When you travel away from your tax home overnight on business, you can deduct the round-trip transportation cost (for example, car expenses or airfare and parking), plus 100 percent of lodging costs for business days, plus 50 percent of meal costs for business days, plus 100 percent of incidentals (such dry cleaning costs) for business days.

https://www.ehtc.com/resources/news-articles/bid/111175/Deductions-for-Temporary-Out-of-Town-Work-As...

You can deduct the above expenses in the following area if employed (not self employed)

• Type in 2106 in the search box, top right of your screen, then click the magnifying glass
• Click the jump to 2106 link in the search results.
• Follow the prompts and onscreen instructions

Arrive at the Any Other Expenses? page

Scroll down to the Travel and Other meals and entertainment fields