Customs cleared, keys in hand: Avis sits right in arrivals
Avis at Antonio B. Won Pat International Airport (GUM) runs its counter in the Main Terminal arrivals lobby, directly after the customs hall, so you walk out, turn to the rental desks, and start paperwork without stepping outside. This setup suits anyone landing late into Guam who doesn’t want to wait for shuttles or off-airport transfers.
The Avis desk keeps hours aligned to flight banks in the Main Terminal, typically opening ahead of early-morning arrivals and staying on through late-night international flights; check your specific arrival time and reservation to avoid gaps. Because the counter is landside in arrivals, you only see it after immigration and customs, not in the departures check-in area.
Vehicle supply at GUM usually leans toward compact and midsize sedans, with some SUVs in the mix, and inventory ties directly to how many flights hit the Main Terminal in a given window. Pricing swings with season and demand on Guam, especially around holidays and summer dates, so locking in a rate online before you land tends to beat walk-up quotes at the arrivals lobby counter.
Pick-up works in two parts: you show license, passport, and credit card at the Avis counter in the arrivals lobby, then staff direct you to the on-airport parking area just outside the terminal where the cars sit in marked bays. The whole process from counter to driving off can run 15–30 minutes depending on how many passengers from your same flight queue at the desk and how fast baggage rolls out on the single arrivals belt.
Returns feed back into the same side of the Main Terminal, with signs for “Rental Car Return” leading you toward the parking rows used by Avis and a short walk back into departures check-in. Plan an extra 15–20 minutes at the airport for refueling, parking, and key handover before an outbound flight, especially during evening push periods when several regional departures leave within a 90-minute window.
Practical tip: add your flight number to the Avis reservation and keep your booking email handy on your phone; if your inbound into GUM runs late, that reference number at the arrivals lobby counter can speed up getting you into a car.