The flight distance from San Francisco International Airport (SFO) in San Francisco, United States to George F. L. Charles Airport (SLU) in Castries, Saint Lucia is 6,554 kilometers (4,073 miles / 3,539 nautical miles). The estimated flight time for this route is approximately 9h, flying east at a heading of 96°.

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 an international route connecting United States with Saint Lucia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 21:44 in San Francisco, it's 01:44 in Castries. The 4-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from Castries (SLU) to San Francisco (SFO) follows a heading of 306° (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 George F. L. Charles Airport (SLU) detail pages, or use our flight duration calculator to compare other routes.