Fan FavoriteSonic Drive-In • Drinks & Slushes
Route 44 Slush
Nutrition Information
* Nutritional values are approximate and may vary by location and preparation. Source: Sonic Drive-In official website.
Sonic famous 44-ounce slush in your choice of flavor. The ultimate drive-in drink.
Everything You Need to Know About Sonic Drive-In Route 44 Slush
The Route 44 Slush is named after the 44-ounce cup size. Any flavor of slush available at Sonic, delivered in the largest cup they offer. During Happy Hour from 2 to 4 PM daily, the price drops to approximately $2.
How to order Route 44 Slush at Sonic Drive-In
The Route 44 Slush is available for dine-in and takeout at Sonic Drive-In locations across the United States, and through the chain's own app or delivery partners in most markets. Before you order, it is worth checking the current Sonic Drive-In deals in case this item is part of a running promotion.
Sonic Drive-In Route 44 Slush price in 2026
The Route 44 Slush is listed at $3.99 on the Sonic Drive-In menu we track. Prices can differ between restaurants, and airport or stadium locations usually sit higher, so the menu board and the official app are the final word for the restaurant you are visiting. See the full Sonic Drive-In menu for the rest of the prices we hold.
💡 Pro Tips for Ordering Route 44 Slush
- 1Half price during Happy Hour 2-4 PM daily
- 2Mix flavors or add vanilla cream for extra richness
Frequently Asked Questions About Sonic Drive-In Route 44 Slush
Q:How big is the Route 44?
44 ounces: Sonic's largest drink size.
Q:What flavors are available?
Cherry, watermelon, grape, blue raspberry, lime, strawberry, and more. You can mix flavors.
More Sonic Drive-In Menu Items
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SuperSONIC Double Cheeseburger
Two beef patties with double American cheese, mustard, mayo, ketchup, pickles, tomato, lettuce, and onion.
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Classic Cheeseburger
Single beef patty with American cheese, mustard, ketchup, pickles, and onion.
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Bacon Double Cheeseburger
Double beef with crispy bacon, two slices of American cheese, and all the classic toppings.
$2.99Burgers
Jr. Burger
Small single beef patty with mustard, ketchup, pickles, and onion. Best value on the menu.
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Double SONIC Smasher
Two smashed beef patties with crispy edges, double American cheese, pickles, onion, mustard, and ketchup.
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Triple SONIC Smasher
Three smashed beef patties stacked with triple cheese, pickles, onion, mustard, and ketchup.
$9.49Burgers
Big Dill Double SONIC Smasher
Double smashed beef patties loaded with dill pickles, double cheese, and special sauce.
$11.49Burgers
Big Dill Triple SONIC Smasher
Three smashed patties with triple cheese, loaded dill pickles, and tangy special sauce.
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Cheesy Bacon SONIC Stack
Smashed beef patty stacked with bacon, extra cheese, and a rich cheese sauce on top.
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SONIC Stack
Smashed beef patty with American cheese, lettuce, tomato, onion, pickles, and mayo.
About Sonic Drive-In - Fast Food Restaurant
America's Drive-In since 1953, famous for tater tots, cherry limeades, slushes, and made-to-order burgers with Happy Hour half-price drinks every day 2 to 4 PM.
The Route 44 Slush is just one of many excellent choices available on the Sonic Drive-In menu. Whether you are visiting for the first time or you are a regular, USA Food Journal has you covered with up-to-date pricing, nutrition information, and insider tips for every item. Explore the full Sonic Drive-In menu to discover everything available, from appetizers to desserts.
Looking to save on your next visit? We list the rewards and offers each chain publishes, with a link to the source, on our restaurant deals page. You can also compare menus and prices across all major US chains on our all restaurants page.