The flight distance from General Edward Lawrence Logan International Airport (BOS) in Boston, United States to Karlovy Vary International Airport (KLV) in Karlovy Vary, Czech Republic is 6,161 kilometers (3,828 miles / 3,327 nautical miles). The estimated flight time for this route is approximately 8h, flying northeast at a heading of 51°.

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

Time zone information: When it's 20:04 in Boston, it's 02:04 in Karlovy Vary. With a 6-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 1,970 feet between the two airports. Karlovy Vary International Airport sits higher than General Edward Lawrence Logan International Airport.

The return flight from Karlovy Vary (KLV) to Boston (BOS) follows a heading of 297° (west 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 General Edward Lawrence Logan International Airport (BOS) and Karlovy Vary International Airport (KLV) detail pages, or use our flight duration calculator to compare other routes.