Are there nonstop flights from Kathmandu (KTM) to San Francisco (SFO)?

No. The fastest connection is via Seoul, about 16h 21m of total flying time.

What is the fastest connection from Kathmandu (KTM) to San Francisco (SFO)?

via Seoul ≈ 16h 21m, via New Delhi ≈ 16h 32m, via Shanghai ≈ 16h 47m (estimated flying time, excluding layovers).

from 40,000 ANA miles, from 47,000 JAL miles (economy, one way, based on the published award charts).

Tribhuvan International Airport (KTM) to San Francisco International Airport (SFO)・12,198 km

No nonstop flights. The fastest connection is via Seoul (ICN), about 16h 21m of flying time (layover not included).

With milesANA 40,000 miles+ (via DEL)JAL 47,000 miles+ (via ICN)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.