When you're in the mood for bold flavors and customizable wings, look no further than Wingstop Fontana Sierra Ave. Order online for carryout or delivery and enjoy our classic or boneless wings, or try our tenders and chicken sandwich. With a choice of over 12 iconic flavors, our made-to-order wings are crafted to satisfy any craving. From the rich taste of Garlic Parmesan to the spicy kick of Cajun, our mouthwatering flavors will satisfy you every time. Whatever your flavor preference, pair your wings with our crispy, seasoned fries or treat yourself with our signature loaded Voodoo Fries.
Multiple reviews highlighted unsanitary conditions, including reports of roaches and dirty dining areas.
Food Quality
Customers frequently complained about undercooked, stale, or overly salty food, with some experiencing food poisoning.
Customer Service
Service was often described as rude or unhelpful, with long wait times and frequent order mistakes.
Order Accuracy
Many customers reported issues with incorrect orders, missing items, and poor communication regarding their orders.
TR
Taylor Robles
Jan 2, 2026
1.0
This place was absolutely disgusting. The moment we walked in, it smelled like rotten eggs mixed with straight sewage. Me and my brother couldn’t even stay a full minute before walking out. There was someone inside who smelled like urine and feces, and the staff did absolutely nothing about it. No ventilation, no cleanliness, no concern.
On top of that, the soda machine water tastes like trash they clearly haven’t changed the filter in forever. If the drinks taste that bad, I don’t even want to imagine what’s going on in the kitchen.
If you’re trying to throw up, this is the place. Otherwise, avoid it at all costs. Easily one of the worst restaurant experiences I’ve ever had.
TT
T
Dec 7, 2025
1.0
The big Mexican lady manager with the glasses has terrible customer service
SG
Sandra Greene
Oct 9, 2025
5.0
Live the fries. Great seasoning.
TD
Tyler Day
Sep 4, 2025
1.0
I would avoid this location like the plague, worst food sickness I've ever had before.
I placed an order through UberEats last night (9/04/25) about 12:05am, I've been up all night feeling nauseous over the food I received hours ago. I'm sure it's because they were going to close soon but I received the lasiest, most greasy food of my life. Let me start by saying I ordered a 20pc meal deal and only received 15 of them, not only that, anything that had seasoning was CAKED in it. The fried corn tasted so salty that I could only eat 2 pieces before tossing it out because it was making my head hurt, my cheese fries had Cajun seasoning and I could scrape it off like a layer of toppings, trying to eat around all of it was pointless because there was so much it just made it nasty. Not to mention, half of the fries tasted like mold heavily for some reason, like those little black spots you get in potatoes but all over them. My tenders were mostly fine but All MY BONELESS WINGS WERE UNDERCOOKED AND SWIMMING IN SAUCE. That is no exaggeration either, please see the attached photos so you know I'm not joking or just complaining, there was so much sauce in some of the containers it was spilling over the sides into the bag. They were also undercooked, it tasted like they had just sat in warm oil then were showered in sauce, the problem is not the temperature but the fact that the breading was soft and absorbed with oil like a sponge. I'm no expert but I'm pretty sure you're supposed to fry them until they're crispy and then toss them in sauce, they were hardly fried and they weren't even tossed in sauce because even though my wings were swimming in it, some of them were dry so they were just lazy and poured a ton over the whole thing.
I was honestly really disappointed and disgusted by this food, I don't think I will ever be able to tolerate going back and I don't want to support this behavior. I can only hope they give me a refund or gift cards so I can give them away to family or homeless people for something because it feels like a complete waste of money. I seriously would've been happier staying home and microwaving some chicken nuggets rather than going here and wasting money to become sick.
Our nutrition and allergen information can be found at the following locations:
www.wingstop.com/nutrition
www.wingstop.com/allergens
How can I send you feedback?
We take our customer feedback seriously and value your input. If you have any issues that require our attention, or just want to drop us a nice note, please fill out the Contact Us form and we'll be in touch to assist you.
Am I able to submit ideas to Wingstop for future consideration?
We at Wingstop Restaurants Inc. ("Wingstop") are proud that our fans are excited by our brand and want to share their ideas, innovations, flavors, and other wing-loving thoughts with us. However, Wingstop has a full-time staff of wing experts who we rely on to generate new ideas for our brand and our fans. Not that your ideas are unworthy, but you don't want to put the team out of a job. And our lawyers tell us that we need to avoid unsolicited ideas because we don't want to have any dispute as to ownership of those great ideas. Below is more legal mumbo jumbo explaining our policy.
UNSOLICITED IDEAS
Customers of Wingstop may have the perfect idea for a new concept, and we may be missing out on an exciting opportunity, but ownership and protection must be considered. Wingstop maintains a policy that does not permit it or its employees to accept any unsolicited ideas from outside sources (fans and other third parties).
Wingstop strives to innovate and create through internal business departments and their employees. With this in mind, if we create a new concept through our internal experts, and a talented customer/fan submits a substantially similar idea, determining who the originator of the wing-tastic idea is would be a challenge. To better protect ourselves as well as all of our fans out there, we must adhere to this strict policy which does not permit the review, consideration, or acceptance of such ideas from outside parties to avoid any confusion of ownership. Therefore, we encourage you not to send us unsolicited ideas.
TERMS GOVERNING SUBMISSIONS
If you nevertheless insist on sending us your unsolicited ideas, the following conditions apply:
Wingstop shall have no obligations concerning the submissions, including no obligation to review the submissions, return any materials, or acknowledge receipt of the submissions.
All submissions will be deleted from working files within Wingstop and no response will be delivered to confirm receipt of any submissions.
Due to archiving requirements, your email may be retained on our system, but please understand this is not an effort to keep record of our customers' great ideas; rather, it is incidental to archiving.
How can I input special instructions into my online order?
We offer the most commonly ordered menu items as options for our online ordering system. If you're craving something special and can't find it online, call your Wingstop directly and they'll get your flavor hooked up.
How do I locate a restaurant near me?
Click the Locations link located at the top of the Wingstop website located at www.wingstop.com.
How do I reset my password if I have forgotten or lost it?
Click the "Forgot Password?" link on the login page.
What are the operating hours of Wingstop Fontana Sierra Ave?
Wingstop Fontana Sierra Ave is open daily from 10:00 AM to 1:00 AM.
Does Wingstop Fontana Sierra Ave offer delivery services?
Yes, Wingstop offers delivery, same day delivery, and no-contact delivery services.
Can I order Wingstop online for pickup or delivery?
Yes, you can order online for carryout and delivery through Wingstop's website or mobile apps.
What types of wings does Wingstop Fontana Sierra Ave offer?
They offer classic wings, boneless wings, and tenders with over 11 iconic flavors including Lemon Pepper and Original Hot.
Where is Wingstop Fontana Sierra Ave located?
Wingstop is located at 9765 Sierra Ave, Fontana, CA 92336, United States.
Does Wingstop Fontana Sierra Ave have a drive-through?
No, Wingstop Fontana Sierra Ave does not have drive-through service; it is closed all days for drive-through.
What payment methods are accepted at Wingstop Fontana Sierra Ave?
Wingstop accepts American Express, Discover, Mastercard, and Visa credit cards.
Which nearby restaurants can I visit before or after dining at Wingstop?
Nearby restaurants include Tortas Sinaloa, Mario's Pizza, KFC, Thai Kitchen Bowl, Mariscos Licenciado #3, Habit Burger Grill, and The Habit Burger Grill.
Are there any nearby stores to shop at when visiting Wingstop?
Yes, nearby stores include Queen's Boutique (women's clothing), Botas Bronko (men's clothing and shoes), Payless Shoe Source, Frank Collection, and Print Kraze for printing services.
What local services are available near Wingstop Fontana Sierra Ave that can be useful for customers?
Nearby services include Strong Tie Insurance (auto and home insurance), Cell Phone Zone, Los Amaya Electronic Y, various barbershops such as California's Barber Shop and A Cortar Barbershop, Star Nails and Marybel Beauty Salon, and pharmacies like Farmacia M.