| Document and Entity Information | Jul. 31, 2019 | Jun. 29, 2019 |
| Document and Entity Information [Abstract] | ||
| Document Type | 8-K | |
| Document Period End Date | Jul. 31, 2019 | |
| Entity Registrant Name | WINGSTOP INC. | |
| Entity Central Index Key | 0001636222 | |
| Amendment Flag | false | |
| Entity Incorporation, State or Country Code | DE | |
| Entity File Number | 001-37425 | |
| Entity Tax Identification Number | 47-3494862 | |
| Entity Address, Address Line One | 5501 LBJ Freeway | |
| Entity Address, Address Line Two | 5th Floor | |
| Entity Address, City or Town | Dallas | |
| Entity Address, State or Province | TX | |
| Entity Address, Postal Zip Code | 75240 | |
| City Area Code | 972 | |
| Local Phone Number | 686-6500 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Title of 12(b) Security | Common Stock, par value $0.01 per share | |
| Trading Symbol | WING | |
| Security Exchange Name | NASDAQ | |
| Entity Emerging Growth Company | false |
