$416+ 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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Nov 9 — Nov 161
Round-trip
1 adult, Economy
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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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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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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 October 10, 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 October 10, 2026.
This American Airlines deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:39 pm -
2 stops17h 22m
Sat 12/193:47 pm -
2 stops21h 48m
Deal found 10/6![American Airlines logo]()
$867
This Air Canada deal was found by Cheapflights users on 10/7. 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.
Sun 12/67:45 am -
1 stop28h 55m
Wed 12/95:35 pm -
2 stops32h 22m
Deal found 10/7![Air Canada logo]()
$902
This Justfly.com deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:40 am -
2 stops28h 00m
Mon 11/25:35 pm -
2 stops32h 22m
Deal found 10/5![Air Canada logo]()
$951
This American Airlines deal was found by Cheapflights users on 10/10. 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.
Sat 10/318:50 pm -
1 stop13h 40m
Sat 11/74:41 pm -
2 stops20h 58m
Deal found 10/10![American Airlines logo]()
$971
This American Airlines deal was found by Cheapflights users on 10/5. 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 10/299:42 pm -
1 stop13h 38m
Mon 11/24:07 pm -
1 stop23h 31m
Deal found 10/5![American Airlines logo]()
$986
This Delta deal was found by Cheapflights users on 10/10. 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 10/3110:35 pm -
1 stop13h 37m
Sat 11/74:32 pm -
1 stop21h 31m
Deal found 10/10![Delta logo]()
$1,056
This Delta deal was found by Cheapflights users on 10/8. 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 10/2911:59 pm -
1 stop11h 13m
Mon 11/24:32 pm -
1 stop21h 31m
Deal found 10/8![Delta logo]()
$1,091
This United Airlines deal was found by Cheapflights users on 10/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1911:44 pm -
2 stops34h 31m
Fri 12/253:21 pm -
2 stops34h 08m
Deal found 10/7![United Airlines logo]()
$1,267
This Mytrip deal was found by Cheapflights users on 10/6. 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.
Fri 12/112:30 pm -
3 stops44h 25m
Sat 12/193:40 pm -
2 stops26h 00m
Deal found 10/6![Multiple Airlines logo]()
$1,359
This Mytrip deal was found by Cheapflights users on 10/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:45 am -
2 stops28h 20m
Sun 11/299:10 am -
3 stops32h 30m
Deal found 10/8![Multiple Airlines logo]()
$1,711
This Expedia deal was found by Cheapflights users on 10/7. 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 12/197:45 am -
2 stops26h 45m
Fri 12/2512:35 pm -
2 stops36h 24m
Deal found 10/7![Multiple Airlines logo]()
$3,549
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 October 10, 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 October 10, 2026.
This American Airlines deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:39 pm -
2 stops17h 22m
Sat 12/193:47 pm -
2 stops21h 48m
Deal found 10/6![American Airlines logo]()
$867
This Air Canada deal was found by Cheapflights users on 10/7. 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.
Sun 12/67:45 am -
1 stop28h 55m
Wed 12/95:35 pm -
2 stops32h 22m
Deal found 10/7![Air Canada logo]()
$902
This Mytrip deal was found by Cheapflights users on 10/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:45 am -
2 stops28h 20m
Sun 11/299:10 am -
3 stops32h 30m
Deal found 10/8![Multiple Airlines logo]()
$1,711
This Justfly.com deal was found by Cheapflights users on 10/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:40 am -
2 stops28h 00m
Mon 11/25:35 pm -
2 stops32h 22m
Deal found 10/8![Air Canada logo]()
$902
This American Airlines deal was found by Cheapflights users on 10/10. 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.
Sat 10/318:50 pm -
1 stop13h 40m
Sat 11/74:41 pm -
2 stops20h 58m
Deal found 10/10![American Airlines logo]()
$971
This Expedia deal was found by Cheapflights users on 10/7. 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 12/197:45 am -
3 stops52h 20m
Fri 12/2512:35 pm -
2 stops36h 24m
Deal found 10/7![Multiple Airlines logo]()
$3,549
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated October 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated October 10, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 10/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:40 am -
2 stops28h 00m
Mon 11/25:35 pm -
2 stops32h 22m
Deal found 10/8![Air Canada logo]()
$902
This American Airlines deal was found by Cheapflights users on 10/5. 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 10/299:42 pm -
1 stop13h 38m
Mon 11/24:07 pm -
1 stop23h 31m
Deal found 10/5![American Airlines logo]()
$986
This Delta deal was found by Cheapflights users on 10/8. 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 10/2911:59 pm -
1 stop11h 13m
Mon 11/24:32 pm -
1 stop21h 31m
Deal found 10/8![Delta logo]()
$1,091
This American Airlines deal was found by Cheapflights users on 10/10. 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.
Sat 10/318:50 pm -
1 stop13h 40m
Sat 11/74:41 pm -
2 stops20h 58m
Deal found 10/10![American Airlines logo]()
$971
This Delta deal was found by Cheapflights users on 10/10. 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 10/3110:35 pm -
1 stop13h 37m
Sat 11/74:32 pm -
1 stop21h 31m
Deal found 10/10![Delta logo]()
$1,056
This Mytrip deal was found by Cheapflights users on 10/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:45 am -
2 stops28h 20m
Sun 11/299:10 am -
3 stops32h 30m
Deal found 10/8![Multiple Airlines logo]()
$1,711
This WestJet deal was found by Cheapflights users on 10/8. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/222:30 pm -
2 stops44h 25m
Sun 11/293:55 pm -
2 stops49h 45m
Deal found 10/8![WestJet logo]()
$1,750
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 October 10, 2026.
Search for one-way flight options from Seattle to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated October 10, 2026.
This Travelocity deal was found by Cheapflights users on 10/8. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/317:05 pm -
2 stops17h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Air Canada logo]()
$416
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/316:33 pm -
3 stops40h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$498
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 October 10, 2026.
Round-trip from | $867 (American Airlines) |
|---|---|
One-way from | $416 (Travelocity) |
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 7,457,451 searches. Data last updated October 10, 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 Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sun 1/31
7:05 pm-4:40 pm
2 stops17h 35m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$416
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sun 1/31
6:33 pm-2:55 pm
3 stops40h 22m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$498
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Fri 12/11
5:39 pm-3:01 pm
2 stops17h 22m
Castries Hewanorra
Sat 12/19
3:47 pm-9:35 am
2 stops21h 48m
$867
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sun 12/6
7:45 am-4:40 pm
1 stop28h 55m
Castries Hewanorra
Wed 12/9
5:35 pm-9:57 pm
2 stops32h 22m
$902
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Thu 10/29
8:40 am-3:40 pm
2 stops28h 00m
Castries Hewanorra
Mon 11/2
5:35 pm-9:57 pm
2 stops32h 22m
$902
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sat 10/31
8:50 pm-1:30 pm
1 stop13h 40m
Castries Hewanorra
Sat 11/7
4:41 pm-9:39 am
2 stops20h 58m
$971
SeattleCastries
SEA Seattle/Tacoma Intl - SLU Castries George F. L. Charle
SEASLU
Seattle/Tacoma Intl
Sun 11/22
7:45 am-4:05 pm
2 stops28h 20m
Castries George F. L. Charle
Sun 11/29
9:10 am-1:40 pm
3 stops32h 30m
$1,711
SeattleCastries
SEA Seattle/Tacoma Intl - SLU Castries George F. L. Charle
SEASLU
Seattle/Tacoma Intl
Sat 12/19
7:45 am-4:05 pm
3 stops52h 20m
Castries George F. L. Charle
Fri 12/25
12:35 pm-8:59 pm
2 stops36h 24m
$3,549
Sorted 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 October 10, 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.
Crew
7.9
Food
6.4
Comfort
7.2
Overall
7.0
Boarding
7.4
Entertainment
6.8
Reviews
1 / 20
10.0
ExcellentLinda,Jul 2026
ROA - CLT
Crew
7.9
Food
6.4
Comfort
7.2
Overall
7.0
Boarding
7.4
Entertainment
6.8
Reviews
1 / 20
10.0
ExcellentLinda,Jul 2026
ROA - CLT
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.
Search flights from Seattle to Saint Lucia by cabin class
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 October 10, 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 7,457,451 searches. Data last updated October 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$752 | Average$956 | FlexibilityNo cancel fee | On-time71% |