$154 Cheap Flights from San Juan (SJU) to San Francisco (SFO)

View $154 flight on Sun, May 11, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from San Juan to San Francisco (SJU-SFO)

Prices were available within the past 7 days and start at $154 for one-way flights and $308 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, May 8 - Sat, May 10
SJU
San Juan
SFO
San Francisco
$308 Roundtrip, found 1 hour ago
$308
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, May 8 from San Juan to San Francisco, returning Sat, May 10, priced at $308 found 1 hour ago
JetBlue Airways
Tue, May 13 - Sat, May 17
SJU
San Juan
SFO
San Francisco
$318 Roundtrip, found 2 days ago
$318
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Tue, May 13 from San Juan to San Francisco, returning Sat, May 17, priced at $318 found 2 days ago
Frontier Airlines
Wed, May 7 - Fri, May 9
SJU
San Juan
SFO
San Francisco
$318 Roundtrip, found 1 hour ago
$318
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, May 7 from San Juan to San Francisco, returning Fri, May 9, priced at $318 found 1 hour ago
JetBlue Airways
Thu, May 29 - Sun, Jun 8
SJU
San Juan
SFO
San Francisco
$325 Roundtrip, found 10 hours ago
$325
Roundtrip
found 10 hours ago
Select JetBlue Airways flight, departing Thu, May 29 from San Juan to San Francisco, returning Sun, Jun 8, priced at $325 found 10 hours ago
JetBlue Airways
Fri, May 30 - Sun, Jun 8
SJU
San Juan
SFO
San Francisco
$328 Roundtrip, found 8 hours ago
$328
Roundtrip
found 8 hours ago
Select JetBlue Airways flight, departing Fri, May 30 from San Juan to San Francisco, returning Sun, Jun 8, priced at $328 found 8 hours ago
Frontier Airlines
Sun, May 4 - Thu, May 8
SJU
San Juan
SFO
San Francisco
$328 Roundtrip, just found
$328
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, May 4 from San Juan to San Francisco, returning Thu, May 8, priced at $328 just found
Frontier Airlines
Tue, Apr 29 - Thu, May 8
SJU
San Juan
SFO
San Francisco
$331 Roundtrip, found 1 day ago
$331
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Apr 29 from San Juan to San Francisco, returning Thu, May 8, priced at $331 found 1 day ago
American Airlines
Fri, May 30 - Sat, May 31
SJU
San Juan
SFO
San Francisco
$344 Roundtrip, found 3 hours ago
$344
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, May 30 from San Juan to San Francisco, returning Sat, May 31, priced at $344 found 3 hours ago
United
Mon, Nov 3 - Mon, Nov 17
SJU
San Juan
SFO
San Francisco
$345 Roundtrip, found 1 day ago
$345
Roundtrip
found 1 day ago
Select United flight, departing Mon, Nov 3 from San Juan to San Francisco, returning Mon, Nov 17, priced at $345 found 1 day ago
Delta
Fri, Sep 5 - Tue, Sep 9
SJU
San Juan
SFO
San Francisco
$349 Roundtrip, just found
$349
Roundtrip
just found
Select Delta flight, departing Fri, Sep 5 from San Juan to San Francisco, returning Tue, Sep 9, priced at $349 just found
Flights from San Juan (SJU) to San Francisco (SFO)
Origin airport
Luis Munoz Marin Intl.
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$308
Distance
3625 mi

San Juan to San Francisco Flights

The cheapest times to fly from San Juan to San Francisco

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 Juan to San Francisco are during the month of May. You can find some of the cheapest flights from San Juan to San Francisco with Expedia's search tool and vast selection of airlines.

The best time to book a flight from San Juan to San Francisco

Sunday is one of the best days to book for cheap flights from San Juan to San Francisco: 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 Juan to San Francisco

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 Juan to San Francisco in 2025. You can also book with separate airlines for your outbound and return journeys, from $154 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 Juan to San Francisco 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 Juan to San Francisco 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 Luis Munoz Marin Intl. Airport (SJU) to San Francisco Intl. Airport (SFO) cost?
Discover the latest flight deals from SJU to SFO 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 SJU to SFO?
The cheapest flights from SJU to SFO 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 SJU to SFO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from SJU to SFO. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Luis Munoz Marin Intl. Airport (SJU) to San Francisco Intl. Airport (SFO)?
You’ll have to catch a flight with a layover if you’re traveling from Luis Munoz Marin Intl. Airport (SJU) to San Francisco Intl. Airport (SFO). Direct flights don’t operate daily on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from SJU to SFO?
You’ll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Luis Munoz Marin Intl. Airport (SJU) to San Francisco Intl. Airport (SFO)?
To reach San Francisco Intl. Airport (SFO) on schedule, pick a flight that leaves Luis Munoz Marin Intl. Airport (SJU) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Luis Munoz Marin Intl. Airport (SJU) to San Francisco Intl. Airport (SFO) last-minute?
Booking your plane ticket from SJU to SFO right before your trip is usually more expensive. But if there’s some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a SJU to SFO flight and hotel package?
You can save money by securing a SJU to SFO flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage everything in one place. After choosing your ideal flights and accommodations, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Luis Munoz Marin Intl. Airport (SJU) to San Francisco Intl. Airport (SFO)?
It’s usually possible to reschedule or cancel your SJU to SFO flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find more information on our Customer Service portal.

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*Available to One Key members.