The flight distance from Incheon International Airport (ICN) in Seoul, South Korea to Semnan Airport (SNX) in Semnan, Iran is 6,348 kilometers (3,945 miles / 3,428 nautical miles). The estimated flight time for this route is approximately 8h, flying west northwest at a heading of 292°.

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

Time zone information: When it's 07:36 in Seoul, it's 02:06 in Semnan. The 5.5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 3,642 feet between the two airports. Semnan Airport sits higher than Incheon International Airport.

The return flight from Semnan (SNX) to Seoul (ICN) follows a heading of 65° (east 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 Incheon International Airport (ICN) and Semnan Airport (SNX) detail pages, or use our flight duration calculator to compare other routes.