$353 Find Cheap Flights from San Francisco to Saint Lucia - Compare and Save

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 1/4. 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

Mon, Nov 16 - Wed, Nov 25
American Airlines Logo
11:44 pm - 3:01 pmSFO  San Francisco-UVF Castries Hewanorra
11h 17m1 stop Miami
American Airlines Logo
3:56 pm - 1:06 amUVF  Castries Hewanorra-SFO San Francisco
13h 10m1 stop Miami
$680American Airlines
Fri, Sep 25 - Sat, Oct 3
American Airlines Logo
9:54 pm - 2:02 pmSFO  San Francisco-UVF Castries Hewanorra
13h 08m1 stop Miami
American Airlines Logo
3:02 pm - 11:59 pmUVF  Castries Hewanorra-SFO San Francisco
11h 57m1 stop Miami
$680American Airlines
Wed, Sep 2 - Wed, Sep 9
American Airlines Logo
9:35 pm - 1:49 pmSFO  San Francisco-UVF Castries Hewanorra
13h 14m1 stop Miami
American Airlines Logo
3:02 pm - 11:59 pmUVF  Castries Hewanorra-SFO San Francisco
11h 57m1 stop Miami
$685American Airlines
Fri, Sep 25 - Sat, Oct 3
American Airlines Logo
7:55 pm - 2:02 pmSFO  San Francisco-UVF Castries Hewanorra
15h 07m2 stops Los Angeles Miami
American Airlines Logo
3:02 pm - 10:12 amUVF  Castries Hewanorra-SFO San Francisco
22h 10m2 stops Miami Dallas/Fort Worth
$685American Airlines
Sat, Sep 12 - Sun, Sep 20
Multiple Airlines Logo
6:00 am - 1:40 pmSFO  San Francisco-UVF Castries Hewanorra
28h 40m3 stops Calgary Winnipeg Toronto Pearson Intl
Multiple Airlines Logo
2:30 pm - 6:00 pmUVF  Castries Hewanorra-SFO San Francisco
30h 30m3 stops Toronto Pearson Intl Winnipeg Vancouver Intl
$714Multiple Airlines
Sat, Sep 12 - Sun, Sep 20
Multiple Airlines Logo
6:00 am - 1:40 pmSFO  San Francisco-UVF Castries Hewanorra
28h 40m2 stops Calgary Toronto Pearson Intl
Multiple Airlines Logo
2:30 pm - 6:00 pmUVF  Castries Hewanorra-SFO San Francisco
30h 30m3 stops Toronto Pearson Intl Edmonton Vancouver Intl
$718Multiple Airlines
Tue, Oct 27 - Mon, Nov 2
Multiple Airlines Logo
10:55 pm - 3:14 pmSFO  San Francisco-UVF Castries Hewanorra
13h 19m1 stop New York John F Kennedy Intl
Multiple Airlines Logo
5:40 pm - 1:10 pmUVF  Castries Hewanorra-SFO San Francisco
23h 30m1 stop Toronto Pearson Intl
$718Multiple Airlines
Fri, Aug 28 - Mon, Aug 31
Delta Logo
4:05 pm - 2:14 pmSFO  San Francisco-UVF Castries Hewanorra
19h 09m1 stop Atlanta Hartsfield-Jackson
Delta Logo
3:34 pm - 11:58 pmUVF  Castries Hewanorra-SFO San Francisco
11h 24m1 stop Atlanta Hartsfield-Jackson
$1,008Delta
Mon, Jan 4 - Mon, Jan 11
Delta Logo
2:20 pm - 3:05 pmSFO  San Francisco-UVF Castries Hewanorra
20h 45m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
Delta Logo
4:25 pm - 10:54 amUVF  Castries Hewanorra-SFO San Francisco
22h 29m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
$1,013Delta
Sun, Sep 20 - Sun, Sep 27
JetBlue Logo
11:59 pm - 3:33 pmSFO  San Francisco-UVF Castries Hewanorra
12h 34m1 stop New York John F Kennedy Intl
JetBlue Logo
4:39 pm - 9:14 amUVF  Castries Hewanorra-SFO San Francisco
19h 35m1 stop New York John F Kennedy Intl
$19,165JetBlue
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 January, when tickets cost $637 (return) on average. On the other hand, the most expensive months are June and October, when the average cost of round-trip tickets is $1,313 and $1,000 respectively.

Good to know

Low season

August

Cheapest flight

$353
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 4% 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 8496 reviews
7.8Comfort
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
Airline reviews

Internet connectivity still seems to be touchy on these flights, making it difficult to rely on it for getting work done.

8.0 ExcellentMatthew, Aug 2026
Read more Delta reviews

Internet connectivity still seems to be touchy on these flights, making it difficult to rely on it for getting work done.

My son’s suitcase was left behind at SFO and did not make the flight.

Crew was absolutely fantastic and we’re so welcoming and friendly ❤️

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!!!

Flight attendant made the flight very enjoyable. He was courteous and gave great care to the passengers

Not good. Flight crew, was not friendly and just shoved stuff at us. Not the way I like to travel.

Aside from the little delay, overall was flight good. Made it safely. Thanks!

Over the course of 7 months of travel, I can count on my hand the number of times the flight has departed on time. Majority of the instances have been related to non-weather reasons. Would not recommend flying this Airline

The food was okay and the space in business class was smaller than we had to Singapore.

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

The flight was on time the crew was courteous that makes for a good flight.

The seats were roomier than other airplanes I’ve been on.

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.

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