Airport Security Guide

Chicago (MDW) Security Tips

MDW has 2 security checkpoints with TSA PreCheck lanes. Security is busiest 5:30–8:30 AM and 4–7 PM. Use the Leave-By Time calculator to fold the modeled MDW wait forecast, your drive, and gate-walk into one exact departure time.

How many security checkpoints does MDW have?

MDW has 2 security checkpoints across 1 terminal (Main). TSA PreCheck dedicated lanes are available, giving members a faster, bin-free screening experience. PreCheck is open at the main checkpoints during regular screening hours, though an individual lane can close off-peak.

When is MDW security busiest?

MDW security lines are typically longest during 5:30–8:30 AM and 4–7 PM. Outside those windows, wait times drop substantially — check the MDW wait forecast for the current picture before you head out. General guidance:

• Domestic flights: arrive at least 2 hours before departure; 2.5 hours during peak periods.
• International flights: arrive at least 3 hours before departure to cover check-in, security, and any customs pre-clearance.

Not sure when to leave? The Leave-By Time calculator uses the modeled MDW wait forecast, real-time traffic, and your gate-walk distance to give you an exact departure time. Also see how early to arrive at the airport for a full breakdown by flight type.

Which MDW security checkpoint is fastest?

The North checkpoint (Gates A1–A39) can be less crowded than the Central checkpoint on peak mornings.

CLEAR is not currently available at MDW. TSA PreCheck at MDW remains the best single upgrade for reducing your security wait.

What are the top MDW airport security tips?

These tips are specific to Chicago (MDW) and verified against current airport configuration:

• MDW is Southwest Airlines' primary Chicago hub, operating from a single terminal with two main security checkpoints feeding Concourses A, B, and C.
• CLEAR is not currently available at MDW; PreCheck is the only expedited lane option and is consistently well-staffed during peak hours.
• Midway is directly connected to the CTA Orange Line — one of the most reliable ways to bypass road traffic and arrive on time regardless of Chicago congestion.
• Southwest's open seating means passengers cluster at gates earlier than with assigned-seat airlines, compressing the pre-security queue timing — even a 90-minute lead can catch a wave.
• Midweek travel (Tuesday/Wednesday) is consistently the least congested; Friday afternoons and Monday mornings see the longest queues.

Does MDW have TSA PreCheck?

Yes — MDW has TSA PreCheck lanes at its security checkpoints. PreCheck members keep shoes, belts, light jackets, laptops, and 3-1-1 liquids packed, and pass through a dedicated screening lane. Membership costs $85–$100 for five years and includes a Known Traveler Number (KTN) you add to every booking.

See live PreCheck wait times and current lane status on the MDW TSA PreCheck page. That page also covers which terminals have a PreCheck lane, enrollment locations, and how PreCheck compares to CLEAR and Global Entry at MDW.

Global Entry interviews can be completed at MDW itself — via an on-site enrollment center or Enrollment on Arrival after an international flight — and membership includes TSA PreCheck. See Global Entry at MDW for locations and hours.

MDW security at a glance

See also: Live MDW TSA wait times · TSA PreCheck at MDW · How early to arrive at the airport