Everything you need to navigate Houston: 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 HOU 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
Houston 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 HOU handles — which airlines fly from it, the gate range, and key amenities to know before you go.
Gates 20–32 and 40–51 (25 gates). Serves Southwest Airlines (majority of flights), American Airlines, Delta Air Lines, Frontier Airlines, and Allegiant Air. Main domestic hub with a single checkpoint open 3:45 AM–8:45 PM.
Gates 1–5 (5 gates). Southwest Airlines international flights only. Dedicated Southwest international departures; passengers clear customs at partner airports abroad or on return to the US.
Internal corridor — Central and West Concourses are connected within one terminal building through a single security checkpoint.
Timing tip
Always allow 15–30 minutes for any inter-terminal transfer at HOU — 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 8:45 PM — late-night departures revert to standard lanes only; add a 20–30 minute buffer for post-9 PM flights. HOU's peak wait times regularly exceed 40 minutes on Monday mornings and Friday evenings — among the highest for airports its size — driven by Southwest departure bank clustering. Confirm daily checkpoint schedules at fly2houston.com/hou/security/tsa-screening-hours.
A few habits that prevent last-minute sprints:
Experienced travellers at HOU use a short checklist every time:
The official Houston terminal map is on the airport authority website at https://www.fly2houston.com/hou/map/. Maps are updated when new gates or concourses open; always verify your specific gate on your boarding pass.
Internal corridor — Central and West Concourses are connected within one terminal building through a single security checkpoint.
TSA PreCheck closes at 8:45 PM — late-night departures revert to standard lanes only; add a 20–30 minute buffer for post-9 PM flights. HOU's peak wait times regularly exceed 40 minutes on Monday mornings and Friday evenings — among the highest for airports its size — driven by Southwest departure bank clustering. Confirm daily checkpoint schedules at fly2houston.com/hou/security/tsa-screening-hours. 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.fly2houston.com/hou/map/ before you arrive to familiarise yourself with the layout. TSA PreCheck closes at 8:45 PM — late-night departures revert to standard lanes only; add a 20–30 minute buffer for post-9 PM flights. HOU's peak wait times regularly exceed 40 minutes on Monday mornings and Friday evenings — among the highest for airports its size — driven by Southwest departure bank clustering. Confirm daily checkpoint schedules at fly2houston.com/hou/security/tsa-screening-hours.
Central Concourse: Gates 20–32 and 40–51 (25 gates). Serves Southwest Airlines (majority of flights), American Airlines, Delta Air Lines, Frontier Airlines, and Allegiant Air. Main domestic hub with a single checkpoint open 3:45 AM–8:45 PM. West Concourse: Gates 1–5 (5 gates). Southwest Airlines international flights only. Dedicated Southwest international departures; passengers clear customs at partner airports abroad or on return to the US.
Leave-By calculator
The TSA Wait Times Leave-By calculator folds the live HOU 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 HOU TSA wait times · HOU terminals guide · HOU security tips