When Should I Leave for Montgomery County Airpark?
Real-time calculator for Gaithersburg, MD (GAI) — live traffic, TSA waits, all transport modes.
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Frequently Asked Questions — GAI
How early should I arrive at GAI?⌄
Montgomery County Airpark is a smaller airport, so check-in and security typically move quickly. Arriving 45–60 minutes before domestic departure is usually sufficient, though we recommend 90 minutes if you are checking bags or travelling with a group. Always confirm with your airline.
What should I know about flying out of GAI?⌄
Montgomery County Airpark serves Gaithersburg with scheduled service. Parking is generally easy and inexpensive compared to major hub airports. Ground transport options may be more limited — plan your journey to the airport in advance using the WhenToLeave calculator above.
About GAI — Montgomery County Airpark
Montgomery County Airpark serves the Gaithersburg area of MD as a regional gateway, offering a more relaxed travel experience than major airports.
Flying through GAI means shorter walks to the gate — most passengers are airside within minutes of arriving at the terminal.
Gaithersburg is located in MD, and GAI sits at coordinates 39.17°N, 77.17°W.
Plan for an average 5-minute walk from security to your gate at GAI. Gates at the far end of concourses may add extra time — always check your boarding pass early.
TSA wait times at GAI are estimated using historical patterns for your day of week and time of travel. Early morning and mid-day flights typically see the shortest security lines.