Kindred by Octavia E. Butler
I haven't read any time travel in awhile. This one has an interesting premise. Dana, a young African American woman suffers an intense feeling of dizziness, and finds she has instantly been whisked across time and miles and into the antebellum south, but she is back at home with her husband in a matter of seconds. Frighteningly, these episodes continue. At first each stay in the past progressively lasts from minutes to days, but takes only seconds to hours out of her present life. But worst of all her husband managed to follow her into the past, but was not able to come back to the present.
I'm about halfway through. This one will put a check mark in the "a book where the main character is a different ethnicity than you" category of the 2017 Reading Challenge.