What the official source says, who checks it, and the cheapest flights out of the country if you need to book one.
Argentina
Onward ticket required
The official source says you need a return or onward ticket to enter. Checked by border control on arrival.
“Al arribo al territorio nacional, deberán exhibir el pasaje aéreo de regreso y acreditar los medios para solventar gastos de estadía en la República Argentina, conforme lo solicite la autoridad migratoria correspondiente.”
Source: Consulado General de la República Argentina en México · see the source · checked on 12 October 2026
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Onward ticket required · 12
May be asked for · 21
No official rule found · 6
Rules taken from official sources (governments, embassies), with their date. They change: check before you leave, and with your airline.