$527+ Cheap flights from San Francisco (SFO) to Castries (SLU)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SLU
Jun 17 — Jun 241
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Francisco to Castries
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Castries (SLU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.
Round-trip from | $1,460 (Mytrip) |
|---|---|
One-way from | $527 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $1,161 |
Find flight deals from San Francisco to Castries
Cheapest flights from San Francisco to CastriesExplore the most affordable flight options available from San Francisco to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from San Francisco to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/187:40 pmSFO - SLU
3 stops20h 20mMultiple Airlines
Sun 7/2712:35 pmSLU - SFO
3 stops35h 50mMultiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,460
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Castries that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from San Francisco to Castries that are best for you.
Fly from
San Francisco
Fly to
Castries
Route
Depart
Return
Price
San FranciscoCastries
SFO - SLU
SFOSLU
San Francisco
Fri 7/18
7:40 pm-7:00 pm
3 stops20h 20m
Castries George F. L. Charle
Sun 7/27
12:35 pm-9:25 pm
3 stops35h 50m
$1,460
San FranciscoCastries
SFO - SLU
SFOSLU
San Francisco
Fri 8/1
9:05 am-10:10 pm
3 stops34h 05m
$527
Best time to book a flight from San Francisco to Castries
Have a flexible travel schedule? Discover the best time to fly to Castries from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Castries
What is the cheapest month to book a flight from San Francisco to Castries?
Currently, August is the cheapest month in which you can book a flight from San Francisco to Castries (average of $525). Flying from San Francisco to Castries in July is currently the most expensive (average of $767). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SFO to SLU?
Find hourly flight availability from San Francisco to Castries. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.
Unlike in the morning, when flights are generally more expensive, you can save up to 39% on flights from San Francisco to Castries by exploring options for tickets at noon.
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Castries. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsGros Islet
Marigot Bay
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Alternative routes for San Francisco to Castries
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from San Francisco to Castries
Discover the top airline that operate flights from San Francisco to Castries. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$485 | Average$735 | FlexibilityNo cancel fee | On-time71% |