Final S-400 Squadron Reportedly Set for November, Closing the $5.43 Billion Deal

Five squadrons, $5.43 billion, just over eight years. If a report published on 12 July holds up, those are the final dimensions of one of India’s most consequential — and most delayed — weapons purchases: the last S-400 squadron under the contract signed with Russia in October 2018 is now slated to arrive in November 2026.

The date rests, for now, on a single report, and neither government has publicly confirmed it. But the arithmetic it would complete is well established. India signed for five squadrons of the long-range surface-to-air system in October 2018, and the delivery schedule was then stretched years out of shape by supply disruptions flowing from the Russia-Ukraine war — the reason a contract inked eight years ago still has hardware in transit.

The ledger of what has actually arrived tells the story of that slippage. The first squadron was delivered in December 2021, roughly three years after signature, and by this year three had been handed over and folded into the Indian Air Force’s operational network. Then came the long pause, as the war in Ukraine strained Russian production and logistics. The fourth squadron landed only in early June 2026 and has been reported deployed along the western frontier in Rajasthan. Set against that history, a November arrival for the fifth would mean two squadrons delivered in roughly five months — a compressed sprint to the finish line for a programme whose middle years crawled.

That final consignment matters for more than contractual tidiness. The S-400 sits at the top of India’s layered air defence, the long-range outer ring beneath which shorter-range systems operate, and the reported Rajasthan deployment of the fourth squadron shows where that coverage is being thickened: along the western frontier. A fifth squadron would let the air force complete the deployment geometry the purchase was designed around, rather than defending with four-fifths of the umbrella it paid for. Eight years after the ink dried, the difference between four squadrons and five is the difference between a plan still in delivery and a capability in place.

The number worth holding onto, though, is one: the count of sources behind the November date. Delivery timelines for this contract have moved before, and a schedule that has already absorbed years of war-driven delay can absorb more. Until the equipment is on Indian soil — or until either side confirms the date — November 2026 is a reported endpoint, not a closed contract.

What follows the last delivery is its own question. Integration of the earlier squadrons took time after each arrival, so the gap between the final consignment reaching India and the full five-squadron force standing operational will not be zero. The 2018 deal may be signed off in November; the capability it bought will take a little longer to finish arriving.