Everything you need to navigate Guam: 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 GUM 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
Guam official terminal map — airport authority website
Guam interactive map — searchable by gate, airline, or amenity
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 GUM handles — which airlines fly from it, the gate range, and key amenities to know before you go.
GUM has a single passenger terminal building rather than separate terminals; the departure gate area splits into two wings. The West Concourse covers gates 4 through 12 and houses the airport's food court (gates 4–8), including Tentekomai, Burger King, the Denny's-operated counters, and Micronesian Munchies. The Sagan Bisita lounge sits directly across from Gate 7 and is open to the general public, not just elite flyers. United Club, the airport's other lounge, is on the concourse level between gates 10 and 11.
The East Concourse covers gates 14 through 20. Dining and retail options here are thinner than the West Concourse's food-court cluster; it primarily serves as additional gate capacity for the terminal's wide route network (United Airlines hub flights to Tokyo-Haneda, Osaka-Kansai, Manila, and Pacific island destinations, plus Japan Airlines, Korean Air, Jin Air, Air Seoul, T'way Air, and Philippine Airlines).
GUM is one contiguous terminal building — there is no interterminal train, tram, or shuttle bus needed. After the main second-floor security checkpoint, passengers move up to the gate level, where a central corridor leads to the West Concourse (gates 4–12) or East Concourse (gates 14–20). Because the terminal was not originally built with separate arrival corridors (apart from a few Honolulu-arrival gates that route directly to customs), semi-permanent movable walls now divide much of the concourse into two halves to keep departing and arriving passenger flows apart for post-9/11 security reasons.
Timing tip
Always allow 15–30 minutes for any inter-terminal transfer at GUM — 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.
Since almost all GUM gates lack a dedicated arrivals corridor, the terminal relies on movable partition walls and posted signage — once you've passed a gate area heading toward departures, you generally cannot backtrack through it, so confirm your gate number early and follow signage rather than assuming you can retrace your steps.
A few habits that prevent last-minute sprints:
Experienced travellers at GUM use a short checklist every time:
The official Guam terminal map is on the airport authority website at https://www.guamairport.com/corporate/about-our-airport/terminal-layout — an interactive version is also at https://www.airportinformation.com/GUM/map. Maps are updated when new gates or concourses open; always verify your specific gate on your boarding pass.
GUM is one contiguous terminal building — there is no interterminal train, tram, or shuttle bus needed. After the main second-floor security checkpoint, passengers move up to the gate level, where a central corridor leads to the West Concourse (gates 4–12) or East Concourse (gates 14–20). Because the terminal was not originally built with separate arrival corridors (apart from a few Honolulu-arrival gates that route directly to customs), semi-permanent movable walls now divide much of the concourse into two halves to keep departing and arriving passenger flows apart for post-9/11 security reasons.
Since almost all GUM gates lack a dedicated arrivals corridor, the terminal relies on movable partition walls and posted signage — once you've passed a gate area heading toward departures, you generally cannot backtrack through it, so confirm your gate number early and follow signage rather than assuming you can retrace your steps. 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.airportinformation.com/GUM/map before you arrive to familiarise yourself with the layout. Since almost all GUM gates lack a dedicated arrivals corridor, the terminal relies on movable partition walls and posted signage — once you've passed a gate area heading toward departures, you generally cannot backtrack through it, so confirm your gate number early and follow signage rather than assuming you can retrace your steps.
West Concourse (Gates 4–12): GUM has a single passenger terminal building rather than separate terminals; the departure gate area splits into two wings. The West Concourse covers gates 4 through 12 and houses the airport's food court (gates 4–8), including Tentekomai, Burger King, the Denny's-operated counters, and Micronesian Munchies. The Sagan Bisita lounge sits directly across from Gate 7 and is open to the general public, not just elite flyers. United Club, the airport's other lounge, is on the concourse level between gates 10 and 11. East Concourse (Gates 14–20): The East Concourse covers gates 14 through 20. Dining and retail options here are thinner than the West Concourse's food-court cluster; it primarily serves as additional gate capacity for the terminal's wide route network (United Airlines hub flights to Tokyo-Haneda, Osaka-Kansai, Manila, and Pacific island destinations, plus Japan Airlines, Korean Air, Jin Air, Air Seoul, T'way Air, and Philippine Airlines).
Leave-By calculator
The TSA Wait Times Leave-By calculator folds the live GUM 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 GUM TSA wait times · GUM terminals guide · GUM security tips