At the end of Season 6, Jon Snow won the Battle of the Bastards (with help from Sansa and Littlefinger) and now the Starks are back at Winterfell. However, this season, Jon has left home to go south and meet with Daenerys. Though fans would love to believe Jon will return home safely, it's been proven time and time again that the King of the North is safest in the North. So will Jon return to Winterfell on Game of Thrones?
Most viewers were overjoyed when Jon finally arrived at Dragonstone and met Daenerys. As the two last Targaryens (though they don't know this yet), it was great to finally see them come face-to-face. However, the meeting was less than cordial. Jon refused to bend the knee and Daenerys was, understandably, unhappy about it. Plus, they took Jon's boat, something he was, also understandably, unhappy about.
When Jon asked Daenerys if he was being held prisoner, she calmly replied, "Not yet," which was certainly a bit concerning. However, by the end of the episode the two were getting along and Daenerys even agreed to let Jon mine for the dragonglass. And thus marks the start of a possible alliance. Or romance? Possibly both.
In any case, it seems unlikely that Daenerys will really forbid Jon from leaving and heading back north. For one thing, she's fresh out of allies and though Jon could be a great one, he also has no troops currently with him. If Daenerys was smart, she would send Jon back home and strike King's Landing from both both sides. Then again, I've never fought in any wars, so what do I know?
A more clear sign that Jon will eventually head back up is in the Season 7 trailer. In a very brief clip, Jon can be seen running side by side with Tormund in the snow. Since this hasn't occurred yet, it seems fair to assume that it will happen later on this season, which means Jon will be back north at some point. However, it's also possible this is just another one of Bran's visions. Even if it is, though, that still means Jon will be going back to Winterfell (or somewhere close to there) at some point. It's really just a question of when.
It's clear from the preview for the next episode, Jon will be in Dragonstone for a little while longer. He and Ser Davos will probably need some time to get that dragonglass. However, once they have it, it'd make sense for Jon to run on home. He still has a war against the army of the dead to prepare for, after all.