The flight distance from San Francisco International Airport (SFO) in San Francisco, United States to Fernando Luis Ribas Dominicci Airport (SIG) in San Juan, United States is 5,825 kilometers (3,619 miles / 3,145 nautical miles). The estimated flight time for this route is approximately 8h, flying east at a heading of 95°.

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

This is a domestic route within United States. Both airports operate in the same country, which may simplify travel requirements and documentation. Despite being a domestic route, there is a 4-hour time difference between the two cities.

Time zone information: When it's 05:20 in San Francisco, it's 09:20 in San Juan. The 4-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from San Juan (SIG) to San Francisco (SFO) follows a heading of 304° (west northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the San Francisco International Airport (SFO) and Fernando Luis Ribas Dominicci Airport (SIG) detail pages, or use our flight duration calculator to compare other routes.