You may deduct travel expenses incurred in carrying on your trade or business.
If the business does not yet exist, the “carrying on” part of the law denies any immediate deduction. But all is not lost. Your travel to think about, plan, and start a business qualifies as a start-up expense as explained in the article Tax Benefits for Thinking About and/or Starting a New Business.
This article gives insights into some tax-deductible business reasons that you can use to travel for your existing business. In addition to what you read in this article about travel, you also need to know:
How to Deduct Travel by Car, Train, Plane, or Boat
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