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Ruby's Diner at the Plaza

Certificate of Excellence
££ - £££
American, Diner
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160 N Gulph Road, King of Prussia, PA 19406
+1 610-337-7829
07:00 - 21:00
Open now
All hours
Sun 07:00 - 18:00
Mon - Sat 07:00 - 21:00
More Info
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126 Reviews from our TripAdvisor Community

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Showing 123: English reviews
Level Contributor
57 reviews
22 restaurant reviews
common_n_restaurant_reviews_1bd8 51 helpful votes
1 of 5 bubbles Reviewed 3 days ago NEW via mobile

We were here on the Sunday of Thanksgiving weekend. The restaurant was closed and a few people inside were carrying chairs and tables to the back of the restaurant. The sign was also gone. It certainly gave the impression it was a permanent closure.

Thank subrice
Level Contributor
141 reviews
72 restaurant reviews
common_n_restaurant_reviews_1bd8 123 helpful votes
4 of 5 bubbles Reviewed 3 weeks ago

We came across this restaurant by chance as we were walking the enormous KOP Mall. Ruby's is side by side w/ a Vietnamese Restaurant. I got a classic cheeseburger that was just the perfect size...tasted great. My vanilla milkshake and French fries were good too. The service was fine and the décor of the place creates a fun atmosphere.

Thank SteveSBrickUSA
Mansfield, Pennsylvania
Level Contributor
7 reviews
4 of 5 bubbles Reviewed 3 October 2016

The food was pretty good. Prices were reasonable. Decor was charming. Nicer and more quiet than sitting in the food court!

Thank thesixs2016
United, Pennsylvania
Level Contributor
5 reviews
3 restaurant reviews
common_n_restaurant_reviews_1bd8 1 helpful vote
5 of 5 bubbles Reviewed 27 September 2016

I took my daughter and her friends to eat there. The food was very good. We loved the train tracks over our heads. The staff was very helpfull

Thank Tammy W
Level Contributor
4 reviews
3 restaurant reviews
2 of 5 bubbles Reviewed 25 September 2016 via mobile

I have eaten at this Ruby's many times over the years. The food was always good. However My daughter and I were in for breakfast at 7:15 and two employees got into it in the kitchen. The waitress was screaming at a guy who was getting everything ready for the day. She was yelling "whats wrong with you? Dont you... More 

Thank B G
Level Contributor
11 reviews
9 restaurant reviews
common_n_restaurant_reviews_1bd8 6 helpful votes
2 of 5 bubbles Reviewed 18 September 2016

Rubbery pancakes, sub-par cinnamon roll french toast, dry bacon, tomato juice that had a very distinct "canny" flavor, and a server who was not the warm and fuzzy type - basically threw our food down on the table. The best thing about the restaurant was the decor - several shiny motorcycles and a 50's atmosphere. The restaurant was clean, but... More 

Thank thymeout65
King Prussia, United States
Level Contributor
41 reviews
26 restaurant reviews
common_n_restaurant_reviews_1bd8 7 helpful votes
2 of 5 bubbles Reviewed 18 September 2016

Ordered a turkey club along with my girlfriend. We both got sick off of it only an hour after eating it. Needless to say we won't be going back!

Thank Sean W
Havertown, Pennsylvania
Level Contributor
143 reviews
71 restaurant reviews
common_n_restaurant_reviews_1bd8 55 helpful votes
5 of 5 bubbles Reviewed 11 September 2016

Great place to take the kids. Burgers are the mainstay on the menu. Kids love watching the train run overhead and the motorcycles. Good prices and great service.

Thank Sue K
Phila, Pa
Level Contributor
200 reviews
100 restaurant reviews
common_n_restaurant_reviews_1bd8 94 helpful votes
5 of 5 bubbles Reviewed 5 September 2016 via mobile

Looks like an old time diner . food ok, nothing special. Service average at best. Breakfast fare was very good.

Thank lermndo
Level Contributor
77 reviews
45 restaurant reviews
common_n_restaurant_reviews_1bd8 47 helpful votes
2 of 5 bubbles Reviewed 26 August 2016

Located in the King of Prussia Mall. Was hoping that this diner would be as fabulous as the location in San Diego. The three of us ordered burgers - hard to screw up a burger right? Guess what? The burgers were raw in the middle (ice cold). Our waiter apologized but never offered to remove the inedible burgers from our... More 

1 Thank ScottieLover66

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Restaurant Details

Rating summary
  • Food
    4 of 5 bubbles
    4 of 5 bubbles
  • Value
    3.5 of 5 bubbles
    4 of 5 bubbles
American, Diner
Breakfast, Lunch, Dinner, Brunch
Restaurant features
Takeout, Seating, Waitstaff, Parking Available, Highchairs Available, Wheelchair Accessible
Good for
Kids, Cheap Eats, Child-friendly
Open Hours
07:00 - 18:00
07:00 - 21:00
07:00 - 21:00
07:00 - 21:00
07:00 - 21:00
07:00 - 21:00
07:00 - 21:00
Location and Contact Information
  • Address: 160 N Gulph Road, King of Prussia, PA 19406
  • Location: United States  >  Pennsylvania (PA)  >  King of Prussia
  • Phone Number: +1 610-337-7829

Questions & Answers

Here's what previous visitors have asked, with answers from representatives of Ruby's Diner at the Plaza and other visitors
2 questions
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West Chester, Pennsylvania
6 days ago
Cherry Hill, New Jersey
9 months ago

See all questions (2)

Questions? Get answers from Ruby's Diner at the Plaza staff and past visitors.
Posting guidelines
Typical questions asked:
  • Do you have gluten-free options?
  • Is there a dress code?
  • Do you allow dogs on the outdoor patio?