The flight distance from Letterkenny Airport (LTR) in Letterkenny, Ireland to San Francisco International Airport (SFO) in San Francisco, United States is 8,002 kilometers (4,972 miles / 4,321 nautical miles). The estimated flight time for this route is approximately 10h, flying northwest at a heading of 311°.

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

Time zone information: When it's 21:55 in Letterkenny, it's 13:55 in San Francisco. With a 8-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 San Francisco (SFO) to Letterkenny (LTR) follows a heading of 33° (north 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 Letterkenny Airport (LTR) and San Francisco International Airport (SFO) detail pages, or use our flight duration calculator to compare other routes.