Full bar and sit-down tacos in ONT Terminal 4
In Ontario’s T4, Mi Casa Cantina is one of the few full-service Mexican spots past security, with a full bar and table service in a terminal mostly filled with grab-and-go cases. Expect mid-range airport pricing at about $$ and a middle-of-the-road 3-star reputation online, so aim your expectations at “decent pre-flight meal,” not destination dining.
The menu leans on tacos, burritos, and quesadillas, plus margaritas and other tequila drinks from the bar across the small dining room. Reviewers consistently call out the tacos and margaritas as the safer orders, with one traveler praising “pretty good tacos and a strong margarita for an airport restaurant.” Portions run smaller than comparably priced spots in town, but are in line with other sit-down options inside ONT.
Service is the swing factor here: several Google reviews mention slow table service during rushes around morning and late-afternoon banks of flights in T4. One regular trick is to skip the wait list and grab a seat at the bar for quicker attention, especially if you’re just in for a plate of tacos and a drink before boarding. If you’re tight on time, think of this more as a drink-and-a-quick-bite stop than a full multi-course meal.
Watch out for the time drag when the dining room is full; multiple reviewers mention 20–30 minute waits for food during peak hours and say the bill feels high for the portion size. If you want a real seat, a hot plate, and a margarita without resorting to prepacked sandwiches in T4, this is your play. Tip: sit at the bar, order tacos and a house margarita immediately, and cap your stay at 45 minutes if you’re on a typical domestic departure from Ontario.