Are there nonstop flights from Sacramento (SMF) to New York (LGA)?

No. The fastest connection is via Detroit, about 5h 45m of total flying time.

What is the fastest connection from Sacramento (SMF) to New York (LGA)?

via Detroit ≈ 5h 45m, via Chicago ≈ 5h 45m, via Salt Lake City ≈ 5h 45m (estimated flying time, excluding layovers).

from 15,000 ANA miles, from 23,000 JAL miles (economy, one way, based on the published award charts).

Sacramento International Airport (SMF) to LaGuardia Airport (LGA)・4,036 km

No nonstop flights. The fastest connection is via Detroit (DTW), about 5h 45m of flying time (layover not included).

With milesANA 15,000 miles+ (via ORD)JAL 23,000 miles+ (via ORD)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

18 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.