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Castries

$374+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SLU
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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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 August 14, 2025.

Round-trip from

$756
(Trip.com)

One-way from

$374
(Kiwi.com)

Popular in

January

Cheapest in

October

Average price

$652
From San Francisco to Castries George F. L. Charle
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One-way flight from San Francisco to Castries George F. L. Charle
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Highest demand for flights based on searches. 9% potential increase in price ($76 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from San Francisco to Castries

Cheapest flights from San Francisco to Castries
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 August 14, 2025.

This Trip.com deal was found by Cheapflights users on 8/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/122:20 pmSFO - SLU
3 stops41h 10mMultiple Airlines
Sun 11/165:00 amSLU - SFO
2 stops47h 06mMultiple Airlines
Deal found 8/12$756
This Trip.com deal was found by Cheapflights users on 8/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2210:59 pmSFO - SLU
2 stops31h 31mMultiple Airlines
Fri 9/2612:15 pmSLU - SFO
2 stops38h 34mMultiple Airlines
Deal found 8/12$761
This Trip.com deal was found by Cheapflights users on 8/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/310:43 pmSFO - SLU
2 stops30h 47mMultiple Airlines
Fri 11/712:15 pmSLU - SFO
2 stops29h 15mMultiple Airlines
Deal found 8/12$771
This Trip.com deal was found by Cheapflights users on 8/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:50 amSFO - SLU
2 stops23h 55mMultiple Airlines
Wed 9/2410:15 amSLU - SFO
2 stops40h 34mMultiple Airlines
Deal found 8/12$834
This Mytrip deal was found by Cheapflights users on 8/12. 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 10/311:00 pmSFO - SLU
3 stops27h 00mMultiple Airlines
Sat 11/812:35 pmSLU - SFO
2 stops26h 19mMultiple Airlines
Deal found 8/12$1,353
This Mytrip deal was found by Cheapflights users on 8/12. 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.
Thu 9/111:45 pmSFO - SLU
2 stops18h 45mMultiple Airlines
Thu 9/1812:35 pmSLU - SFO
2 stops24h 58mMultiple Airlines
Deal found 8/12$2,064
This Air Caraïbes deal was found by Cheapflights users on 8/13. 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 Air Caraïbes is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:55 pmSFO - SLU
2 stops62h 50mAir Caraïbes
Sat 12/277:30 amSLU - SFO
2 stops40h 40mAir Caraïbes
Deal found 8/13$2,862
This Expedia deal was found by Cheapflights users on 8/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/212:30 pmSFO - SLU
3 stops41h 15mMultiple Airlines
Mon 12/14:35 pmSLU - SFO
2 stops50h 40mMultiple Airlines
Deal found 8/13$4,968

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 August 14, 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 11/12

2:20 pm-11:30 am

3 stops41h 10m

Castries George F. L. Charle

Sun 11/16

5:00 am-12:06 am

2 stops47h 06m

$756

San FranciscoCastries

SFO - SLU

SFOSLU

San Francisco

Mon 9/22

10:59 pm-9:30 am

2 stops31h 31m

Castries George F. L. Charle

Fri 9/26

12:15 pm-11:49 pm

2 stops38h 34m

$761

San FranciscoCastries

SFO - SLU

SFOSLU

San Francisco

Mon 11/3

10:43 pm-9:30 am

2 stops30h 47m

Castries George F. L. Charle

Fri 11/7

12:15 pm-1:30 pm

2 stops29h 15m

$771

San FranciscoCastries

SFO - SLU

SFOSLU

San Francisco

Sat 9/20

8:50 am-11:45 am

2 stops23h 55m

Castries George F. L. Charle

Wed 9/24

10:15 am-11:49 pm

2 stops40h 34m

$834

San FranciscoCastries

SFO - SLU

SFOSLU

San Francisco

Fri 10/31

1:00 pm-7:00 pm

3 stops27h 00m

Castries George F. L. Charle

Sat 11/8

12:35 pm-10:54 am

2 stops26h 19m

$1,353

San FranciscoCastries

SFO - SLU

SFOSLU

San Francisco

Thu 9/11

1:45 pm-11:30 am

2 stops18h 45m

Castries George F. L. Charle

Thu 9/18

12:35 pm-10:33 am

2 stops24h 58m

$2,064

San FranciscoCastries

SFO - SLU

SFOSLU

San Francisco

Tue 1/13

10:30 am-1:10 pm

2 stops46h 40m

$374

San FranciscoCastries

SFO - SLU

SFOSLU

San Francisco

Sun 1/11

10:30 am-3:50 pm

2 stops25h 20m

$391

San FranciscoCastries

SFO - SLU

SFOSLU

San Francisco

Sun 1/18

7:55 am-3:50 pm

2 stops27h 55m

$391

San FranciscoCastries

SFO - SLU

SFOSLU

San Francisco

Fri 12/26

6:20 am-10:10 pm

3 stops35h 50m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 11 results
1
2

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 August 14, 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.

Reviews of airlines servicing Castries

Get insights into the airlines that provide service to Castries. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Castries. Reviews last updated August 14, 2025.
See what other customers who have flown with American Airlines from San Francisco to Castries have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Boarding

7.5

Crew

8.0

Comfort

7.2

Food

6.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Entertainment

6.9

Boarding

7.5

Crew

8.0

Comfort

7.2

Food

6.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.

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.

  • What is the cheapest airline to fly from San Francisco to Castries round-trip?

    According to our current data, American Airlines ($485), offers the cheapest pricing from San Francisco to Castries. American Airlines is 36% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from San Francisco to Castries that include hotel bookings?

    Yes. In addition to deals on San Francisco to Castries flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Castries?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Castries.

  • Can I find deals for business class flights from San Francisco to Castries?

    Yes. Cheapflights offers flight deals from San Francisco to Castries by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

See more FAQs

Traveling to a place near Castries?

Book flights to Castries if you plan to visit one of these locations
Gros Islet
Rodney Bay
Marigot Bay

Browse thousands of different options on Cheapflights for your next trip

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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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$485Average$735FlexibilityNo cancel feeOn-time71%

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