The flight distance from Asmara International Airport (ASM) in Asmara, Eritrea to San Francisco International Airport (SFO) in San Francisco, United States is 13,815 kilometers (8,584 miles / 7,460 nautical miles). The estimated flight time for this route is approximately 17h, flying north northwest at a heading of 342°.

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

This is an international route connecting Eritrea with United States. It is an intercontinental flight between Africa and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 21:56 in Asmara, it's 11:56 in San Francisco. With a 10-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 7,648 feet between the two airports. San Francisco International Airport sits lower than Asmara International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from San Francisco (SFO) to Asmara (ASM) follows a heading of 22° (north 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 Asmara International Airport (ASM) and San Francisco International Airport (SFO) detail pages, or use our flight duration calculator to compare other routes.