$443 Find Cheap Flights from San Antonio to Saint Lucia - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals
Booking Insights

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

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

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

The cheapest fare from San Antonio to Saint Lucia in the last week was $731 round-trip, to Castries Hewanorra (UVF).

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

All flights from San Antonio to Saint Lucia arrive at Castries Hewanorra (UVF). On average, round-trip fares are around $1,094.

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

Tuesday tends to be the cheapest day to fly from San Antonio to Saint Lucia, while Saturday is the most expensive. Fares run about 61% higher that day, based on the past 12 months of KAYAK data.

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

Data from the past 12 months shows it's cheapest to fly to Saint Lucia during the evening with average prices of $901. The morning is the most expensive time to fly, with average prices of $1,097.

Key details for San Antonio to Saint Lucia flights

Low season

May

Cheapest flight

$443
Beat the crowds with an average 71% drop in travelers.
The most popular month to fly with an average 43% increase in travelers.
One-way flight from San Antonio to Castries

Your San Antonio 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 Antonio to Saint Lucia?

    Yes. Fares from San Antonio to Saint Lucia are low right now. As a rule of thumb, a round-trip under $818 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

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

    Over the past 12 months, round-trip fares from San Antonio to Saint Lucia have ranged from $818 to $1,349.

  • 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 Antonio to Saint Lucia?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from San Antonio to Saint Lucia. One-stop options include American Airlines and Delta.

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

    On flights from San Antonio to Saint Lucia you can only book Economy Class.

Your guide to booking San Antonio 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 January when flights are typically cheapest and avoid March when prices are at their highest.
  • Flying on Tuesday is usually the cheapest. Flights on Saturday cost about 61% more on average, so being flexible with your travel dates could help you save.
  • 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 airline flying from San Antonio to Saint Lucia

 
Need help choosing which airline to fly with from San Antonio 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 8697 reviews
7.8Comfort
8.5Crew
7.8Entertainment
7.2Food
8.1Boarding
Airline reviews

Great as one can be for a one connection 6 hour flight

10.0 ExcellentEric, Nov 2026
Read more Delta reviews

Great as one can be for a one connection 6 hour flight

On time, quick boarding, so nice of them to honor active and retired military with early boarding. Attendants were nice . Plane was clean. A bit crowded like all flights.

Everything was great except the fact that catering did not restock the flight from ATL to GRB and we were only offered water.

The WiFi on the plane was out. I also thought movie options were lacking.

These Delta 717 jets are ancient. No entertainment and you have to pay for WiFi that barely works and goes in and out the whole flight. Delta should be ashamed flying this garbage.

My seat was changed without my consent. It wasn’t a major deal but annoying.

It was delayed over an hour and a lot of announcements disrupting movie.

Delta has joint the nickel and diming airlines. The experience is getting worst by the day. 1,000,000 miles for a trip to Asia in Business Class where I got the same thing for just under 90,000 miles through an Asian airline. Where is Richard Anderson? Please come back!

Everything went smooth from check in, thru TSA, then boarding, and a smooth flight to ATL.

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

More options for your flight from San Antonio to Saint Lucia

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