06/02/2026
if your love language is ordering one of everything, the diner dipper was made for you
Denny's
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- Costa Mesa
- Harbor Boulevard
- Denny's
Denny's is an American restaurant and breakfast & brunch restaurant that has been bringing people together over great food for more than 65 years, offering classic American comfort food and everyday value 24 hours a day, 365 days a year. The menu features innovative options that cater to the taste and dietary requirements of every guest, with all-time favorites like Moons Over My Hammy® and the world-famous Build Your Own Grand Slam® still available. Whether it's breakfast, lunch, dinner or dessert, Denny's is the place where friends and family can come in, sit down and connect. Casual attire. Specialties include breakfast, coffee, dinner, lunch.
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Address
3170 Harbor Boulevard
Costa Mesa, CA
92626
To get to the restaurant located on Harbor Boulevard in Costa Mesa, you have a few options:
Public Transport:
- Take the Orange County Transportation Authority (OC Transpo) bus and get off at the nearest bus stop on Harbor Boulevard.
Driving/Parking:
- If you are coming from the north/south, take Interstate 405 and exit onto Harbor Boulevard. Follow Harbor Boulevard until you reach your destination.
- If you are coming from the east/west, take Interstate 55 or 73 and exit onto Costa Mesa Freeway. From there, take the exit for Harbor Boulevard and follow it until you reach your destination.
- There is typically plenty of parking available in a nearby lot or street parking.
Please note that these directions are general and may need to be adjusted depending on your specific starting location.
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What people say
American restaurants are known for their classic comfort food and everyday value, and Denny's on Harbor Boulevard in Costa Mesa is no exception. With over 65 years of experience, Denny's has been bringing people together over great food, making it the perfect place to relax and be yourself. What sets Denny's apart from other American restaurants is that it is open 24 hours a day, 365 days a year, so you can always satisfy your cravings.
Denny's offers an expansive menu featuring delicious, innovative options that cater to the taste and dietary requirements of every guest that walks in the door. From breakfast to lunch to dinner and dessert, they have something for everyone. Their Sizzlin' Skillets menu features new items like the Parmesan Chicken Sizzlin' Skillet or the Beyond Burger featuring a plant-based patty. If you're looking for a classic favorite, try Moons Over My Hammy®, hand-dipped Milk Shakes, 100% Beef Burgers or the world-famous Build Your Own Grand Slam®.
The restaurant has updated its decor but still maintains its classic American diner feel. The casual attire makes it easy for anyone to come in and enjoy a meal with friends or family. They offer services such as takeout, waiter service, walk-ins and groups which makes it convenient for any occasion.
Overall, Denny's on Harbor Boulevard in Costa Mesa is an excellent choice for those who want to enjoy classic American comfort food at any time of day or night. With their expansive menu options and friendly atmosphere, you'll feel right at home at America's diner.