$221+ 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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
May 2 — May 91
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Saint Lucia
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Best
Last-minute
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 April 2, 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 April 2, 2026.
This Delta deal was found by Cheapflights users on 3/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/154:05 pm
SEA
- UVF
1 stop18h 57m
Delta
Tue 4/213:22 pm
UVF
- SEA
1 stop21h 38m
Delta
Deal found 3/29![Delta logo]()
$598
This FlightHub deal was found by Cheapflights users on 3/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:40 am
SEA
- UVF
2 stops30h 40m
Air Canada
Mon 4/134:05 pm
UVF
- SEA
2 stops30h 15m
Air Canada
Deal found 3/29![Air Canada logo]()
$670
This Mytrip deal was found by Cheapflights users on 4/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/218:00 am
SEA
- UVF
1 stop27h 05m
Multiple Airlines
Thu 5/282:30 pm
UVF
- SEA
3 stops22h 35m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$695
This Delta deal was found by Cheapflights users on 3/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/93:59 pm
SEA
- UVF
1 stop18h 59m
Delta
Tue 4/143:22 pm
UVF
- SEA
1 stop21h 38m
Delta
Deal found 3/29![Delta logo]()
$756
This American Airlines deal was found by Cheapflights users on 4/2. 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 5/218:45 pm
SEA
- UVF
1 stop12h 20m
American Airlines
Thu 5/281:05 pm
UVF
- SEA
1 stop14h 03m
American Airlines
Deal found 4/2![American Airlines logo]()
$774
This American Airlines deal was found by Cheapflights users on 3/29. 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.
Tue 10/611:53 pm
SEA
- UVF
1 stop10h 32m
American Airlines
Sat 10/104:20 pm
UVF
- SEA
2 stops19h 59m
American Airlines
Deal found 3/29![American Airlines logo]()
$805
This Expedia deal was found by Cheapflights users on 3/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2111:52 pm
SEA
- UVF
1 stop12h 43m
JetBlue
Sat 5/234:55 pm
UVF
- SEA
1 stop31h 01m
JetBlue
Deal found 3/29![JetBlue logo]()
$903
This Priceline deal was found by Cheapflights users on 3/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/212:55 pm
SEA
- UVF
2 stops20h 10m
Multiple Airlines
Sat 5/234:55 pm
UVF
- SEA
1 stop31h 01m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$923
This Mytrip deal was found by Cheapflights users on 3/29. 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 6/78:00 am
SEA
- SLU
2 stops31h 25m
Multiple Airlines
Sat 6/135:50 pm
SLU
- SEA
3 stops27h 55m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,056
This Mytrip deal was found by Cheapflights users on 3/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2110:30 am
SEA
- SLU
3 stops28h 55m
Multiple Airlines
Sat 6/275:50 pm
SLU
- SEA
3 stops27h 55m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$1,400
This Mytrip deal was found by Cheapflights users on 4/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/188:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Mon 7/2712:35 pm
SLU
- SEA
3 stops28h 47m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$2,144
This Mytrip deal was found by Cheapflights users on 4/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:00 am
SEA
- SLU
3 stops25h 05m
Multiple Airlines
Mon 4/2012:35 pm
SLU
- SEA
3 stops33h 48m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$2,341
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 April 2, 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 April 2, 2026.
This Delta deal was found by Cheapflights users on 3/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/154:05 pm
SEA
- UVF
1 stop18h 57m
Delta
Tue 4/213:22 pm
UVF
- SEA
1 stop21h 38m
Delta
Deal found 3/29![Delta logo]()
$598
This Mytrip deal was found by Cheapflights users on 4/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/218:00 am
SEA
- UVF
1 stop27h 05m
Multiple Airlines
Thu 5/282:30 pm
UVF
- SEA
3 stops22h 35m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$695
This American Airlines deal was found by Cheapflights users on 4/2. 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 5/218:45 pm
SEA
- UVF
1 stop12h 20m
American Airlines
Thu 5/281:05 pm
UVF
- SEA
1 stop14h 03m
American Airlines
Deal found 4/2![American Airlines logo]()
$774
This Delta deal was found by Cheapflights users on 3/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/79:35 pm
SEA
- UVF
1 stop13h 30m
Delta
Mon 5/113:25 pm
UVF
- SEA
1 stop21h 40m
Delta
Deal found 3/29![Delta logo]()
$1,005
This American Airlines deal was found by Cheapflights users on 3/31. 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 5/1410:16 pm
SEA
- UVF
1 stop12h 29m
American Airlines
Thu 5/211:05 pm
UVF
- SEA
1 stop14h 03m
American Airlines
Deal found 3/31![American Airlines logo]()
$1,023
This Mytrip deal was found by Cheapflights users on 3/29. 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 6/78:00 am
SEA
- SLU
2 stops31h 25m
Multiple Airlines
Sat 6/135:50 pm
SLU
- SEA
3 stops27h 55m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,056
This American Airlines deal was found by Cheapflights users on 3/29. 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.
Wed 4/156:19 pm
SEA
- UVF
2 stops17h 07m
American Airlines
Tue 4/212:45 pm
UVF
- SEA
2 stops22h 29m
American Airlines
Deal found 3/29![American Airlines logo]()
$1,036
This Priceline deal was found by Cheapflights users on 4/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1610:30 am
SEA
- UVF
2 stops24h 10m
Multiple Airlines
Sat 5/234:55 pm
UVF
- SEA
1 stop31h 01m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$1,115
This Delta deal was found by Cheapflights users on 4/1. 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.
Tue 5/1211:35 pm
SEA
- UVF
1 stop11h 30m
Delta
Mon 5/183:25 pm
UVF
- SEA
1 stop21h 40m
Delta
Deal found 4/1![Delta logo]()
$1,119
This Mytrip deal was found by Cheapflights users on 3/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2110:30 am
SEA
- SLU
3 stops28h 55m
Multiple Airlines
Sat 6/275:50 pm
SLU
- SEA
3 stops27h 55m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$1,400
This Mytrip deal was found by Cheapflights users on 4/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/188:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Mon 7/2712:35 pm
SLU
- SEA
3 stops28h 47m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$2,144
This Mytrip deal was found by Cheapflights users on 4/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:00 am
SEA
- SLU
3 stops25h 05m
Multiple Airlines
Mon 4/2012:35 pm
SLU
- SEA
3 stops33h 48m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$2,341
This Orbitz deal was found by Cheapflights users on 4/2. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/218:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Thu 5/283:45 pm
SLU
- SEA
2 stops56h 23m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$3,326
This Expedia deal was found by Cheapflights users on 4/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Mon 4/207:10 pm
SLU
- SEA
2 stops53h 43m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$3,952
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated April 2, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated April 2, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/93:59 pm
SEA
- UVF
1 stop18h 59m
Delta
Tue 4/143:22 pm
UVF
- SEA
1 stop21h 38m
Delta
Deal found 3/29![Delta logo]()
$756
This Mytrip deal was found by Cheapflights users on 3/29. 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.
Thu 4/98:00 am
SEA
- UVF
1 stop28h 20m
Multiple Airlines
Tue 4/142:40 pm
UVF
- SEA
2 stops26h 39m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$928
This Delta deal was found by Cheapflights users on 3/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/154:05 pm
SEA
- UVF
1 stop18h 57m
Delta
Tue 4/213:22 pm
UVF
- SEA
1 stop21h 38m
Delta
Deal found 3/29![Delta logo]()
$598
This Mytrip deal was found by Cheapflights users on 4/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:00 am
SEA
- SLU
3 stops25h 05m
Multiple Airlines
Mon 4/2012:35 pm
SLU
- SEA
3 stops33h 48m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$2,341
This Gotogate deal was found by Cheapflights users on 4/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/148:00 am
SEA
- UVF
1 stop27h 05m
Air Canada
Tue 5/193:05 pm
UVF
- SEA
1 stop33h 03m
Air Canada
Deal found 4/1![Air Canada logo]()
$936
This Expedia deal was found by Cheapflights users on 4/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:39 pm
SEA
- UVF
1 stop11h 49m
JetBlue
Sat 5/234:55 pm
UVF
- SEA
1 stop31h 01m
JetBlue
Deal found 4/1![JetBlue logo]()
$934
This Mytrip deal was found by Cheapflights users on 4/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/218:00 am
SEA
- UVF
1 stop27h 05m
Multiple Airlines
Thu 5/282:30 pm
UVF
- SEA
3 stops22h 35m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$695
This American Airlines deal was found by Cheapflights users on 4/2. 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 5/218:45 pm
SEA
- UVF
1 stop12h 20m
American Airlines
Thu 5/281:05 pm
UVF
- SEA
1 stop14h 03m
American Airlines
Deal found 4/2![American Airlines logo]()
$774
This Expedia deal was found by Cheapflights users on 3/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2111:52 pm
SEA
- UVF
1 stop12h 43m
JetBlue
Sat 5/234:55 pm
UVF
- SEA
1 stop31h 01m
JetBlue
Deal found 3/29![JetBlue logo]()
$903
This Priceline deal was found by Cheapflights users on 3/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/212:55 pm
SEA
- UVF
2 stops20h 10m
Multiple Airlines
Sat 5/234:55 pm
UVF
- SEA
1 stop31h 01m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$923
This Orbitz deal was found by Cheapflights users on 4/2. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/218:00 am
SEA
- SLU
2 stops27h 35m
Multiple Airlines
Thu 5/283:45 pm
SLU
- SEA
2 stops56h 23m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$3,326
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 April 2, 2026.
Search for one-way flight options from Seattle to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated April 2, 2026.
This Expedia deal was found by Cheapflights users on 4/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/218:00 am
SEA
- UVF
1 stop27h 05m
Air Canada
Deal found 4/1![Air Canada logo]()
$221
This Delta deal was found by Cheapflights users on 4/1. 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.
Tue 5/129:35 pm
SEA
- UVF
1 stop13h 30m
Delta
Deal found 4/1![Delta logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 4/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2111:08 pm
SEA
- UVF
3 stops59h 32m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$540
This WestJet deal was found by Cheapflights users on 4/1. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:59 pm
SEA
- UVF
2 stops38h 41m
WestJet
Deal found 4/1![WestJet logo]()
$583
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 April 2, 2026.
Round-trip from | $562 (Delta) |
|---|---|
One-way from | $221 (Expedia) |
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 April 2, 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
Wed 4/15
4:05 pm-2:02 pm
1 stop18h 57m
Castries Hewanorra
Tue 4/21
3:22 pm-10:00 am
1 stop21h 38m
$598
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 5/21
8:00 am-2:05 pm
1 stop27h 05m
Castries Hewanorra
Thu 5/28
2:30 pm-10:05 am
3 stops22h 35m
$695
Quickest round-trip
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 5/21
8:45 pm-12:05 pm
1 stop12h 20m
Castries Hewanorra
Thu 5/28
1:05 pm-12:08 am
1 stop14h 03m
$774
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 5/7
9:35 pm-2:05 pm
1 stop13h 30m
Castries Hewanorra
Mon 5/11
3:25 pm-10:05 am
1 stop21h 40m
$1,005
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 5/14
10:16 pm-1:45 pm
1 stop12h 29m
Castries Hewanorra
Thu 5/21
1:05 pm-12:08 am
1 stop14h 03m
$1,023
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 4/15
6:19 pm-2:26 pm
2 stops17h 07m
Castries Hewanorra
Tue 4/21
2:45 pm-10:14 am
2 stops22h 29m
$1,036
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sun 6/7
8:00 am-6:25 pm
2 stops31h 25m
Castries George F. L. Charle
Sat 6/13
5:50 pm-6:45 pm
3 stops27h 55m
$1,056
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 5/16
10:30 am-1:40 pm
2 stops24h 10m
Castries Hewanorra
Sat 5/23
4:55 pm-8:56 pm
1 stop31h 01m
$1,115
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Tue 5/12
11:35 pm-2:05 pm
1 stop11h 30m
Castries Hewanorra
Mon 5/18
3:25 pm-10:05 am
1 stop21h 40m
$1,119
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sun 6/21
10:30 am-6:25 pm
3 stops28h 55m
Castries George F. L. Charle
Sat 6/27
5:50 pm-6:45 pm
3 stops27h 55m
$1,400
Showing 1-10 of 18 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
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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 April 2, 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
Food
6.4
Boarding
7.5
Overall
7.1
Crew
8.0
Entertainment
6.9
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
Comfort
7.2
Food
6.4
Boarding
7.5
Overall
7.1
Crew
8.0
Entertainment
6.9
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
Related info for your journey
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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 April 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$729 | Average$882 | FlexibilityNo cancel fee | On-time71% |