Seafood Restaurant Fontana | Las Islas Marias

Seafood With Mexican Roots

Las Islas Marias is a seafood restaurant in Fontana with traditional Mexican fare and a full bar. The room sits in a strip-mall setting, so the visit starts with a straightforward arrival and moves right into the meal. Fast service suits a lunch stop, a dinner plan, or a drink at the bar.

The kitchen’s direction is clear from the first order. Seafood sits beside Mexican staples, so the table can lean light or go fuller without changing the place. A full bar adds another layer for guests who want beer, cocktails, or a drink with the meal. The pace stays useful for a quick bite, but the dining room still works for a longer sit-down meal.

Seafood plates on a casual restaurant table.

From the Menu

A quick look at the kitchen’s seafood-led direction.

A simple place for lunch, dinner, and drinks.

About Las Islas Marias

Las Islas Marias is a seafood restaurant on Sierra Ave. in Fontana. It serves traditional Mexican fare with seafood at the center, along with a full bar. The setting is casual and cosy, with dine-in service, takeaway, and delivery available.

The kitchen covers lunch and dinner. Orders can move from quick bites to fuller plates, with comfort food, healthy options, and small plates on the same menu. Guests can start with a shrimp cocktail or ceviche tostada, then move to fish tacos, aguachile, or a molcajete. Catering is also available. Drinks include beer, cocktails, coffee, and alcohol. Live music is part of the space, and the restaurant accepts reservations.

The room suits solo dining, groups, and families. It is good for kids and has high chairs plus a kids' menu. Wheelchair-accessible parking, entrance, seating, and toilet access are part of the site. Parking includes a free parking lot and free of charge street parking.

Las Islas Marias accepts credit cards, debit cards, and NFC mobile payments. Table service is available. Guests can plan a lunch visit or come in for dinner. The address is 8990 Sierra Ave. Q, Fontana, CA 92335, United States. Hours run from 10 AM to 8 PM every day.

Colorful Mexican seafood dishes in a dining room.

Good to Know

The details that shape an easy visit.

Planning your visit: Accepts reservations Reservations are accepted, so a booked table can help with a planned lunch or dinner arrival.
Parking: Free of charge street parking · Free parking lot Drivers can use the free parking lot or street parking near the address, then head straight in for a sit-down meal.
Accessibility: Wheelchair-accessible car park · Wheelchair-accessible entrance · Wheelchair-accessible seating · Wheelchair-accessible toilet Wheelchair access covers the route from arrival to the dining room and restroom, so guests can plan a full visit with one path through the space.
Payment: Credit cards · Debit cards · NFC mobile payments Have a card or phone wallet ready after the meal, since the bill can be settled with card or NFC payment.
Children: Good for kids · High chairs · Kids' menu Families can ask for a high chair and choose from the kids' menu once they are seated.
Who comes here: Family friendly · Groups · Tourists The room suits family visits, group meals, and tourists stopping in for seafood and drinks.
Atmosphere: Casual · Cosy · Quiet · Trendy The dining room stays casual, cosy, quiet, and trendy, so guests can settle in for a relaxed meal.

Gallery

A look at the room, the bar, and the tables.

Ways To Order In

Guests can dine in, take away food, or use delivery. That gives the restaurant a few different ways to fit into the day. Someone on a tight schedule can order ahead and leave with the meal. Another guest can settle in for table service and stay for lunch or dinner.

Reservations are accepted, which helps when the plan is set in advance. The payment options are practical too: credit cards, debit cards, and NFC mobile payments. Those details matter at the end of the visit, when the check comes and the table clears. The same setup works for a solo meal, a pair at a small table, or a larger group that wants to eat together.

Fresh ceviche and shrimp served on shared plates.

Parking And Access

The address is 8990 Sierra Ave. Q, Fontana, CA 92335, United States. Visitors can use free of charge street parking or the free parking lot, then head in through the wheelchair-accessible entrance. Once inside, wheelchair-accessible seating and a wheelchair-accessible toilet support the visit from start to finish.

The place also fits different kinds of stops. It works for lunch and dinner, and the setting is casual, cosy, quiet, and trendy at once. That mix suits a family meal, a group dinner, or a solo stop. The restaurant also serves local specialty, so the visit can stay simple while still feeling tied to the area.

Opening Hours

Open every day from 10 AM to 8 PM.

Monday 10 AM–8 PM
Tuesday 10 AM–8 PM
Wednesday 10 AM–8 PM
Thursday 10 AM–8 PM
Friday 10 AM–8 PM
Saturday 10 AM–8 PM
Sunday 10 AM–8 PM

Frequently Asked Questions

What are the opening hours?

Las Islas Marias is open every day from 10 AM to 8 PM. That gives a wide lunch and dinner window across the week. Guests can plan a midday stop or an evening meal without checking for a day-specific schedule.

Does Las Islas Marias take reservations?

Reservations are accepted. Guests who want a set table can book ahead before arriving for lunch or dinner. That helps when planning for a group meal or a busier time of day.

What payment methods are accepted?

Credit cards, debit cards, and NFC mobile payments are accepted. Guests can finish the meal without planning on a cash payment. A phone wallet or card is enough at the end of the visit.

Is there parking on site?

Free parking lot space and free street parking are both available near the restaurant. The address is 8990 Sierra Ave. Q in Fontana. Drivers can choose the lot first, then use the street if that is easier on arrival.

Is the restaurant accessible for wheelchair users?

The car park, entrance, seating, and toilet are wheelchair accessible. That covers arrival, the dining area, and restroom use in one visit. Guests can plan a sit-down meal with those access points in mind.

Is Las Islas Marias good for children?

The restaurant is good for kids, and high chairs are available. A kids' menu is part of the setup too. Families can arrive ready for a sit-down meal and ask for the chair they need at the table.