Everything you need to navigate New Orleans: the official terminal map link, what airlines fly from each concourse, how to move between terminals, and gate-finding tips that save you backtracking. Verify your specific gate on your boarding pass — assignments change.

The MSY airport authority publishes the most up-to-date map on its official website. Use the link below before you travel so you know the terminal layout and gate locations before you clear security.
Official map
New Orleans official terminal map — airport authority website
Maps are updated when terminals are renovated or new concourses open. Terminal 5 at LAX, for example, has been closed since October 2025 for reconstruction — always confirm your terminal from your boarding pass rather than relying on a saved map.
Here is what each terminal or concourse at MSY handles — which airlines fly from it, the gate range, and key amenities to know before you go.
Gates A1–A6 (6 gates). International carriers (varies by season). All international departures and arrivals; dedicated customs processing area. Located on Level 2. Accessed from the same single Level 2 checkpoint as Concourses B and C.
Gates B2–B16 (14 gates). Serves American Airlines, Delta Air Lines, United Airlines, and Frontier Airlines. Middle concourse; network domestic carriers. Accessed directly from the single Level 2 checkpoint.
Gates C1–C16 (15 gates). Serves Southwest Airlines, Spirit Airlines, and Allegiant Air. Eastern end of the terminal; LCCs and Southwest. Largest concourse by gate count.
Internal corridor on Level 2 — all three concourses connect post-security without re-screening. Level 3 is ticketing, Level 2 is security and gates, Level 1 is arrivals and baggage claim. A single checkpoint on Level 2 serves all three concourses.
Timing tip
Always allow 15–30 minutes for any inter-terminal transfer at MSY — wait times for people-movers, buses, or security re-screening add up faster than the physical distance suggests. Build the buffer into your Leave-By time, not your gate arrival time.
TSA PreCheck closes at 9 PM — late-evening departures revert to standard lanes only, so add a 20-minute buffer for post-9 PM flights. Factor in the escalator or elevator ride from Level 3 ticketing to Level 2 security (3–5 extra minutes). All three concourses are accessible from the same Level 2 corridor post-security — no re-screening needed if your gate assignment changes between A, B, and C.
A few habits that prevent last-minute sprints:
Experienced travellers at MSY use a short checklist every time:
The official New Orleans terminal map is on the airport authority website at https://maps.flymsy.com/. Maps are updated when new gates or concourses open; always verify your specific gate on your boarding pass.
Internal corridor on Level 2 — all three concourses connect post-security without re-screening. Level 3 is ticketing, Level 2 is security and gates, Level 1 is arrivals and baggage claim. A single checkpoint on Level 2 serves all three concourses.
TSA PreCheck closes at 9 PM — late-evening departures revert to standard lanes only, so add a 20-minute buffer for post-9 PM flights. Factor in the escalator or elevator ride from Level 3 ticketing to Level 2 security (3–5 extra minutes). All three concourses are accessible from the same Level 2 corridor post-security — no re-screening needed if your gate assignment changes between A, B, and C. Your boarding pass shows the exact gate. Open your airline app about two hours before departure — gate assignments sometimes change after check-in closes. Look for departure boards throughout the terminal for real-time gate information.
Use the official interactive map at https://maps.flymsy.com/ before you arrive to familiarise yourself with the layout. TSA PreCheck closes at 9 PM — late-evening departures revert to standard lanes only, so add a 20-minute buffer for post-9 PM flights. Factor in the escalator or elevator ride from Level 3 ticketing to Level 2 security (3–5 extra minutes). All three concourses are accessible from the same Level 2 corridor post-security — no re-screening needed if your gate assignment changes between A, B, and C.
Concourse A: Gates A1–A6 (6 gates). International carriers (varies by season). All international departures and arrivals; dedicated customs processing area. Located on Level 2. Accessed from the same single Level 2 checkpoint as Concourses B and C. Concourse B: Gates B2–B16 (14 gates). Serves American Airlines, Delta Air Lines, United Airlines, and Frontier Airlines. Middle concourse; network domestic carriers. Accessed directly from the single Level 2 checkpoint. Concourse C: Gates C1–C16 (15 gates). Serves Southwest Airlines, Spirit Airlines, and Allegiant Air. Eastern end of the terminal; LCCs and Southwest. Largest concourse by gate count.
Leave-By calculator
The TSA Wait Times Leave-By calculator folds the live MSY security wait, your drive time, and terminal navigation into one exact time to leave home — so you reach your gate without guessing.
See also: Live MSY TSA wait times · MSY terminals guide · MSY security tips