Opening hours
Open now · closes 9:00 PM
| Monday | 6:00 AM – 9:00 PM |
|---|---|
| Tuesday | 6:00 AM – 9:00 PM |
| Wednesday | 6:00 AM – 9:00 PM |
| Thursday | 6:00 AM – 9:00 PM |
| Friday | 6:00 AM – 9:00 PM |
| Saturday | 6:00 AM – 9:00 PM |
| Sunday | 6:00 AM – 9:00 PM |
Local time in Portsmouth: 4:57 PM (EST). Holiday hours may differ – call (603) 431-1440 to confirm.
Location & directions
580 US 1 BypassPortsmouth, NH 03801
About Roundabout Diner
Roundabout Diner is a diner you'll find at 580 US 1 Bypass in Portsmouth, New Hampshire. Our Portsmouth guide covers 79 food and drink spots, and this is one of them.
Roundabout Diner is open daily, 6:00 AM – 9:00 PM.
You can visit for takeout and dine-in. Offerings include gluten-free options.
Accessibility features: wheelchair accessible. Payment methods accepted: cash. For questions or orders, call (603) 431-1440.
Quick facts
- Category
- Diner
- Address
- 580 US 1 Bypass, Portsmouth, NH 03801
- Phone
- (603) 431-1440
- Hours
- Open daily, 6:00 AM – 9:00 PM
- Listing updated
- · Suggest an edit
Popular times
Usually busiest around 6 PM on Fridays; one of the quieter times is around 7 AM on weekdays.
Based on typical visit patterns for diners and this venue’s opening hours.
Typical prices for diners across the US
Based on 181 menus with 15,859 priced items from diners across the US, the median menu item costs $10.99, and half of all items are priced between $6.15 and $16.05.
We don’t have Roundabout Diner’s own menu on file yet, so use these figures as a guide to what diners across the US typically charge.
| Item | On menus | Typical price |
|---|---|---|
| Grilled Cheese | 42% | $7.95 |
| Hot Chocolate | 38% | $3.56 |
| Onion Rings | 35% | $6.95 |
| Coffee | 35% | $3.00 |
| Chef Salad | 34% | $12.87 |
| French Toast | 33% | $9.00 |
| Cheeseburger | 32% | $9.99 |
| Patty Melt | 29% | $14.00 |
Calculated from 181 menus in our guide. Prices vary by location and change over time.
Features & amenities
Service options
- Takeout
- Dine-in
Offerings
- Gluten-free options
Accessibility
- Wheelchair accessible
Amenities
- Wi-Fi
- Restroom
- Air conditioning
- Non-smoking
Payments
- Cash
Children
- High chairs
- Changing table
The neighborhood
Within a 10-minute walk (half a mile) of Roundabout Diner there are 5 other places to eat and drink in our guide, and 19 within one mile. By type, the places within a mile include Cafes & Coffee (5), Asian & Pacific (2), Pizza (2), and American (2).
2 places within a mile stay open until 10 PM or later on at least one night a week.
Nearest places of other kinds
- Chicken & WingsBuffalo Wild Wings0.4 mi
- Cafes & CoffeePort City Coffee Roasters0.4 mi
- Asian & PacificNikki's Banh Mi Shop0.4 mi
- Bakeries & DessertsDunkin'0.5 mi
- PizzaPortsmouth Pizza Factory0.5 mi
What to expect at a diner
American restaurants cover a lot of ground: the neighborhood diner with a counter and bottomless coffee, the family restaurant with a long laminated menu, the gastropub doing elevated comfort food, and the “New American” kitchen that builds a short seasonal menu around local farms. What ties them together is a menu built on familiar staples – burgers, sandwiches, salads, steaks, fried chicken and pasta – plus regional favorites that change as you cross the country.
What to order
- Cheeseburger – the benchmark dish; a good one tells you how seriously the kitchen takes its basics
- Chicken-fried steak or fried chicken – a comfort classic, especially in the South and Midwest
- Mac and cheese – often a house side that doubles as a main
- A regional specialty – look for anything named after the town or state on the menu
Good to know
- Portions are generous; sharing a starter or ordering a half portion is common and rarely frowned upon.
- Weekday lunch specials and early-bird dinners often cost noticeably less than the regular menu.
- Tipping 18–20% on table service is standard across the US.
Reviews
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Frequently asked questions
What are Roundabout Diner's opening hours?
Open daily, 6:00 AM – 9:00 PM. Monday: 6:00 AM – 9:00 PM; Tuesday: 6:00 AM – 9:00 PM; Wednesday: 6:00 AM – 9:00 PM; Thursday: 6:00 AM – 9:00 PM; Friday: 6:00 AM – 9:00 PM; Saturday: 6:00 AM – 9:00 PM; Sunday: 6:00 AM – 9:00 PM.
Is Roundabout Diner open on Sunday?
Yes, Roundabout Diner is open on Sundays: 6:00 AM – 9:00 PM.
Where is Roundabout Diner located?
Roundabout Diner is located at 580 US 1 Bypass, Portsmouth, NH 03801.
What is the phone number of Roundabout Diner?
You can call Roundabout Diner at (603) 431-1440.
Does Roundabout Diner offer delivery or takeout?
Delivery is not listed for Roundabout Diner, and takeout is available. Listed service options: takeout and dine-in.
Is Roundabout Diner wheelchair accessible?
Listed accessibility features: wheelchair accessible.
Is Roundabout Diner good for kids?
Family-friendly details: high chairs and changing table.
Is Roundabout Diner open late?
No, Roundabout Diner usually closes before 10 PM.
What else is near Roundabout Diner?
There are 19 other places to eat and drink within a mile of Roundabout Diner. Nearby options include Buffalo Wild Wings (0.4 mi), Port City Coffee Roasters (0.4 mi), and Nikki's Banh Mi Shop (0.4 mi).
How much do diners across the US cost?
Based on 181 menus with 15,859 priced items from diners across the US, the median menu item costs $10.99, and half of all items are priced between $6.15 and $16.05.
Nearby places
All in Portsmouth
Listing data © OpenStreetMap contributors, ODbL. Details may have changed – please verify with the business.