Vistara airlines and Air India to merge, says Singapore Airlines after its board approves merger. CITY UPDATES Vistara airlines and Air India to merge, says Singapore Airlines after its board approves merger. The Bengaluru Live November 29, 2022 4:30 PM 0 NEW DELHI: Vistara airlines and Air India to merge, says Singapore Airlines after its board approves merger. Read More Read more about Vistara airlines and Air India to merge, says Singapore Airlines after its board approves merger.