$138 Find Cheap Flights from Puerto Rico to San Francisco - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Francisco departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flights from Puerto Rico to San Francisco

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Puerto Rico to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Puerto Rico to San Francisco

Wed, Sep 16 - Wed, Sep 23
Frontier Logo
6:30 am - 8:08 pmSJU  San Juan Luis Munoz Marin Intl-SFO San Francisco
16h 38m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
10:05 pm - 4:06 pmSFO  San Francisco-SJU San Juan Luis Munoz Marin Intl
15h 01m1 stop Atlanta Hartsfield-Jackson
$292Frontier
Wed, Sep 9 - Wed, Sep 16
Frontier Logo
6:30 am - 8:08 pmSJU  San Juan Luis Munoz Marin Intl-SFO San Francisco
16h 38m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
10:05 pm - 4:06 pmSFO  San Francisco-SJU San Juan Luis Munoz Marin Intl
15h 01m1 stop Atlanta Hartsfield-Jackson
$314Frontier
Sat, Oct 31 - Sat, Nov 7
JetBlue Logo
6:00 am - 4:46 pmSJU  San Juan Luis Munoz Marin Intl-SFO San Francisco
13h 46m1 stop Boston Logan Intl
JetBlue Logo
8:51 pm - 9:58 amSFO  San Francisco-SJU San Juan Luis Munoz Marin Intl
9h 07m1 stop Fort Lauderdale
$404JetBlue
Thu, Sep 17 - Sun, Sep 27
JetBlue Logo
2:32 pm - 11:17 pmSJU  San Juan Luis Munoz Marin Intl-SFO San Francisco
11h 45m1 stop Fort Lauderdale
JetBlue Logo
9:44 pm - 12:02 pmSFO  San Francisco-SJU San Juan Luis Munoz Marin Intl
11h 18m1 stop Boston Logan Intl
$404JetBlue
Tue, Oct 13 - Mon, Oct 26
American Airlines Logo
2:18 pm - 8:57 amSJU  San Juan Luis Munoz Marin Intl-SFO San Francisco
21h 39m2 stops Miami Los Angeles
American Airlines Logo
1:28 pm - 11:31 amSFO  San Francisco-SJU San Juan Luis Munoz Marin Intl
19h 03m2 stops Los Angeles Miami
$496American Airlines
Wed, Oct 14 - Thu, Oct 29
American Airlines Logo
6:20 am - 11:37 pmSJU  San Juan Luis Munoz Marin Intl-SFO San Francisco
20h 17m2 stops Miami Los Angeles
American Airlines Logo
4:07 pm - 11:20 amSFO  San Francisco-SJU San Juan Luis Munoz Marin Intl
16h 13m2 stops Los Angeles Charlotte Douglas
$496American Airlines
Thu, Oct 15 - Mon, Oct 26
Delta Logo
12:50 pm - 10:59 pmSJU  San Juan Luis Munoz Marin Intl-SFO San Francisco
13h 09m1 stop Atlanta Hartsfield-Jackson
Delta Logo
9:00 pm - 12:05 pmSFO  San Francisco-SJU San Juan Luis Munoz Marin Intl
12h 05m1 stop New York John F Kennedy Intl
$510Delta
Tue, Nov 17 - Sun, Dec 6
Delta Logo
7:15 am - 2:45 pmSJU  San Juan Luis Munoz Marin Intl-SFO San Francisco
11h 30m1 stop New York John F Kennedy Intl
Delta Logo
10:59 pm - 2:00 pmSFO  San Francisco-SJU San Juan Luis Munoz Marin Intl
11h 01m1 stop Detroit Metropolitan Wayne County
$510Delta
Sat, Sep 5 - Thu, Sep 10
United Airlines Logo
12:15 am - 10:18 amBQN  Aguadilla Borinquen-SFO San Francisco
13h 03m1 stop Newark
United Airlines Logo
6:15 am - 11:09 pmSFO  San Francisco-BQN Aguadilla Borinquen
13h 54m2 stops Denver Intl Newark
$562United Airlines
Sat, Sep 5 - Thu, Sep 10
United Airlines Logo
12:15 am - 11:20 amBQN  Aguadilla Borinquen-SFO San Francisco
14h 05m2 stops Newark Chicago O'Hare Intl
United Airlines Logo
6:15 am - 11:09 pmSFO  San Francisco-BQN Aguadilla Borinquen
13h 54m2 stops Denver Intl Newark
$562United Airlines
Booking Insights

KAYAK's insights & trends for flights to San Francisco

Get data-powered insights and trends for flights to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to San Francisco?

These are the best round-trip prices found by users searching on KAYAK in the last 5 days.

In the last 5 days, the cheapest flight deal to San Francisco was found on the route from San Juan, at $314 return. The most popular connection is from Aguadilla to San Francisco and KAYAK users have found round-trip deals for as low as $414 in the last 5 days.

What is the cheapest month to fly to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to San Francisco is May, where tickets cost $436 on average for return flights. On the other hand, the most expensive months are July and June, where the average cost of tickets from Puerto Rico is $591 and $573 respectively. For one-way flights, the best month to travel is February with an average price of $251.

How far in advance should I book a flight to San Francisco?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 6 weeks before departure, which saves you about 12% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low season

January

Cheapest flight

$138
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from San Juan to San Francisco

FAQs - booking San Francisco flights

  • What is the cheapest flight to San Francisco?

    In the last 5 days, the cheapest flight deal to San Francisco was found on the route from San Juan, at $314 return. The most popular connection is from Aguadilla to San Francisco and KAYAK users have found round-trip deals for as low as $414 in the last 5 days.

  • How far is San Francisco Airport from central San Francisco?

    San Francisco Airport is 11 miles from the center of San Francisco.

  • What is the name of San Francisco’s airport?

    San Francisco is served by San Francisco Airport, also commonly referred to as San Francisco or San Francisco Intl. The airport code is SFO.

  • How does KAYAK find such low prices on flights to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to San Francisco are there each week?

    Each week there are around 14,610 direct flights from within Puerto Rico to San Francisco. The most common day for departures is Sunday, with 19% of flights taking off on this day.

Top tips for finding cheap flights to San Francisco

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest San Francisco flight deals.

Reviews of the top 4 airlines serving from Puerto Rico to San Francisco

 
See real verified KAYAK customer reviews for airlines flying to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Puerto Rico to San Francisco. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8504 reviews
7.8Comfort
8.5Crew
8.1Boarding
7.2Food
7.8Entertainment
Airline reviews

The flight was done by SkyWest only WIFI no entertainment center are available on the CRJ

10.0 ExcellentChristian, Jul 2026
Read more Delta reviews

The flight was done by SkyWest only WIFI no entertainment center are available on the CRJ

Delta is always late. Ruined our first day of a short vacation. Timing is important. We pay to stay on an itinerary

We sat on the runway for over an hour before departure. That was unwelcome.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

Awful - both legs. The check in was awful, getting on the plane required walking down a spiral staircase (dangerous), then taking a bus about 5 miles out from the terminal. The seat was broken (I was in business), there was no internet during the flight (both legs). The aircraft was very old. I saw rust in some place, tape holding things up in the bathroom. This was an unacceptable experience for such a long haul flight.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

the seat has a problem. the back had a hole.

The entire experience convinced my wife, Cathy, and me that traveling Polaris on United is the only way we’ll fly in the future. From check-in and baggage drop to the end of the 12-hour flight, the customer service was exceptional, with numerous staff members exemplifying the very best in care. On board, Andre, our primary crew chief, was sincerely friendly, a consummate professional, and, along with Freddy, one of his team members, truly among the best of the best. The captain even came through the cabin to chat with passengers—a wonderful personal touch, especially on such a long journey.

The SFO lounge closes at 12 midnight. My flight took off at 2AM

Flight be on time would be a good start. Then train your flight attendants to be attentive and friendly. This time they completely forgot my row for the measly snack! United, do better!

We boarded the plane and were about to take off when we were notified that the tires had to be checked. Upon inspection, they were found to need replacement, so the entire plane had to be deboarded. After we exited the plane, United staff forced us to stay in the gate area by posting "Do Not Exit" signs on the doors connecting the gate area to the terminal. Many of us had already rebooked our flights and had no checked bags, but they told us we could not leave. This seemed inappropriate to hold people under false pretenses. When the agent told us we could leave, I asked them to please take down the "Do Not Exit" signs, as they were misleading. The agent refused, and I told them that it didn't feel right to hold people like that.

There was a piece of plastic baked into my buttermilk biscuit! I have a pictures. The flight attendants in first class were really apologetic, and tried to rectify the situation. I I am very appreciative that they were able to give me some packets of pretzels and gummy bears. I understand they don't personally handle the food until warming it up so I know it wasn't their fault. I don't know whether it was a newer aircraft, or different food packaging, but I was happy that when the food was being warmed up - it didn't smell like plastic. Jokes on me with finding plastic in my food.

United was excellent. We had very good experience flying the carrier. Certainly. We will opt to fly them for sure. Lufthansa is out.

The seat that I got this time is really good.

Excellent flight. On time. Great staff. Clean and crisp cabin.

The Manila airport was under renovation so there was no business class lounge. The double security check was disorganized and the flight attendants were grouchy.

Our experience with American Airlines was extremely disappointing and honestly made an already exhausting international journey much worse. After flying all the way from Melbourne and dealing with significant jet lag, the American Airlines experience at LAX was the last thing we needed. The terminal and boarding area felt very old and uncomfortable, with little to no air conditioning and only old fans running in the area. Boarding was also through outdoor stairs rather than a jet bridge, which felt especially inconvenient after such a long journey. Even though we were traveling First Class, the onboard experience was surprisingly poor. There were no meaningful snack options, no decent coffee available to order, and the aircraft was so small that there was barely enough overhead space for carry-on luggage. The staff experience was also disappointing and lacked the warmth or attentiveness we had experienced on our international flights. To make matters worse, the flight departed late, extending an already very long travel day. Overall, the combination of the outdated terminal, uncomfortable boarding process, limited First Class service, small aircraft, poor staff experience, and delay made this an extremely unpleasant final leg of our journey. It significantly worsened our exhaustion and jet lag rather than making the connection home easier. Unfortunately, this experience was bad enough that I do not plan to travel with American Airlines again in the future.

Horrible. No AC. No Air inside the plane. We had to deplane twice! It is late almost 5 hrs in total. I almost passed out and about to call 911. I asked the crew to be honest and open the door. The lady next to me was lay down in the floor due to heat and no air inside the plane. I got headaches, can’t wait the replacement flight about midnight Dallas time. I end it up rebook for next day flight and stay overnight using my own pocket in a hotel nearby due to headaches and can’t breath. I still have a headache this morning. Still not decided yes how to file this issue to AA and/or FAA.

I could not ask for more. Great service and experience.

Initial flight had an engine overheat - returned to DFW. Had another plane ready, but crew timed out. Had to wait 5h for boarding. Fully boarded and pilot says plane is not flight worthy. Deplane and go to the other end of the terminal. Wait an hour to board third plane because the crew couldn’t leave the second plane because no wheelchairs were brought to remove passengers. Finally take off and there is no catering (in flight service) even in first class. Very much an AA failure.

The food was good. I almost didn't get a seat on the flight unless I agreed to sit in emergency exit.

The flight attendant was very polite and attentive. The food was good.

I had a comfortable and enjoyable experience. The entertainment options were plentiful, the food was appetizing, the snacks were tasty, and the staff was friendly, professional, and helpful.

Was put into a seat right behind the toilet that had no entertainment possible but did have plenty of leg room over noisy part of plane.

Flight: Started on time. Comfortable flight. Arrived on time. Crew: Very cordial and helpful. Drinks and snack was served with a smile. Overall enjoyed the trip. Regards, Hari Doss Chanchala Doss

Buying ticket from kayak instant booking was a huge mistake, never to be repeated again! The Kayak didn’t book the tickets directly, it handed it off to a third party Underpricer, that booked a code shared American Airlines flight operated by Cathay Pacific!! When managing the booking American Airlines would recognize the itinerary but wouldn’t let me do anything stating, the flight is operated by Cathay Pacific so go to their website. Cathay Pacific would recognize the itinerary, neither by reservation ID or ticket number…asking to reach out to the third party Underpricer….calling Underpricer resulted in no help like seat requests, mileage number or upgrade request, 15hr layover accommodation voucher guidance…so net in net avoid booking through three layers of intermediaries

Everything was good except checking bags . I had paid for two bags but it didn’t show so we had to do it again while people waited and we were struggling to get to our flight

Flight delayed 4 times on a non-stop from BOS to SFO. Then when landed in SFO had to wait for 30 mins for a gate AT 3:30AM.

The security line at JFK was one of the longest I’ve ever experienced - probably 45 minutes. I don’t know if JetBlue has control over it, but it detracted from the overall experience. Entertainment had good options, but the volume control was a bit small to tap on and the screen had a fair amount of interference blips. Clearer picture would have been better.

Whole experience was poor. Delayed 2 hours. Lied about the delays. Was all jet blues fault and tried to blame on air traffic control. Sent out other let trips and wouldn't allow people to switch aircraft.

Kayak sucked. You gave me a confirmation number that was not useable by the jet blue system. Nor did you send any check in emails. I’ll not be using your site again. Nice work.

Flight emergency landed in Chicago due to “Odor” in back of plane . Had to buy ANOTHER TICKET to get to Boston cash out of my own pocket . Then they would notchange my return flight time without a 400. Charge!!!! Insulting.

we were an hour delayed after boarding and given no reason. Headsets cost money. Also there were openrows with no one setting in them but we were told we were not allowed to swtich.

Very pleasant flight attendants. Gate crew rather loud chatting with each other.

Communication with the customer and stay is important. Staff off with a minor inconvenience but it worked out of course. Also this was a very old Mint Class plane. They snuck this one in on us. The updated aircraft are much better.

Service for food to our seat was a bit slow. Snack choices were just pretzels or baked chips. My seat cushion was not attached. Other than Barbie, video choice were not very good or current.

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Everything you need to know for your flight to San Francisco

Information on the airport you'll fly into in San Francisco