Are there nonstop flights from Boston (BOS) to Colombo (CMB)?

No. The fastest connection is via London, about 17h 25m of total flying time.

What is the fastest connection from Boston (BOS) to Colombo (CMB)?

via London ≈ 17h 25m, via Frankfurt am Main ≈ 17h 25m, via London ≈ 17h 26m (estimated flying time, excluding layovers).

from 40,000 ANA miles, from 47,000 JAL miles (economy, one way, based on the published award charts).

Boston Logan International Airport (BOS) to Bandaranaike International Colombo Airport (CMB)・13,766 km

No nonstop flights. The fastest connection is via London (LHR), about 17h 25m of flying time (layover not included).

With milesANA 40,000 miles+ (via IST)JAL 47,000 miles+ (via DXB)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

12 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.