USA 3000 offers you round trip tickets from PUJ:
Baltimore 377 USD
Chicago - 367 USD
Cleveland - 367 USD
Detroit - 357 USD
Philadelphia - 367 USD
Pittsburg - 367 USD
Baltimore 377 USD
Chicago - 367 USD
Cleveland - 367 USD
Detroit - 357 USD
Philadelphia - 367 USD
Pittsburg - 367 USD