While it has been known in its current form since the 16th century, earlier references suggest that the root may have included the obsolete suffix "-velt-" (as seen in one of the spelling variants Dewilto[w]).

Conversely, there are several known toponymic analogies, as well as the fact that until the early 20th century, a person who lived in Deltuva was referred to as "deltuvis".

In 1867 Deltuva was renamed to "Konstantinovo" after Konstantin Petrovich von Kaufman, tsarist official and Governor of Vilna.

In response, the infantrymen and horsemen of the Lithuanian Armed Forces, who were engaged in combat with the Russians, brought artillery cannons to bear against them.

On 28 March 1919, the first shot was fired from a cannon at the Deltuva clergy house, which was the Red Army's operational base at the time.

In 2013, a commemorative plaque was unveiled on the old clergy house building, marking the centenary of the first artillery shell fired by the Lithuanian army in 1919.

[6] During the World War II, Deltuva was subjected to extensive bombing by Soviet Russian and Nazi German forces.

Following the end of the war and Soviet re-occupation of Lithuania, the region saw active resistance from Lithuanian partisans of the Vytis military district.