Yes, Jersey Mike’s is open and serving its customers on Halloween. However, they have not introduced any special Halloween menu items as of now.

Therefore, I would recommend you order some regular menu items and this way you can enjoy savory flavors to the fullest while celebrating the spooky day.
Jersey Mike’s Halloween Opening / Closing Time
Yes, Jersey Mike will be serving its customers on Halloween at its regular timings, i.e., 10:00 A.M. to 9:00 P.M. However, the timings may vary depending on the location.
So it is always best to check with your nearest outlet to avoid any last-minute confusion.
Does Jersey Mike’s Have Halloween Specials This Year?

Unfortunately, Jersey Mike’s does not have any special deals for Halloween. Now, instead of getting disappointed, I would suggest you check with your nearest outlet for some local deals or offers for Halloween. Moreover, you can sign up for a MyMike’s Account and earn Free Subs on every order.
Conclusion
As you already know, Jersey Mike’s is open on Halloween; I would suggest you plan your order beforehand for your spooky celebrations. Also, make sure to contact your nearest outlet to check for new offers on Halloween.