The flight distance from Singapore Changi International Airport (SIN) in Singapore, Singapore to Semnan Airport (SNX) in Semnan, Iran is 6,442 kilometers (4,003 miles / 3,478 nautical miles). The estimated flight time for this route is approximately 9h, flying northwest at a heading of 312°.

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 Singapore with Iran. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 20:43 in Singapore, it's 16:13 in Semnan. The 4.5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 3,643 feet between the two airports. Semnan Airport sits higher than Singapore Changi International Airport.

The return flight from Semnan (SNX) to Singapore (SIN) follows a heading of 114° (east southeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Singapore Changi International Airport (SIN) and Semnan Airport (SNX) detail pages, or use our flight duration calculator to compare other routes.