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The Roundabout Diner & Lounge

Certificate of Excellence
$$ - $$$
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580 US Highway 1 Byp, Portsmouth Traffic Circle, Portsmouth, NH 03801-4144
+1 603-431-1440
05:30 - 23:00
Open now
See all hours
Sun - Thu 05:30 - 22:00
Fri - Sat 05:30 - 23:00
More Info
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564 Reviews from our TripAdvisor Community

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Showing 556: English reviews
Level Contributor
21 reviews
7 restaurant reviews
common_n_restaurant_reviews_1bd8 2 helpful votes
4 of 5 bubbles Reviewed 2 days ago NEW via mobile

Not much to look at from the outside, but the inside is a cute 1950's diner! Great décor and music, and the food is even better. We had breakfast (served all day), it was freshly made and tasty, generous portions. Would definitely visit again!!

Thank Rachel D
Westford, Massachusetts, United States
Level Contributor
55 reviews
49 restaurant reviews
common_n_restaurant_reviews_1bd8 22 helpful votes
5 of 5 bubbles Reviewed 4 days ago NEW

This place is NUTS! It is huge, yet you feel you are in an old diner somehow. The staff really works very hard. How they keep from crashing into one another is a mystery. Extensive menu with something for everyone. And listen up all you other "breakfast" joints in New England, not only do they offer real maple syrup, it... More 

Thank andyjoanne2014
Level Contributor
6 reviews
3 restaurant reviews
common_n_restaurant_reviews_1bd8 2 helpful votes
5 of 5 bubbles Reviewed 1 week ago via mobile

Excellent choices friendly staff. Try the pulled pork grilled cheese on sourdough or the BLTCA....the Monte Christo was also a hit with our group.

Thank Joanne S
Wells, Maine
Level Contributor
178 reviews
158 restaurant reviews
common_n_restaurant_reviews_1bd8 62 helpful votes
4 of 5 bubbles Reviewed 2 weeks ago via mobile

We didn't wait too long to be seated for breakfast. The menu was extensive and we enjoyed the country gravy Benedict and a regular breakfast plate. The toast was thick cut, the eggs perfectly cooked and the special maple sausage was yummy. I'd go again without hesitation.

Thank foodiegirl625
Saint John, Canada
Level Contributor
14 reviews
5 restaurant reviews
common_n_restaurant_reviews_1bd8 12 helpful votes
1 of 5 bubbles Reviewed 3 weeks ago via mobile

Waited 20 minutes, then my food didn't arrive with my family and it took another 10 minutes+. This happens, but the indifference was irritating. The food was tasty, but they serve textured fries, same as at Burger King. Plus, with the exchange rate, for three people, lunch was $65. Pricey and left disappointed.

1 Thank pleasenthankyou
Boston, Massachusetts
Level Contributor
75 reviews
63 restaurant reviews
common_n_restaurant_reviews_1bd8 54 helpful votes
3 of 5 bubbles Reviewed 3 weeks ago

As a result of Phantom Gourmet's rave hype, we ventured to Portsmouth. The "Phantom" gave them a ~~"Suburu-worth-driving-to-award" for their banana cream pie as well as commended them on other dishes. We are not quite sure what the hype is all about. Pros: Host / reception was nice, pleasant Service / waitress was attentive, polite, efficient Buffet Host was accommodating,... More 

Thank Objective-NotPC
Level Contributor
288 reviews
223 restaurant reviews
common_n_restaurant_reviews_1bd8 110 helpful votes
5 of 5 bubbles Reviewed 3 weeks ago

We have been here several times and the meals have been uniformly excellent. My favorites are the lobster BLT and the eggs benedict. Also, this was our first time here on a Sunday morning and they had an extensive buffet, with separate seating, for twelve bucks for all you can eat. This is a great value! This restaurant is connected... More 

Thank BaysideConnecticut
Cohoes, NY
Level Contributor
204 reviews
162 restaurant reviews
common_n_restaurant_reviews_1bd8 93 helpful votes
4 of 5 bubbles Reviewed 3 weeks ago

We stopped in for breakfast. The diner is super clean and the staff is very accommodating. The portions are large, our coffee cups were always full. My husband loved his eggs with thick bacon and the thick marble rye toast. I ordered their oatmeal. It arrived in a soup bowl! I thoroughly enjoyed my breakfast as it was steel cut... More 

Thank smartcookie1916
Kittery Point, Maine
Level Contributor
41 reviews
32 restaurant reviews
common_n_restaurant_reviews_1bd8 16 helpful votes
4 of 5 bubbles Reviewed 4 weeks ago via mobile

Such great food and great service! I've dined in and had takeout from here and everything is always delicious. Great diner feel!

Thank lboogie757
Saratoga Springs, New York
Level Contributor
164 reviews
102 restaurant reviews
common_n_restaurant_reviews_1bd8 55 helpful votes
4 of 5 bubbles Reviewed 4 weeks ago via mobile

The Roundabout is a little bit of everything- diner, restaurant, bar, function hall, take out, etc,.... They serve breakfast all day which I always love, but we stuck to the dinner menu this time. The menu is extensive with all the diner classics. Service and food were good. Desserts looked great, but we resisted. Give it a try for comfort... More 


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Restaurant Details

Rating summary
  • Food
    4 of 5 bubbles
    4 of 5 bubbles
  • Value
    4 of 5 bubbles
    4 of 5 bubbles
Average prices
USD 7 - USD 24
American, Diner, Soups, Gluten Free Options
Brunch, Drinks, Breakfast, Lunch, Dinner
Restaurant features
Delivery, Reservations, Seating, Waitstaff, Parking Available, Television, Highchairs Available, Wheelchair Accessible, Serves Alcohol, Accepts American Express, Accepts Mastercard, Accepts Visa, Free Wifi, Accepts Discover, Takeout, Full Bar
Good for
Local cuisine, Child-friendly, Kids, Special Occasion Dining, Groups, Cheap Eats
Open Hours
05:30 - 22:00
05:30 - 22:00
05:30 - 22:00
05:30 - 22:00
05:30 - 22:00
05:30 - 23:00
05:30 - 23:00
Location and Contact Information
  • Address: 580 US Highway 1 Byp, Portsmouth Traffic Circle, Portsmouth, NH 03801-4144
  • Location: United States  >  New Hampshire (NH)  >  Portsmouth
  • Phone Number: +1 603-431-1440
At the Roundabout Diner and Lounge, we serve breakfast all day, great burgers and sandwiches, Phantom Gourmet award-winning BBQ, comfort food classics like meatloaf, roast turkey, and of course, local New England favorites like fish and chips, and the best lobster roll around. We also use locally sourced ingredients wherever possible, like bread baked just for us by When Pigs Fly Bakery, breakfast sausage made for us in Vermont, local cheeses, and more. And we make all our delicious cakes and pies right here at the Roundabout. From scratch! If you would like us to cater one of your events then look no further than Chill Catering, one of the largest catering companies on the seacoast.

Questions & Answers

Questions? Get answers from The Roundabout Diner & Lounge 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?