The flight distance from St Louis Regional Airport (ALN) in Alton/St Louis, United States to San Francisco International Airport (SFO) in San Francisco, United States is 2,812 kilometers (1,747 miles / 1,518 nautical miles). The estimated flight time for this route is approximately 4h, flying west at a heading of 277°.

This is a medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

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 2-hour time difference between the two cities.

Time zone information: When it's 05:19 in Alton/St Louis, it's 03:19 in San Francisco.

The return flight from San Francisco (SFO) to Alton/St Louis (ALN) follows a heading of 77° (east northeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the St Louis Regional Airport (ALN) and San Francisco International Airport (SFO) detail pages, or use our flight duration calculator to compare other routes.