Are there nonstop flights from Athens (ATH) to Calgary (YYC)?

No. The fastest connection is via Munich, about 11h 59m of total flying time.

What is the fastest connection from Athens (ATH) to Calgary (YYC)?

via Munich ≈ 11h 59m, via Frankfurt am Main ≈ 11h 59m, via Amsterdam ≈ 12h (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Athens Eleftherios Venizelos International Airport (ATH) to Calgary International Airport (YYC)・9,299 km

No nonstop flights. The fastest connection is via Munich (MUC), about 11h 59m of flying time (layover not included).

With milesANA 27,500 miles+ (via LHR)JAL 45,000 miles+ (via ORD)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

21 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.