You can deduct travel expenses for traveling away from home provided they are ordinary and necessary if the primary purpose of the trip is to collect rental income or to manage, conserve, or maintain your rental property.
See https://www.irs.gov/publications/p527#en_US_2018_publink1000218994
Note that local travel between your home and a rental property generally constitutes nondeductible commuting costs unless you use your home as your principal place of business.
