Industrial policy and supply chains 2026-04-26 10 minute read

India Aviation 2026: Duopoly, Order Book, and the Capacity Bottleneck

IndiGo and the Tata Air India group together carry close to nine in every ten domestic seats in India, while a fleet of 1,200 aircraft on order, a Pratt and Whitney powder metal grounding, and an airport build led by Adani and GMR set the operating envelope through fiscal 2027.

India crossed 161 million domestic air passengers in calendar 2024, up 16 percent year on year, becoming the third largest domestic market in the world after the United States and China. The structure of that market is no longer fragmented. IndiGo held 62 percent share in April 2025 according to DGCA monthly traffic data, the Tata owned Air India group (Air India, Air India Express, AIX Connect, and Vistara before the November 2024 merger close) held about 26 percent, SpiceJet ran near 4 percent, and Akasa Air pushed past 4 percent. The next two years are defined by three forces. First, an order book of more than 1,200 firm aircraft between IndiGo (500 A320 family in June 2023, 30 A350-900 in April 2024, and a running ATR72-600 program) and Air India (470 frames split 250 Airbus and 220 Boeing in February 2023). Second, a Pratt and Whitney GTF powder metal recall that grounded more than 70 IndiGo A320neos through 2024 and forced costly wet leases. Third, an airport capacity build led by Adani at Mumbai, Ahmedabad, Lucknow, Mangaluru, Jaipur, Guwahati, Thiruvananthapuram, and Bengaluru, and by GMR at Delhi, Hyderabad, and the new Goa Mopa terminal. The capital allocation question for Tata Sons, the leasing exposure for AerCap and SMBC Aviation Capital, and the bilateral capacity stance of the Ministry of Civil Aviation against the United States, the United Arab Emirates, and Singapore now all run through this duopoly.

The 2024 traffic step and the duopoly that owns it #

DGCA monthly statistics put domestic scheduled passengers at 161.3 million in calendar 2024, against 138.9 million in 2023, a 16.1 percent year on year jump that placed India third in the world behind the United States and China. International passengers handled at Indian airports moved past 70 million in fiscal 2024 per the Airports Authority of India annual report, with Delhi, Mumbai, and Bengaluru taking the bulk of widebody traffic. IndiGo carried more than 100 million domestic passengers in calendar 2024, the first Indian carrier ever to cross that mark, at a load factor north of 86 percent. Air India and Air India Express together carried roughly 40 million domestic passengers, while SpiceJet and Akasa filled the residual.

The DGCA share table for April 2025 reads as a duopoly with two fringe carriers. IndiGo at 62 percent, Air India group at about 26 percent (Air India, Air India Express, AIX Connect, and Vistara bookings absorbed at the November 2024 merger close), Akasa at 4.7 percent, SpiceJet at 4.1 percent, and the rest below 3 percent. April 2019 looked very different: IndiGo at 49 percent, Air India at 13 percent, SpiceJet at 15 percent, GoAir at 9 percent, Vistara at 5 percent. Six years on, two groups have absorbed essentially all of the share that Jet, GoAir, and the long tail used to hold. The Competition Commission of India cleared the Air India and Vistara merger in September 2024, with Singapore Airlines taking 25.1 percent of the combined entity.

Carrier	April 2019 share	April 2022 share	April 2024 share	April 2025 share
IndiGo	49.0 percent	57.0 percent	60.6 percent	62.1 percent
Air India group	13.0 percent	16.0 percent	25.5 percent	26.4 percent
SpiceJet	15.0 percent	9.0 percent	5.4 percent	4.1 percent
Akasa Air	0.0 percent	0.0 percent	4.4 percent	4.7 percent
GoAir or Go First	9.0 percent	9.0 percent	0.0 percent	0.0 percent
Vistara (pre-merger)	5.0 percent	8.0 percent	9.7 percent	merged into Air India
Other	9.0 percent	1.0 percent	1.0 percent	2.7 percent

Domestic market share by carrier, monthly DGCA traffic data. Air India group April 2025 includes Air India, Air India Express, AIX Connect, and Vistara codeshare absorbed at merger close.

IndiGo: the 1,400 frame order book and the GTF problem #

IndiGo (BSE listed as InterGlobe Aviation) entered fiscal 2026 with the largest single carrier order book in commercial aviation history. The June 2023 Paris Air Show order for 500 A320 family aircraft (a mix of A320neo, A321neo, and A321XLR) added to a residual book above 480 frames from earlier orders, taking firm narrowbody backlog past 900 aircraft. In April 2024 IndiGo announced a firm order for 30 A350-900 widebodies with options for 70 more, first deliveries scheduled for fiscal 2027. A separate ATR72-600 program lifted regional turboprop deliveries past 70 frames over fiscal 2024 and 2025. Operating fleet at the close of fiscal 2025 sat at roughly 410 aircraft per the annual report, against a target run rate above 600 aircraft by fiscal 2030.

The Pratt and Whitney GTF (PW1100G geared turbofan) powder metal recall is the single largest operating constraint. Pratt and Whitney's parent RTX disclosed in its third quarter 2023 10-Q that a powder metal contamination issue would force accelerated inspections of high pressure turbine and compressor disks across the GTF fleet, with peak aircraft on ground (AOG) running through 2024 and 2025. IndiGo disclosed more than 70 grounded A320neos at peak in early 2024, against an operating fleet of around 360 frames. Industry standard math puts the all in cost of a parked aircraft at USD 15 to 20 million per year once lost contribution margin, lease payments, and crew carrying are counted, implying exposure above USD 1 billion annually at peak AOG. IndiGo's response combined wet leases of A320ceo and Boeing 777 frames (a 777 wet lease for international routes from Damojh Airlines and a Norse Atlantic 787 lease through 2024 and 2025), accelerated A321neo introductions to recover seat capacity, and a compensation negotiation with Pratt and Whitney disclosed in fiscal 2024 quarterly filings.

Air India: the 470 aircraft turnaround and the LCC integration #

Tata Sons closed its acquisition of Air India from the Government of India in January 2022 for an enterprise value of roughly USD 2.4 billion, including USD 0.4 billion in cash and assumption of USD 2.0 billion of debt, with the residual parked at Air India Assets Holding Limited. The February 2023 order announcement, signed simultaneously with Airbus and Boeing, covered 250 Airbus aircraft (210 A320neo family plus 40 A350) and 220 Boeing aircraft (190 737 MAX, 20 787, and 10 777X), totaling 470 firm frames with options for an additional 370. Manufacturer list price totals exceeded USD 70 billion, with industry standard discount math putting the cash equivalent closer to USD 35 to 40 billion over the delivery window. Tata Group statements trace a turnaround capex line that supports cabin retrofits, digital revenue management, and a Hyderabad maintenance campus partnership with Singapore Airlines Engineering Company.

Carrier consolidation is now close to complete. Air India Express, the legacy low cost subsidiary, merged with the former AirAsia India (rebranded AIX Connect) in October 2024, creating a single low cost arm of around 90 narrowbody aircraft. The Vistara into Air India merger closed November 12, 2024, with Singapore Airlines taking a 25.1 percent stake and committing further capital up to roughly INR 31 billion (about USD 360 million). The combined Air India group now operates more than 300 aircraft across full service and low cost arms, against IndiGo's 410. Where IndiGo still leads is unit economics: Air India's cost per available seat kilometer (CASK) sits roughly 25 to 30 percent above IndiGo's per fiscal 2025 disclosures, a gap that Tata management has publicly committed to close through fleet renewal, simplified operations, and digital cost outs by fiscal 2028.

Airport capacity: Adani, GMR, and the bottleneck question #

Airport capacity, not aircraft capacity, is the binding constraint on India aviation through fiscal 2027. Mumbai Chhatrapati Shivaji Maharaj International handled 52.8 million passengers in fiscal 2024 against designed capacity of 50 million, with the Adani group having taken majority control of GVK's Mumbai International Airport stake in 2021 and operationally launched Navi Mumbai International for commercial flights in fiscal 2026 to absorb the overflow. Delhi Indira Gandhi International handled 73.7 million passengers in fiscal 2024, with GMR led Delhi International Airport Limited completing the Terminal 1 rebuild and Terminal 3 expansion that lifted capacity to 100 million. Bengaluru Kempegowda crossed 37.5 million passengers in fiscal 2024 with Terminal 2 phased in through 2023 and 2024 (Adani took 64 percent of BIAL from Fairfax in 2024).

The Adani Airports portfolio now spans Mumbai (74 percent), Navi Mumbai, Ahmedabad, Lucknow, Mangaluru, Jaipur, Guwahati, Thiruvananthapuram, and Bengaluru, totaling more than 240 million annual handling capacity once full Navi Mumbai phasing completes. GMR runs Delhi, Hyderabad, and Goa Mopa (the new Manohar International, opened January 2023). Chennai and Kolkata are operated by the Airports Authority of India directly. Duty free at Mumbai consolidated under Adani at 74 percent of MIAL Duty Free Services. Adani disclosed airport segment revenue of INR 92 billion in fiscal 2024, against capex commitments above INR 800 billion through fiscal 2028 across all eight Adani airports plus Navi Mumbai. The AAI's own pipeline includes greenfield development at Hollongi (Itanagar), Donyi Polo, and brownfield expansions at Patna, Pune, and Srinagar.

Airport	Operator	FY24 passengers	Designed capacity	Major program
Delhi DEL	GMR (DIAL)	73.7 million	100 million	Terminal 1 rebuild, Terminal 3 expansion
Mumbai BOM	Adani (MIAL)	52.8 million	50 million	Navi Mumbai NMIA opening fiscal 2026
Bengaluru BLR	Adani (BIAL, 64 percent)	37.5 million	65 million	Terminal 2 phased open 2023 and 2024
Hyderabad HYD	GMR (GHIAL)	25.4 million	34 million	Phase 1 expansion completion 2024
Chennai MAA	Airports Authority of India	22.6 million	35 million	Phase 2 expansion completion 2023
Kolkata CCU	Airports Authority of India	21.9 million	26 million	AAI led expansion through fiscal 2027
Ahmedabad AMD	Adani (SVPI)	12.8 million	16 million	New domestic terminal program

Airport passenger throughput and capacity, FY24. Source: Airports Authority of India annual report, DGCA monthly traffic, operator disclosures (GMR DIAL, Adani Airports, BIAL).

Costs, fuel taxes, and the bilateral capacity stance #

Aviation turbine fuel taxation in India remains a state level lever. Maharashtra cut state VAT on ATF from 25 percent to 18 percent in fiscal 2024 and Karnataka cut from 28 percent to 18 percent at Bengaluru airport, while several states (Delhi, Tamil Nadu, Telangana) sit closer to 1 to 5 percent. The pre tax ATF benchmark moves with Brent and the rupee. RBI macro data put the rupee at INR 84 to 85 across most of fiscal 2025, while Brent averaged USD 80 to 85 per barrel, leaving Indian carrier fuel cost per ASK above the global LCC peer median. Excluding ATF from the Goods and Services Tax framework remains a Federation of Indian Airlines policy ask, with the GST Council having explicitly retained ATF outside the GST net through fiscal 2026.

Bilateral air services agreements are the second binding capacity lever, particularly on international routes. The India United States open skies agreement caps no flights but limits gateways through slot availability. The India United Arab Emirates bilateral remains capped near 65,000 weekly seats per side under the 2014 framework, with Indian carriers pushing for incremental Mumbai, Delhi, and Bengaluru gateway slots. The India Saudi Arabia bilateral was expanded in 2024, and the India Singapore bilateral remains a frequent subject of Air India and IndiGo widebody planning. The Ministry of Civil Aviation under the Bureau of Civil Aviation Security framework vets route awards through DGCA traffic rights tables. The bilateral cap has historically benefited Emirates, Etihad, Qatar Airways, and Singapore Airlines on India outbound traffic, while constraining Indian carrier widebody utilization, an asymmetry the Air India and IndiGo widebody orders are designed to close over fiscal 2027 to 2030.

Implications: leasing, MRO, REITs, and Tata capital #

Aircraft leasing is the first downstream beneficiary. AerCap (the largest global lessor post the GE Capital Aviation Services merger of 2021) holds substantial India narrowbody exposure, as do SMBC Aviation Capital, BOC Aviation, and Avolon. Their 2024 fleet reports flag India as one of the top three growth geographies for next decade narrowbody placements. The GIFT City IFSC aviation leasing framework, established by the International Financial Services Centres Authority, has attracted more than 30 lessor entities by 2024, although the bulk of effective fleet still books through Ireland and Singapore. MRO capacity is the second downstream node. Air India's Bengaluru and Hyderabad MRO investments through the Singapore Airlines Engineering joint framework are sized above USD 0.5 billion across fiscal 2025 to 2028. IndiGo has signaled an MRO buildout in tandem with its A350 induction.

For Tata Sons, the Air India turnaround is the single largest capital allocation line outside of Tata Steel and Tata Electronics. Public commentary from the Tata Sons chair through 2024 and 2025 places combined Air India equity plus aircraft pre delivery payments above USD 5 billion, against a return horizon into fiscal 2030. For Adani, the airports book is the second largest infrastructure cash flow line after ports and supports the broader Adani Enterprises capital stack and any forward looking InvIT or REIT carve out. For sovereign wealth and equity capital, the read across is sequenced. Through fiscal 2026 the trade is GTF normalization (IndiGo earnings recovery), airport pax growth (Adani Airports book value), and Tata Air India CASK convergence. Through fiscal 2027 the trade shifts to widebody utilization on bilateral expansions, MRO localization, and the next round of LCC versus FSC bifurcation as IndiGo Stretch (premium narrowbody) competes against Air India full service narrowbody on metro to metro thicker pairs.

Sources #

Cite this brief

@misc{hossen2026indiaaviationduopoly2026,
  author = {Hossen, Md Deluair},
  title  = {India Aviation 2026: Duopoly, Order Book, and the Capacity Bottleneck},
  year   = {2026},
  url    = {https://deluair.com/consultancy/insights/india-aviation-duopoly-2026},
  note   = {Deluair Consultancy briefs}
}

Hossen, M. D. (2026). India Aviation 2026: Duopoly, Order Book, and the Capacity Bottleneck. Deluair Consultancy briefs. https://deluair.com/consultancy/insights/india-aviation-duopoly-2026

Hossen, Md Deluair. "India Aviation 2026: Duopoly, Order Book, and the Capacity Bottleneck." Deluair Consultancy briefs, 2026-04-26. https://deluair.com/consultancy/insights/india-aviation-duopoly-2026.

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