Two of my favorites, but Dean is the time traveler in both:

A Beginning In An End (http://chellefic.livejournal.com/15661.html) - "Cas sends Dean somewhere safe"

The Time-Traveler's Brother (http://gretazreta.livejournal.com/109429.html) by gretazreta... which is apparently locked now, but maybe it will become available again in the future - "His whole life, Dean Winchester travels through time, forwards and backwards, but he always comes back to Sam. Dean doesn't believe in destiny, but if it does exist, his is Sam."

Edited 2017-03-20 12:57 am (UTC)

Thanks

Time Traveler's Brother by getazreta is up at AO3 http://archiveofourown.org/works/2746736

There is another fic with the same name by AmyPond45

Dean's life is turned upside down the night his mother dies. But that's also the night a mysterious grown-up version of Dean's brother first appears in his life. While Dean grows up, "Old Sam" is often there, especially when Dean's father isn't. As Dean learns what the future holds, he begins to question everything his father has taught him about who he is and what he is supposed to become. Can Dean find a way to save his little brother from his own future?

Thanks again.

Argh! I forgot to include the link for the second story http://archiveofourown.org/works/3416087

Edited 2017-03-20 02:40 am (UTC)

Thanks!