Denny's prices in Washington
39 Denny's restaurants in Washington, prices checked 2026-10-05.
Key findings
- A Denny's Grand Slamwich Combo typically costs $18.99 in Washington ($18.49 to $21.29 across 39 restaurants). Denny's here is 4% above its typical price in the US.
Every Denny's in Washington, 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
- Denny's prices across the US
- Every brand in Washington
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Questions people ask
- How much is a Denny's Grand Slamwich Combo in Washington?
- As of 2026-10-05, a Grand Slamwich Combo costs $18.49 to $21.29 at 39 Denny's restaurants in Washington, typically $18.99.
- Where is the cheapest Denny's in Washington?
- The cheapest Denny's in Washington is at 34726 16TH Ave S, Federal Way, comparing the same basket at 33 restaurants (Drive Thru Index, 2026-10-05).
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/dennys/washington), prices checked 2026-10-05. You are welcome to quote any figure on this page.