h 37m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$818
This Justfly.com deal was found by Cheapflights users on 5/4. 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.
Sat 5/2311:52 pm
SEA
- UVF
1 stop33h 58m
JetBlue
Sat 5/302:10 pm
UVF
- SEA
1 stop33h 46m
JetBlue
Deal found 5/4![JetBlue logo]()
$945
This Delta deal was found by Cheapflights users on 5/2. 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 8/175:30 pm
SEA
- UVF
1 stop17h 44m
Delta
Thu 8/273:34 pm
UVF
- SEA
1 stop21h 15m
Delta
Deal found 5/2![Delta logo]()
$789
This Orbitz deal was found by Cheapflights users on 5/3. 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.
Thu 6/185:45 am
SEA
- UVF
2 stops29h 35m
Multiple Airlines
Wed 6/244:32 pm
UVF
- SEA
1 stop31h 36m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$936
This Delta deal was found by Cheapflights users on 5/2. 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 8/205:30 pm
SEA
- UVF
1 stop17h 44m
Delta
Wed 8/263:34 pm
UVF
- SEA
1 stop21h 15m
Delta
Deal found 5/2![Delta logo]()
$886
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:55 pm
SEA
- UVF
1 stop19h 28m
Delta
Wed 9/303:38 pm
UVF
- SEA
1 stop21h 27m
Delta
Deal found 4/30![Delta logo]()
$897
This Mytrip deal was found by Cheapflights users on 4/30. 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.
Wed 9/2310:30 am
SEA
- SLU
3 stops29h 30m
Multiple Airlines
Wed 9/3010:15 am
SLU
- SEA
3 stops33h 53m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$1,162
This Delta deal was found by Cheapflights users on 5/2. 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 8/175:30 pm
SEA
- UVF
1 stop17h 44m
Delta
Sun 8/303:34 pm
UVF
- SEA
1 stop21h 31m
Delta
Deal found 5/2![Delta logo]()
$1,035
This Gotogate deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/28:00 am
SEA
- SLU
2 stops32h 00m
Multiple Airlines
Sun 7/53:45 pm
SLU
- SEA
2 stops56h 22m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$1,281
This Mytrip deal was found by Cheapflights users on 5/4. 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.
Thu 6/1811:59 pm
SEA
- SLU
3 stops43h 11m
Multiple Airlines
Thu 6/255:50 pm
SLU
- SEA
3 stops25h 52m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$1,368
This Mytrip deal was found by Cheapflights users on 5/3. 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.
Thu 6/1810:30 am
SEA
- SLU
3 stops29h 30m
Multiple Airlines
Wed 6/2410:15 am
SLU
- SEA
3 stops35h 30m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$1,409
This Mytrip deal was found by Cheapflights users on 5/3. 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 6/18:00 am
SEA
- SLU
2 stops31h 25m
Multiple Airlines
Mon 6/812:35 pm
SLU
- SEA
3 stops35h 33m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$1,491
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated May 5, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated May 5, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/1. 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.
Sat 5/910:16 pm
SEA
- UVF
1 stop12h 29m
American Airlines
Thu 5/142:45 pm
UVF
- SEA
2 stops22h 29m
American Airlines
Deal found 5/1![American Airlines logo]()
$794
This Delta deal was found by Cheapflights users on 5/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:00 pm
SEA
- UVF
1 stop18h 05m
Delta
Thu 5/143:25 pm
UVF
- SEA
1 stop21h 40m
Delta
Deal found 5/1![Delta logo]()
$913
This Justfly.com deal was found by Cheapflights users on 5/4. 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.
Sat 5/2311:52 pm
SEA
- UVF
1 stop33h 58m
JetBlue
Sat 5/302:10 pm
UVF
- SEA
1 stop33h 46m
JetBlue
Deal found 5/4![JetBlue logo]()
$945
This Mytrip deal was found by Cheapflights users on 5/3. 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 6/18:00 am
SEA
- SLU
2 stops31h 25m
Multiple Airlines
Mon 6/812:35 pm
SLU
- SEA
3 stops35h 33m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$1,491
This Mytrip deal was found by Cheapflights users on 4/30. 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.
Sun 6/1411:59 pm
SEA
- UVF
3 stops35h 11m
Multiple Airlines
Sun 6/212:30 pm
UVF
- SEA
3 stops22h 37m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$818
This Orbitz deal was found by Cheapflights users on 5/3. 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.
Thu 6/185:45 am
SEA
- UVF
2 stops29h 35m
Multiple Airlines
Wed 6/244:32 pm
UVF
- SEA
1 stop31h 36m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$936
This Mytrip deal was found by Cheapflights users on 5/4. 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.
Thu 6/1811:59 pm
SEA
- SLU
3 stops43h 11m
Multiple Airlines
Thu 6/255:50 pm
SLU
- SEA
3 stops25h 52m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$1,368
This Mytrip deal was found by Cheapflights users on 5/3. 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.
Thu 6/1810:30 am
SEA
- SLU
3 stops29h 30m
Multiple Airlines
Wed 6/2410:15 am
SLU
- SEA
3 stops35h 30m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$1,409
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 May 5, 2026.
Search for one-way flight options from Seattle to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated May 5, 2026.
This Justfly.com deal was found by Cheapflights users on 5/4. 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.
Sat 5/2311:52 pm
SEA
- UVF
1 stop33h 58m
JetBlue
Deal found 5/4![JetBlue logo]()
$317
This Mytrip deal was found by Cheapflights users on 5/3. 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 6/153:00 pm
SEA
- UVF
3 stops20h 10m
Air Canada
Deal found 5/3![Air Canada logo]()
$325
This American Airlines deal was found by Cheapflights users on 5/1. 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 9/226:21 pm
SEA
- UVF
2 stops16h 29m
American Airlines
Deal found 5/1![American Airlines logo]()
$326
This American Airlines deal was found by Cheapflights users on 5/1. 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.
Wed 9/2311:09 pm
SEA
- UVF
1 stop11h 41m
American Airlines
Deal found 5/1![American Airlines logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 5/3. 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.
Tue 6/168:25 pm
SEA
- UVF
3 stops38h 15m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$412
This FlightHub deal was found by Cheapflights users on 5/3. 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 6/169:42 pm
SEA
- UVF
2 stops36h 58m
WestJet
Deal found 5/3![WestJet logo]()
$451
This Kiwi.com deal was found by Cheapflights users on 5/3. 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.
Mon 6/153:33 pm
SEA
- SLU
3 stops38h 57m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$519
This FlightHub deal was found by Cheapflights users on 5/3. 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 6/158:00 am
SEA
- UVF
1 stop27h 10m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$531
This Kiwi.com deal was found by Cheapflights users on 5/3. 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.
Tue 6/1611:15 pm
SEA
- SLU
3 stops40h 45m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$636
This Kiwi.com deal was found by Cheapflights users on 5/3. 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.
Fri 6/197:00 am
SEA
- SLU
3 stops36h 10m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$667
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 May 5, 2026.
Round-trip from | $633 (American Airlines) |
|---|---|
One-way from | $317 (Justfly.com) |
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 May 5, 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
Quickest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 9/23
6:21 pm-1:50 pm
2 stops16h 29m
Castries Hewanorra
Wed 9/30
4:00 pm-9:20 am
2 stops20h 20m
$638
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 8/19
5:30 pm-2:14 pm
1 stop17h 44m
Castries Hewanorra
Mon 8/24
3:34 pm-9:49 am
1 stop21h 15m
$774
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 8/17
5:30 pm-2:14 pm
1 stop17h 44m
Castries Hewanorra
Thu 8/27
3:34 pm-9:49 am
1 stop21h 15m
$789
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sun 6/14
11:59 pm-2:10 pm
3 stops35h 11m
Castries Hewanorra
Sun 6/21
2:30 pm-10:07 am
3 stops22h 37m
$818
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 8/20
5:30 pm-2:14 pm
1 stop17h 44m
Castries Hewanorra
Wed 8/26
3:34 pm-9:49 am
1 stop21h 15m
$886
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 9/23
3:55 pm-2:23 pm
1 stop19h 28m
Castries Hewanorra
Wed 9/30
3:38 pm-10:05 am
1 stop21h 27m
$897
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 6/18
5:45 am-2:20 pm
2 stops29h 35m
Castries Hewanorra
Wed 6/24
4:32 pm-9:08 pm
1 stop31h 36m
$936
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 5/23
11:52 pm-12:50 pm
1 stop33h 58m
Castries Hewanorra
Sat 5/30
2:10 pm-8:56 pm
1 stop33h 46m
$945
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 8/17
5:30 pm-2:14 pm
1 stop17h 44m
Castries Hewanorra
Sun 8/30
3:34 pm-10:05 am
1 stop21h 31m
$1,035
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Wed 9/23
10:30 am-7:00 pm
3 stops29h 30m
Castries George F. L. Charle
Wed 9/30
10:15 am-5:08 pm
3 stops33h 53m
$1,162
Showing 1-10 of 24 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 May 5, 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.
Crew
8.5
Boarding
8.1
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.9
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Boarding
8.1
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.9
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Crew
8.5
Boarding
8.1
Overall
7.9
Entertainment
7.8
Food
7.2
Comfort
7.9
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
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 May 5, 2026.
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Top 2 airlines flying from Seattle to Saint Lucia
Discover the top 2 airlines 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 May 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$264 | Average$1,210 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$752 | Average$956 | FlexibilityNo cancel fee | On-time71% |