Q:

Move tab from one column to another in Sublime Text using only keys

Does anyone know this shortcut? I'm looking for it online, but I can't seem to find it

A:

To move it is CTRLSHIFT1 to move to Group 0, CTRLSHIFT2 to Group 1, and so on - that's on Linux, Windows, and OSX.
Text buffers can also be moved to their neighbouring groups:

Linux, Windows: 

CTRLk + CTRLSHIFTLEFT
CTRLk + CTRLSHIFTRIGHT

OSX 

SUPERk + SUPERSHIFTLEFT 
SUPERk + SUPERSHIFTRIGHT 

Here's the whole group section of my Default (Linux).sublime-keymap - the Windows keys are all exactly the same, while the OSX keys are the same in the top section but differ in the bottom section, below where I have placed an explanatory comment.
// The keys BELOW are for Linux, Windows, and OSX.

{ "keys": ["ctrl+1"], "command": "focus_group", "args": { "group": 0 } },
{ "keys": ["ctrl+2"], "command": "focus_group", "args": { "group": 1 } },
{ "keys": ["ctrl+3"], "command": "focus_group", "args": { "group": 2 } },
{ "keys": ["ctrl+4"], "command": "focus_group", "args": { "group": 3 } },
{ "keys": ["ctrl+5"], "command": "focus_group", "args": { "group": 4 } },
{ "keys": ["ctrl+6"], "command": "focus_group", "args": { "group": 5 } },
{ "keys": ["ctrl+7"], "command": "focus_group", "args": { "group": 6 } },
{ "keys": ["ctrl+8"], "command": "focus_group", "args": { "group": 7 } },
{ "keys": ["ctrl+9"], "command": "focus_group", "args": { "group": 8 } },
{ "keys": ["ctrl+shift+1"], "command": "move_to_group", "args": { "group": 0 } },
{ "keys": ["ctrl+shift+2"], "command": "move_to_group", "args": { "group": 1 } },
{ "keys": ["ctrl+shift+3"], "command": "move_to_group", "args": { "group": 2 } },
{ "keys": ["ctrl+shift+4"], "command": "move_to_group", "args": { "group": 3 } },
{ "keys": ["ctrl+shift+5"], "command": "move_to_group", "args": { "group": 4 } },
{ "keys": ["ctrl+shift+6"], "command": "move_to_group", "args": { "group": 5 } },
{ "keys": ["ctrl+shift+7"], "command": "move_to_group", "args": { "group": 6 } },
{ "keys": ["ctrl+shift+8"], "command": "move_to_group", "args": { "group": 7 } },
{ "keys": ["ctrl+shift+9"], "command": "move_to_group", "args": { "group": 8 } },
{ "keys": ["ctrl+0"], "command": "focus_side_bar" },

// The keys BELOW are for Linux and Windows only.
//
// The OSX keys all use 'super' instead of 'ctrl'.
//
// e.g. In the top command use: ["super+k", "super+up"]
// e.g. In the bottom command use: ["super+k", "super+shift+right"]

{ "keys": ["ctrl+k", "ctrl+up"], "command": "new_pane" },
{ "keys": ["ctrl+k", "ctrl+shift+up"], "command": "new_pane", "args": {"move": false} },
{ "keys": ["ctrl+k", "ctrl+down"], "command": "close_pane" },
{ "keys": ["ctrl+k", "ctrl+left"], "command": "focus_neighboring_group", "args": {"forward": false} },
{ "keys": ["ctrl+k", "ctrl+right"], "command": "focus_neighboring_group" },
{ "keys": ["ctrl+k", "ctrl+shift+left"], "command": "move_to_neighboring_group", "args": {"forward": false} },
{ "keys": ["ctrl+k", "ctrl+shift+right"], "command": "move_to_neighboring_group" },

Hope this helps.

A:

If you mean rearranging the tabs within the same group, there's a good plugin called MoveTab
My keybindings Sublime Text --> Preferences --> Key Bindings (User) -->
{
    "keys": ["super+alt+shift+["],
    "command": "move_tab",
    "args": { "position": "-1" }
},
{
    "keys": ["super+alt+shift+]"],
    "command": "move_tab",
    "args": { "position": "+1" }
}

Allows CMD+Shift+Option+[ and CMD+Shift+Option+]

If you have Package Control you can install via CMD+Shift+P --> Install Package --> MoveTab

