Are there nonstop flights from Santa Rosa (STS) to Hartford (BDL)?

No. The fastest connection is via Denver, about 6h of total flying time.

What is the fastest connection from Santa Rosa (STS) to Hartford (BDL)?

via Denver ≈ 6h, via Las Vegas ≈ 6h 11m, via Phoenix ≈ 6h 30m (estimated flying time, excluding layovers).

from 23,000 JAL miles (economy, one way, based on the published award charts).

Charles M. Schulz Sonoma County Airport (STS) to Bradley International Airport (BDL)・4,212 km

No nonstop flights. The fastest connection is via Denver (DEN), about 6h of flying time (layover not included).

With milesJAL 23,000 miles+ (via DFW)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.