SEA - UVF

$491 Find Cheap Flights from Seattle to Castries

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 1/18. 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
Typical prices: $541-$719
Delta
Sun 1/18Thu 1/29
SEA - UVF • 1 stop
Cheapest one-way
Multiple Airlines
Mon 11/3
SEA - UVF • multi-stop
Top airlines
Delta
Cheapest • from $491 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
September
Cheapest • 39% 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 pmSEA-UVF
19h 00m1 stop
Delta Logo
4:25 pm - 10:07 amUVF-SEA
21h 42m1 stop
$491Delta
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Sun, Jan 18 - Thu, Jan 29
American Airlines Logo
11:12 pm - 4:02 pmSEA-UVF
12h 50m2 stops
American Airlines Logo
5:02 pm - 9:37 amUVF-SEA
20h 35m2 stops
$496American Airlines
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Sun, Jan 11 - Sat, Jan 17
American Airlines Logo
11:12 pm - 4:02 pmSEA-UVF
12h 50m2 stops
American Airlines Logo
5:02 pm - 11:01 amUVF-SEA
21h 59m2 stops
$521American Airlines
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Wed, Jan 7 - Thu, Jan 15
Delta Logo
4:05 pm - 3:05 pmSEA-UVF
19h 00m1 stop
Delta Logo
4:25 pm - 10:07 amUVF-SEA
21h 42m1 stop
$552Delta
Find Deal
Thu, Jan 8 - Wed, Jan 14
Delta Logo
4:05 pm - 3:05 pmSEA-UVF
19h 00m1 stop
Delta Logo
4:25 pm - 10:07 amUVF-SEA
21h 42m1 stop
$599Delta
Find Deal
Sat, Jan 10 - Wed, Jan 14
Air Canada Logo
8:10 am - 4:25 pmSEA-UVF
28h 15m1 stop
Air Canada Logo
5:15 pm - 10:06 pmUVF-SEA
32h 51m2 stops
$601Air Canada
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Fri, Jan 9 - Wed, Jan 14
Air Canada Logo
8:00 pm - 4:25 pmSEA-UVF
40h 25m2 stops
Air Canada Logo
5:15 pm - 2:31 pmUVF-SEA
25h 16m2 stops
$611Air Canada
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Wed, Jan 7 - Tue, Jan 13
Multiple Airlines Logo
7:55 am - 2:50 pmSEA-UVF
26h 55m1 stop
Multiple Airlines Logo
3:40 pm - 2:20 pmUVF-SEA
26h 40m2 stops
$781Multiple Airlines
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Mon, Jan 12 - Thu, Jan 15
Multiple Airlines Logo
6:28 pm - 2:50 pmSEA-UVF
16h 22m2 stops
Multiple Airlines Logo
3:40 pm - 7:21 pmUVF-SEA
31h 41m1 stop
$795Multiple Airlines
Find Deal
Sun, Jan 11 - Thu, Jan 15
WestJet Logo
3:10 pm - 2:50 pmSEA-UVF
43h 40m2 stops
WestJet Logo
3:40 pm - 2:38 pmUVF-SEA
50h 58m2 stops
$843WestJet
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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 January.

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 $1,663 respectively.

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Good to know

Low seasonJanuary
Cheapest flight$491
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly and prices are also 28% 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 $491 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.
7.2
American AirlinesOverall score based on 11037 reviews
7.5Boarding
8.0Crew
6.9Entertainment
6.4Food
7.2Comfort
Airline reviews

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

10.0 ExcellentAnonymous, Nov 2025SBA - PHX
Read more American Airlines reviews

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

Did not get any refreshments. Crew was very nice but limited. Small seats

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

We are too tired and frustrated to comment politely at this point

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

Information on your arrival and departure airports

Seattle (SEA)
Castries (UVF)

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