Are there nonstop flights from Santa Rosa (STS) to Milwaukee (MKE)?

No. The fastest connection is via Salt Lake City, about 4h 29m of total flying time.

What is the fastest connection from Santa Rosa (STS) to Milwaukee (MKE)?

via Salt Lake City ≈ 4h 29m, via Denver ≈ 4h 33m, via Las Vegas ≈ 4h 44m (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 General Mitchell International Airport (MKE)・2,961 km

No nonstop flights. The fastest connection is via Salt Lake City (SLC), about 4h 29m of flying time (layover not included).

With milesJAL 23,000 miles+ (via PHX)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

8 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.