Everything you need to navigate Grand Rapids: 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 GRR 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
Grand Rapids 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 GRR handles — which airlines fly from it, the gate range, and key amenities to know before you go.
Gates A1–A16 (16 gates). Serves Delta Air Lines, American Airlines, and United Airlines. South side of the terminal building. Legacy network carriers.
Gates B1–B8 (8 gates). Serves Southwest Airlines, Sun Country Airlines, Frontier Airlines, and Allegiant Air. North side of the terminal building. Low-cost and leisure carriers.
Internal corridor — single terminal building. One checkpoint serves both Concourses A and B; a third security lane opens during peak periods.
Timing tip
Always allow 15–30 minutes for any inter-terminal transfer at GRR — 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.
GRR's official homepage (grr.org) displays a live wait-time widget — check it before leaving for the airport. Target midday departures (11 AM–2 PM) when waits regularly drop below 8 minutes. On Fridays and Sundays arrive 2 hours early; PreCheck averages 5–10 minutes even during peaks. A TSA PreCheck enrollment kiosk is available pre-security 7 AM–3 PM daily.
A few habits that prevent last-minute sprints:
Experienced travellers at GRR use a short checklist every time:
The official Grand Rapids terminal map is on the airport authority website at https://www.grr.org/terminal-map. Maps are updated when new gates or concourses open; always verify your specific gate on your boarding pass.
Internal corridor — single terminal building. One checkpoint serves both Concourses A and B; a third security lane opens during peak periods.
GRR's official homepage (grr.org) displays a live wait-time widget — check it before leaving for the airport. Target midday departures (11 AM–2 PM) when waits regularly drop below 8 minutes. On Fridays and Sundays arrive 2 hours early; PreCheck averages 5–10 minutes even during peaks. A TSA PreCheck enrollment kiosk is available pre-security 7 AM–3 PM daily. 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://www.grr.org/terminal-map before you arrive to familiarise yourself with the layout. GRR's official homepage (grr.org) displays a live wait-time widget — check it before leaving for the airport. Target midday departures (11 AM–2 PM) when waits regularly drop below 8 minutes. On Fridays and Sundays arrive 2 hours early; PreCheck averages 5–10 minutes even during peaks. A TSA PreCheck enrollment kiosk is available pre-security 7 AM–3 PM daily.
Concourse A: Gates A1–A16 (16 gates). Serves Delta Air Lines, American Airlines, and United Airlines. South side of the terminal building. Legacy network carriers. Concourse B: Gates B1–B8 (8 gates). Serves Southwest Airlines, Sun Country Airlines, Frontier Airlines, and Allegiant Air. North side of the terminal building. Low-cost and leisure carriers.
Leave-By calculator
The TSA Wait Times Leave-By calculator folds the live GRR 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 GRR TSA wait times · GRR terminals guide · GRR security tips