Are there nonstop flights from Calgary (YYC) to Istanbul (IST)?

No. The fastest connection is via Reykjavík, about 11h 52m of total flying time.

What is the fastest connection from Calgary (YYC) to Istanbul (IST)?

via Reykjavík ≈ 11h 52m, via Edinburgh ≈ 12h, via Amsterdam ≈ 12h (estimated flying time, excluding layovers).

from 27,500 ANA miles (economy, one way, based on the published award charts).

Calgary International Airport (YYC) to İstanbul Airport (IST)・9,125 km

No nonstop flights. The fastest connection is via Reykjavík (KEF), about 11h 52m of flying time (layover not included).

With milesANA 27,500 miles+ (via LHR)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

33 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.