Find flights
When to book
FAQs & Tips
Airlines
Deals

Find cheap flights from Seattle to Saint Lucia from $526

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 8/23. 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
0 bags
Sat 5/25
Sat 6/1

Search hundreds of travel sites at once for deals on flights to Saint Lucia

In the last 7 days travelers have searched 45,119,101 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

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

Good to know

Low season

August

High season

April

Cheapest flight

$526
Best time to beat the crowds but there is an average 144% increase in price.
Most popular time to fly and prices are also 26% 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 to Saint Lucia 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 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 to Saint Lucia with an airline and back to Seattle 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 to Saint Lucia from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines 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.
8.0
DeltaOverall score based on 10975 reviews
8.0entertainment
8.2boarding
7.4food
7.9comfort
8.6crew
Airline reviews

Had a broken tray in business class. Crew just shrugged it off.

2.0 MediocreShiva, Apr 2024SEA - SFO
Read more about Delta reviews

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Just get Economy Plus for international flights, so worth it the extra room, bigger seats…

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

It was spectacular. I had basic Economy and was given so much space and their seats lean back so far. Staff was superb, food was superb, everything was superb, Finnair is Fantastic.

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Cold air blew constantly on my legs almost making me numb.

Book cheap flights from Seattle to Saint Lucia

Recent round-trip flight deals

8/23Fri
1 stopAmerican Airlines
11h 15mSEA-UVF
8/28Wed
1 stopAmerican Airlines
12h 09mUVF-SEA
$526
8/23Fri
1 stopAmerican Airlines
11h 15mSEA-UVF
8/28Wed
2 stopsAmerican Airlines
20h 09mUVF-SEA
$544
8/23Fri
2 stopsAmerican Airlines
26h 40mSEA-UVF
8/28Wed
2 stopsAmerican Airlines
25h 26mUVF-SEA
$662
8/22Thu
2 stopsAmerican Airlines
34h 01mSEA-UVF
8/28Wed
1 stopAmerican Airlines
12h 09mUVF-SEA
$667
8/22Thu
2 stopsAmerican Airlines
34h 01mSEA-UVF
8/28Wed
2 stopsAmerican Airlines
25h 26mUVF-SEA
$683
5/14Tue
1 stopAmerican Airlines
13h 40mSEA-UVF
5/21Tue
2 stopsAmerican Airlines
23h 08mUVF-SEA
$732
5/14Tue
2 stopsAmerican Airlines
17h 16mSEA-UVF
5/21Tue
2 stopsAmerican Airlines
23h 08mUVF-SEA
$734
6/12Wed
2 stopsAmerican Airlines
27h 32mSEA-UVF
6/25Tue
2 stopsAmerican Airlines
33h 38mUVF-SEA
$795
6/12Wed
1 stopAmerican Airlines
14h 24mSEA-UVF
6/25Tue
2 stopsAmerican Airlines
33h 38mUVF-SEA
$796
6/11Tue
2 stopsAmerican Airlines
33h 05mSEA-UVF
6/25Tue
2 stopsAmerican Airlines
33h 38mUVF-SEA
$817

Search by stops

Search by airline

Search by price

Last minute flights from Seattle to Saint Lucia

Last minute flight, train and bus deals

4/29Mon
multi-stopDelta
12h 22mSEA-UVF
5/3Fri
multi-stopDelta
21h 36mUVF-SEA
$926
4/29Mon
multi-stopAmerican Airlines
15h 09mSEA-UVF
5/3Fri
multi-stopAmerican Airlines
24h 57mUVF-SEA
$1,131
4/29Mon
multi-stopAmerican Airlines
17h 25mSEA-UVF
5/3Fri
multi-stopAmerican Airlines
21h 37mUVF-SEA
$1,132
4/28Sun
multi-stopAmerican Airlines
34h 20mSEA-UVF
5/3Fri
multi-stopAmerican Airlines
31h 19mUVF-SEA
$1,188

Search by stops

Search by airline

Search by price

Seattle - Saint Lucia Flights

Departure:

Seattle (SEA)United States

Cabin classes: