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| Domestic flights | ~105 min before departure |
| International flights | ~165 min before departure |
Denver's security checkpoints are generally efficient outside of peak morning hours.
Arrive at least 105 minutes before departure for a domestic flight at Denver (DEN).
Arrive at least 165 minutes before departure for an international flight at Denver (DEN).
Security and check-in congestion here is moderate — build in your full recommended buffer, especially at peak times Denver's security checkpoints are generally efficient outside of peak morning hours.
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.