Business and first class flights often come with a higher price tag, but it's worth it to get a more comfortable flight. Economy class in air travel is usually not as comfortable as the other classes, and you can save a lot of money by choosing economy. For example, a round trip from Houston to Europe can cost between $1,068 and $1,394 in economy class, but it'll cost between $2,346 and $3,964 in business class. Additionally, business class passengers have more space and are typically more comfortable than the average person in economy class. Long flights can be really uncomfortable if you're in economy class, so it's definitely worth spending a little extra money to get a nicer flight.