SEA - UVF

$772 Find Cheap Flights from Seattle to Castries - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Castries departing on 7/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Castries

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Castries, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Castries, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$772
American Airlines
Tue 7/21Mon 7/27
SEA - UVF • 1 stop
Top airlines
Cheapest • from $772 (round-trip)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Castries. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $1,176 (round-trip)
Shortest trip • 12h 06m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Castries!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Castries (SEA-UVF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Castries that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Castries

Tue, Jul 21 - Mon, Jul 27
American Airlines Logo
9:35 pm - 2:20 pm
SEA
-
UVF
13h 45m
1 stop
American Airlines Logo
2:50 pm - 12:07 am
UVF
-
SEA
12h 17m
1 stop
$772American Airlines
Tue, Jul 21 - Mon, Jul 27
American Airlines Logo
8:45 pm - 2:20 pm
SEA
-
UVF
14h 35m
2 stops
American Airlines Logo
2:50 pm - 12:07 am
UVF
-
SEA
12h 17m
1 stop
$777American Airlines
Thu, Oct 1 - Wed, Oct 7
Multiple Airlines Logo
10:30 am - 2:15 pm
SEA
-
UVF
24h 45m
2 stops
Multiple Airlines Logo
4:25 pm - 9:15 pm
UVF
-
SEA
31h 50m
1 stop
$784Multiple Airlines
Tue, Aug 4 - Mon, Aug 10
JetBlue Logo
10:19 pm - 12:37 pm
SEA
-
UVF
11h 18m
1 stop
JetBlue Logo
4:17 pm - 9:08 pm
UVF
-
SEA
31h 51m
1 stop
$826JetBlue
Thu, Oct 1 - Wed, Oct 7
American Airlines Logo
5:34 pm - 1:54 pm
SEA
-
UVF
17h 20m
2 stops
American Airlines Logo
2:20 pm - 9:19 am
UVF
-
SEA
21h 59m
2 stops
$841American Airlines
Thu, Aug 6 - Mon, Aug 10
JetBlue Logo
10:13 pm - 12:39 pm
SEA
-
UVF
11h 26m
1 stop
JetBlue Logo
4:17 pm - 9:08 pm
UVF
-
SEA
31h 51m
1 stop
$850JetBlue
Tue, Aug 4 - Tue, Aug 11
JetBlue Logo
10:19 pm - 12:37 pm
SEA
-
UVF
11h 18m
1 stop
JetBlue Logo
1:59 pm - 9:08 pm
UVF
-
SEA
34h 09m
1 stop
$852JetBlue
Tue, Aug 4 - Mon, Aug 10
JetBlue Logo
10:19 pm - 12:37 pm
SEA
-
UVF
11h 18m
1 stop
JetBlue Logo
4:17 pm - 9:08 pm
UVF
-
SEA
31h 51m
1 stop
$855JetBlue
Wed, Aug 5 - Mon, Aug 10
JetBlue Logo
10:19 pm - 3:12 pm
SEA
-
UVF
13h 53m
1 stop
JetBlue Logo
4:17 pm - 9:08 pm
UVF
-
SEA
31h 51m
1 stop
$861JetBlue
Tue, Aug 4 - Wed, Aug 12
JetBlue Logo
10:19 pm - 12:37 pm
SEA
-
UVF
11h 18m
1 stop
JetBlue Logo
4:17 pm - 9:08 pm
UVF
-
SEA
31h 51m
1 stop
$882JetBlue
Booking Insights

KAYAK's insights & trends for Seattle to Castries flights

Get data-powered insights and trends into flights from Seattle to Castries to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Seattle to Castries?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Castries departing in July.

What is the cheapest month to fly from Seattle to Castries?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Castries, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Castries is February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,852 and $1,573 respectively.

Good to know

Cheapest flight$772
Most popular time to fly and prices are also 18% lower on average.
Flight from Seattle to Castries

When to book flights from Seattle to Castries

Are your dates flexible? Find out the best times to travel from Seattle to Castries based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Castries

  • What is the cheapest flight from Seattle to Castries?

    In the last 5 days, the lowest price for a flight from Seattle to Castries was $772 for a round-trip ticket.

  • Do I need a passport to fly between Seattle and Castries?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Seattle and on arrival in Castries.

  • Which aircraft models fly most regularly from Seattle to Castries?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Castries?

    oneworld is the only airline alliance operating flights between Seattle and Castries.

  • How does KAYAK find such low prices on flights from Seattle to Castries?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Castries.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Castries?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Castries from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Castries?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Castries with an airline and back to Seattle with another airline. Booking your flights between Seattle and UVF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Castries?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Castries from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Seattle to Castries

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Castries. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Castries? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
American AirlinesOverall score based on 11746 reviews
7.5Boarding
7.2Comfort
7.9Crew
6.8Entertainment
6.4Food
Airline reviews

My experience with American Airlines was great. Unfortunately my stroller was not located and has not been given to me and or reached out in return for in regard to information.

10.0 ExcellentAnonymous, Jun 2026
LGA - MIA
Read more American Airlines reviews

My experience with American Airlines was great. Unfortunately my stroller was not located and has not been given to me and or reached out in return for in regard to information.

Pilots were fantastic - super smooth. First Class flight attendant was very attentive. Main Cabin flight attendant should try to smooth the rough edges of her voice - very shrill / punitive. Hurt my ears just to listen to her. Recognize they have a (tough) job to do - but tone over speakers needs to be less like scolding a 5 year old.

Maybe focus more on delivering a good product vs selling me a damn credit card

American Airlines is a great dependable airline, on time arrival and departure with polite crew and staff.

I think since I am an AA Advantage member, my checked bags should have been free, but I paid for all 4 of us.

This flight moved Gates several times in a short time period, from B to C, which required a substantial walk or rail ride. Then the flight was delayed more than 2 hours and the food was subpar compared to other flights.

Flight was delayed multiple times without giving any particular reason and the only thing that was communicated was that 'Aircraft is getting ready'. I was stuck at SFO airport for 15 hours and finally took Southwest Airlines flight back home to Dallas.

Hydraulic leak caused the flight to be cancelled. Auto system scheduled us on a 3 am flight. Wevhsedvrebook on the app and hit schedules later in the afternoon. Our luggage per gate and ticket agent would be rescanned and put in our new flight. Did not happen. Our luggage stayed in hsv. Baggage claim in wash dc unable to help. We filed a claim. Several emails about our luggage were in conflict with one another. Called as baggage and was on hold 30 minutes. Oscar said one of 2 was out fir delivery then cancelled. About 45 minutes later both pieces were delivered. Their system is suspect

I was not clear if food was offered or not.

Because I bought my ticket from Underpricer, I could not check in online. I could only check in at the airport and that was deeply frustrating because I had to arrive very early. The flight also departed 45 min late and passengers were given no explanations about why we were delayed. I was worried I would miss my connecting flight. Once on board, however, the flight was fine.

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

Information on your arrival and departure airports