Are there nonstop flights from Santa Rosa (STS) to Liberia (LIR)?

No. The fastest connection is via San Francisco, about 6h 42m of total flying time.

What is the fastest connection from Santa Rosa (STS) to Liberia (LIR)?

via San Francisco ≈ 6h 42m, via Los Angeles ≈ 6h 44m, via Dallas-Fort Worth ≈ 7h 3m (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 Daniel Oduber Quirós International Airport (LIR)・4,826 km

No nonstop flights. The fastest connection is via San Francisco (SFO), about 6h 42m of flying time (layover not included).

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

None.

5 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.