Finish your degree and go to something like this...
https://atpflightschool.com/airline-..._training.html
Expect to pay a lot of money for it.
You can conceivable get your private pilot's license in the summer if you found a GOOD instructor to get you through it. That would be flying/studying everyday.
I'd be more apt to utilize summer for your degree classes to graduate sooner instead of for flying.
Actually, I'd recommend using your summer to be a raft guide, to travel, to hike the AT or do something you can't do as easy in the career world.