$234 Cheap Flights from San Francisco (SFO) to St. Thomas (STT)

View $234 flight on Mon, May 19, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Cyril E. King Airport (STT)

Find available prices by choosing your travel dates.

Cheap Flights from San Francisco to St. Thomas (SFO-STT)

Prices were available within the past 7 days and start at $234 for one-way flights and $451 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Mon, May 19 - Wed, Jun 4
SFO
San Francisco
STT
St. Thomas
$451 Roundtrip, found 6 hours ago
$451
Roundtrip
found 6 hours ago
Select JetBlue Airways flight, departing Mon, May 19 from San Francisco to St. Thomas, returning Wed, Jun 4, priced at $451 found 6 hours ago
JetBlue Airways
Sun, May 25 - Wed, Jun 4
SFO
San Francisco
STT
St. Thomas
$456 Roundtrip, found 5 hours ago
$456
Roundtrip
found 5 hours ago
Select JetBlue Airways flight, departing Sun, May 25 from San Francisco to St. Thomas, returning Wed, Jun 4, priced at $456 found 5 hours ago
JetBlue Airways
Sun, May 25 - Thu, Jun 5
SFO
San Francisco
STT
St. Thomas
$461 Roundtrip, found 5 hours ago
$461
Roundtrip
found 5 hours ago
Select JetBlue Airways flight, departing Sun, May 25 from San Francisco to St. Thomas, returning Thu, Jun 5, priced at $461 found 5 hours ago
JetBlue Airways
Sun, May 25 - Tue, May 27
SFO
San Francisco
STT
St. Thomas
$476 Roundtrip, found 6 hours ago
$476
Roundtrip
found 6 hours ago
Select JetBlue Airways flight, departing Sun, May 25 from San Francisco to St. Thomas, returning Tue, May 27, priced at $476 found 6 hours ago
JetBlue Airways
Mon, May 19 - Sat, Jun 7
SFO
San Francisco
STT
St. Thomas
$482 Roundtrip, found 6 hours ago
$482
Roundtrip
found 6 hours ago
Select JetBlue Airways flight, departing Mon, May 19 from San Francisco to St. Thomas, returning Sat, Jun 7, priced at $482 found 6 hours ago
JetBlue Airways
Sun, May 25 - Sat, Jun 7
SFO
San Francisco
STT
St. Thomas
$487 Roundtrip, found 6 hours ago
$487
Roundtrip
found 6 hours ago
Select JetBlue Airways flight, departing Sun, May 25 from San Francisco to St. Thomas, returning Sat, Jun 7, priced at $487 found 6 hours ago
JetBlue Airways
Sun, May 18 - Fri, May 30
SFO
San Francisco
STT
St. Thomas
$500 Roundtrip, found 1 day ago
$500
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Sun, May 18 from San Francisco to St. Thomas, returning Fri, May 30, priced at $500 found 1 day ago
United
Thu, May 29 - Thu, Jun 5
SFO
San Francisco
STT
St. Thomas
$541 Roundtrip, found 21 hours ago
$541
Roundtrip
found 21 hours ago
Select United flight, departing Thu, May 29 from San Francisco to St. Thomas, returning Thu, Jun 5, priced at $541 found 21 hours ago
American Airlines
Mon, Jun 9 - Mon, Jun 16
SFO
San Francisco
STT
St. Thomas
$609 Roundtrip, just found
$609
Roundtrip
just found
Select American Airlines flight, departing Mon, Jun 9 from San Francisco to St. Thomas, returning Mon, Jun 16, priced at $609 just found
Delta
Thu, Jun 26 - Thu, Jul 3
SFO
San Francisco
STT
St. Thomas
$725 Roundtrip, just found
$725
Roundtrip
just found
Select Delta flight, departing Thu, Jun 26 from San Francisco to St. Thomas, returning Thu, Jul 3, priced at $725 just found
Flights from San Francisco (SFO) to St. Thomas (STT)
Origin airport
San Francisco Intl.
Destination airport
Cyril E. King
Airlines serving
American Airlines, Delta, JetBlue Airways, United
Roundtrip price
$451
Distance
3685 mi

San Francisco to St. Thomas Flights

The cheapest times to fly from San Francisco to St. Thomas

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to St. Thomas are during the month of May. You can find some of the cheapest flights from San Francisco to St. Thomas with Expedia's search tool and vast selection of airlines.

The best time to book a flight from San Francisco to St. Thomas

Sunday is one of the best days to book for cheap flights from San Francisco to St. Thomas: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from San Francisco to St. Thomas

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to St. Thomas in 2025. You can also book with separate airlines for your outbound and return journeys, from $234 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to St. Thomas flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to St. Thomas airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Cyril E. King Airport (STT) cost?
Discover the latest flight deals from SFO to STT by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SFO to STT?
The cheapest flights from SFO to STT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SFO to STT?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from SFO to STT. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from San Francisco Intl. Airport (SFO) to Cyril E. King Airport (STT)?
You’ll need to catch a flight with a layover if you’re traveling from San Francisco Intl. Airport (SFO) to Cyril E. King Airport (STT). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from SFO to STT?
Usually you’ll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Cyril E. King Airport (STT)?
Book a flight from San Francisco Intl. Airport (SFO) to Cyril E. King Airport (STT) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Cyril E. King Airport (STT) last-minute?
Waiting until just before your trip to book a ticket from SFO to STT often results in higher prices. While you may find some last-minute discounts, there’s no guarantee. Be flexible with your itinerary to boost your chances of scoring a bargain.
Is it cheaper to book a SFO to STT flight and hotel package?
Compared with arranging hotels and flights separately, booking a SFO to STT flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one convenient place takes the hassle out of travel planning. Just secure your flights and select from our wide range of hotels, then personalize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Cyril E. King Airport (STT)?
You can usually cancel or reschedule your SFO to STT flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline’s policies in your itinerary to see what changes are allowed and whether any costs are involved. You’ll also find further details on our Customer Service portal.

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*Available to One Key members.