Denny's - O'Fallon

American, Breakfast, North American
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Full menu with pictures, prices and categories.

Denny's

Denny's
3.9 / 5 (4927 reviews)

Description

Denny's in O'Fallon, IL, is a beloved American eatery that offers a casual dining experience, earning a respectable average rating of 3.3 stars. With hours that cater to night owls, Denny's welcomes guests from 12:00 AM to 11:59 PM. Whether you’re dining with a companion or gathering a larger group, feel free to call ahead at (618) 622-0471 to secure your table. Prefer to enjoy Denny's from the comfort of your home? You can conveniently order through Uber Eats or DoorDash. The menu also features a variety of vegetarian options to accommodate different dietary preferences. If you're curious about more culinary delights, consider exploring offerings from nearby favorites like China King and The Burger Den. We'd love to hear about your experience—don't forget to leave a review!.

Last update: 17.01.2026 from: Gary

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★ 3.9 / 5 from 4927 reviews
shantel-m-engineer55
11.02.2024

The manager graciously remade my milkshake when it arrived a bit melted. He offered to prepare another one, and I gladly accepted. Even though it was a busy time, he personally made it with a smile and without any hesitation. I truly appreciate his prompt and friendly service. Thank you, sir! I wish you and your team a wonderful day.

jahniyah-m
11.02.2024

I usually order from this restaurant often, and most of the time my meals are fresh and delicious. However, this visit was disappointing. The food tasted stale, and the pancakes were not enjoyable.

larson-regan
08.04.2023

During our visit, the restaurant was understaffed (though that’s not the case today), and there were some rowdy customers who caused a scene with one of the employees. However, everything was handled professionally. The food was fantastic, and given the circumstances, the service was exceptional—truly better than we could have asked for. I would recommend this Denny's to anyone. It may be busy, but our experience was smooth and quick.

gary-barr-vine9760
11.03.2025

We were told there would be a 40-minute wait, even though the restaurant was only about two-thirds full. While we understood that they needed time to catch up, we were disappointed that they wouldn’t let us sit at a table. We’ve decided we won’t return. It was frustrating to be asked to stand (or leave) for 40 minutes when there were plenty of available tables. All we wanted was to sit comfortably and enjoy a conversation with our group of four.

ace-fouts-forest36
11.03.2025

The food was acceptable, but it seemed a bit disorganized and uninviting. My burger looked like it had been hastily assembled. As for cleanliness, the restaurant was as tidy as possible given that they were short-staffed. Now, let's talk about the service: our server was outstanding. He took our orders perfectly and was attentive to our needs without being overbearing. I may not remember your name, late-night server, but you really are amazing!

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