Business the play 40,000 pts Air India via DEL (Star Alliance partner award) — no fuel surcharge
Routed CCU–DEL–DOH on Air India mainline (~2,399 flown miles), the within-Atlantic 2,001–4,000-mile band prices business at 40,000, surcharge-free — 3,000 under Avios's Qsuite on paper. But it's a narrowbody AI cabin via a Delhi detour, not a nonstop Qsuite; the points win, the seat doesn't. Chain-funded HDFC 2:1 / Bonvoy 3:1.
Feed it: 20,000 Axis EDGE Miles (1:2) · 40,000 SBI Travel Credits (1:1) · 1,00,000 Axis EDGE Reward Points (5:2)
Air India mainline via DEL (Star Alliance) — no AI nonstop from Kolkata
50,000 points on the April-2026 Gulf tier (up from 31,000), plus a Delhi connection on Air India mainline. That's more points than Avios's 43,000 Qsuite nonstop AND Aeroplan's 40,000 — on this corridor Maharaja is the overpriced routing in every cabin.
Feed it: 50,000 IndusInd Reward Points (1:1) · 25,000 Axis EDGE Miles (1:2) · 50,000 ICICI Reward Points (1:1)
Qatar Airways nonstop — Qsuite on widebody rotations (oneworld partner award)
CCU–DOH's 2,326 flown miles sit in the 2,001–3,000-mile band: 43,000 Avios one-way for Qatar business on the nonstop, post-15-Dec-2025 chart — a Qsuite when the rotation is an A350/787, a narrowbody flatbed on the A320. The band jump above 2,000 miles is steep, but it's the corridor's only fixed-price flat bed on the direct flight. Budget Qatar's carrier charges; no peak/off-peak on partner awards.
Feed it: 43,000 HDFC Reward Points (1:1) · 86,000 Amex Membership Rewards (2:1) · 43,000 HSBC Reward Points (1:1)
Economy the play 12,000 pts Air India via DEL (Star Alliance) — no AI nonstop from Kolkata
Doha sits on the April-2026 chart's flat 12,000-point Middle-East tier, priced by zone not metro — but AI mainline flies no CCU–DOH nonstop, so it's a Delhi backtrack against Qatar's own 5-hour direct. 500 points under Avios and via a detour; verify the connecting itinerary prices at the flat zone rate before transferring.
Feed it: 12,000 IndusInd Reward Points (1:1) · 6,000 Axis EDGE Miles (1:2) · 12,000 ICICI Reward Points (1:1)
Qatar Airways nonstop (oneworld partner award), distance band
14,500 Avios in the 2,001–3,000-mile band for the Qatar nonstop — a fair economy price a hair over Maharaja's 12,000, without the Delhi detour. Weigh it against this corridor's cash fares before transferring; economy is a close call, the business seat is where the value lives.
Feed it: 14,500 HDFC Reward Points (1:1) · 29,000 Amex Membership Rewards (2:1) · 14,500 HSBC Reward Points (1:1)
Air India via DEL (Star Alliance partner award) — no fuel surcharge
30,000 in the 2,001–4,000-mile band for AI economy CCU–DEL–DOH, surcharge-free — twice Avios's 14,500 for a worse routing. Aeroplan is a business instrument on this corridor; the economy cell exists only for balances stranded there.
Feed it: 15,000 Axis EDGE Miles (1:2) · 30,000 SBI Travel Credits (1:1) · 75,000 Axis EDGE Reward Points (5:2)