Why IndiGo shares are in focus today despite falling nearly 2%

Shares of InterGlobe Aviation, the parent company of IndiGo, remained under pressure on May 18 even as multiple industry indicators turned favourable for the aviation sector. The stock declined 1.79% or Rs 77.20 to Rs 4,237.70 on the NSE during morning trade, despite improving passenger traffic trends and significant VAT cuts on aviation turbine fuel (ATF) by key states.

The stock traded within a day range of Rs 4,226 to Rs 4,289.80 and currently commands a market capitalisation of around Rs 1.64 lakh crore. IndiGo’s 52-week range stands between Rs 3,895.20 and Rs 6,232.50.

Domestic air traffic shows strong recovery

India’s domestic aviation traffic has picked up meaningfully in May 2026. Average daily domestic passenger traffic rose to 5,00,366 in May 2026, compared with 4,69,396 in April 2026. The improvement indicates that higher ticket prices have not materially impacted passenger demand so far.

International air traffic also strengthened, rising around 10% month-on-month, reflecting continued recovery in outbound travel demand and stable global passenger movement despite geopolitical uncertainties.

For IndiGo, which remains India’s largest airline by market share, rising traffic volumes directly support load factors, aircraft utilisation and overall revenue momentum.

ATF VAT cuts provide major sector tailwind

Another key trigger for aviation stocks is the reduction in VAT on aviation turbine fuel by Delhi and Maharashtra.

Delhi and Maharashtra together account for an estimated 45-50% share in India’s aviation traffic from a fuelling perspective. The reduction in VAT by 18 percentage points in Delhi and 11 percentage points in Maharashtra could significantly lower operating costs for airlines if oil marketing companies pass on the benefit.

ATF remains one of the largest cost components for airlines, and any reduction in fuel taxation materially improves profitability, especially for high-volume operators like IndiGo.

Oil prices remain the key concern

Despite positive operational indicators, airline stocks continue to face pressure from rising global crude oil prices amid the ongoing Middle East conflict and Strait of Hormuz disruptions. Higher crude prices typically increase ATF costs globally, which partially offsets the benefit of local VAT reductions.

The market is currently balancing improving traffic demand and lower state taxes against elevated international oil prices and broader global volatility.

Why the stock is still under pressure

While operational data remains positive, the stock’s decline suggests investors are cautious about near-term margin pressure from global fuel prices and overall market weakness. Aviation stocks are highly sensitive to crude oil movement, currency fluctuations and geopolitical disruptions.

However, the combination of rising passenger demand, resilient ticket pricing and potential fuel tax savings keeps IndiGo firmly in focus for the sector.