Find flights
Deals
Insights
When to book
FAQs & Tips
Direct Flights
Airlines

SIN - SFO

£336 Find cheap flights from Singapore to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Singapore to San Francisco departing on 29/5. 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.
1 adult
0 bags
Sat 1/6
Sat 8/6

Search hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Singapore to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Singapore to San Francisco, as well as popular online travel agencies
In the last 7 days, travellers have searched 43,740,974 times on KAYAK, and here's why:

Save 28% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Singapore to San Francisco (SIN-SFO)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Singapore 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 and deals for you by selecting your travel dates.
Choose your dates
02:00 - 20:25SIN-SFO
33h 25m1 stop
01:05 - 12:35SFO-SIN
20h 30m1 stop
£607China Airlines
Find Deal
Tue, 27 Aug - Fri, 6 Sep
02:00 - 19:55SIN-SFO
32h 55m1 stop
01:05 - 13:05SFO-SIN
21h 00m1 stop
£608China Airlines
Find Deal
Wed, 16 Oct - Tue, 29 Oct
08:45 - 09:15SIN-SFO
15h 30mdirect
12:40 - 00:45SFO-SIN
21h 05m1 stop
Mon, 24 Jun - Mon, 8 Jul
08:45 - 09:15SIN-SFO
15h 30mdirect
12:40 - 00:45SFO-SIN
21h 05m1 stop
Fri, 14 Jun - Sun, 21 Jul
06:15 - 00:01SIN-SFO
32h 46m2 stops
01:45 - 06:40SFO-SIN
37h 55m1 stop
£648United Airlines
Find Deal
Fri, 28 Jun - Sat, 31 Aug
06:15 - 00:01SIN-SFO
32h 46m2 stops
12:10 - 00:45SFO-SIN
21h 35m1 stop
£650United Airlines
Find Deal
Fri, 28 Jun - Sun, 1 Sep
19:50 - 20:15SIN-SFO
15h 25mdirect
22:05 - 05:40SFO-SIN
16h 35mdirect
£657Singapore Airlines
Find Deal
Sat, 28 Sep - Sat, 19 Oct
09:15 - 09:40SIN-SFO
15h 25mdirect
11:30 - 19:10SFO-SIN
16h 40mdirect
£658Singapore Airlines
Find Deal
Wed, 28 Aug - Fri, 6 Sep
01:50 - 17:40SIN-SFO
30h 50m2 stops
13:55 - 00:20SFO-SIN
19h 25m1 stop
£910Japan Airlines
Find Deal
Wed, 7 Aug - Sat, 17 Aug
08:05 - 11:45SIN-SFO
18h 40m1 stop
14:20 - 17:35SFO-SIN
36h 15m2 stops
£993Japan Airlines
Find Deal
Sat, 10 Aug - Sat, 17 Aug

Flights from Singapore to San Francisco - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from Singapore to San Francisco?

The average price of all flights from Singapore to San Francisco clicked on KAYAK for each day over the last 12 months.
For Singapore to San Francisco, Saturday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from San Francisco back to Singapore, the best deals are generally found on Wednesday, with Friday being the most expensive.

What is the cheapest month to fly from Singapore to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Singapore 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 from Singapore to San Francisco is October, where tickets cost £705 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is £1,144 and £1,140 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Singapore to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Singapore to San Francisco, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 76 days before departure.

Which airlines provide the cheapest flights from Singapore to San Francisco?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, United Airlines offered the best one-way deal for that route, at £336. KAYAK users also found Singapore to San Francisco return flights on China Airlines from £607 and on Philippine Airlines from £642.

Which airlines fly direct between Singapore and San Francisco?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Singapore to San Francisco.
There are 2 airlines that fly direct from Singapore to San Francisco. They are Singapore Airlines and United Airlines. The cheapest airline for this route is United Airlines, with the best one-way deal found costing £593. On average, the best prices for this route can be found at United Airlines.

How many flights are there between Singapore and San Francisco per day?

Each day, there are 4 direct flights that take off from Singapore and land in San Francisco, with an average flight time of 15h 18m. The most common departure time is 19:00 and most flights take off in the evening. Each week, there are 28 flights and there are the same amount of flights each day 4.

Which cabin class options are there for flights between Singapore and San Francisco?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 2 cabin class options for the route. These are Business and Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Singapore to San Francisco take?

Direct flights cover the 8,433 miles separating Singapore and San Francisco in about 14h 55m.

What’s the earliest departure time from Singapore to San Francisco?

Early birds can take the earliest flight from Singapore at 08:45 and will be landing in San Francisco at 09:15.

What’s the latest departure time from Singapore to San Francisco?

If you prefer to fly at night, the latest flight from Singapore to San Francisco jets off at 21:00 and lands at 20:55.

Good to know - Cheap tickets from Singapore to San Francisco

Low season

February

High season

December

Cheapest flight

£336
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (12% more expensive on average)
Flight from Singapore to San Francisco

When to book flights from Singapore to San Francisco

Are your dates flexible? Find out the best times to travel from Singapore to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Singapore to San Francisco

  • Are there any non-stop flights from Singapore to San Francisco?

    Travellers who want to reduce their travel time and don’t want to bother with transit can opt for flying with United Airlines or Singapore Airlines to enjoy a non-stop flight. The regular check-in for United Airlines is at Terminal 2 at Changi Airport and for Singapore Airlines the check-in usually is at Terminal 2 or 3.

  • How do I get from San Francisco Airport to the city?

    The quickest way to get to San Francisco is by using the BART Rapid Rail that leaves from the airport. The courtesy AirTrain lines bring visitors from their respective terminal to the station where tickets can be purchased for the BART. Prices, depending on the final destination, are S$ 13.50 (≈$10), children under 4 go free. Cheaper fares of $3-4 (S≈$ 4-5.40) apply for the SamTrans buses that leave from the International Terminal and Terminal 2/3.

  • What is the cheapest flight from Singapore to San Francisco?

    In the last 3 days, the lowest price for a flight from Singapore to San Francisco was £420 for a one-way ticket and £759 for a return.

  • Which airlines offer Wi-Fi service onboard planes from Singapore to San Francisco?

    Only Air Canada offers inflight Wi-Fi service on the Singapore to San Francisco flight route.

  • Which aircraft models fly most regularly from Singapore to San Francisco?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the Singapore to San Francisco flight route.

  • Which airline alliances offer flights from Singapore to San Francisco?

    Star Alliance is the only airline alliance operating flights between Singapore and San Francisco.

  • On which days can I fly direct from Singapore to San Francisco?

    There are direct flights from Singapore to San Francisco on a daily basis.

  • Which is the best airline for flights from Singapore to San Francisco, ANA or Japan Airlines?

    The two airlines most popular with KAYAK users for flights from Singapore to San Francisco are ANA and Japan Airlines. With an average price for the route of £1,369 and an overall rating of 8.4, ANA is the most popular choice. Japan Airlines is also a great choice for the route, with an average price of £1,108 and an overall rating of 8.3.

  • How does KAYAK find such low prices on flights from Singapore 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 from Singapore to San Francisco.

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

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

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Singapore 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 from Singapore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Singapore to San Francisco

  • Looking for a cheap flight from Singapore to San Francisco? 25% of our users found flights on this route for £447 or less one-way and £786 or less round-trip.
  • The long flight from Changi Singapore Airport (SIN) to San Francisco International Airport (SFO) can get boring for children, so let them spend their energy before boarding the plane. All terminals at Changi Airport feature play areas, or you can head over to the Jewel Changi, a complex adjacent to the airport with various attractions like a Canopy Park or Discovery Slides.
  • If you want to explore San Francisco with a rental car, there are ample options at San Francisco Airport to choose from. Upon landing, take the free AirTrain Blue Line from the terminal to reach the car rental centre. The train operates every 5-15 min, with frequency varying depending on whether it is day or night.
  • Travellers who want to stay close to San Francisco International Airport can choose from a selection of airport hotels such as the Aloft Hotel, Crowne Plaza Burlingame or the Best Western Grosvenor, among many others. Courtesy airport-hotel shuttles transfer passengers to airport hotels with their luggage for a convenient ride.
See more tips

Prefer to fly direct from Singapore to San Francisco?

Find which airlines fly direct from Changi to San Francisco, which days they fly and book direct flights.

Direct departures

Singapore Changi to San Francisco

Monday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Tuesday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Wednesday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Thursday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Friday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Saturday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Sunday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

See more direct flights

Direct returns

San Francisco to Singapore Changi

Monday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Tuesday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Wednesday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Thursday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Friday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Saturday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

Sunday

Air India, Singapore Airlines, United Airlines, +1 more

Air India, Singapore Airlines, +2 more

See more direct flights
See more direct flights

Top 5 airlines serving from Singapore to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Singapore to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Singapore 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.
8.4
ANAOverall score based on 942 reviews
8.3Comfort
8.8Crew
8.0Entertainment
8.6Boarding
7.8Food
Airline reviews

Staff and crew are wonderful, professional and courteous. Meal is delicious and snacks can be improved. Entertainment needs improvement, pls update selections of movies. I appreciate that our flight was on time

8.0 ExcellentTheresa, Apr 2024NRT - HNL
Read more about ANA reviews

Staff and crew are wonderful, professional and courteous. Meal is delicious and snacks can be improved. Entertainment needs improvement, pls update selections of movies. I appreciate that our flight was on time

I flew economy class so of course it’s not as roomy as business and first class. But overall it was ok and the seat had an interesting way to recline — the seat itself extended forward instead of the backrest. This way the person sitting behind me would not lose space by my reclining—excellent concept. I wish all airlines used these seats.

The space for the seats i like it. Its not too close like other air line. The food is ok and also the staff. I'm waiting for my flight rewards point because until now i didn't recieved it.

Flying with ANA is always a breeze. Seats are very comfortable.

For the price of a seat that is obviously crammed together so as to get many more people onboard and combined with the long flight duration, Free WiFi should be an automatic “Thank You for Flying with Us!” To charge an additional fee when so many other businesses offers it is a bit “cheap” on the airline’s part.

The space and bed was very comfortable , flight attendants very nice. The food was not tasty at all. I ordered the rib eye and it was so tough I couldn’t cut it.

Food was high quality. Crew was extremely professional, polite, attentive. Flights were on time. Plane had good media tech.

It was ok I thought because my flight was 1pm i was expecting to have lunch but it didn’t and after 7 hr finally dinner time was only chicken sandwich and next breakfast was an hour before plane land in Tokyo. so I should bring some food with me. Japanese flight attend was nice but the other was chewing gum and how she ask and respond to customers was not professional I felt. Maybe because Japan flight attendant is highly train and everyone looked very dress and professional so I was kind disappointed. I like that the bathroom was very clean .

Lovely airport at Haneda. Great food selection. Spacious and private boarding area with dedicated bathroom for each gate.

They did not get my request for veg food that i made a month ago. Also did not have any backup veg food on board or fruit plate or simething. Very disappointing as i had hward about how grwat ANA was supossed to be. Alsio entertainment was lacking and screen and tech was subpar. Overall just mid to low tie. They are living off reputation and are being passed up by most other carriers.

The type of the food requested (Asian vegetarian) was not properly met with. They have very limited snack items that may compensate for the main meals.

The quality of the food is pretty good. Thank you, EVA Air.

Pleasant crew. Very long flight, a bit uncomfortable at times being seated, but not too bad.

No ice for the drinks. Only gave a half a cup of your beverage. Not enough water. I got very dehydrated.

The crew is so cold and indifferent but I have to appreciate their professionalism. The seat is too hard and not comfortable at all. Entertainment is very limited and not of many choices.

Eva is one of the top airlines in Asia... but often are over priced. Finally found a reasonable rate.

My original flight was rescheduled & EVA did a good job rescheduling my flight & connecting flight.

Polite hard working crew. No complaints really. Meals were not to my liking.

Everything was fantastic! The crew really went above and beyond to make it a great flight. I felt cared for with EVA.

t and I Flight crew did excellent job taking care of us and feeding us and staying professional. The boarding was delayed by an hour and then extra security measures were taken. No real explanation except for they said it was more of a maintenance dey

Great service but food taste and options have gone down a few notches.

This airlines is always my favorite. Very consistent customer service and food is good. My last flight with them, I had no idea we landed because it was just that smooth of a land.

At least it was not very cold inside the plane. I noticed there was now a bidet in the bathroom and that’s good! I didn’t like the window seat. Flight was smooth except for 1 turbulence. Plane was on time. Thanks. Food was not that great. Miso and green tea were good! As usual movies were old and there were no changes.

Food is lagging. Very poor choice. Like vending machine fast food.

I didn’t like the check in process I had to check in at the counter took too much time . Didn’t give the upgrade my seat .

Truly impressive service in the air. After the main meal, they have a delicious a la carte menu that you can order anytime until 1.5 hrs prior to landing. Flight crew were so pleasant and very efficient. Wish I could fly JAL more often!

Japan airlines is excellent. I had a great flight with them, and they are the consummate professionals. I booked my flight through Kayak and they sent it on to Underpricer. That felt really scammy. My Oneworld number would not attach to the reservation and I could not choose a seat. I called Japan Airlines and got one but it was in the back. Later I drove to the airport and worked with the excellent agents there to find a better one. Later that day, I got a phone call from Underpricer trying to upsell me the option of choosing a seat. It felt like a Spirit Airlines level crappy move. The flight itself was exactly as nice as you would expect from JAL. The meal was good and the flight crew was awesome.

It was one of the best experiences. The staff were amazing. JAL is my second favorite Asian Carrier I have flown on. Korean Air was my first. Thank you JAL for bringing me home safely and for such an amazing staff and service.

JAL is quite nice in business class. Comfortable, spacious seats. Their entertainment, especially their film selection, isn’t that great though as their are not many new releases like some airlines offer their first and business class customers. . Food is excellent and the option to order on demand is always quite nice, which JAL offers. Flight attendants were very friendly and kind. Overall very good experience with JAL.

Very comfortable unlike my first trip where they switched my flight from JAL to AA which was a disaster!

My experience with Scoot is very good. Will have no issue flying with Scoot again.

My overall experience with Singapore Airlines is great. Will definitely fly Singapore airline again.

Good flight. Fiod was ready a bit late hence a hurry to finish before landing. Excellent crew and service

Great to have actual hot tastey meal on a flight. Well done

Cabin Crew always friendly and helpful. Seating cramped - foul smelling from toilets, high risk of disease. Guard personal property such as expensive sunglasses Coffee always awful and cold Meal trays toddler sized Not worth the extra cost to fly SQ - use a budget airline, same if not better experience

When boarding, after business class should be premium economy, but economy class already lined-up at the gate blocking premium economy to board. Singapore airline crew should done a better job to organize this chaos :( Thank you.

It seems paying premium economy does not make difference with economy. No priority boarding, not worthy paying extra$$$ for premium economy.

A pc of cake or biscuit at least. The airport was like a maze need to take another bus to the main terminal to immigration.

Flying with Singapore airlines is always excelllent - the crew are lovely and the food too is great. It’s my number 1 airline

They were able to assist my elderly father and myself after not being able to check in to scoot. The counter service was phenomenal. They did what they could to get us on the next plane so we could catch our Connecting flight. Scoot closed early on us so we ended up missing our flight.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

So so. Terrible aircraft choice for that leg of the flight.

Our seat tv didn’t work All the rest was perfect

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

Meals were adequate but could be better. Lots of movies, podcasts, tv shows. We really enjoyed using our personal headsets highly recommended. 15 hrs flight great to travel at night.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

the plane was old. the wifi didn’t work. the entertainment was boring and dated. the charging ports were impossible to find. i was mostly ignored by flight attendants that had no problem speaking to the man beside me. i got two drinks the entire time i was on the plane.

Quit making seats narrower and narrower. The guy beside me spilled over in to my seat.

The service was non existent . Crew did very little didn’t even answer call button . Premium economy in this long haul was the worst I have ever experienced . Never again flying with them .

The crews are great.. Easy boarding. Inflight entertainment ok. Food is a disappointment.

Book cheap flights from Singapore to San Francisco

Cheapest flights to San Francisco from Singapore found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Singapore to San Francisco found on KAYAK in the last 72 hours.
29/5Wed
directUnited Airlines
15h 30mSIN-SFO
£336
2/6Sun
directUnited Airlines
15h 30mSIN-SFO
£337
19/5Sun
1 stopZIPAIR
29h 15mSIN-SFO
£354
14/5Tue
1 stopZIPAIR
29h 15mSIN-SFO
£385
29/5Wed
1 stopUnited Airlines
39h 25mSIN-SFO
£386
25/9Wed
1 stopChina Airlines
32h 55mSIN-SFO
£389
14/5Tue
1 stopChina Airlines
32h 55mSIN-SFO
£390
28/8Wed
2 stopsANA
23h 24mSIN-SFO
£504
11/5Sat
directSingapore Airlines
15h 25mSIN-SFO
£585
11/5Sat
directSingapore Airlines
15h 25mSIN-SFO
£589

Search by stops

Search by airline

Search by price

Last minute flights from Singapore to San Francisco

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Singapore to San Francisco that are departing in the next 10 days.
4/5Sat
multi-stopChina Airlines
32h 00mSIN-SFO
19/5Sun
multi-stopChina Airlines
21h 25mSFO-SIN
£607
4/5Sat
multi-stopChina Airlines
32h 00mSIN-SFO
22/5Wed
multi-stopChina Airlines
20h 30mSFO-SIN
£631
4/5Sat
multi-stopChina Airlines
32h 00mSIN-SFO
23/5Thu
multi-stopChina Airlines
32h 35mSFO-SIN
£668
6/5Mon
multi-stopCathay Pacific
47h 55mSIN-SFO
26/5Sun
multi-stopCathay Pacific
20h 35mSFO-SIN
£817
6/5Mon
multi-stop
26h 35mSIN-SFO
14/5Tue
multi-stop
32h 35mSFO-SIN
£882
4/5Sat
multi-stopCathay Pacific
24h 30mSIN-SFO
26/5Sun
multi-stopCathay Pacific
20h 35mSFO-SIN
£883
5/5Sun
multi-stopEVA Air
18h 00mSIN-SFO
19/5Sun
multi-stopEVA Air
19h 45mSFO-SIN
£896
5/5Sun
multi-stop
30h 05mSIN-SFO
25/5Sat
multi-stop
30h 15mSFO-SIN
£940
7/5Tue
directSingapore Airlines
15h 25mSIN-SFO
24/5Fri
directSingapore Airlines
16h 35mSFO-SIN
£1,585
7/5Tue
directSingapore Airlines
15h 25mSIN-SFO
25/5Sat
multi-stopSingapore Airlines
22h 15mSFO-SIN
£1,597

Search by stops

Search by airline

Search by price

Singapore - San Francisco Flights

Departure:

Singapore (SIN)Singapore

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - Singapore

Cabin classes:

£4,409
£2,073
£604

Browse origins:

  • Flights » 
  • Singapore

Browse destinations:

  • Flights » 
  • Worldwide » 
  • San Francisco