The flight distance from Chengdu Shuangliu International Airport (CTU) in Chengdu, China to St Mary's Airport (KSM) in St Mary'S, United States is 7,175 kilometers (4,458 miles / 3,874 nautical miles). The estimated flight time for this route is approximately 9h, flying north northeast at a heading of 31°.

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

Time zone information: When it's 19:40 in Chengdu, it's 03:40 in St Mary'S. 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.

There is a significant elevation difference of 1,311 feet between the two airports. St Mary's Airport sits lower than Chengdu Shuangliu International Airport.

The return flight from St Mary'S (KSM) to Chengdu (CTU) follows a heading of 288° (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 Chengdu Shuangliu International Airport (CTU) and St Mary's Airport (KSM) detail pages, or use our flight duration calculator to compare other routes.