Are there nonstop flights from London (LGW) to Sacramento (SMF)?

No. The fastest connection is via Vancouver, about 11h 21m of total flying time.

What is the fastest connection from London (LGW) to Sacramento (SMF)?

via Vancouver ≈ 11h 21m, via Toronto ≈ 11h 53m, via New York ≈ 12h 19m (estimated flying time, excluding layovers).

London Gatwick Airport (LGW) to Sacramento International Airport (SMF)・8,518 km

No nonstop flights. The fastest connection is via Vancouver (YVR), about 11h 21m of flying time (layover not included).

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.