Low cost and traditional airlines carriers in aviation have some difference.
Low cost airlines carriers are cheaper than traditional ones. That lower price also brings the fact that passengers have less additional services.
The basic difference between low cost and traditional airlines carriers is that low cost ones minimize costs in all possible ways. These compromises do not affect on flight safety, but do affect on passenger comfort.
Before deciding to travel with low cost airlines carriers you need to compare what you get and what you lose compared to traditional ones.
Most traditional airlines carriers on the other hand, include the items listed above. They all include cabbin baggage (size 55x40x25cm). On some flights, the meal is included in the price, while some airlines have non-meal fares.