The industry that offers the most senior discounts is the travel industry. Everything from rental car companies and hotel chains to major airlines and cruise lines. Seniors can get up to 30% off depending on the companies' senior discount program, making vacationing possible and much more affordable. Some companies do not advertise or mention senior discounts on their websites, so it would be best to contact them to find out if they offer them. We guarantee you that the answer will be yes more often than not.