India’s Wide-Body Window

Unit cost falls as sectors lengthen, because the cost of a departure is spread over more seat kilometres. Scale IndiGo's published unit cost across the corridors and ask a different question: how far could fares fall before each stops covering what it costs to fly?

The Gulf has the least room of any corridor, and on these numbers it does not cover its cost today. Europe could absorb a fifth off the fare and still clear.

This chart is one of the three findings that moved the recommendation off "Gulf first". It does not say the Gulf stops mattering: the corridor is still where the traffic and the contested revenue are. It says the aircraft should not be pointed at it, because the sectors are too short to carry their own cost and there is no entitlement to fly more of them anyway.

This corroborates the chart before it from an unrelated direction. The profit pool models margin upward from an EBITDAR anchor; this scales cost downward from a published CASK. They share nothing but the corridor distances, and they rank the corridors the same way. A test asserts they keep agreeing.

Pivot 1. This chart, the bilateral ceiling and the capacity arithmetic together moved the recommendation. It was "reclaim the Gulf corridor first" until three separate lines of evidence said the aircraft cannot go to Gulf airports: no entitlement to fly them on, the worst unit economics on the map, and an order book sized for a network a quarter longer than this one. How this analysis changed

Headroom, not breakeven against a flat yield. Yield per RPK falls with stage length, so holding it constant across an 11,766 km sector flatters long-haul. Reporting the tolerance instead leaves the unknown on the reader’s side of the line. There is no net present value anywhere in this project for the same reason.

The result moves with the load factor chosen. At the international 81.1% the Gulf sits about four points under cost; at IndiGo’s system 84.8% it comes out near breakeven. The ordering across corridors does not change either way, and the ordering is what the recommendation uses.

Count what the firm order books can actually fly and the answer inverts. The 140 wide-bodies on order carry roughly twice the capacity Indian carriers need to hold their current share of a 2030 market. On today's network shape they would fly half empty of purpose.

They only clear if the average sector lengthens by about a quarter, from 3,400 kilometres to nearer 4,300, or if Indian carriers take share well past parity, or some mix of the two. That is the recommendation restated in capacity terms: these aircraft are not bought to carry more of the same traffic, they are bought to carry it further.

Block speed and sector length here are computed from DGCA's own aircraft-kilometre and aircraft-hour columns, not assumed. Air India blocks at 698 km/h across a 5,316 km network and IndiGo at 656 km/h across 2,643 km, which is the physical relationship you would expect and a reason to trust the columns.

Capacity in ASK, not seats: a seat is not capacity until you say how far and how often it flies, and this case turns on how far. Block speed is computed from DGCA’s own aircraft-kilometre and aircraft-hour columns rather than assumed.

The book is treated as net additional capacity, which overstates it: some aircraft replace retirements already inside the baseline. No public retirement schedule exists for either carrier, so the overstatement cannot be sized, and the absorption requirement is therefore a floor rather than a ceiling.