SEA - UVF

$340 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 6/7. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Bundle and saveSave money when you bundle your flight + hotel.

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Everything you should know

Cheapest round-trip
$610
JetBlue
Sun 6/7Thu 6/11
SEA - UVF • 1 stop
Top airlines
JetBlue
Cheapest • from $610 (round-trip)
American Airlines
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
Chicago (ORD)
Cheapest • Avg $619 (round-trip)
Miami (MIA)
Shortest trip • 11h 16m (one-way)
Insights
Insights
Insights
Insights
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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, Jun 7 - Thu, Jun 11
JetBlue Logo
11:52 pm - 3:19 pm
SEA
-
UVF
12h 27m
1 stop
JetBlue Logo
1:47 pm - 9:05 pm
UVF
-
SEA
34h 18m
1 stop
$610JetBlue
Sun, Apr 26 - Thu, Apr 30
Air Canada Logo
8:00 am - 3:20 pm
SEA
-
UVF
28h 20m
1 stop
Air Canada Logo
4:15 pm - 9:08 pm
UVF
-
SEA
31h 53m
1 stop
$652Air Canada
Sun, Apr 26 - Thu, Apr 30
Air Canada Logo
8:00 am - 3:20 pm
SEA
-
UVF
28h 20m
1 stop
Air Canada Logo
4:15 pm - 9:08 pm
UVF
-
SEA
31h 53m
1 stop
$682Air Canada
Sun, Apr 26 - Thu, Apr 30
Air Canada Logo
10:20 am - 3:20 pm
SEA
-
UVF
26h 00m
2 stops
Air Canada Logo
4:15 pm - 9:08 pm
UVF
-
SEA
31h 53m
1 stop
$735Air Canada
Sun, Apr 26 - Thu, Apr 30
Air Canada Logo
8:00 am - 3:20 pm
SEA
-
UVF
28h 20m
1 stop
Air Canada Logo
4:15 pm - 9:08 pm
UVF
-
SEA
31h 53m
1 stop
$803Air Canada
Sun, Jun 7 - Thu, Jun 11
Multiple Airlines Logo
11:59 pm - 2:10 pm
SEA
-
UVF
35h 11m
3 stops
Multiple Airlines Logo
2:30 pm - 9:50 am
UVF
-
SEA
22h 20m
2 stops
$835Multiple Airlines
Sun, Apr 26 - Thu, Apr 30
Air Canada Logo
10:20 am - 3:20 pm
SEA
-
UVF
26h 00m
2 stops
Air Canada Logo
4:15 pm - 6:30 pm
UVF
-
SEA
29h 15m
2 stops
$852Air Canada
Sun, Jun 7 - Thu, Jun 11
Multiple Airlines Logo
7:20 pm - 2:10 pm
SEA
-
UVF
39h 50m
2 stops
Multiple Airlines Logo
2:30 pm - 9:50 am
UVF
-
SEA
22h 20m
2 stops
$859Multiple Airlines
Wed, Jun 10 - Wed, Jun 17
Multiple Airlines Logo
7:20 pm - 2:10 pm
SEA
-
UVF
39h 50m
2 stops
Multiple Airlines Logo
4:20 pm - 9:05 pm
UVF
-
SEA
31h 45m
1 stop
$905Multiple Airlines
Sun, Jun 7 - Thu, Jun 11
Multiple Airlines Logo
11:59 pm - 2:10 pm
SEA
-
UVF
35h 11m
3 stops
Multiple Airlines Logo
2:30 pm - 9:50 am
UVF
-
SEA
22h 20m
3 stops
$906Multiple Airlines
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.

Which airlines provide the cheapest flights from Seattle to Castries?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Seattle to Castries were found on JetBlue ($610) and Air Canada ($652).

Find deals

Good to know

Low seasonAugust
Cheapest flight$610
Best time to beat the crowds with an average 28% 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 $610 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 11487 reviews
7.5Boarding
6.4Food
7.9Crew
6.9Entertainment
7.2Comfort
Airline reviews

Absolutely terrible. Would never fly American again. 2 deplaned incidents and delayed by close to 24 hours. $12 meal voucher for first class passengers was an insult to the injury. Pathetic.

2.0 MediocreSaurabh, Mar 2026
DFW - EWR
Read more American Airlines reviews

Absolutely terrible. Would never fly American again. 2 deplaned incidents and delayed by close to 24 hours. $12 meal voucher for first class passengers was an insult to the injury. Pathetic.

Terrible planning. And even worse gate agents. Absolutely rude behavior.

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

Flight was scheduled at 11:26am but they keep Delaying until midnight. They waited at airport restless.

Rough flight No beverage service due to turbulence Bottom Seat cushion was non existent

Great experience. Good dinner and service. FA's were very nice and attentive.

It was great. Smooth flight, comfortable, left on time and landed on time.

Perhaps this is an airport issue, but being in a takeoff queue for over an hour in the taxiing lane is unacceptable. We will definitely be seeking alternative avenues for air travel in the future.

We hoarded. Then we deplaned. Then we waited for 10 hours in the MSP airport due to a wheel misfunction. We understand safety but communication between crew and airport staff was horrible. When we did finally board, we were rushed on and because we were waiting for a “fresh” pilot and crew, we sat in a roasting plane with no A/C for an hour. My question is why was this flight not cancelled right away when they knew this would be a huge issue OR, why did AA not get a substitute plane, considering this was already a full flight? To me, this appears to be a complete breakdown in leadership and utter systems failure. The compensation for completely disrupting travel plans for hundreds, which we paid dearly for, was measly. While we appreciated the lodging for the night, $12 in meal vouchers isn’t going to sustain anyone for over 12 hours. “We apologize; our hands are tied” is no longer an acceptable explanation. We are so completely turned off by this experience and will definitely seek alternative avenues when we need to fly.

Mostly good. The WiFi wasn’t working so that was not great.

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

Information on your arrival and departure airports

Seattle (SEA)
Castries (UVF)