Time Travel (YA)

When Ellie Baum accidentally time-travels via red balloon to 1988 East Berlin, she's caught up in a conspiracy of history and magic. She meets members of an underground guild in East Berlin who use balloons and magic to help people escape over the Wall. But even to the balloon makers Ellie's time travel is a mystery. When it becomes clear that someone is using dark magic to change history, Ellie must risk everything-- including her only way home--...

"When a mysterious Scotsman suddenly appears in the middle of the road, Klara thinks the biggest problem is whether she hit him with her car. But, as impossible as it sounds, Callum has stepped out of another time...Klara will soon learn that she is the last Pillar of Time...Callum believes he's fated to protect her at all costs...A dark force is hunting the Pillars to claim the power of the goddess--and Klara and Callum are the only two people standing...

Three young men are entrusted with the Imaginarium Geographica, an atlas of fantastical places to which they travel in hopes of defeating the Winter King, whose bid for power is related to the First World War raging in the Real World.

When a violin prodigy who has lost everything wakes up on a ship in another time, a man who wants to escape a life of servitude is forced to confront his past while keeping his former captors from claiming a stolen object of untold value.

When disheartened Pittsburgh teen Audrey transports back to 1812 England, she expects to find love as a Regency romance heroine, but surprisingly sparks fly when she meets Lucy Sinclair. What if you found a once-in-a-lifetime love...just not in your lifetime? Audrey Cameron has lost her spark. But after getting dumped by her first love and waitlisted at her dream art school all in one week, she has no intention of putting her heart on the line again...

Thirteen-year-old Rigg has a secret ability to see the paths of others' pasts, but revelations after his father's death set him on a dangerous quest that brings new threats from those who would either control his destiny or kill him.

"A group of time-traveling teens races through history to try to stop time and the multiverse from unraveling"--

Polly's visit to her grandparents in Connecticut becomes an extraordinary experience as she encounters old friends and mysterious strangers and finds herself traveling back in time to play a crucial role in a prehistoric confrontation.

After falling for Kate, her unexpected death sends Jack back in time to the moment they first met, but he soon learns that his actions have consequences when someone else close to him dies.

Eighteen-year-old twins Taylor and Sheridan are pulled into the future and must find a way to stop the evil government from using the time machine again.