$386 Find Cheap Flights from San Francisco to Saint Lucia - Compare and Save

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1 adult, Economy, 0 bags

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Price, demand and travel trends for San Francisco to Saint Lucia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from San Francisco to Saint Lucia cheaper or more expensive than last year?

Fares from San Francisco to Saint Lucia are running about 6% higher than they were around this time last year, averaging $882 round-trip.

What are the cheapest fares from San Francisco to Saint Lucia right now?

The cheapest fare from San Francisco to Saint Lucia in the last week was $754 round-trip, to Castries Hewanorra (UVF).

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

March is the cheapest time of year to fly, with average fares of $743. Prices are highest in February, when average flight costs increase to around $1,141.

Which airport in Saint Lucia is the cheapest to fly to from San Francisco?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Saint Lucia are:

• Castries Hewanorra (UVF) (avg. price $903)
• Castries George F. L. Charle (SLU) (avg. price $1,023)

What’s the cheapest day to fly from San Francisco to Saint Lucia?

Monday tends to be the cheapest day to fly from San Francisco to Saint Lucia, while Thursday is the most expensive. Fares run about 19% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from San Francisco to Saint Lucia?

Data from the past 12 months shows it's cheapest to fly to Saint Lucia during the afternoon with average prices of $858. The evening is the most expensive time to fly, with average prices of $1,141.

Key details for San Francisco to Saint Lucia flights

Low season

July

Cheapest flight

$386
Beat the crowds with an average 41% drop in travelers.
The most popular month to fly with an average 82% increase in travelers.
One-way flight from San Francisco to Castries

Your San Francisco to Saint Lucia flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from San Francisco to Saint Lucia?

    Fares from San Francisco to Saint Lucia are around their usual level right now. A round-trip under $743 is considered a good deal, so it's worth keeping an eye out, or setting a Price Alert to catch price changes.

  • How much should I budget for a flight from San Francisco to Saint Lucia?

    Over the past 12 months, round-trip fares from San Francisco to Saint Lucia have ranged from $743 to $1,084.

  • What are the main airports serving Saint Lucia?

    Flights to Saint Lucia use two main airports, Castries George F. L. Charle (SLU) and Castries Hewanorra (UVF).

  • What airlines fly nonstop from San Francisco to Saint Lucia?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from San Francisco to Saint Lucia. One-stop options include:

    • American Airlines
    • Delta
    • JetBlue

  • Which cabin classes are available on flights from San Francisco to Saint Lucia?

    On flights from San Francisco to Saint Lucia you can book Economy Class or First Class.

Your guide to booking San Francisco to Saint Lucia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for March when flights are typically cheapest and avoid February when prices are at their highest.
  • Flying on Monday is usually the cheapest. Flights on Thursday cost about 19% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Castries Hewanorra (UVF) is the cheapest airport to fly into from San Francisco. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Castries, which is the most popular destination in Saint Lucia. From there, it's easy to continue on to other popular destinations such as Soufrière, Gros Islet and Vieux Fort.

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 8696 reviews
8.1Boarding
7.8Entertainment
8.5Crew
7.2Food
7.8Comfort
Airline reviews

I used by Skymiles to upgrade to First so that I could comfortably work using my laptop. But WiFi was intermittent and unavailable for long periods. I feel like I wasted 70,000 miles :(

2.0 MediocreJames, Nov 2026
Read more Delta reviews

I used by Skymiles to upgrade to First so that I could comfortably work using my laptop. But WiFi was intermittent and unavailable for long periods. I feel like I wasted 70,000 miles :(

Everything was pretty good. I would like to have more drinks (water) during four hours of the flight.

WiFi was a major problem and if it does not work on a 4 hour flight then that lowers the overall experience

The Airline Attendant found us in flight and moved us to seats in the front of economy due to the short time we would have to make our connecting flight. We really appreciated it.

Carmen was an absolute delight on the flight staff! Everyone was lovely and made it a very pleasant flight.

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.

They lost my luggage and have ruined first day of my vacation. Still don’t have it. I have nothing. I also paid for a seat I did not get. They changed both our seats with no notice. Will never fly this airline again.

Flight was delayed 3 hours. No food on plane besides snacks

I have flown Jet Blue many times between JFK and SFO. I appreciate how clean the planes are, the ability to select my onboard entertainment and the flight crews have always been amazing! Unfortunately, my trip from SFO to JFK on August 23 was unusual. I arrived early at SFO for the 12:00 noon scheduled boarding. The flight was supposed to take off at 12:45pm but after sitting for a while, the plane had to return to the gate to have a generator inspected. After deplaning and then reboarding, we eventually took off around 3:30 pm. It was explained to the passengers that because the plane was using a backup generator, additional fuel was needed and the flight would take longer than originally scheduled. We were originally supposed to arrive at JFK at 9:32 pm but instead, arrived at midnight. Unfortunately, I was exhausted for the funeral I attended the next morning. As a passenger, I have always expected that the plane will be in good mechanical order and that all parts will function as expected. I'm not entirely certain that if I fly Jet Blue in the future, that I will have the same level of confidence that I had become accustomed to. Thanks for the opportunity to provide this feedback. Kathy Nigro

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 worst seat in any business class. Food are worst then economy class.

No food on 4.5 hour flight, wi-fi did not work. Terrible experience for a long haul flight.

Multiple delays and made us miss the connecting flight and lost our bags

Little communication with passengers after sitting over 1 hour for a maintenance issue Then we had to deplane- no crew communication Poor gate information after deplaned WiFi would not connect AT ALL

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.

More options for your flight from San Francisco to Saint Lucia

Complete your trip to Saint Lucia with a hotel stay or car rental