I got the Poetic "smart cover" (full coverage on body plus 3-fold magnetic cover) for my iPad Air and iPad rMini. Spent like...$6/each. They work great. Love 'em. Here is a link to it. Price is less now but appears to be the same:
Amazon.com: Poetic Slimline Case for Apple iPad Air (5th Generation iPad) Black (3 Year Manufacturer Warranty From Poetic): Electronics
Yes, I ordered mine today! I got navy blue so it was $12.95. Not sure why navy blue is almost twice as much but I just didn't want black.