It seems uncontroversial to say that young people now, and for the last 25 years, have access to cheaper travel than previous generations. The network of budget airlines in Europe, Asia, and MENA is extensive; I can often find a WizzAir flight for as little as 10€ if I'm willing to fly with just a smaller carry-on. As for long-distance bus travel, FlixBus in Europe sucks in so many ways and has a monopoly over whole countries, but its tickets (if you purchase well in advance) are often cheaper than the local operators that one had to use before.