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Castries

$525+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UVF
ago. 10 — ago. 171
dom. 8/10
dom. 8/17
1 adult, Economy
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Cheap 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 agosto 5, 2025.

Round-trip from

$525
(American Airlines)

Popular in

June

Cheapest in

September

Average price

$729
From Seattle/Tacoma Intl to Castries Hewanorra
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Highest demand for flights based on searches. 22% potential increase in price ($277 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($67 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 agosto 5, 2025.

This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/299:45 pmSEA - UVF
1 stop13h 30mDelta
jue. 9/43:35 pmUVF - SEA
1 stop21h 52mDelta
Deal found 8/5$525
This American Airlines deal was found by Cheapflights users on 8/5. 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.
jue. 11/1310:08 pmSEA - UVF
1 stop11h 13mAmerican Airlines
lun. 11/174:50 pmUVF - SEA
2 stops22h 50mAmerican Airlines
Deal found 8/5$530
This American Airlines deal was found by Cheapflights users on 8/5. 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.
lun. 12/110:08 pmSEA - UVF
1 stop11h 13mAmerican Airlines
mié. 12/103:05 pmUVF - SEA
1 stop12h 17mAmerican Airlines
Deal found 8/5$634
This American Airlines deal was found by Cheapflights users on 8/5. 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.
vie. 8/295:20 pmSEA - UVF
2 stops17h 35mAmerican Airlines
jue. 9/43:17 pmUVF - SEA
2 stops21h 04mAmerican Airlines
Deal found 8/5$640
This American Airlines deal was found by Cheapflights users on 8/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/28:08 pmSEA - UVF
1 stop15h 09mAmerican Airlines
mar. 9/93:17 pmUVF - SEA
2 stops21h 02mAmerican Airlines
Deal found 8/4$658
This Mytrip deal was found by Cheapflights users on 8/5. 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.
vie. 9/191:15 pmSEA - UVF
3 stops45h 29mMultiple Airlines
vie. 9/263:10 pmUVF - SEA
1 stop22h 49mMultiple Airlines
Deal found 8/5$715
This American Airlines deal was found by Cheapflights users on 8/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/308:51 pmSEA - UVF
1 stop14h 26mAmerican Airlines
vie. 10/312:56 pmUVF - SEA
2 stops21h 52mAmerican Airlines
Deal found 8/4$761

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 agosto 5, 2025.
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

dom. 1/18

1:56 pm-2:25 pm

1 stop20h 29m

Castries Hewanorra

jue. 1/29

5:10 pm-11:56 am

1 stop22h 46m

$525

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

lun. 12/1

10:08 pm-1:21 pm

1 stop11h 13m

Castries Hewanorra

mié. 12/10

3:05 pm-11:22 pm

1 stop12h 17m

$634

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

vie. 8/29

5:20 pm-1:55 pm

2 stops17h 35m

Castries Hewanorra

jue. 9/4

3:17 pm-9:21 am

2 stops21h 04m

$640

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

mar. 9/2

8:08 pm-2:17 pm

1 stop15h 09m

Castries Hewanorra

mar. 9/9

3:17 pm-9:19 am

2 stops21h 02m

$658

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

vie. 9/19

1:15 pm-1:44 pm

3 stops45h 29m

Castries Hewanorra

vie. 9/26

3:10 pm-10:59 am

1 stop22h 49m

$715

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

mar. 9/30

8:51 pm-2:17 pm

1 stop14h 26m

Castries Hewanorra

vie. 10/31

2:56 pm-9:48 am

2 stops21h 52m

$761

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/5

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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Castries

What is the cheapest month to book a flight from Seattle to Castries?

Currently, January is the cheapest month in which you can book a flight from Seattle to Castries (average of $556). Flying from Seattle to Castries in December is currently the most expensive (average of $730). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to UVF?

Find hourly flight availability from Seattle to Castries. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 5, 2025.

It’s typically best to fly out from Seattle to Castries at noon. Doing so could potentially save you 28% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 agosto 5, 2025.
See what other customers who have flown with Delta and 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.
Delta
8.0
Very good
7,985 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,985 reviews
Delta
8.0
Very good
7,985 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,985 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    American Airlines, at $525, was found to be the cheapest airline from Seattle to Castries.. Users have found that American Airlines is 43% 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.

  • What is the cheapest month to book a flight from Seattle to Castries?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Castries (average of $556). Flying from Seattle to Castries in December is currently the most expensive (average of $730). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 agosto 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$613Average$837FlexibilityNo cancel feeOn-time71%

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