The flight distance from London Heathrow Airport (LHR) in London, United Kingdom to Semnan Airport (SNX) in Semnan, Iran is 4,573 kilometers (2,841 miles / 2,469 nautical miles). The estimated flight time for this route is approximately 6h, flying east at a heading of 91°.

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 Kingdom with Iran. It is an intercontinental flight between Europe and Asia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 03:19 in London, it's 06:49 in Semnan. The 3.5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 3,582 feet between the two airports. Semnan Airport sits higher than London Heathrow Airport.

The return flight from Semnan (SNX) to London (LHR) follows a heading of 310° (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 London Heathrow Airport (LHR) and Semnan Airport (SNX) detail pages, or use our flight duration calculator to compare other routes.