Aviation turbine fuel, the refined kerosene that keeps every Indian airline in the air, has just doubled in price. A kilolitre of ATF in Delhi now costs Rs 2,07,341. Last month it cost Rs 96,638. That is a 115 percent increase in 30 days. It has never been this expensive in Indian aviation history. And you, the passenger sitting in seat 23B on your next IndiGo or Air India flight, are going to feel every rupee of it.

Here Is How the Math Works Against You

Jet fuel accounts for 40 to 45 percent of an airline's total operating costs under normal conditions. When that input doubles in price, airlines face a stark and immediate choice. Absorb the loss and bleed cash until operations become unviable. Cut routes that no longer make economic sense. Or pass the cost to passengers through higher base fares and fuel surcharges.

They will do all three. But the part that affects you most directly is the third.

Consider a Delhi to Mumbai flight, one of the busiest and most price-competitive routes in Indian aviation. Before the Iran war began in late February, a reasonable economy fare on this route could be found in the Rs 3,500 to Rs 6,000 range for advance bookings. IndiGo, Air India, and Akasa were all competing aggressively on price on this corridor.

Those days are over for now.

Airlines had already imposed fuel surcharges of Rs 150 to Rs 200 per ticket last month in response to the initial fuel price increases following the Strait of Hormuz closure. Those surcharges are now expected to be revised significantly upward following Wednesday's April pricing announcement. On top of the surcharge revision, base fares on high-demand routes are being recalibrated to reflect the new cost reality.

The Fare Cap Is Gone

The one regulatory protection that had been keeping a ceiling on what airlines could charge you was removed on March 21, 2026. The domestic fare cap of Rs 18,000 per ticket, which had been in place as an emergency measure, is no longer in force. Airlines now have no regulatory ceiling on ticket prices.

Airlines have made their position clear to the government. They will support fare caps only if their input costs are similarly capped. Since the government has provided no ATF excise duty relief and no VAT relief from major states including Delhi and Mumbai, fare caps without cost caps are not something airlines will accept. With ATF at Rs 2,07,341 per kilolitre and no relief in sight, every airline in India is in survival pricing mode.

What Routes Are Most at Risk

Not every route will see the same impact. High-frequency, high-demand metro corridors like Delhi-Mumbai, Delhi-Bangalore, and Mumbai-Bangalore have enough passenger volume and pricing power for airlines to recover costs through higher fares while maintaining operations. You will pay more on these routes. Significantly more. But the flights will exist.

The routes that are genuinely at risk of suspension or severe frequency reduction are the thinner tier-2 and tier-3 city connections. A flight from Patna to Hyderabad or Bhubaneswar to Delhi with limited passenger loads and constrained fare potential simply may not be economically viable for an airline paying Rs 2,07,341 for every 1,000 litres of fuel. Airlines are evaluating every route against current fuel costs and projected demand. Those that do not clear the threshold will be cut.

The Rupee Makes Everything Worse

The ATF price shock does not exist in isolation. The rupee crossed 95 per dollar for the first time in history this week, its worst level ever. Most airline costs are dollar-denominated. Aircraft leases, maintenance, spare parts, and international fuel purchases are all priced in dollars. When the rupee weakens, every dollar-denominated cost becomes more expensive in rupee terms even before the ATF price change is factored in.

An airline that was paying Rs 83 per dollar for its aircraft lease costs in early 2026 is now paying Rs 95 per dollar for the same costs. That is a 14 percent increase in rupee terms on costs that have nothing to do with fuel. Stack that on top of a 115 percent fuel price increase and you begin to understand why Air India CEO Campbell Wilson warned last month that the financial impact of the crisis is yet to be fully felt and that airlines may have to adjust depending on how fuel costs, airfares, and customer demand moves.

What You Should Do Right Now

If you have travel coming up in April or May 2026, the single most useful thing you can do is book now rather than waiting. Fares are going to move upward as airlines revise their pricing structures in response to the April ATF announcement. The longer you wait, the more you will pay.

If you are flexible on dates, mid-week travel and early morning or late-night departures will continue to offer lower fares than peak-time weekend flights on major routes. If you are not flexible, budget accordingly for fares that may be 30 to 50 percent higher than what you would have paid in January or February before the Iran war began reshaping every cost input in Indian aviation.

Air India's Wilson captured the passenger demand dilemma precisely from the airline side when he said not every customer is willing to pay higher airfares and that there is a limit to how high airlines can price before demand drops. That limit exists. But it is considerably higher than where fares were six weeks ago. And it is about to be tested.

The cheapest seats on your Delhi to Mumbai flight are going to cost you more in April than they did in March. How much more depends on how quickly airlines revise their pricing and how aggressively they compete with each other on the routes where competition remains viable. What is not in question is the direction. ATF has doubled. Your ticket price is following.

ATF pricing data is sourced from IOC's published April 2026 pricing for non-scheduled operators. Actual ticket prices depend on airline pricing decisions, route demand, booking timing, and competitive dynamics. Scheduled carrier ATF pricing will be announced separately. This article is for informational and educational purposes only and does not constitute financial advice.