We've found an exceptional economy fare from Chicago to Buenos Aires at €924 — that's 21% below the usual route average of €1,167. This United, Avianca economy deal represents significant savings for travelers looking to fly round-trip between Chicago and Buenos Aires.

This round-trip journey features 2 stops with a total travel time of 16 hr 55 min. Outbound travel is on Aug 20, 2026, with a return on Aug 27, 2026.

We recommend booking directly through the airline or a trusted booking platform. At these discounted rates, availability can change quickly. Consider flexible fare options if your travel dates aren't fixed.

Argentina operates on the UTC-3 timezone, and the local currency is the ARS. The primary language spoken is Spanish. From the passionate tango halls of Buenos Aires to the thundering Perito Moreno Glacier in Patagonia, Argentina sweeps travelers off their feet with its dramatic landscapes and vibrant culture.

This deal was detected by our automated price comparison system, which continuously monitors flight prices across hundreds of routes. By comparing current prices against historical averages, we identify genuine discounts — not artificially inflated "sales." When we detect a price significantly below the route average, we flag it as a deal.