TSA wait times, demystified.

St Louis Regional Airport · Alton/St Louis, US

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Wait · now

3min

likely 0–8 min

Source

Predicted

Confidence

Low

Checkpoints

—

Reports · 24h

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Predicted

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We're showing an airport-wide estimate of 3 min.

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Limited history for ALN — actual wait may vary materially from the estimate.

Wait distribution

ALN · historical pattern

0–5 m4%

5–10 m6%

10–15 m10%

15–20 m14%

20–30 m22%

30–45 m26%

45–60 m12%

60+ m6%

P50 24 min

P90 52 min

P99 78 min

Pad 52 min for 90% confidence

Community reports

Traveler-submitted waits · last 24h

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ALN Security FAQs

The average TSA security wait time at St Louis Regional Airport (ALN) is approximately 3 minutes. During peak hours (typically 5-8 AM and 4-7 PM), wait times can be 5 minutes or longer. Off-peak hours typically see wait times of 2 minutes.

TSA security lines at St Louis Regional Airport (ALN) currently average about 3 minutes. TSA PreCheck lanes are typically under 2 minutes. Wait times are updated every 5 minutes based on real-time data.

Yes, St Louis Regional Airport offers TSA PreCheck lanes at security checkpoints. TSA PreCheck can reduce your wait time by 50% or more, with average waits of 2 minutes compared to 3 minutes in regular lanes.

The best times to go through TSA security at St Louis Regional Airport are typically early morning (5:00-6:00 AM) and mid-afternoon (2:00-4:00 PM). Avoid peak hours between 5:00-8:00 AM for morning business flights and 4:00-7:00 PM for evening departures when security lines are longest.

For domestic flights at St Louis Regional Airport, arrive at least 90 minutes before departure. For international flights, arrive 150 minutes early to allow time for security, immigration, and boarding. If traveling during holidays or peak seasons, add an extra 30 minutes.