The flight distance from Adelaide International Airport (ADL) in Adelaide, Australia to Letterkenny Airport (LTR) in Letterkenny, Ireland is 16,605 kilometers (10,318 miles / 8,966 nautical miles). The estimated flight time for this route is approximately 21h, flying northwest at a heading of 321°.

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

This is an international route connecting Australia with Ireland. It is an intercontinental flight between Oceania and Europe. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 02:10 in Adelaide, it's 15:40 in Letterkenny. With a 10.5-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

The return flight from Letterkenny (LTR) to Adelaide (ADL) follows a heading of 63° (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 Adelaide International Airport (ADL) and Letterkenny Airport (LTR) detail pages, or use our flight duration calculator to compare other routes.