Are there nonstop flights from St Louis (STL) to Calgary (YYC)?

No. The fastest connection is via Minneapolis, about 3h 50m of total flying time.

What is the fastest connection from St Louis (STL) to Calgary (YYC)?

via Minneapolis ≈ 3h 50m, via Chicago ≈ 4h 6m, via Denver ≈ 4h 9m (estimated flying time, excluding layovers).

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

St. Louis Lambert International Airport (STL) to Calgary International Airport (YYC)・2,297 km

No nonstop flights. The fastest connection is via Minneapolis (MSP), about 3h 50m of flying time (layover not included).

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

None.

25 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.