Axis Atlas 5X vs HDFC Infinia 10X SmartBuy: which miles card actually saves more on Indian flights?
By Vihaan Patel (Vihaan Patel covers the intersection of travel and digital payments — Indian OTAs, airline-direct booking flows, UPI vs credit-card surcharges, RBI tokenisation rules and the booking-funnel mechanics that quietly cost (or save) you money.) · Published · 12 min read
The Axis Atlas and HDFC Infinia are the two credit cards Indian frequent flyers obsess over most in 2026. Both earn well on travel spends and transfer to airline miles. The question is which one wins on real IndiGo and Air India bookings — and whether pairing either card with AI fare search changes the calculation.
TL;DR — the short answer
For most Indian frequent flyers who book mostly IndiGo, the Axis Atlas earns better on travel spends — its 5X Edge Miles on travel category (including IndiGo direct bookings) is the main reason people chase it. For Air India Business Class and SmartBuy-eligible hotel bookings, HDFC Infinia's 10X SmartBuy multiplier is hard to beat, and it also earns well on Air India through the SmartBuy portal. The honest answer is that these cards target slightly different booking behaviours, and the best one for you depends on how you actually book. AI flight search tools change the equation a little — more on that below.
Note: credit card terms, earn rates, and annual fees change. Verify the current offer sheet on the issuer's official site (axisbank.com and hdfcbank.com) and read the most recent terms-and-conditions document before applying.
Axis Atlas: how the 5X Edge Miles earn works in practice
Axis Atlas positions itself as India's travel-miles card. The headline is a 5X Edge Miles earn rate on travel spends — which covers airline bookings (including IndiGo's official website and app, Air India direct, and Akasa), hotel bookings, and travel agents. On non-travel retail spends you earn at a lower base rate.
Edge Miles transfer to a growing list of airline programmes — Air India Flying Returns, Singapore Airlines KrisFlyer, InterMiles, Club Vistara (now merged into Flying Returns), British Airways Avios, and others. Transfer ratios matter: not all Edge Miles convert 1:1 to airline miles. Check the current Axis Bank Edge Miles partner list and transfer ratios before banking on a specific programme — these have changed before and will change again.
A real-world example: a ₹15,000 IndiGo domestic booking (round-trip, two people, a typical mid-range domestic fare) at 5X on travel would earn a noticeably higher Edge Miles balance than the same spend on a card earning 1X. Over a year of frequent domestic travel, that accumulation is meaningful enough to fund at least one partial redemption.
The catch: Axis Atlas has an annual fee that is meaningful (check the current fee on the bank's site — it was in the range of ₹5,000–₹5,000+GST in recent years, subject to change). Whether the miles earned justify that fee depends entirely on your annual travel spend volume. If you spend ₹3–4 lakh or more on travel in a year, the fee is usually covered by the miles value. Below that, the maths gets tighter.
HDFC Infinia: the SmartBuy 10X multiplier and Air India stacking
HDFC Infinia is an invite-only card with a high fee, but it has one feature that makes miles enthusiasts very attentive: the SmartBuy portal. Booking Air India tickets through HDFC SmartBuy earns up to 10X reward points, which convert to air miles at a fixed ratio. For Air India Business Class tickets — where the cash value can run into the tens of thousands per booking — 10X earning is a genuinely large accumulation.
Infinia points transfer to Flying Returns (Air India) and to Singapore Airlines KrisFlyer, among others. The key thing to know: Infinia reward points are not the same as Flying Returns miles until you initiate a transfer, and there are transfer minimum thresholds and occasional processing delays. Plan your redemption with enough lead time.
The SmartBuy advantage has a flip side: you are booking through HDFC's portal, not Air India's own site. This occasionally causes issues with seat selection, upgrade eligibility, and post-booking changes. I always verify the ticket number in the Air India app after a SmartBuy booking to confirm it was ticketed correctly. Most of the time it works fine — but I have seen cases where a SmartBuy booking did not show up in the airline's system for 24–48 hours.
Infinia also earns well on hotel spends through SmartBuy (again, 10X on eligible properties), which is useful if you are the type of traveller who combines flight and hotel bookings in the same loyalty ecosystem.
How AI flight search changes the card stacking strategy
Here is the part that is underappreciated: the card you earn miles on is most valuable when you have already found the best fare. If you book a suboptimal cash fare on a cards-eligible channel just to earn miles, you are giving up more in fare premium than you are gaining in miles.
This is where AI flight search actually matters for miles card users. Tools like FlightGPT compare fares across sources quickly — you can see whether IndiGo's direct site, MakeMyTrip, or Cleartrip is cheapest on a given date before deciding where to book. Miles card users often default to booking on the airline site (to qualify for the 5X travel category earn on Axis Atlas) without checking if the OTA has a meaningful lower fare. Sometimes the OTA is ₹500–₹1,000 cheaper per ticket — the miles difference on a ₹8,000 base fare is worth perhaps ₹50–₹100 in miles value, which the lower OTA fare more than offsets.
The practical workflow: search on FlightGPT first, identify the cheapest fare and source, then calculate whether the booking channel that earns you more miles is worth the fare difference. If the airline direct price and the OTA price are within ₹200–300, always book direct — you get better service for changes, better seat maps, and the full miles earn. If the OTA is ₹800+ cheaper, take the cash saving.
IndiGo-specific: which card earns better?
IndiGo does not have its own full-service frequent flyer programme the way Air India does — IndiGo has a partnership arrangement with InterMiles (formerly Jet Privilege, now independent). When you book IndiGo and want to earn miles, your earning options are:
- Earn InterMiles on IndiGo by adding your InterMiles number to the booking — rate varies by fare class and route, so check the InterMiles earn chart.
- Earn credit card rewards on the booking spend — this is where the Axis Atlas 5X on travel category adds up over time.
Axis Atlas wins on IndiGo spend because of the 5X travel category earn, regardless of which specific airline you are booking. HDFC Infinia's SmartBuy advantage is specific to Air India (and hotels) — for IndiGo bookings, Infinia earns at the base rate through SmartBuy unless IndiGo is on the SmartBuy portal as an eligible merchant (check the current SmartBuy listings, as they do change).
So for a primarily IndiGo traveller: Axis Atlas is the natural pairing. For a primarily Air India traveller who books Business Class: Infinia SmartBuy is compelling. For a mixed flyer: it depends on your spend split.
The ForEx and surcharge angle that always gets missed
One thing miles enthusiasts undercount: credit card surcharges on airline bookings. IndiGo charges a convenience fee on card payments (typically in the range of ₹250–₹600 per booking depending on the channel and fare, but always check the current schedule on IndiGo's site — these fees change). Air India also has a payment gateway fee on some fare classes.
If you are booking domestically and paying with a card, that fee eats into the miles value. A few tactics: check if NEFT/UPI payment avoids the fee (IndiGo's site sometimes shows a lower final price with UPI); if so, you lose the card earn but save the surcharge, which might net out better on a cheap fare. On expensive tickets (long-haul Business, high-peak domestic) the card earning dwarfs the surcharge and the calculation clearly favours the card.
For international flights: both Axis Atlas and HDFC Infinia have foreign currency transaction fees that apply when you pay a foreign-currency fare (e.g., booking Air India to London on a USD fare). These are typically in the range of 1–3.5% of the transaction — factor that into the earn/burn calculation for international bookings. Some premium cards waive this; check your specific card's terms.
Bottom line and the combined workflow
Axis Atlas for IndiGo-heavy domestic travel, HDFC Infinia for Air India Business and SmartBuy-eligible premium bookings — that is the cleanest summary. Both cards are worth it if your travel spend is high enough to justify the annual fee, and both pair well with an AI flight search habit that ensures you are earning miles on the best available fare rather than a premium fare chosen by habit.
Before applying for either: check the current welcome bonus (both cards have had significant welcome mile bonuses in the past, which can make the first year's fee easily justified); and read the full terms on the respective bank's website. For context on where to find the cheapest fares before deciding which card to use for the booking, start on FlightGPT. Also worth reading: our guide on Flying Returns award redemptions and the Skyscanner + ChatGPT guide for flexible-date searching.
Frequently asked questions
What is the current Edge Miles earn rate on Axis Atlas for IndiGo bookings?
Axis Atlas has offered a 5X Edge Miles earn rate on travel category spends, which includes IndiGo direct bookings. The exact earn rate and the definition of the travel category are subject to change — verify the current rate on Axis Bank's website (axisbank.com) or by calling the card helpline before booking.
Does HDFC Infinia's 10X SmartBuy work for IndiGo tickets?
The 10X SmartBuy multiplier on HDFC Infinia primarily benefits Air India bookings through the SmartBuy portal. IndiGo's presence on the SmartBuy portal and any associated multiplier has varied over time — check the current HDFC SmartBuy listings at the time of booking. For IndiGo spend specifically, Axis Atlas's travel-category earn has typically been the stronger proposition.
Which airline programme should I transfer Axis Atlas Edge Miles to?
It depends on where you want to fly. Air India Flying Returns is the most natural choice for India-departing redemptions. Singapore Airlines KrisFlyer is the preferred choice if you want to redeem on SQ metal to Southeast Asia or Australia. British Airways Avios can work well for short-haul segments within Europe (the short-haul Avios pricing is distance-based and can be cheap for European hops). Check the current Axis Edge Miles partner list and transfer ratios — these have been updated before and will update again.
Should I book through OTAs to save money or direct to earn more miles?
Run the fare comparison on FlightGPT or an aggregator first. If the airline direct fare is within roughly ₹300–500 of the OTA fare, book direct — you get better post-booking service and the full miles earn. If the OTA is ₹800 or more cheaper (which does happen on competitive domestic routes), take the cash saving; the miles earn difference rarely makes up for a large fare gap on cheap tickets. On expensive tickets (₹20,000+ per person), the miles earn at 5X is more meaningful and the fare gap is proportionally smaller.
Are there credit card surcharges when booking IndiGo or Air India tickets?
Yes, both IndiGo and Air India typically charge a payment gateway or convenience fee on card transactions — the amount varies by fare class, route, and booking channel, and the airlines update these periodically. Check the payment screen during checkout for the exact current charge. On cheap domestic tickets, this fee can represent 3–5% of the base fare, which is worth factoring into your card-vs-UPI decision.
Does the Axis Atlas or Infinia fee make sense if I only fly 4–6 times a year?
At 4–6 domestic return trips a year with average fares in the ₹6,000–₹12,000 range, the annual card fee (check the current fee on the bank's site) may or may not be covered by the miles earned — it depends on your average spend per booking and which programme you transfer to. Both cards tend to justify their fees more clearly when total travel spend crosses ₹3–4 lakh annually. Below that level, a zero-annual-fee travel card might make more sense — the welcome bonus in the first year can still make either card worthwhile for a one-time application.