$646+ 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SLU
Apr 22 — Apr 291
1 adult, Economy
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Find cheap flights from San Francisco to Castries with Cheapflights
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 April 17, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $1,108 (Mytrip) |
One-way from | $646 (Mytrip) |
Popular in | June |
Cheapest in | October |
Average price | $917 |
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 April 17, 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 April 17, 2025.
This Mytrip deal was found by Cheapflights users on 4/16. 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.
Wed 6/1810:15 amSFO - SLU
3 stops29h 45mMultiple Airlines
Mon 6/234:35 pmSLU - SFO
3 stops27h 39mMultiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$1,101
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 April 17, 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
Wed 6/18
10:15 am-7:00 pm
3 stops29h 45m
Castries George F. L. Charle
Mon 6/23
4:35 pm-5:14 pm
3 stops27h 39m
$1,101
San FranciscoCastries
SFO - SLU
SFOSLU
San Francisco
Sun 6/15
1:30 pm-3:50 pm
2 stops23h 20m
$646
Compare providers for flights from San Francisco to Castries
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Castries in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Castries flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on San Francisco-Castries flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from San Francisco-Castries flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Castries flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Castries flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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 April 17, 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
Rodney 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 April 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$521 | Average$780 | FlexibilityNo cancel fee | On-time71% |