The flight distance from General Edward Lawrence Logan International Airport (BOS) in Boston, United States to Chiang Rai International Airport (CEI) in Chiang Rai, Thailand is 13,024 kilometers (8,093 miles / 7,032 nautical miles). The estimated flight time for this route is approximately 16h, flying north at a heading of 10°.

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

Time zone information: When it's 14:31 in Boston, it's 02:31 in Chiang Rai. With a 12-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 1,261 feet between the two airports. Chiang Rai International Airport sits higher than General Edward Lawrence Logan International Airport.

The return flight from Chiang Rai (CEI) to Boston (BOS) follows a heading of 352° (north). 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 Chiang Rai International Airport (CEI) detail pages, or use our flight duration calculator to compare other routes.