IndiGo has suspended ticket bookings for the Delhi-Baku flight but hasn't officially announced the suspension of operations.
The airline continues to operate services to Baku in Azerbaijan and Tbilisi in Georgia.
The Delhi-Baku flight duration has increased to over nine and a half hours due to a technical halt in Doha, crossing several countries on the way.
Before the shutdown of Iran and Iraq airspace, the flight duration was just over five hours.
Azerbaijan, popular among Indian tourists, has seen reduced interest due to its support for Pakistan after the Pahalgam attack and India's retaliation.
Social media campaigns have urged consumers to boycott Azerbaijan and Turkey, leading travel firms to stop bookings to these countries.
IndiGo did not respond to inquiries about the flight changes.