What is the cheapest day to fly from San Francisco to Saint Thomas Island?

Travelers seeking maximum savings on their San Francisco to Saint Thomas Island flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from San Francisco to Saint Thomas Island?

Consider American Airlines, Delta or United Airlines when booking your flight. These represent the most popular airlines when flying from San Francisco to Saint Thomas Island.

What is the cheapest day to fly round-trip from San Francisco to Saint Thomas Island?

Flying to your destination on a Thursday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Saint Thomas Island. Check prices with Cheapflights to find a great deal for your trip.

How far in advance should I book a flight from San Francisco to Saint Thomas Island?

Travelers have found it’s best to book a flight 43 days in advance to save up to 57% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 43 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from San Francisco to Saint Thomas Island 1-2 weeks in advance for as low as $643, or $1,009 for flights within the next 24 hours.

What is the cheapest month to fly from San Francisco to Saint Thomas Island?

The best pricing can be found in the month of September. Prices to Saint Thomas Island from San Francisco average $812. You can even find prices in September for less than $812, as users have found deals to Saint Thomas Island from as low as $577. The month of December appears to be one of the more expensive times to travel to Saint Thomas Island from San Francisco. Flying in the targeted month can save you up to 46%.

How can I find direct flights from San Francisco to Saint Thomas Island?

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

Can I find deals for business class flights from San Francisco to Saint Thomas Island?

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

$484+ Flights from San Francisco to Saint Thomas Island

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1. Tell us where you want to go

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Cheapflights Tip: The best prices from San Francisco to Saint Thomas Island Cyril E King are usually found in September or January, booked 86 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from San Francisco to Saint Thomas Island

Round-trip from	$484 (Frontier)
Popular in	December
Cheapest in	September
Average price	$739

From San Francisco to Saint Thomas Island Cyril E King

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($45 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Find flight deals from San Francisco to Saint Thomas Island

Cheapest flights from San Francisco to Saint Thomas Island
Explore the most affordable flight options available from San Francisco to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Thu 6/268:53 pmSFO - STT

2 stops16h 34mFrontier

Mon 6/305:12 pmSTT - SFO

2 stops20h 07mFrontier

Deal found 6/11

$484

Thu 6/268:53 pmSFO - STT

1 stop14h 05mMultiple Airlines

Thu 7/33:03 pmSTT - SFO

1 stop22h 16mMultiple Airlines

Deal found 6/11

$574

Wed 9/1011:58 pmSFO - STT

1 stop13h 02mAmerican Airlines

Mon 9/225:10 pmSTT - SFO

2 stops19h 14mAmerican Airlines

Deal found 6/11

$609

Tue 7/84:33 pmSFO - STT

2 stops20h 10mUnited Airlines

Wed 7/164:45 pmSTT - SFO

1 stop11h 12mUnited Airlines

Deal found 6/11

$647

Fri 7/411:59 pmSFO - STT

1 stop13h 08mDelta

Thu 7/174:10 pmSTT - SFO

1 stop12h 25mDelta

Deal found 6/11

$775

Best flights from San Francisco to Saint Thomas Island
Discover carefully curated flight deals from San Francisco to Saint Thomas Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Thu 6/268:53 pmSFO - STT

2 stops16h 34mFrontier

Mon 6/305:12 pmSTT - SFO

2 stops20h 07mFrontier

Deal found 6/11

$484

Thu 6/268:53 pmSFO - STT

1 stop14h 05mMultiple Airlines

Thu 7/33:03 pmSTT - SFO

1 stop22h 16mMultiple Airlines

Deal found 6/11

$574

Wed 9/1011:58 pmSFO - STT

1 stop13h 02mAmerican Airlines

Mon 9/225:10 pmSTT - SFO

2 stops19h 14mAmerican Airlines

Deal found 6/11

$609

Tue 7/84:33 pmSFO - STT

2 stops20h 10mUnited Airlines

Wed 7/164:45 pmSTT - SFO

1 stop11h 12mUnited Airlines

Deal found 6/11

$647

Fri 7/411:59 pmSFO - STT

1 stop13h 08mDelta

Thu 7/174:10 pmSTT - SFO

1 stop12h 25mDelta

Deal found 6/11

$775

Last-minute flights from San Francisco to Saint Thomas Island
Discover last-minute flight deals from San Francisco to Saint Thomas Island. Data last updated June 12, 2025 and is based on user searches.

Fri 6/2012:29 pmSFO - STT

3 stops24h 05mMultiple Airlines

Thu 6/2610:47 amSTT - SFO

2 stops27h 57mMultiple Airlines

Deal found 6/11

$1,012

Fri 6/2011:50 pmSFO - STT

1 stop13h 05mAmerican Airlines

Thu 6/263:42 pmSTT - SFO

1 stop10h 14mAmerican Airlines

Deal found 6/11

$1,054

Sun 6/228:53 pmSFO - STT

2 stops16h 34mFrontier

Mon 6/305:12 pmSTT - SFO

2 stops20h 07mFrontier

Deal found 6/12

$566

Sun 6/2212:43 amSFO - STT

1 stop12h 00mUnited Airlines

Tue 7/14:45 pmSTT - SFO

1 stop11h 12mUnited Airlines

Deal found 6/12

$969

Thu 6/268:53 pmSFO - STT

2 stops16h 34mFrontier

Mon 6/305:12 pmSTT - SFO

2 stops20h 07mFrontier

Deal found 6/11

$484

Thu 6/268:53 pmSFO - STT

1 stop14h 05mMultiple Airlines

Thu 7/33:03 pmSTT - SFO

1 stop22h 16mMultiple Airlines

Deal found 6/11

$574

Fri 7/411:59 pmSFO - STT

1 stop13h 08mDelta

Thu 7/174:10 pmSTT - SFO

1 stop12h 25mDelta

Deal found 6/11

$775

Tue 7/84:33 pmSFO - STT

2 stops20h 10mUnited Airlines

Wed 7/164:45 pmSTT - SFO

1 stop11h 12mUnited Airlines

Deal found 6/11

$647

Wed 7/3011:59 pmSFO - STT

2 stops12h 56mAmerican Airlines

Tue 8/51:53 pmSTT - SFO

1 stop11h 57mAmerican Airlines

Deal found 6/10

$609

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoSaint Thomas Island

SFO - STT

SFOSTT

San Francisco

Thu 6/26

8:53 pm-4:27 pm

2 stops16h 34m

Saint Thomas Island Cyril E King

Mon 6/30

5:12 pm-10:19 am

2 stops20h 07m

$484

San FranciscoSaint Thomas Island

SFO - STT

SFOSTT

San Francisco

Thu 6/26

8:53 pm-1:58 pm

1 stop14h 05m

Saint Thomas Island Cyril E King

Thu 7/3

3:03 pm-10:19 am

1 stop22h 16m

$574

San FranciscoSaint Thomas Island

SFO - STT

SFOSTT

San Francisco

Wed 9/10

11:58 pm-4:00 pm

1 stop13h 02m

Saint Thomas Island Cyril E King

Mon 9/22

5:10 pm-9:24 am

2 stops19h 14m

$609

San FranciscoSaint Thomas Island

SFO - STT

SFOSTT

San Francisco

Tue 7/8

4:33 pm-3:43 pm

2 stops20h 10m

Saint Thomas Island Cyril E King

Wed 7/16

4:45 pm-12:57 am

1 stop11h 12m

$647

San FranciscoSaint Thomas Island

SFO - STT

SFOSTT

San Francisco

Fri 7/4

11:59 pm-4:07 pm

1 stop13h 08m

Saint Thomas Island Cyril E King

Thu 7/17

4:10 pm-1:35 am

1 stop12h 25m

$775

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from San Francisco to Saint Thomas Island

Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island 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 Saint Thomas Island

How far ahead should I book a flight from San Francisco to Saint Thomas Island?

Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Saint Thomas Island. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Francisco to Saint Thomas Island?

Currently, September is the cheapest month in which you can book a flight from San Francisco to Saint Thomas Island (average of $433). Flying from San Francisco to Saint Thomas Island in June is currently the most expensive (average of $650). 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 STT?

When flying from San Francisco to Saint Thomas Island, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 26% versus a flight at noon.

Reviews of airlines servicing Saint Thomas Island

Read through reviews of airlines operating flights from San Francisco to Saint Thomas Island, such as Delta, United Airlines and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,950 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Frontier

5.9

Fair

3,295 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from San Francisco to Saint Thomas Island round-trip?
Currently priced at $484, Frontier will fly you from San Francisco to Saint Thomas Island and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $609 and $647, respectively. You may be able to fly from San Francisco to Saint Thomas Island for 40% less than the average price by searching for these airlines.
Can I find deals for flights from San Francisco to Saint Thomas Island that include hotel bookings?
Yes. In addition to deals on San Francisco to Saint Thomas Island flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Francisco to Saint Thomas Island?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Saint Thomas Island.
Can I find deals for business class flights from San Francisco to Saint Thomas Island?
Yes. Cheapflights offers flight deals from San Francisco to Saint Thomas Island 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 Saint Thomas Island?
Currently, September is the cheapest month in which you can book a flight from San Francisco to Saint Thomas Island (average of $433). Flying from San Francisco to Saint Thomas Island in June is currently the most expensive (average of $650). 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

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Alternative routes for San Francisco to Saint Thomas Island

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Top 3 airlines flying from San Francisco to Saint Thomas Island

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$587	Average$827	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$634	Average$819	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$643	Average$993	FlexibilityNo cancel fee	On-timeN/A

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$484+ Cheap flights from San Francisco (SFO) to Saint Thomas Island (STT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Francisco to Saint Thomas Island with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from San Francisco to Saint Thomas Island Cyril E King are usually found in September or January, booked 86 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from San Francisco to Saint Thomas Island

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from San Francisco to Saint Thomas Island

Cheapest flights from San Francisco to Saint Thomas IslandExplore the most affordable flight options available from San Francisco to Saint Thomas Island. 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 Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Saint Thomas Island that are best for you.

Best time to book a flight from San Francisco to Saint Thomas Island

Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island from San Francisco with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Saint Thomas Island

How far ahead should I book a flight from San Francisco to Saint Thomas Island?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Saint Thomas Island. Price data was last updated on June 9, 2025.

What is the cheapest month to book a flight from San Francisco to Saint Thomas Island?

What is the cheapest time of day to fly from SFO to STT?

Find hourly flight availability from San Francisco to Saint Thomas Island. 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.

Reviews of airlines servicing Saint Thomas Island

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Saint Thomas Island. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from San Francisco to Saint Thomas Island round-trip?

Can I find deals for flights from San Francisco to Saint Thomas Island that include hotel bookings?

How can I find direct flights from San Francisco to Saint Thomas Island?

Can I find deals for business class flights from San Francisco to Saint Thomas Island?

What is the cheapest month to book a flight from San Francisco to Saint Thomas Island?

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Top 3 airlines flying from San Francisco to Saint Thomas Island

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Cheapest flights from San Francisco to Saint Thomas Island
Explore the most affordable flight options available from San Francisco to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.