$578+ 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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Mar 24 — Mar 311
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
Last-minute
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 February 22, 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 February 22, 2026.
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/163:55 pm
SEA
- UVF
1 stop19h 15m
Delta
Thu 11/194:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 2/20![Delta logo]()
$578
This Booking.com deal was found by Cheapflights users on 2/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:00 am
SEA
- UVF
1 stop28h 25m
Air Canada
Wed 4/154:20 pm
UVF
- SEA
1 stop32h 33m
Air Canada
Deal found 2/21![Air Canada logo]()
$607
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/163:55 pm
SEA
- UVF
1 stop19h 15m
Delta
Mon 11/234:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 2/20![Delta logo]()
$631
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Mon 4/206:19 pm
SEA
- UVF
2 stops16h 54m
American Airlines
Wed 4/222:45 pm
UVF
- SEA
2 stops23h 03m
American Airlines
Deal found 2/21![American Airlines logo]()
$651
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:55 pm
SEA
- UVF
1 stop19h 15m
Delta
Thu 11/194:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 2/20![Delta logo]()
$667
This Delta deal was found by Cheapflights users on 2/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:55 pm
SEA
- UVF
1 stop19h 15m
Delta
Wed 11/254:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 2/22![Delta logo]()
$668
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/163:55 pm
SEA
- UVF
1 stop19h 15m
Delta
Fri 11/204:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 2/20![Delta logo]()
$693
This Booking.com deal was found by Cheapflights users on 2/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/288:00 pm
SEA
- UVF
2 stops40h 25m
Air Canada
Sun 4/54:20 pm
UVF
- SEA
1 stop32h 33m
Air Canada
Deal found 2/20![Air Canada logo]()
$713
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:55 pm
SEA
- UVF
1 stop19h 15m
Delta
Mon 11/234:25 pm
UVF
- SEA
1 stop22h 01m
Delta
Deal found 2/20![Delta logo]()
$720
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:00 pm
SEA
- UVF
2 stops40h 20m
Air Canada
Mon 4/134:05 pm
UVF
- SEA
1 stop32h 48m
Air Canada
Deal found 2/20![Air Canada logo]()
$721
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Thu 10/111:09 pm
SEA
- UVF
1 stop11h 41m
American Airlines
Thu 10/82:20 pm
UVF
- SEA
1 stop12h 05m
American Airlines
Deal found 2/21![American Airlines logo]()
$753
This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/147:05 am
SEA
- SLU
2 stops28h 45m
Multiple Airlines
Tue 3/247:10 pm
SLU
- SEA
3 stops29h 58m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$830
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 February 22, 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 February 22, 2026.
This Booking.com deal was found by Cheapflights users on 2/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:00 pm
SEA
- UVF
2 stops16h 25m
Air Canada
Wed 4/154:20 pm
UVF
- SEA
2 stops25h 45m
Air Canada
Deal found 2/21![Air Canada logo]()
$607
This Mytrip deal was found by Cheapflights users on 2/21. 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.
Mon 4/203:10 pm
SEA
- UVF
3 stops19h 36m
Multiple Airlines
Wed 4/224:20 pm
UVF
- SEA
2 stops25h 45m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$757
This American Airlines deal was found by Cheapflights users on 2/19. 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 3/1410:16 pm
SEA
- UVF
1 stop13h 42m
American Airlines
Tue 3/243:58 pm
UVF
- SEA
2 stops21h 53m
American Airlines
Deal found 2/19![American Airlines logo]()
$782
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/610:35 pm
SEA
- UVF
1 stop12h 38m
Delta
Mon 8/103:28 pm
UVF
- SEA
1 stop21h 37m
Delta
Deal found 2/20![Delta logo]()
$920
This Orbitz deal was found by Cheapflights users on 2/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/288:00 am
SEA
- UVF
1 stop28h 20m
Air Canada
Sun 4/54:20 pm
UVF
- SEA
1 stop32h 33m
Air Canada
Deal found 2/20![Air Canada logo]()
$783
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Mon 4/2010:16 pm
SEA
- UVF
1 stop12h 29m
American Airlines
Wed 4/223:28 pm
UVF
- SEA
1 stop24h 05m
American Airlines
Deal found 2/21![American Airlines logo]()
$810
This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/147:05 am
SEA
- SLU
2 stops28h 45m
Multiple Airlines
Tue 3/247:10 pm
SLU
- SEA
3 stops29h 58m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$830
This Expedia deal was found by Cheapflights users on 2/21. 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.
Fri 4/33:40 pm
SEA
- UVF
2 stops44h 40m
Air Canada
Thu 4/94:15 pm
UVF
- SEA
1 stop32h 38m
Air Canada
Deal found 2/21![Air Canada logo]()
$873
This Delta deal was found by Cheapflights users on 2/19. 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 3/1411:30 pm
SEA
- UVF
1 stop11h 28m
Delta
Tue 3/243:18 pm
UVF
- SEA
1 stop21h 43m
Delta
Deal found 2/19![Delta logo]()
$968
This Mytrip deal was found by Cheapflights users on 2/19. 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 3/228:00 pm
SEA
- UVF
3 stops38h 46m
Multiple Airlines
Mon 3/304:20 pm
UVF
- SEA
1 stop32h 33m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$963
This Trip.com deal was found by Cheapflights users on 2/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1410:53 pm
SEA
- SLU
2 stops35h 17m
Multiple Airlines
Thu 4/235:50 pm
SLU
- SEA
2 stops28h 57m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$987
This Mytrip deal was found by Cheapflights users on 2/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:00 am
SEA
- SLU
3 stops32h 00m
Multiple Airlines
Wed 4/153:45 pm
SLU
- SEA
3 stops31h 55m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$2,740
This Orbitz deal was found by Cheapflights users on 2/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:00 am
SEA
- SLU
2 stops22h 30m
Multiple Airlines
Tue 4/217:10 pm
SLU
- SEA
2 stops53h 43m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$3,838
This Expedia deal was found by Cheapflights users on 2/21. 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.
Mon 4/208:00 am
SEA
- SLU
2 stops28h 35m
Multiple Airlines
Wed 4/2210:15 am
SLU
- SEA
3 stops38h 38m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$3,838
This Expedia deal was found by Cheapflights users on 2/21. 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.
Fri 4/38:00 am
SEA
- SLU
2 stops35h 10m
Multiple Airlines
Thu 4/95:50 pm
SLU
- SEA
2 stops55h 03m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$4,183
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated February 22, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated February 22, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 2/19. 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 3/1410:16 pm
SEA
- UVF
1 stop13h 42m
American Airlines
Tue 3/243:58 pm
UVF
- SEA
2 stops21h 53m
American Airlines
Deal found 2/19![American Airlines logo]()
$782
This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/147:05 am
SEA
- SLU
2 stops28h 45m
Multiple Airlines
Tue 3/247:10 pm
SLU
- SEA
3 stops29h 58m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$830
This Travelocity deal was found by Cheapflights users on 2/21. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/198:00 am
SEA
- UVF
1 stop28h 25m
Air Canada
Mon 3/304:20 pm
UVF
- SEA
1 stop32h 33m
Air Canada
Deal found 2/21![Air Canada logo]()
$859
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Thu 3/191:44 pm
SEA
- UVF
1 stop21h 34m
American Airlines
Mon 3/303:58 pm
UVF
- SEA
2 stops22h 29m
American Airlines
Deal found 2/21![American Airlines logo]()
$930
This Expedia deal was found by Cheapflights users on 2/19. 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.
Sun 3/228:00 am
SEA
- UVF
1 stop28h 25m
Air Canada
Mon 3/304:20 pm
UVF
- SEA
1 stop32h 33m
Air Canada
Deal found 2/19![Air Canada logo]()
$796
This FlightHub deal was found by Cheapflights users on 2/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/228:00 am
SEA
- UVF
1 stop28h 25m
Air Canada
Thu 3/264:15 pm
UVF
- SEA
1 stop33h 01m
Air Canada
Deal found 2/20![Air Canada logo]()
$913
This Mytrip deal was found by Cheapflights users on 2/19. 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 3/228:00 pm
SEA
- UVF
3 stops38h 46m
Multiple Airlines
Mon 3/304:20 pm
UVF
- SEA
1 stop32h 33m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$963
This Booking.com deal was found by Cheapflights users on 2/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/288:00 pm
SEA
- UVF
2 stops40h 25m
Air Canada
Sun 4/54:20 pm
UVF
- SEA
1 stop32h 33m
Air Canada
Deal found 2/20![Air Canada logo]()
$713
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/288:00 pm
SEA
- UVF
2 stops40h 25m
Multiple Airlines
Sun 4/52:40 pm
UVF
- SEA
3 stops31h 40m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$964
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 February 22, 2026.
Round-trip from | $607 (Booking.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 February 22, 2026.
Use the filters below to find and compare flights from Seattle to Saint Lucia that are best for you.
Fly from
Seattle
Fly to
Saint Lucia
Route
Depart
Return
Price
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Wed 4/8
8:00 pm-3:25 pm
2 stops16h 25m
Castries Hewanorra
Wed 4/15
4:20 pm-3:05 pm
2 stops25h 45m
$607
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 4/20
3:10 pm-1:46 pm
3 stops19h 36m
Castries Hewanorra
Wed 4/22
4:20 pm-3:05 pm
2 stops25h 45m
$757
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 3/14
10:16 pm-2:58 pm
1 stop13h 42m
Castries Hewanorra
Tue 3/24
3:58 pm-10:51 am
2 stops21h 53m
$782
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 3/28
8:00 am-3:20 pm
1 stop28h 20m
Castries Hewanorra
Sun 4/5
4:20 pm-9:53 pm
1 stop32h 33m
$783
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Mon 4/20
10:16 pm-1:45 pm
1 stop12h 29m
Castries Hewanorra
Wed 4/22
3:28 pm-12:33 pm
1 stop24h 05m
$810
SeattleCastries
SEA - SLU
SEASLU
Seattle/Tacoma Intl
Sat 3/14
7:05 am-2:50 pm
2 stops28h 45m
Castries George F. L. Charle
Tue 3/24
7:10 pm-10:08 pm
3 stops29h 58m
$830
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Fri 4/3
3:40 pm-3:20 pm
2 stops44h 40m
Castries Hewanorra
Thu 4/9
4:15 pm-9:53 pm
1 stop32h 38m
$873
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Thu 8/6
10:35 pm-2:13 pm
1 stop12h 38m
Castries Hewanorra
Mon 8/10
3:28 pm-10:05 am
1 stop21h 37m
$920
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sun 3/22
8:00 pm-1:46 pm
3 stops38h 46m
Castries Hewanorra
Mon 3/30
4:20 pm-9:53 pm
1 stop32h 33m
$963
SeattleCastries
SEA - UVF
SEAUVF
Seattle/Tacoma Intl
Sat 3/14
11:30 pm-1:58 pm
1 stop11h 28m
Castries Hewanorra
Tue 3/24
3:18 pm-10:01 am
1 stop21h 43m
$968
Showing 1-10 of 15 results
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 February 22, 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
Overall
7.2
Boarding
7.5
Food
6.4
Crew
8.0
Entertainment
6.9
Reviews
1 / 20
2.0
MediocreSusie,Jan 2026
CLT - TPA
Comfort
7.2
Overall
7.2
Boarding
7.5
Food
6.4
Crew
8.0
Entertainment
6.9
Reviews
1 / 20
2.0
MediocreSusie,Jan 2026
CLT - TPA
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 February 22, 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 February 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$725 | Average$867 | FlexibilityNo cancel fee | On-time71% |