Just get an internship anywhere. If you are flight operations, I would still try with all the airlines. Check with regionals. I interned with a regional back in the day and they offered us interviews for pilot slots after the internship. In exchange, the internship was unpaid. This won't happen anymore, but maybe it will help should you need it when you get your ATP mins.
I would also check with NBAA, AOPA, and AAAE. AAAE might not be flight operations, but many airports look for interns which have an operations twist to it.
If push comes to shove, just get a general business internship. It can have an aviation twist or not. I'm a firm believer in having some experience than just flight operations since this industry has huge booms and massive busts (ie 2008). I graduated when airlines were putting tons of pilots on the streets. I was never able to make it to the right seat even though my major was just flight operations (pilot). I was able to make it into the management side of aviation solely due to my internship. It really saved my bacon when I knew numerous guys on the street but I was still able to provide for my family.