Are there nonstop flights from St. John's (YYT) to Boston (BOS)?

No. The fastest connection is via Halifax, about 2h 49m of total flying time.

What is the fastest connection from St. John's (YYT) to Boston (BOS)?

via Halifax ≈ 2h 49m, via Montréal ≈ 3h 23m, via Ottawa ≈ 3h 40m (estimated flying time, excluding layovers).

from 15,000 ANA miles (economy, one way, based on the published award charts).

St. John's International Airport (YYT) to Boston Logan International Airport (BOS)・1,545 km

No nonstop flights. The fastest connection is via Halifax (YHZ), about 2h 49m of flying time (layover not included).

With milesANA 15,000 miles+ (via YUL)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

4 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.