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Castries

$512+ Cheap flights from Seattle (SEA) to Castries (UVF)

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
Mar 4 — Mar 111
Wed 3/4
Wed 3/11
1 adult, Economy
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Cheap flight deals from Seattle to Castries

Cheapest flights from Seattle to Castries
Explore the most affordable flight options available from Seattle to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 2, 2026.

This American Airlines deal was found by Cheapflights users on 1/31. 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.
Mon 3/210:16 pm
SEA
-
UVF
1 stop13h 42m
American Airlines
Mon 3/93:18 pm
UVF
-
SEA
1 stop23h 09m
American Airlines
Deal found 1/31$512
This Booking.com deal was found by Cheapflights users on 2/2. 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 Booking.com 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
Thu 3/264:15 pm
UVF
-
SEA
1 stop33h 01m
Air Canada
Deal found 2/2$613
This Delta deal was found by Cheapflights users on 1/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:55 pm
SEA
-
UVF
1 stop19h 13m
Delta
Wed 9/23:28 pm
UVF
-
SEA
1 stop21h 37m
Delta
Deal found 1/31$614
This Mytrip deal was found by Cheapflights users on 2/1. 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 3/188:00 am
SEA
-
UVF
1 stop28h 25m
Air Canada
Wed 3/254:20 pm
UVF
-
SEA
1 stop32h 56m
Air Canada
Deal found 2/1$631
This FlightHub deal was found by Cheapflights users on 1/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/108:00 pm
SEA
-
UVF
2 stops16h 25m
Air Canada
Mon 3/164:15 pm
UVF
-
SEA
2 stops25h 46m
Air Canada
Deal found 1/30$643
This American Airlines deal was found by Cheapflights users on 2/1. 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.
Thu 12/310:08 pm
SEA
-
UVF
1 stop11h 11m
American Airlines
Mon 12/74:05 pm
UVF
-
SEA
2 stops21h 37m
American Airlines
Deal found 2/1$664
This Air Canada deal was found by Cheapflights users on 1/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/103:40 pm
SEA
-
UVF
2 stops20h 45m
Air Canada
Thu 3/194:15 pm
UVF
-
SEA
2 stops44h 16m
Air Canada
Deal found 1/31$668
This American Airlines deal was found by Cheapflights users on 1/31. 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.
Fri 8/288:08 pm
SEA
-
UVF
2 stops15h 07m
American Airlines
Wed 9/23:15 pm
UVF
-
SEA
2 stops21h 06m
American Airlines
Deal found 1/31$790

Find flight deals from Seattle to Castries

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Castries (UVF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$512
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$624
Provider with most accurate pricing for Seattle/Tacoma Intl-Castries Hewanorra flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Castries Hewanorra flights.
Search Deals
From Seattle/Tacoma Intl to Castries Hewanorra
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($154 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($87 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Castries 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 2, 2026.
Use the filters below to find and compare flights from Seattle to Castries that are best for you.

Fly from

Seattle

Fly to

Castries

Route

Depart

Return

Price

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 3/2

10:16 pm-3:58 pm

1 stop13h 42m

Castries Hewanorra

Mon 3/9

3:18 pm-11:27 am

1 stop23h 09m

$512

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Thu 3/19

8:00 am-3:25 pm

1 stop28h 25m

Castries Hewanorra

Thu 3/26

4:15 pm-10:16 pm

1 stop33h 01m

$613

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 3/18

8:00 am-3:25 pm

1 stop28h 25m

Castries Hewanorra

Wed 3/25

4:20 pm-10:16 pm

1 stop32h 56m

$631

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 3/10

8:00 am-3:25 pm

1 stop28h 25m

Castries Hewanorra

Mon 3/16

4:15 pm-7:16 pm

2 stops30h 01m

$643

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 3/10

8:00 am-3:25 pm

1 stop28h 25m

Castries Hewanorra

Thu 3/19

4:15 pm-9:31 am

2 stops44h 16m

$668

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Fri 2/13

5:00 am-4:25 pm

2 stops31h 25m

$560

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 2/14

11:08 pm-2:46 pm

3 stops59h 38m

$619

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 2/14

8:00 pm-4:25 pm

2 stops40h 25m

$734

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 2/14

1:44 pm-3:18 pm

1 stop21h 34m

$802

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Fri 2/13

4:05 pm-3:05 pm

1 stop19h 00m

$814

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/31

Showing 1-10 of 12 results
1
2

Compare providers for flights from Seattle to Castries

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Castries in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Castries flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Castries flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Castries flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Castries flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Castries flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from Seattle with our price prediction graph.
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.

Reviews of airlines servicing Castries

Get insights into the airlines that provide service to Castries. 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 Castries. Reviews last updated February 2, 2026.
See what other customers who have flown with American Airlines from Seattle to Castries have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,212 reviews

Comfort

7.2

Overall

7.2

Boarding

7.5

Crew

8.0

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,212 reviews
American Airlines
7.2
Good
11,212 reviews

Comfort

7.2

Overall

7.2

Boarding

7.5

Crew

8.0

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Castries. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Castries?

    Airlines like American Airlines and Air Canada fly from Seattle to Castries in about 13h 42m. The time it takes to get you to your destination can typically vary by up to 14h 43m. The distance between Seattle and Castries is about 4189 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Seattle to Castries round-trip?

    American Airlines, at $668, was found to be the cheapest airline from Seattle to Castries.. Users have found that American Airlines is 31% cheaper than the other options available to this destination.

  • Can I find deals for flights from Seattle to Castries that include hotel bookings?

    Yes. In addition to deals on Seattle to Castries flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Castries?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Castries.

  • Can I find deals for business class flights from Seattle to Castries?

    Yes. Cheapflights offers flight deals from Seattle to Castries by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Seattle to Castries

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Castries flights

Top airline flying from Seattle to Castries

Discover the top airline that operate flights from Seattle to Castries. 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 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$668Average$840FlexibilityNo cancel feeOn-time71%

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