I have a continental airlines Mastercard. There is a fee of I think $65 or $85, but the first year is free, for this you get free baggage (one per person on your reservation) on their flights, plus 25,000 bonus miles for opening a card (which is enough for a flight within the mainland US). We have one and use it for everything and will be flying the four of us to Hawaii for the second time this summer. It would only be worth it if you use it often since there is a fee involved, but I'm thinking college tuition would certainly add up.