Answered By Mike Killian: Discover offers a couple of cards with air miles. Check CardRatings.com under the criterion "Frequent Flyer." You will find "Escape" and "Miles" by Discover. Both offer double miles, bonus miles, similar purchase APR and more. Both require excellent credit.

Escape offers 25,000 bonus miles--1,000 bonus miles each month you make a purchase during your first 25 months, and unlimited double miles on all purchases. You can also get an additional two miles for every dollar you spend through their online shopping site. There are also enhanced travel benefits.

Miles by Discover Card, on the other hand, offers 12,000 bonus miles--1,000 bonus miles each month that you make a purchase for your first year, plus double miles on your first $3,000 in travel and restaurant purchases each year. You also receive double miles through their online shopping site with one mile for every dollar spent on all other purchases.

At the same time there are a number of other cards available and you may find one that suits your needs even more. Chase, Penfed, American Express and others offer sky miles. Some even offer up to five times the miles per dollar spent. On the other hand, some other cards have a credit score requirement of "good" rather than "excellent." But on these latter cards you will find annual fees or higher APR. Another thing to be aware of; some cards offer more miles for particular airlines, so if you have an airline of choice that may be of interest to you. You simply have to pick and choose based upon your qualifications and card use goals.

If you plan on transferring a balance, check the fee and balance transfer APR. Also don't allow an introductory offer to be the sole reason for your choice of card.