Airlines charge for more than just the flight. You can expect to pay a Baggage Fee for every bag that is “checked”: $25. for the first bag, and $35. for the second bag. These charges apply for flights heading out and then again coming back.
With “budget” airlines, you will be charged a fee to reserve a seat in advance. Or you might be charged extra for an aisle seat or a window seat. If you want more legroom or a wider seat, you will need to upgrade your ticket.
Food on most airlines has been upgraded, but be prepared to pay for meals. A nice box lunch will cost between $7. to $10. The major carriers, though, still provide sodas, coffee, and juices at no charge.
When ordering a meal or alcohol on your flight, be advised that the flight attendants do not accept cash. You will need a debit card or a credit card.