Sonic prices in Illinois
51 Sonic restaurants in Illinois, prices checked 2026-10-03.
Key findings
- A Sonic Sonic Cheeseburger typically costs $5.79 in Illinois ($5.59 to $6.89 across 51 restaurants). Sonic here is 7% above its typical price in the US.
The scoop
Illinois Sonic swings by 11%Across 51 Sonic spots in IL, the basket runs from $30.24 in Quincy, IL to $33.64 in Country Club Hills, IL. That is an 11% spread for the same Sonic basket.
Quincy grabs the Sonic bargainQuincy, IL has the cheapest Sonic basket shown at $30.24. Its Sonic Cheeseburger is $6.19.
Country Club Hills tops the Sonic mapCountry Club Hills, IL has the priciest Sonic basket shown at $33.64. Its Sonic Cheeseburger is $5.99, while Sonic Cheeseburger prices across the state run from $5.59 to $6.89.
Illinois sits above typical Sonic pricingThe median Sonic basket in IL is $31.94. That is 7% above the national typical price, ranking 26 of 43 states where 1 = cheapest.
Every Sonic in Illinois, by town
Each restaurant links to its full menu with prices. A town with its own page links to it, where every brand there is compared.
More prices
- Sonic prices across the US
- Every brand in Illinois
- McDonald's in Illinois
- Burger King in Illinois
- Wendy's in Illinois
- Taco Bell in Illinois
- KFC in Illinois
- Popeyes in Illinois
- Chick-fil-A in Illinois
- Chipotle in Illinois
- Jersey Mike's in Illinois
- Firehouse Subs in Illinois
- Five Guys in Illinois
- Culver's in Illinois
- Shake Shack in Illinois
- Arby's in Illinois
- Dunkin' in Illinois
- Wingstop in Illinois
- Church's Texas Chicken in Illinois
- Jack in the Box in Illinois
- Hardee's in Illinois
Questions people ask
- How much is a Sonic Sonic Cheeseburger in Illinois?
- As of 2026-10-03, a Sonic Cheeseburger costs $5.59 to $6.89 at 51 Sonic restaurants in Illinois, typically $5.79.
- Where is the cheapest Sonic in Illinois?
- The cheapest Sonic in Illinois is at 1501 Broadway Street, Quincy, comparing the same basket at 51 restaurants (Drive Thru Index, 2026-10-03).
How these prices are measured
Every day we check the menu at every restaurant of each chain, through the same ordering app its customers use, and record each item's pickup price. Restaurants are compared on a basket of items every full-menu restaurant of that brand sells. An index of 100 is the brand's typical (median) restaurant in the country, so 95 means 5% cheaper and 110 means 10% pricier. Brands are only ever compared with themselves, never with each other.
Citing this data: Source: Drive Thru Index (https://drivethruindex.com/brands/sonic/illinois), prices checked 2026-10-03. You are welcome to quote any figure on this page.