Are there nonstop flights from Buenos Aires (EZE) to Denver (DEN)?

No. The fastest connection is via San José, about 12h 14m of total flying time.

What is the fastest connection from Buenos Aires (EZE) to Denver (DEN)?

via San José ≈ 12h 14m, via Houston ≈ 12h 15m, via Dallas-Fort Worth ≈ 12h 15m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Ezeiza International Airport - Ministro Pistarini (EZE) to Denver International Airport (DEN)・9,557 km

No nonstop flights. The fastest connection is via San José (SJO), about 12h 14m of flying time (layover not included).

With milesANA 30,000 miles+ (via IAH)JAL 37,000 miles+ (via DFW)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

13 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.