For more than 60 years, SONIC, America’s Drive-In has built the ultimate dining experience with our drive-in restaurants and we proudly serve our guests in Flemington,NJ. We did it by sticking to what made drive-ins so popular in the first place: made-to-order American classics, signature menu items, and speedy service from friendly Carhops full of fun and personality. Cruise on over to us at 314 Us Highway 31 South for the ultimate SONIC experience!
Fast-food burger & fries joint with an old-school feel, including retro drive-in service. Based on 770 reviews, the restaurant has received a rating of 4.0 stars. Price $
✔️ Dine-in ✔️ Drive-through ✔️ No-contact delivery

Address:
314 Us Highway 31 South, Flemington, NJ 08822
Phone: (908) 788-0010
Website:
Hours
| Tuesday |
9:30 AM–10 PM |
| Wednesday |
9:30 AM–10 PM |
| Thursday |
9:30 AM–10 PM |
| Friday |
9:30 AM–10 PM |
| Saturday |
9:30 AM–10 PM |
| Sunday |
9:30 AM–10 PM |
| Monday |
9:30 AM–10 PM |
Menu
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Menu Photos
Photo Gallery
Reviews
chris prame
Really good Sonic honestly!!!! They are very nice and they will help you save money by making your meals combos if you order separate items that would make a combo but didn’t think of ordering a combo extremely nice and courteous please remember to tip the ladies that bring the food to your vehicle!!!! And honestly I’m really happy that they don’t have the girls on roller skates or rollerblades anymore I have seen too many of them fall and get hurt
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Tina Gonzalez
Most have been short on workers it took a long time for a slushy, sonic blast and 2 milk shakes. The shakes were good. So I guess you can say it was worth the wait.
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Andrew Farrell
Food was good but the female shift lead or manager there was one of the worst individuals i’ve encountered. she kept YELLING at her food runner because they were “busy” at 2pm on a sunday. Very hostile towards me when i mentioned they forgot a side (simple mistake). honestly just left instead of having to deal with her. she can keep the tots, it’s not worth it
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The Throw
Literally got there at 9:50, 10 minutes before they’re supposed to close on Sunday 4/23/23 and they’re completely shut down and not serving. If you’re gonna close early please put 9:45 9:30 whatever it may be on google or maybe put on google that hours may differ based on sales. I get it being a min or two before 10 and closing up but a whole 10 minutes and whatever it was before I get there is un acceptable!!
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Bryan Hills
Extremely disappointed. 1st way too much ice in the drinks so barely any soda. Tater Tots were burnt. Popcorn Chicken was hard. Clearly said no cheese on a burger and it was even said back with no cheese but still put cheese. Then the Banana milkshake was Vanilla. $45 to just throw it away. Will never return
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G Mor
Ugh so gross!! Ordered a corn dog for my little one. Poor kid took one bite, it was uncooked batter inside. I went back through drive thru and showed them. They didn’t apologize…..nothing. Pretty much acted like it was my problem. A treat for my kid turned out to be a big fat waste.
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Big Dudes Big Foods
@BigDudesBigFoods took a #roadtrip to @sonicdrivein in #FlemingtonNJ to try the February special #ExtraLongUltimateCheesesteak They were exceptionally long and cheesey and…#WaitForIt … topped with #TaterTots It was a good stop and worth the ride. #BigDudesBigFoods #shenanigans #cheatmeal #cheesesteak
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Jimmy Wilkinson
Typically understaffed. The limited staff there do the absolute best they can, but they regularly are overwhelmed.
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Jennifer Ostrander
Food is good. Depending on who is working they put too many condiments and they drip off off.
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Maureen Gill
Honestly shocked how any orders are completed here correctly. Ordered a bun-less burger no tomatoes add bacon , and they couldn’t get it right after three attempts. Even after very clear directions, couldn’t figure out this simple order. Burger made wrong three times , finally gave up and asked for a refund. Very poor communication skills. Not a fan of workers sitting on the counters while on their phones, seems unsanitary. I will never return here.
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