Information adapted from IMSLP
imslp.org/wiki/Template:Operas_(Tchaikovsky,_Pyotr…. "Undina" and "Mandragora" are omitted from this list, as they are not recoverable in any way close to a full version as comparted to "Voyevoda.":
The Voyevoda, Op.3 (1867–68)
The Oprichnik (1870-72)
Vakula the Smith, Op.14 (1874) -- see Cherevichki
Eugene Onegin, Op.24 (1877-78)
The Maid of Orleans (1878-79)
Mazeppa (1881–83)
Cherevichki (1885)
The Enchantress (1885-87)
The Queen of Spades, Op.68 (1890)
Iolanta, Op.69 (1891)