The Collaborative International Dictionary of English v.0.48:

Skyward \Sky"ward\, a. & adv.
   Toward the sky.
   [1913 Webster]

WordNet (r) 3.0 (2006):

skyward
    adv 1: toward the sky; "look skywards!" [syn: skyward,
           skywards]
    adj 1: directed toward heaven or the sky; "the soul in its
           heavenward flight" [syn: heavenward, skyward]

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "skyward":
   above, abovestairs, airward, aloft, aloof, heavenward, high,
   high up, in the air, in the clouds, on high, on stilts,
   on the peak, on tiptoe, over, overhead, straight up, tiptoe,
   to the zenith, up, up attic, up north, up steps, upalong, uphill,
   uphillward, uplong, upstairs, upstream, upstreamward, uptown,
   upward, upwards, upwith