$536 Find Cheap Flights from San Francisco to Saint Lucia - Compare and Save

This is the cheapest round-trip 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 9/2. 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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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

Wed, Sep 2 - Wed, Sep 9
Delta Logo
10:00 pm - 2:14 pm
SFO
-
UVF
13h 14m
1 stop
Delta Logo
3:32 pm - 11:57 pm
UVF
-
SFO
11h 25m
1 stop
$536Delta
Wed, Sep 2 - Wed, Sep 9
Delta Logo
4:05 pm - 2:14 pm
SFO
-
UVF
19h 09m
2 stops
Delta Logo
3:32 pm - 11:57 pm
UVF
-
SFO
11h 25m
1 stop
$541Delta
Wed, Aug 12 - Mon, Aug 17
American Airlines Logo
4:31 pm - 2:19 pm
SFO
-
UVF
18h 48m
2 stops
American Airlines Logo
2:49 pm - 12:54 am
UVF
-
SFO
13h 05m
1 stop
$546American Airlines
Wed, Aug 12 - Mon, Aug 17
American Airlines Logo
8:00 am - 2:19 pm
SFO
-
UVF
27h 19m
1 stop
American Airlines Logo
2:49 pm - 12:54 am
UVF
-
SFO
13h 05m
1 stop
$554American Airlines
Mon, Aug 3 - Mon, Aug 10
American Airlines Logo
9:49 pm - 12:15 pm
SFO
-
UVF
11h 26m
1 stop
American Airlines Logo
3:19 pm - 10:07 am
UVF
-
SFO
21h 48m
2 stops
$592American Airlines
Wed, Aug 12 - Mon, Aug 17
American Airlines Logo
3:46 pm - 2:19 pm
SFO
-
UVF
19h 33m
2 stops
American Airlines Logo
3:19 pm - 1:18 pm
UVF
-
SFO
24h 59m
2 stops
$597American Airlines
Wed, Aug 12 - Mon, Aug 17
American Airlines Logo
8:00 am - 2:19 pm
SFO
-
UVF
27h 19m
1 stop
American Airlines Logo
2:49 pm - 12:54 am
UVF
-
SFO
13h 05m
1 stop
$605American Airlines
Sun, Aug 23 - Fri, Aug 28
American Airlines Logo
7:02 pm - 2:19 pm
SFO
-
UVF
16h 17m
2 stops
American Airlines Logo
2:49 pm - 10:07 am
UVF
-
SFO
22h 18m
2 stops
$612American Airlines
Mon, Nov 16 - Wed, Nov 25
Delta Logo
10:30 pm - 3:10 pm
SFO
-
UVF
12h 40m
1 stop
Delta Logo
4:25 pm - 12:15 am
UVF
-
SFO
11h 50m
1 stop
$643Delta
Mon, Nov 30 - Sat, Dec 5
Multiple Airlines Logo
12:00 pm - 7:00 pm
SFO
-
SLU
27h 00m
2 stops
Multiple Airlines Logo
3:45 pm - 9:33 pm
SLU
-
SFO
57h 48m
2 stops
$1,090Multiple 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 October and November, when the average cost of round-trip tickets is $774 and $734 respectively.

Good to know

Low seasonJanuary
Cheapest flight$536
Best time to beat the crowds with an average 25% drop 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.
7.8
DeltaOverall score based on 8451 reviews
7.8Comfort
7.8Entertainment
8.1Boarding
8.5Crew
7.2Food
Airline reviews

Flight delayed four separate times. I’m now one hour hours late to landing.

2.0 MediocreTravis, Jun 2026
SFO - LAX
Read more Delta reviews

Flight delayed four separate times. I’m now one hour hours late to landing.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

New boarding doesn't make sense. Filling front first is slow.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

The plane was spartan, the seats not that comfortable. It was like flying a super low budget airline. They charged for coffee!!! I have never, ever experienced that before.

I had no problems but the changing of planes that I was supposed to be on was confusing. Maybe it would be helpful to let people know your flight changed. Not everyone understands airports or how flying works.

Flight was delayed multiple times without giving any particular reason and the only thing that was communicated was that 'Aircraft is getting ready'. I was stuck at SFO airport for 15 hours and finally took Southwest Airlines flight back home to Dallas.

I was not clear if food was offered or not.

Agency very bad had to cancelled my booking too many changes in the flight changed my flight to 1 week

Take-off delayed an hour because of a missing flight officer, so,arrived in Charlotte lates causing many passengers to miss connections. Otherwise a very good flight, safe and comfortable, with an excellent professional crew.

B-class on an old plane with antiquated amenities and poor service. Landed in Rome w/o bag that didn’t make the connection (plenty of time in London). Bag will come to hotel NOT the day it lands but the following night!! Still waiting for bag…BA had nothing to offer in support and couldn’t even tell me their comp, told to submit receipts and then I’ll learn what is or isn’t covered.

Premium Economy Good crew, good service, excellent food. Seat back screen just not bright enough.

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

Not good. One of my luggage is missing. And until now they can’t find it

Seats were great, the staff was great, and the food was about the best I've had on a plane, and is especially the best of any US-based carrier I've flown. Free Wi-Fi was also great.

It was inexplicably canceled and we are stuck in LA, haven't gotten home and it has been an inconvenience having lost work (on unpaid leave for my husband).

It was good. I’m very disappointed that they don’t give commentary ear pods for the movie. I forgot mine at home

Rude crew member. She seemed annoyed at me without me saying a single word. Also loudly admonished me for having my bag next to my seat instead of tucked away before landing. Just telling me to put it away and guiding me without giving me a lecture would have been enough.

Too many long delays with JetBlue. Worst major airline that serves JFK but unfortunately I keep going back because of the prices.

Little snafu at boarding. Staff communicated with gate poorly. Flight attendant was rude making disembark early. This was an older mint class. Needs an overhaul for sure. Food was good. The male flight attendant was really nice.

I really liked the way snacks and drinks were available throughout the flight!!! The flight attendants were also all fantastic!

Always like Jet Blue! It seems, however, that people are getting bigger & seats are getting smaller! We had a very full flight and I couldn't get an aisle seat like I always do. I wish there were more leg room. People sitting next to me were very nice though so it was fine to disturb them if I needed to use the restroom. Otherwise the flight was fine but a bit long.

None of the in flight Direct TV worked. A better selection of Shows would have been better. The baggage was s low. Otherwise we enjoyed our flight!

the staff was very helpful and the airline was very good.

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

Information on your arrival and departure airports