$358+ 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Dec 9 — Dec 161
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 November 9, 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 November 9, 2026.
This Air Canada deal was found by Cheapflights users on 11/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/63:15 pm -
2 stops21h 25m
Thu 12/105:35 pm -
2 stops28h 47m
Deal found 11/4![Air Canada logo]()
$799
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Sat 12/59:14 pm -
1 stop14h 25m
Sat 12/124:12 pm -
2 stops21h 22m
Deal found 11/5![American Airlines logo]()
$891
This American Airlines deal was found by Cheapflights users on 11/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/221:02 pm -
1 stop19h 56m
Tue 12/294:15 pm -
1 stop21h 51m
Deal found 11/7![American Airlines logo]()
$1,016
This Mytrip deal was found by Cheapflights users on 11/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/23:15 pm -
2 stops21h 25m
Sat 12/53:40 pm -
2 stops34h 17m
Deal found 11/5![Multiple Airlines logo]()
$1,021
This Mytrip deal was found by Cheapflights users on 11/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:58 pm -
3 stops43h 42m
Sat 12/123:40 pm -
2 stops26h 00m
Deal found 11/5![Multiple Airlines logo]()
$1,045
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Wed 12/29:14 pm -
1 stop12h 18m
Sat 12/52:32 pm -
1 stop14h 27m
Deal found 11/5![American Airlines logo]()
$1,076
This Delta deal was found by Cheapflights users on 11/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2811:06 pm -
1 stop12h 30m
Wed 1/64:31 pm -
1 stop21h 34m
Deal found 11/7![Delta logo]()
$1,109
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 November 9, 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 November 9, 2026.
This Air Canada deal was found by Cheapflights users on 11/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/63:15 pm -
2 stops21h 25m
Thu 12/105:35 pm -
2 stops28h 47m
Deal found 11/4![Air Canada logo]()
$799
This American Airlines deal was found by Cheapflights users on 11/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/215:50 pm -
2 stops16h 56m
Thu 1/284:38 pm -
2 stops22h 52m
Deal found 11/7![American Airlines logo]()
$891
This Mytrip deal was found by Cheapflights users on 11/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/23:15 pm -
2 stops21h 25m
Sat 12/53:40 pm -
2 stops34h 17m
Deal found 11/5![Multiple Airlines logo]()
$1,021
This Delta deal was found by Cheapflights users on 11/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2811:06 pm -
1 stop12h 30m
Wed 1/64:31 pm -
1 stop21h 34m
Deal found 11/7![Delta logo]()
$1,109
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Sat 12/59:14 pm -
1 stop12h 18m
Sat 12/124:12 pm -
1 stop22h 02m
Deal found 11/5![American Airlines logo]()
$936
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Wed 12/25:47 pm -
2 stops17h 52m
Sat 12/54:12 pm -
1 stop22h 02m
Deal found 11/5![American Airlines logo]()
$1,080
This Delta deal was found by Cheapflights users on 11/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2511:06 pm -
1 stop10h 36m
Wed 1/64:31 pm -
1 stop21h 34m
Deal found 11/7![Delta logo]()
$1,251
Last-minute flights from Seattle to Saint LuciaDiscover last-minute flight deals from Seattle to Saint Lucia. Data last updated November 9, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Saint Lucia. Data last updated November 9, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 11/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/23:15 pm -
2 stops21h 25m
Sat 12/53:40 pm -
2 stops34h 17m
Deal found 11/5![Multiple Airlines logo]()
$1,021
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Wed 12/29:14 pm -
1 stop12h 18m
Sat 12/52:32 pm -
1 stop14h 27m
Deal found 11/5![American Airlines logo]()
$1,076
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Sat 12/59:14 pm -
1 stop14h 25m
Sat 12/124:12 pm -
2 stops21h 22m
Deal found 11/5![American Airlines logo]()
$891
This Mytrip deal was found by Cheapflights users on 11/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:58 pm -
3 stops43h 42m
Sat 12/123:40 pm -
2 stops26h 00m
Deal found 11/5![Multiple Airlines logo]()
$1,045
This Air Canada deal was found by Cheapflights users on 11/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/63:15 pm -
2 stops21h 25m
Thu 12/105:35 pm -
2 stops28h 47m
Deal found 11/4![Air Canada logo]()
$799
This American Airlines deal was found by Cheapflights users on 11/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/221:02 pm -
1 stop19h 56m
Tue 12/294:15 pm -
1 stop21h 51m
Deal found 11/7![American Airlines logo]()
$1,016
This Delta deal was found by Cheapflights users on 11/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2811:06 pm -
1 stop12h 30m
Wed 1/64:31 pm -
1 stop21h 34m
Deal found 11/7![Delta logo]()
$1,109
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 November 9, 2026.
Search for one-way flight options from Seattle to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.
This Expedia deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/123:15 pm -
2 stops21h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Air Canada logo]()
$358
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Sat 12/122:20 pm -
3 stops20h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![WestJet logo]()
$673
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 November 9, 2026.
Round-trip from | $799 (Air Canada) |
|---|---|
One-way from | $358 (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 7,457,451 searches. Data last updated November 9, 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 Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sat 12/12
3:15 pm-4:40 pm
2 stops21h 25m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$358
Quickest round-trip
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sat 12/12
2:20 pm-2:55 pm
3 stops20h 35m
Castries Hewanorra
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$673
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sun 12/6
3:15 pm-4:40 pm
2 stops21h 25m
Castries Hewanorra
Thu 12/10
5:35 pm-6:22 pm
2 stops28h 47m
$799
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Thu 1/21
5:50 pm-2:46 pm
2 stops16h 56m
Castries Hewanorra
Thu 1/28
4:38 pm-11:30 am
2 stops22h 52m
$891
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Sat 12/5
9:14 pm-1:32 pm
1 stop12h 18m
Castries Hewanorra
Sat 12/12
4:12 pm-10:14 am
1 stop22h 02m
$936
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Wed 12/2
3:15 pm-4:40 pm
2 stops21h 25m
Castries Hewanorra
Sat 12/5
3:40 pm-9:57 pm
2 stops34h 17m
$1,021
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Wed 12/2
5:47 pm-3:39 pm
2 stops17h 52m
Castries Hewanorra
Sat 12/5
4:12 pm-10:14 am
1 stop22h 02m
$1,080
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Mon 12/28
11:06 pm-3:36 pm
1 stop12h 30m
Castries Hewanorra
Wed 1/6
4:31 pm-10:05 am
1 stop21h 34m
$1,109
SeattleCastries
SEA Seattle/Tacoma Intl - UVF Castries Hewanorra
SEAUVF
Seattle/Tacoma Intl
Fri 12/25
11:06 pm-1:42 pm
1 stop10h 36m
Castries Hewanorra
Wed 1/6
4:31 pm-10:05 am
1 stop21h 34m
$1,251
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
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
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 November 9, 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.
Overall
7.0
Boarding
7.4
Comfort
7.2
Entertainment
6.8
Food
6.4
Crew
7.9
Reviews
1 / 20
10.0
ExcellentLinda,Jul 2026
ROA - CLT
Overall
7.0
Boarding
7.4
Comfort
7.2
Entertainment
6.8
Food
6.4
Crew
7.9
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 November 9, 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 November 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$752 | Average$921 | FlexibilityNo cancel fee | On-time71% |