Food & Dining in Ontario

Ontario, California sits in the Inland Empire, the sprawling inland region east of Los Angeles, and its food culture reflects decades of demographic layering. The city has a large Latino population—particularly of Mexican and Mexican-American heritage—and this is the backbone of everyday eating here. From neighborhood taquerias serving hand-pressed tortillas to family-run restaurants offering regional Mexican dishes from Jalisco, Michoacán, and Oaxaca, Mexican cuisine is not a niche but a defining presence across the entire city.

The city's position within the Inland Valley also matters. Ontario sits within reach of the agricultural zones that supply much of Southern California's fresh produce, meaning local farmers markets and family-run restaurants often benefit from good seasonal fruit and vegetables. Citrus has deep historical roots in this region—the Inland Empire was once blanketed with orange groves—and though commercial agriculture has given way to development, citrus and stone fruits still appear at seasonal markets.

Beyond Mexican cuisine, Ontario's food landscape includes a range of Southeast Asian, Filipino, Chinese, and American casual dining options that reflect the broader demographic diversity of the Inland Empire. The craft brewery movement has taken hold here as well, with several local tap rooms adding a convivial gathering dimension to the dining scene. The stretch around Ontario Mills and Haven Avenue skews toward national chains and breweries, while downtown Ontario—particularly around 2nd and 4th Streets—has seen independent restaurant openings that give the city a more distinctive local character.

Street food in Ontario exists primarily in the form of food trucks and informal outdoor vendors rather than a dense pedestrian street-food market culture. Food trucks—often serving Mexican food, fusion items, or regional American fare—can be found at business parks, near Ontario Mills, and at rotating pop-up events. Elote vendors occasionally operate near parks and outdoor markets, particularly in warmer months.

For practical safety: food trucks in California are subject to county health inspections and must display their health permit. Checking the San Bernardino County Department of Public Health's online restaurant inspection database is a straightforward way to verify a truck's recent score before eating. As with any casual outdoor food, stick to freshly prepared items served hot or properly cold. Refrigerated items sitting in the sun for extended periods are worth skipping. Hydration matters in Ontario's hot summer months—agua frescas and bottled water are widely available from food vendors.

Breakfast is typically eaten between 7:00 AM and 10:00 AM. Mexican-style breakfasts—huevos rancheros, chilaquiles, menudo on weekends—are common at family restaurants. Many chain and fast-casual spots open early to capture the commuter crowd.

Lunch is generally between 11:30 AM and 2:00 PM and is a primary meal at taquerias and casual restaurants. Many lunch spots offer combination plates or daily specials at lower prices than dinner.

Dinner is typically served from around 5:00 PM, with most locals eating between 6:00 PM and 9:00 PM. Kitchens at independent restaurants may close by 9:30–10:00 PM on weekdays and slightly later on weekends.

Reservations are not the norm at the majority of Ontario's casual and mid-range restaurants, but are worth making at popular independent spots on Friday and Saturday evenings. Chain restaurants generally operate on a walk-in or call-ahead seating basis. Always call ahead or check online to confirm current hours, as schedules can shift.

Vegetarian eating in Ontario is workable but requires some awareness. Mexican restaurants are the most common dining option in the city, and while dishes like bean tacos, cheese quesadillas, and vegetable burritos appear on most menus, it is worth asking whether beans are prepared with lard (manteca) rather than oil—this is a common practice and the beans may not be labeled as such. Staff are generally happy to clarify.

Vegan diners will find more limited but growing options. Asian restaurants, particularly Chinese and some Filipino spots, often have tofu-based or vegetable dishes. Some newer casual restaurants in the downtown area and along the Haven Avenue corridor accommodate plant-based diets more explicitly.

Farmers markets are a good resource for fresh produce, and several grocery stores in the area carry natural and organic product lines. Those with strict dietary requirements may find it useful to identify a grocery store as a fallback for assembling meals independently.

Ontario follows standard Southern California tipping conventions. At sit-down restaurants with table service, 15–18% is considered acceptable and 20% is standard for good service. Many point-of-sale systems will prompt you with suggested tip percentages when paying by card—you are not obligated to select the highest option.

At counter-service restaurants, food trucks, and taquerias where you order at the register, tipping is optional and typically done via a tip jar or a prompted screen. There is no social pressure to tip at purely self-service establishments.

Service charges are not commonly added automatically in Ontario, though some restaurants may add a gratuity for large groups (often 6 or more guests). Check your bill before adding a tip to avoid double-tipping.

Ontario's restaurants are inspected and graded by San Bernardino County's Department of Environmental Health. Letter grades (A, B, C) are posted visibly at restaurant entrances—an A grade indicates the establishment met or exceeded standards at its most recent inspection. It is reasonable to factor this into your choice of where to eat.

Food truck hygiene is also regulated and inspected. The county's inspection records are publicly searchable online if you want to verify a specific vendor.

In summer, Ontario can experience extreme heat (temperatures above 100°F / 38°C are not unusual). Be cautious with food left out at outdoor events or markets in high heat. Stay well hydrated, particularly if spending time outdoors.

Ontario's Inland Empire climate is hot and dry, with mild winters and very hot summers. This shapes what appears at local farmers markets and in seasonal restaurant menus.

Spring (March–May): Strawberries and early stone fruits from nearby agricultural areas begin appearing. Lighter preparations start featuring on restaurant menus.

Summer (June–August): Peak season for stone fruits—peaches, nectarines, plums—as well as tomatoes, corn, and watermelon. Agua frescas made from fresh watermelon and other summer fruits are especially good during this period. This is also the season when elote vendors are most active.

Fall (September–November): Citrus season begins. Pomegranates and late-season figs may appear at markets. Some restaurants and markets feature pumpkin and squash in line with national fall food culture.

Winter (December–February): Citrus is at its peak—navel oranges and mandarins have particular regional significance given the Inland Empire's citrus history. Tamales are especially prominent in December due to holiday traditions in the local Mexican-American community.

Food souvenirs from Ontario itself are modest in variety, but the region offers some genuine options. Locally produced hot sauces from regional Mexican food businesses occasionally appear at farmers markets. Pan dulce from a local panadería makes a thoughtful, inexpensive gift, though it is best consumed within a day or two of purchase.

If visiting a farmers market, seasonal citrus—particularly navel oranges and mandarins in winter—reflects the region's agricultural identity and travels reasonably well.

Customs note for international travelers: The United States has strict agricultural import restrictions. Fresh fruits, vegetables, and many plant products cannot be brought into the country by arriving visitors, and similarly, some items cannot be exported. If you are traveling onward internationally after your time in Ontario, check the agricultural import rules of your destination country before purchasing fresh produce as a gift or souvenir.