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| Domestic flights | ~90 min before departure |
| International flights | ~150 min before departure |
Generally efficient, especially in the McNamara terminal.
Arrive at least 90 minutes before departure for a domestic flight at Detroit (DTW).
Arrive at least 150 minutes before departure for an international flight at Detroit (DTW).
Security and check-in congestion here is low — security and check-in are generally fast, so you can lean toward the shorter end of the recommendation Generally efficient, especially in the McNamara terminal.
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.