The cheapest times to fly from SFO to SDU are

  • January 15th to April 29th (except the weeks of January 29th, February 12th, February 19th, and April 9th)
  • August 20th to December 9th (except the weeks of August 27th, September 24th, and November 19th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SFO to SDU is early to mid March. Prices can be as high as $2483 for Saturday flights during late December, or as low as $960 for Monday flights around early to mid March.


When to Fly to Rio de Janeiro

Flying from San Francisco, CA (SFO) to Rio de Janeiro (SDU) will usually cost between $1015 to $1483 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid March with an average ticket price of $1041. Due to high demand the most expensive time to fly is late December, with an average price of $1692. Planning your trip to low-cost times can easily save you $651 on economy flights and even more on first-class flights. Generally, any price below $1094 can be considered a good price for a round-trip SFO to SDU flight.

See below for a graph of average weekly prices for the SFO to SDU route. All prices are for round-trip tickets in USD.

SFO to SDU Flight Prices

Compared to other flights, the SFO to SDU flight is priced close to the average and costs less than the average flight leaving from San Francisco. The average price per mile (for a direct flight) is $0.1, which is far below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to SDU, and Tuesday the cheapest day to fly back into SFO. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $134 (10%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $1100. Return trip prices are from the SDU to SFO flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SFO to SDU can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 12 hour 54 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from SFO to SDU while comparing.

Destination alternative #1: Galeao Antonio Carlos Jobim International Airport (GIG) in Rio de Janeiro

  • 9 miles (14 km) away from SDU
  • Usually 2.97% less expensive than SDU
  • 1-layover flights available

See SFO to GIG flights


Flight Hacking SFO to SDU

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SFO to SDU — but Champion Traveler does!

Hack #1: Miami, FL (SFO > MIA > SDU)

  • Price for both tickets: $1031
  • Average savings: $63 (5.72%)

See SFO to MIA flights

Hack #2: Sao Paulo (SFO > GRU > SDU)

  • Price for both tickets: $1061
  • Average savings: $33 (2.97%)

See SFO to GRU flights

Hack #3: Brasilia (SFO > BSB > SDU)

  • Price for both tickets: $1069
  • Average savings: $25 (2.24%)

See SFO to BSB flights


Flight Questions Answered

Still have questions about flying from SFO to SDU? We’ve got answers.

Which airlines fly this route?

You can find 10 major airlines flying this route most often: Aeromexico, Air Canada, Alaska, American, Azul, COPA, Delta, Gol, LATAM, United, and potentially more during busy seasons.

How far away is it from Santos Dumont Airport to San Francisco International Airport?

The distance between the two airports is roughly 6618 miles or 10651 kilometers.

How long does it take to fly from SFO to SDU?

The real-world flight time for a nonstop SFO to SDU flight is about 12 hour 54 minutes.

How many flights go between San Francisco, CA and Rio de Janeiro?

It depends on the day of the week and the date, but a typical day might have around 64 available flights from SFO to SDU.


Airport Location Info


Departing Airport

Origination code SFO
Origination airport name San Francisco International Airport
City San Francisco, CA
Country the United States
Latitude 37.6
Longitude -122.4

Return Airport

Destination code SDU
Destination airport name Santos Dumont Airport
City Rio de Janeiro
Country Brazil
Latitude -22.9
Longitude -43.2


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.