The word spaceflight is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 25
Highest Scoring Words With Friends™ Play In The Letters spaceflight
:
Seven Letter Word Alert: (46 words)
achiest, aflight, aiglets, aitches, alethic, alights, aplites, aseptic, cagiest, caliphs, caplets, castile, catfish, chalets, chapels, chaplet, chipset, elastic, ethical, filches, fleapit, flights, gelcaps, haglets, halites, haplite, haptics, hepatic, laciest, latches, ligates, patches, pelagic, pigface, piglets, pilates, pitches, plastic, plicate, plights, satchel, selfact, sleight, special, spicate, splatch