Mountain Dew Sweet Lightning Price at KFC (2026) — Illinois

A Mountain Dew Sweet Lightning costs $4.26 at KFC in Illinois, United States (price last updated September 2026).

Based on the latest tracked prices, the Mountain Dew Sweet Lightning from KFC costs $4.26 in the United States (November 2026). That's about 19% above the typical KFC drink item — the 3rd-most-expensive of 8 we track. It's available at around 497 KFC locations across the United States. Prices are sourced from delivery platforms and refreshed regularly. See how it stacks up across other chains, and track its price for free, on MenuPriceToday.

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