Are there nonstop flights from Singapore (SIN) to San Diego (SAN)?

No. The fastest connection is via Los Angeles, about 17h 47m of total flying time.

What is the fastest connection from Singapore (SIN) to San Diego (SAN)?

via Los Angeles ≈ 17h 47m, via Tokyo ≈ 17h 48m, via San Francisco ≈ 17h 50m (estimated flying time, excluding layovers).

from 40,000 ANA miles, from 55,000 JAL miles (economy, one way, based on the published award charts).

Singapore Changi Airport (SIN) to San Diego International Airport (SAN)・14,269 km

No nonstop flights. The fastest connection is via Los Angeles (LAX), about 17h 47m of flying time (layover not included).

With milesANA 40,000 miles+ (via LAX)JAL 55,000 miles+ (via LHR)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

10 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.