Gate-side caffeine is scarce at GUM, and Coffee Beanery fills the gap.
This Coffee Beanery sits in the Main terminal at Antonio B. Won Pat International Airport, past security, and often ends up as the default option for a quick coffee. The Google rating hovers around 1 star, which sets expectations low, but if you need caffeine before a late-night flight out of GUM, this is still one of the only recognizable coffee brands in the building. Expect basic espresso drinks, drip coffee, and some premade pastries from the counter cooler.
Prices run high for Guam: think around $5–7 for a latte and $3–4 for drip coffee, with muffins and packaged snacks typically in the $3–6 range. There’s limited seating nearby in the Main terminal concourse, so most people grab drinks and take them back toward their gate. If you care more about something hot than something special, a regular brewed coffee is usually the safest order here.
Service speed swings a lot, especially around the late-night departure banks when several flights leave GUM within a 60–90 minute window. Staff may take a while to move through even a short line of 5–10 people. Custom orders with extra syrups or complex frappé-style drinks slow things even more, so factor in at least a 10–15 minute buffer between ordering and boarding when the terminal feels busy.
With a 1-star rating and little detailed feedback online, expectations around quality stay modest. Milk can run low later in the night, and pastry cases sometimes look picked over after 8–9 p.m. If that happens, pivot to plain iced coffee or an americano instead of drinks that rely on foam or whipped cream. For a smoother stop, hit Coffee Beanery before the main departure rush, then head straight for your gate in the Main terminal and settle in there.