SEA - UVF

$195 Find Cheap Flights from Seattle to Castries

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Castries departing on 2/28. 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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41 299 237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$491
Overall average: $628
Delta
Sun 1/18Thu 1/29
SEA - UVF • 1 stop
Cheapest one-way
$195
American Airlines
Sat 2/28
SEA - UVF • 1 stop
When to travel
September
Cheapest • 40% price drop
August
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

Sun, Jan 18 - Thu, Jan 29
Delta Logo
4:05 pm - 3:05 pm
SEA
-
UVF
19h 00m1 stop
Delta Logo
4:25 pm - 10:07 am
UVF
-
SEA
21h 42m1 stop
$491Delta
Sun, Jan 18 - Thu, Jan 29
American Airlines Logo
11:11 pm - 4:02 pm
SEA
-
UVF
12h 51m1 stop
American Airlines Logo
4:06 pm - 11:01 am
UVF
-
SEA
22h 55m2 stops
$496American Airlines
Tue, Jan 27 - Mon, Feb 2
Air Canada Logo
5:50 am - 4:20 pm
SEA
-
UVF
30h 30m2 stops
Air Canada Logo
5:15 pm - 10:16 pm
UVF
-
SEA
33h 01m1 stop
$609Air Canada
Fri, Feb 6 - Sat, Feb 14
American Airlines Logo
11:11 pm - 4:02 pm
SEA
-
UVF
12h 51m1 stop
American Airlines Logo
5:00 pm - 11:00 am
UVF
-
SEA
22h 00m2 stops
$647American Airlines
Thu, Mar 5 - Wed, Mar 18
Delta Logo
4:05 pm - 3:05 pm
SEA
-
UVF
19h 00m1 stop
Delta Logo
3:24 pm - 10:01 am
UVF
-
SEA
21h 37m1 stop
$648Delta
Wed, Feb 11 - Wed, Feb 18
Air Canada Logo
8:10 am - 4:25 pm
SEA
-
UVF
28h 15m1 stop
Air Canada Logo
5:15 pm - 10:16 pm
UVF
-
SEA
33h 01m1 stop
$661Air Canada
Tue, Jan 13 - Tue, Jan 20
American Airlines Logo
9:45 pm - 3:03 pm
SEA
-
UVF
13h 18m1 stop
American Airlines Logo
4:06 pm - 9:37 am
UVF
-
SEA
21h 31m2 stops
$672American Airlines
Thu, Mar 5 - Wed, Mar 18
American Airlines Logo
7:24 pm - 2:50 pm
SEA
-
UVF
15h 26m2 stops
American Airlines Logo
3:58 pm - 10:48 am
UVF
-
SEA
21h 50m2 stops
$702American Airlines
Mon, Feb 23 - Sun, Mar 1
American Airlines Logo
7:24 pm - 4:00 pm
SEA
-
UVF
16h 36m2 stops
American Airlines Logo
5:00 pm - 11:00 am
UVF
-
SEA
22h 00m2 stops
$707American Airlines
Wed, Feb 11 - Wed, Feb 18
Air Canada Logo
9:55 am - 4:25 pm
SEA
-
UVF
26h 30m2 stops
Air Canada Logo
5:15 pm - 2:31 pm
UVF
-
SEA
25h 16m2 stops
$726Air Canada
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.

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 September, where tickets cost $613 (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 $1,725 respectively.

Find deals

Good to know

Low seasonJuly
Cheapest flight$195
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 29% 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 3 days, the lowest price for a flight from Seattle to Castries was $195 for a one-way ticket and $491 for a round-trip.

  • 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.
7.2
American AirlinesOverall score based on 11057 reviews
8.0Crew
6.9Entertainment
7.5Boarding
6.5Food
7.2Comfort
Airline reviews

Experience was good, however I had a delay due to weather happening and had to re purchase a seat on a new plane for a higher price (could be my own issue and misunderstanding) but other than that situation. First time flyer (by myself) was terrific!! The last from ORD to ALO didn't have wifi, but it was only 45 minutes so I'm sure that was part of the reason. Overall my experience was great! Next time I will remember to buy tickets with longer layovers. The delays really saved my overall anxiety. :)

8.0 ExcellentAustin, Dec 2025
ECP - CLT
Read more American Airlines reviews

Experience was good, however I had a delay due to weather happening and had to re purchase a seat on a new plane for a higher price (could be my own issue and misunderstanding) but other than that situation. First time flyer (by myself) was terrific!! The last from ORD to ALO didn't have wifi, but it was only 45 minutes so I'm sure that was part of the reason. Overall my experience was great! Next time I will remember to buy tickets with longer layovers. The delays really saved my overall anxiety. :)

Flight was delayed 17 hours due to aircraft issues. American did provide hotel, transportation and meals, 3 hours past boarding time, but it took us another hour to get the vouchers.

Flight was on time is the only good thing. Person loading the plane called 1-6 to board at the same time, made it chaotic. Plane was too small for even putting backpacks in overhead. Seat for normal sized people were too small. The WIFI didn't work. When we landed had to wait because not enough ground crew.

Did not understand a single word the attendant said on the pa system. I was glad it was not an emergency.

Flight was late and boarding was confusing because gate changed and I didn’t get a notification

Gate was overcrowded. Gate agents performed very well. Flight crew was top notch! Efficient & professional & courteous. Both meals not thermalized well. Dinner main dish was actually cold in the center. Almost inedible. Breakfast sandwich was lukewarm.

The boarding was as always, the crew tried their best but not enough. The food was a disaster I had dietary restrictions that were half met because the company did not loaded the food for the flight. The entertainment screen was fine but content was not and also they removed the free messaging option from the flight and they charged 30 dollars for that crappy bandwidth. This flight is not worth the cost and the company is going down on quality.

Not comparable to Qatar Airways services on flights to Doha. Flight attendants provided basic services; I was never recognized by name or as an Executive Platinum member. Restrooms were not kept clean during the flight.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..

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

Information on your arrival and departure airports

Seattle (SEA)
Castries (UVF)