To be honest, I haven’t tried it myself, but the documentation says that you can package an iOS app on Windows: https://docs.unrealengine.com/latest/INT/Platforms/iOS/QuickStart/8/index.html
The caveat is:
"Currently, if you are using the launcher version of Unreal Engine, you can only deploy from Windows to iOS for Blueprints-based projects. "
“The PC-only workflow described in this guide requires a pure Blueprint project. If you wish to use code in your project, you will also need a Mac in order to compile the code. You can follow the workflow outlined on the Advanced iOS PC/Mac Workflow page to develop code-based projects for iOS on a PC.”
So if you have a pure Blueprint project then yes, you won’t need a Mac.
Otherwise, you’ll have to copy over the files and use UE4 on Mac.