Are there nonstop flights from Chicago (ORD) to Rio de Janeiro (SDU)?

No. The fastest connection is via São Paulo, about 11h 19m of total flying time.

What is the fastest connection from Chicago (ORD) to Rio de Janeiro (SDU)?

via São Paulo ≈ 11h 19m (estimated flying time, excluding layovers).

Chicago O'Hare International Airport (ORD) to Santos Dumont Airport (SDU)・8,555 km

No nonstop flights. The fastest connection is via São Paulo (GRU), about 11h 19m of flying time (layover not included).

None.

1 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.