Brighton University students studying at the Hastings campus are being ignored by Southern Rail.
Students could save almost £1,200 per year if Southern Rail extended the same discounts as those in Brighton.
Their case is being taken up by Labour Parliamentary Candidate for Hastings and Rye , Sarah Owen who said: "What we should be offering is a fair deal for students. It's not your fault that your campus is spread across many towns and cities.
"If other students are getting the same privilege, you guys should too."
The original Unizone deal ran between Worthing and Brighton, but was extended in May 2014 to cover all stations to Eastbourne.
If implemented in Hastings, students could save up to £121 per month on travel.
Agathi Kleanthous studies in Hastings but lives in Eastbourne. She says that the cost of travelling is affecting every part of her life.
"Hastings is a University of Brighton Campus. We shouldn't be treated any differently because of that."
"I know a lot of people that don't turn up to lectures because of the money."
Southern rail were unavailable for comment, but said that changes in the Unizone discount are being assessed.