Antonyms of adj unlucky

2 senses of unlucky

Sense 1
unlucky (vs. lucky), luckless -- (having or bringing misfortune; "Friday the 13th is an unlucky date")

lucky (vs. unlucky) -- (having or bringing good fortune; "my lucky day"; "a lucky man")
        => apotropaic -- (having the power to prevent evil or bad luck)
        => hot -- (having or bringing unusually good luck; "hot at craps"; "the dice are hot tonight")
        => serendipitous -- (lucky in making unexpected and fortunate discoveries)

Sense 2
doomed, ill-fated, ill-omened, ill-starred, unlucky -- (marked by or promising bad fortune; "their business venture was doomed from the start"; "an ill-fated business venture"; "an ill-starred romance"; "the unlucky prisoner was again put in irons"- W.H.Prescott)

INDIRECT (VIA unfortunate) -> fortunate -- (having unexpected good fortune; "other, less fortunate, children died"; "a fortunate choice")

Similarity of adj unlucky

2 senses of unlucky

Sense 1
unlucky (vs. lucky), luckless -- (having or bringing misfortune; "Friday the 13th is an unlucky date")
       => hexed, jinxed -- ((usually used colloquially) causing or accompanied by misfortune)
          Also See-> unfortunate#1

Sense 2
doomed, ill-fated, ill-omened, ill-starred, unlucky -- (marked by or promising bad fortune; "their business venture was doomed from the start"; "an ill-fated business venture"; "an ill-starred romance"; "the unlucky prisoner was again put in irons"- W.H.Prescott)
       => unfortunate (vs. fortunate) -- (not favored by fortune; marked or accompanied by or resulting in ill fortune; "an unfortunate turn of events"; "an unfortunate decision"; "unfortunate investments"; "an unfortunate night for all concerned")