$208 Find Cheap Flights from San Francisco to Saint Lucia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Saint Lucia departing on 7/21. 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

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Flight Deals

Book Cheap San Francisco to Saint Lucia Plane Tickets

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

Thu, Aug 20 - Tue, Aug 25
Delta Logo
4:05 pm - 2:14 pm
SFO
-
UVF
19h 09m
1 stop
Delta Logo
3:34 pm - 11:54 pm
UVF
-
SFO
11h 20m
1 stop
$516Delta
Wed, Aug 26 - Wed, Sep 2
American Airlines Logo
3:38 pm - 2:29 pm
SFO
-
UVF
19h 51m
2 stops
American Airlines Logo
3:04 pm - 8:50 am
UVF
-
SFO
20h 46m
2 stops
$526American Airlines
Sat, Aug 29 - Thu, Sep 10
Delta Logo
10:30 pm - 2:08 pm
SFO
-
UVF
12h 38m
1 stop
Delta Logo
3:38 pm - 10:12 am
UVF
-
SFO
21h 34m
1 stop
$577Delta
Thu, Aug 20 - Tue, Aug 25
American Airlines Logo
5:00 pm - 2:14 pm
SFO
-
UVF
18h 14m
2 stops
American Airlines Logo
3:04 pm - 10:07 am
UVF
-
SFO
22h 03m
2 stops
$582American Airlines
Sat, Aug 29 - Wed, Sep 9
Delta Logo
3:20 pm - 2:08 pm
SFO
-
UVF
19h 48m
1 stop
Delta Logo
3:28 pm - 10:12 am
UVF
-
SFO
21h 44m
1 stop
$623Delta
Wed, Jul 1 - Fri, Jul 10
American Airlines Logo
9:50 pm - 12:08 pm
SFO
-
UVF
11h 18m
1 stop
American Airlines Logo
2:50 pm - 11:38 pm
UVF
-
SFO
11h 48m
1 stop
$628American Airlines
Wed, Jul 1 - Fri, Jul 10
American Airlines Logo
6:56 pm - 12:08 pm
SFO
-
UVF
14h 12m
2 stops
American Airlines Logo
2:50 pm - 11:38 pm
UVF
-
SFO
11h 48m
1 stop
$633American Airlines
Fri, Aug 28 - Thu, Sep 10
Delta Logo
1:45 pm - 2:08 pm
SFO
-
UVF
21h 23m
1 stop
Delta Logo
3:38 pm - 10:12 am
UVF
-
SFO
21h 34m
1 stop
$638Delta
Thu, Aug 20 - Tue, Aug 25
American Airlines Logo
10:05 pm - 2:14 pm
SFO
-
UVF
13h 09m
1 stop
American Airlines Logo
3:04 pm - 10:07 am
UVF
-
SFO
22h 03m
2 stops
$643American Airlines
Fri, Jun 12 - Mon, Jun 15
Multiple Airlines Logo
4:30 pm - 7:00 pm
SFO
-
SLU
23h 30m
2 stops
Multiple Airlines Logo
9:10 am - 10:50 am
SLU
-
SFO
28h 40m
2 stops
$1,185Multiple Airlines
Booking Insights

KAYAK's insights & trends for San Francisco to Saint Lucia flights

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

What is the cheapest month to fly from San Francisco to Saint Lucia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Saint Lucia, 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 San Francisco to Saint Lucia is May, when tickets cost $296 (return) on average. On the other hand, the most expensive months are June and October, when the average cost of round-trip tickets is $1,352 and $805 respectively.

Good to know

Low seasonJune
Cheapest flight$208
Best time to beat the crowds but there is an average 65% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from San Francisco to Castries

FAQs - booking Saint Lucia flights

  • How does KAYAK find such low prices on flights from San Francisco 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 San Francisco to Saint Lucia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from San Francisco 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 San Francisco 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 San Francisco 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 San Francisco 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 San Francisco to Saint Lucia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from San Francisco to Saint Lucia

 
Need help choosing which airline to fly with from San Francisco 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.
7.9
DeltaOverall score based on 8458 reviews
7.2Food
8.5Crew
8.1Boarding
7.9Comfort
7.8Entertainment
Airline reviews

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

10.0 ExcellentTeresa, Apr 2026
SMF - LAX
Read more Delta reviews

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

N Everything was perfect from boarding to assistance to baggage in Tampa

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I took seat 15A in anticipation of window seat, there is no window.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

The crew was very attentive through out the flight. Seats were comfortable, nice flight bag with pillow and blanket. Food was okay, since it was a overnight flight seemed to go by fast.

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

Boarding gate at LAX was too crowded—two gates next to one another

On time departure and early arrival. Flight attendant very nice.

The business class layout of chairs was weired. You are sitting directly across stranger.,

The SFO Lounge crew were amazing. The bartender Faris was great. Thanks!

Friendly crew is the only nice thing. Seats uncomfortable. Food and snacks horrible. Movies were the same as the first 10 hour flight two weeks before

Was not able to do a online check-in because the American Airlines system doesn't store our visa or other passport information, allowing us to have a trouble-free check-in. We were forced to have to check-in at the counter which Changes are upgrade status given that we were not able to check in much earlier.

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

We left at 1030 am pacific from LA and supposed to land at 7 pm Eastern in NY. They made a detour, stopped in Philadelphia and didn’t land till 1130 PM Eastern!!! Worst flight experience with no pilot communication with no explanation as to what was going on. Everyone was very frustrated to say the least.

Direct tv did not work on flight Short flight so no good service offered Arrived early to destination and had to wait for gate to open. Deplaned LATER than if we arrived on time!! Poor planning Jet blue has had something go wrong on every flight I’ve taken with them in last five years. Terribly run airline

Given us a free miles or free flight for waiting for 9 hours I didn’t get home till 5am in the morning and I was supposed to be home at 9:30 touch down.

Excellent price. Everything on time. two bad parts. Kayak said I couldn't sign in for the flight online, but I got an email at the same time from Jet Blue and they let me sign in online. Second bad part was that, although I had provided my known traveler number, neither of my boarding passes, for this flight and the previous one, had TSA pre-check showing.

Jet blue was great But the Jayak system Wasa pure nightmare and wasted so much of my time and energy by not giving me a way to access jet blue to check in the flight back I didn’t even get the number confirmation code 24 hours before. Because I didn’t receive the email with the confirmation code I could NoT CHECk IN. I spoke to a kayak third party and they informed me I could not carry a carry on, on the flight which caused me so much extra stress it was just too much. You can be sure I will not be using it recommending your site. Again.

There was a screen but no earphones that could use the older input so I could listen to anything.

My experience with JetBlue was fine BUT I am very upset with Kayak! JetBlue had delayed our scheduled departure by an hour and you NEVER notified me of the change. I did not hear directly from JetBlue because the trip was booked through Kayak, a mistake I will not repeat. Your reminder of the our trip last week still had the WRONG departure time. Our return trip has also changed, and again no notice from you.

Jet blue just had great service overall! Only a little turbulence heading out of Austin, otherwise the jet stream helped the speed of the trip!

Boarding was quick and efficient. The flight crew were friendly. There were limited food options available on the flight. The pocket guide said there would be salad and sandwich sections available on flights over 3.5 hours. The only food available were snack boxes. And those were limited as well. My flight was over 5 hours. The entertainment system worked well. I had both extra legroom seats and regular coach seats. The seats were not very comfortable. The entertainment controls in the armrest made it difficult to rest my arm without changing the channel on my neighbors TV. Overall, my experience was mediocre.

Purchased through 3rd party vendor which made everything difficult. Unable to check in online. Unable to get flight updates easily, tsa precheck information didn’t carry through, longer time to check in in person. Entertainment looked good but had to purchase conventional headphones to view.

Boarding was fast, easy, and we landed early. The entertainment system was very buggy and kept resetting throughout the flight.

Everything you need to know for your flight from San Francisco to Saint Lucia

Information on your arrival and departure airports