Are there nonstop flights from Ottawa (YOW) to Istanbul (IST)?

No. The fastest connection is via London, about 10h 13m of total flying time.

What is the fastest connection from Ottawa (YOW) to Istanbul (IST)?

via London ≈ 10h 13m, via Montréal ≈ 10h 14m, via London ≈ 10h 14m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Ottawa Macdonald-Cartier International Airport (YOW) to İstanbul Airport (IST)・7,813 km

No nonstop flights. The fastest connection is via London (LHR), about 10h 13m of flying time (layover not included).

With milesANA 27,500 miles+ (via LHR)JAL 37,000 miles+ (via CDG)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

12 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.