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| Domestic flights | ~120 min before departure |
| International flights | ~180 min before departure |
Heavy Latin America/Caribbean traffic makes immigration and security lines unpredictable — err on the longer side.
Arrive at least 120 minutes before departure for a domestic flight at Miami (MIA).
Arrive at least 180 minutes before departure for an international flight at Miami (MIA).
Security and check-in congestion here is high — this airport is known for slower lines, so err toward the longer end or add extra buffer Heavy Latin America/Caribbean traffic makes immigration and security lines unpredictable — err on the longer side.
Yes — bag-drop lines can add 15-30 minutes at busy airports, so lean toward the longer end of the recommended range if you're not carry-on only.