The flight distance from Perth International Airport (PER) in Perth, Australia to Gillespie Field (SEE) in San Diego/El Cajon, United States is 15,097 kilometers (9,381 miles / 8,152 nautical miles). The estimated flight time for this route is approximately 19h, flying east northeast at a heading of 74°.

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 Australia with United States. It is an intercontinental flight between Oceania and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 03:15 in Perth, it's 11:15 in San Diego/El Cajon. With a 16-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

The return flight from San Diego/El Cajon (SEE) to Perth (PER) follows a heading of 256° (west southwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Perth International Airport (PER) and Gillespie Field (SEE) detail pages, or use our flight duration calculator to compare other routes.