Are there nonstop flights from Monterrey (MTY) to Reykjavík (KEF)?

No. The fastest connection is via Chicago, about 9h 4m of total flying time.

What is the fastest connection from Monterrey (MTY) to Reykjavík (KEF)?

via Chicago ≈ 9h 4m, via Detroit ≈ 9h 4m, via Toronto ≈ 9h 6m (estimated flying time, excluding layovers).

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

Monterrey International Airport (MTY) to Keflavik International Airport (KEF)・6,845 km

No nonstop flights. The fastest connection is via Chicago (ORD), about 9h 4m of flying time (layover not included).

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

None.

9 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.