Are there nonstop flights from Buffalo (BUF) to St Louis (STL)?

No. The fastest connection is via Detroit, about 2h 17m of total flying time.

What is the fastest connection from Buffalo (BUF) to St Louis (STL)?

via Detroit ≈ 2h 17m, via Chicago ≈ 2h 22m, via Chicago ≈ 2h 23m (estimated flying time, excluding layovers).

from 12,000 JAL miles, from 15,000 ANA miles (economy, one way, based on the published award charts).

Buffalo Niagara International Airport (BUF) to St. Louis Lambert International Airport (STL)・1,083 km

No nonstop flights. The fastest connection is via Detroit (DTW), about 2h 17m of flying time (layover not included).

With milesJAL 12,000 miles+ (via ORD)ANA 15,000 miles+ (via ORD)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

15 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.