$689 Find Cheap Flights from Seattle to Saint Lucia

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 Saint Lucia departing on 12/1. 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

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Cheap Flights from Seattle to Saint Lucia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Saint Lucia 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 Saint Lucia

Mon, Dec 1 - Wed, Dec 10
Air Canada Logo
10:00 am - 4:00 pmSEA-UVF
26h 00m2 stops
Air Canada Logo
5:05 pm - 9:56 pmUVF-SEA
32h 51m1 stop
$689Air Canada
Find Deal
Mon, Dec 1 - Wed, Dec 10
American Airlines Logo
11:10 pm - 1:00 pmSEA-UVF
9h 50m1 stop
American Airlines Logo
3:05 pm - 11:22 pmUVF-SEA
12h 17m1 stop
$743American Airlines
Find Deal
Tue, Jul 29 - Tue, Aug 5
 Logo
2:05 pm - 1:45 pmSEA-UVF
44h 40m3 stops
 Logo
3:10 pm - 11:00 amUVF-SEA
22h 50m1 stop
Tue, Jul 29 - Tue, Aug 5
 Logo
2:05 pm - 1:45 pmSEA-UVF
44h 40m2 stops
 Logo
3:10 pm - 11:00 amUVF-SEA
22h 50m1 stop
Tue, Jul 29 - Tue, Aug 5
 Logo
2:05 pm - 1:45 pmSEA-UVF
44h 40m3 stops
 Logo
3:10 pm - 10:16 pmUVF-SEA
34h 06m2 stops
Tue, Jul 29 - Tue, Aug 5
 Logo
2:05 pm - 1:45 pmSEA-UVF
44h 40m3 stops
 Logo
3:10 pm - 6:38 pmUVF-SEA
30h 28m3 stops
Tue, Jul 29 - Tue, Aug 5
American Airlines Logo
8:16 pm - 2:00 pmSEA-UVF
14h 44m1 stop
American Airlines Logo
3:00 pm - 11:57 pmUVF-SEA
11h 57m1 stop
$983American Airlines
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Wed, Jul 23 - Sun, Jul 27
WestJet Logo
7:35 pm - 1:45 pmSEA-UVF
15h 10m2 stops
WestJet Logo
2:35 pm - 6:38 pmUVF-SEA
31h 03m2 stops
$1,218WestJet
Find Deal
Wed, Jul 23 - Sun, Jul 27
 Logo
5:30 pm - 2:15 pmSEA-UVF
41h 45m3 stops
 Logo
2:35 pm - 10:16 pmUVF-SEA
34h 41m3 stops
$1,377
Find Deal
Wed, Jul 23 - Sun, Jul 27
American Airlines Logo
8:16 pm - 2:00 pmSEA-UVF
14h 44m1 stop
American Airlines Logo
3:20 pm - 9:56 amUVF-SEA
21h 36m2 stops
$1,386American Airlines
Find Deal
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KAYAK's insights & trends for Seattle to Saint Lucia flights

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

Which airlines provide the cheapest flights from Seattle to Saint Lucia?

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 Saint Lucia were found on Air Canada ($689) and American Airlines ($743).


Good to know

Low seasonJanuary
High seasonFebruary
Cheapest flight$689
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 24% lower on average.
Flight from Seattle to Castries

FAQs - booking Saint Lucia flights

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

    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 Saint Lucia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to Saint Lucia 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 Saint Lucia?

    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 from Seattle to Saint Lucia with an airline and back with another airline.

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

    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 from Seattle to Saint Lucia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Saint Lucia?

    The cheapest time of day to fly to Saint Lucia is generally at night, when round-trip flights cost $863 on average. The most expensive time of day to fly to Saint Lucia is generally at night, which is peak travel time and where the average cost of a ticket is $863.

Top airline flying from Seattle to Saint Lucia

 
Need help choosing which airline to fly with from Seattle to Saint Lucia? 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 10000 reviews
7.5Boarding
7.2Comfort
6.9Entertainment
6.5Food
8.0Crew
Airline reviews

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

10.0 ExcellentFraxys, Jun 2025ONT - DFW
Read more American Airlines reviews

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Food was terrible, all served at once, poor quality . Wine and bread offered only once.

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

Everything you need to know for your flight from Seattle to Saint Lucia

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