Antonyms of adj flightless

1 sense of flightless

Sense 1
flightless -- (incapable of flying)

INDIRECT (VIA wingless) -> winged -- (having wings or as if having wings of a specified kind; "the winged feet of Mercury";)

Similarity of adj flightless

1 sense of flightless

Sense 1
flightless -- (incapable of flying)
       => wingless (vs. winged) -- (lacking wings)