Cheap Flights from San Francisco to Castries from $483

Frequently Asked Questions

• What are the cheapest flights from San Francisco to Castries (SFO-SLU)?

  Based on Trip.com data, Delta Air Lines offers one-way fares as low as $483 on Cheapest nonstop routes (e.g. SFO to UVF on Mon, Oct 12), while Air Canada offers Cheapest nonstop round-trips from $736 departing on Mon, Nov 16 and returning on Fri, Nov 20.

• Which airlines offer flights from San Francisco to Castries?

  At the moment, several airlines serve connecting flights from San Francisco to Castries, including: Delta Air Lines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

• When is the best time to book flights from San Francisco to Castries?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Francisco to Castries is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from San Francisco to Castries?

  To find best deals on flights from San Francisco to Castries, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Oct 12, with one-way flights priced at just $483.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Delta Air Lines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Castries travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from San Francisco (SFO) to Castries (SLU) the cheapest?

  The cheapest months to fly from San Francisco to Castries is August, when demand for travel is lower.

• Which upcoming date is cheapest to fly from San Francisco to Castries on?

  After crunching the numbers on our October flight calendar, it's currently cheapest to fly from San Francisco to Castries on October 24, 2026 with Air Canada, with prices starting at $406.

• Which airports can I fly into Castries from San Francisco?

  You can arrive at any of the following airports in Castries: Hewanorra International Airport (UVF), and George F. L. Charles Airport (SLU). Flights from San Francisco International Airport to Hewanorra International Airport (SFO-UVF) are by far the most popular option for this route.

• Is there any time difference between San Francisco and Castries?

  The time difference between Castries and San Francisco is 4h.

• How do I change or cancel my ticket from San Francisco to Castries?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from San Francisco to Castries?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from San Francisco to Castries is $481. Fares vary by travel date, airline and availability.

• How do I book flights from San Francisco to Castries on Trip.com?

  Enter San Francisco and Castries, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.