Air India's US Routes Didn't Run Out of Passengers. They Ran Out of Payload.

A Boeing 777 departing Mumbai for Newark must now carry enough fuel to fly an extra 2,000 kilometres it didn't need to fly last year. Not because the route got longer. Because the shortest path through Pakistani airspace is no longer available.

That's not a scheduling problem. That's a physics problem.

Since May 2025, Pakistan has closed its airspace to Indian carriers following regional tensions. The detour — looping south over the Arabian Sea and north through Central Asia — adds two to three hours to westbound US flights. On a sector already pushing 22 hours, that matters in ways that don't show up in a load factor report.

The Breguet range equation is the culprit. On ultra-long sectors, extra fuel burn doesn't scale linearly — you must carry fuel to burn the fuel you're carrying. Cross a certain threshold and the penalty compounds hard. A 777-200LR at maximum fuel load can sacrifice four to six tonnes of payload versus a standard long-haul configuration — the equivalent of roughly 30 to 40 revenue passengers, or a cargo hold gutted of its most profitable freight. Every tonne of jet fuel added to cover the detour is a tonne of revenue that never boards.

Air India's 777-200LR has a published range of roughly 17,400 km. But maximum range and viable commercial range are different numbers. At full fuel load, usable payload drops sharply — the aircraft can fly the distance, but not with enough revenue aboard to justify the operating cost.

Three US routes have now been suspended. The routes didn't collapse because demand disappeared. They collapsed because the airspace closure pushed them past the payload-range threshold where the economics invert.

For an airline mid-transformation — 470-plus aircraft on order, Tata capital behind it — these suspensions aren't retreat. They're yield discipline. Air India is learning, expensively, which of its most ambitious routes were always marginal. Pakistan's closure didn't create that vulnerability. It just made it impossible to ignore.

The airspace will likely reopen. The question is which routes were only ever viable when the sky was shorter.