AI Tools for Low-Cost Carrier Comparison in India: IndiGo vs Akasa vs Spice
By Diya Verma (Diya Verma flies from Tier-2 Indian cities and chases every possible fare hack — reposition flights, hidden-city ticketing, mileage runs and OTA bundle tricks. She has booked 200+ international trips out of Lucknow, Indore and Jaipur.) · Published · 12 min read
The cheapest headline fare on an LCC in India is almost never the real price you pay. AI tools can strip away the ancillary add-ons and give you the true all-in comparison — here is how to use them and what to watch for across IndiGo, Akasa Air, and SpiceJet.
TL;DR — The Cheapest Headline Fare Is Usually Not the Cheapest Ticket
Every Indian low-cost carrier (LCC) leads with a base fare that excludes check-in baggage, seat selection, and meals. By the time you add a 15kg bag and a specific seat, you can easily add 30–60 percent to the base price — and which airline gouges you more on bags versus seats changes route by route, season by season. AI flight search helps by pulling the all-in price comparison into one place rather than making you add items in three separate airline carts. Use it for the initial comparison, then always verify the final add-on prices on the airline's site before paying, since ancillary fees change frequently.
Why LCC Fares in India Are So Hard to Compare at Face Value
I have been burned by this more times than I want to admit. You see IndiGo at ₹2,800 and Akasa Air at ₹3,100 for the same Lucknow–Bengaluru route, book IndiGo, and then realise you needed a checked bag that costs ₹900–₹1,200 extra (check the current fee on goindigo.in — it varies by route and advance-add-on timing). Akasa Air, meanwhile, included 15kg in a bundle that was ₹3,300. You paid ₹3,700–₹4,000 all-in on IndiGo versus ₹3,300 all-in on Akasa Air.
This is by design, not accident. LCC revenue management works on 'unbundling' — keep the base fare low to win on comparison sites, then recover margin on add-ons. The strategy works because most comparison tools (and Google Flights, for that matter) default to showing the base fare. Occasional travellers who do not know to add the bag at the time of booking end up adding it at the airport for significantly more than if they had added it online.
The three Indian LCCs you are most likely to compare right now:
- IndiGo: Largest domestic carrier by market share, most routes, most frequency on trunk routes. Very competitive base fares. Ancillary fees are substantial and tiered — add baggage early and save more than adding it late. Their 'IndiGo Stretch' (legroom seat) and 'IndiGo Blue' seat categories add meaningfully to the base price on busy routes.
- Akasa Air: The youngest major carrier, growing fast, with a younger-fleet reputation and a fare structure that is arguably more transparent (frequent bundle offers that include bags). Network is smaller than IndiGo but covers most major city pairs and is expanding into tier-2 routes.
- SpiceJet: Struggling with operational and financial headwinds as of 2026 — fleet is smaller, delays have been more frequent than competitors, and their fee structure has changed several times. I'd still compare their fares but with the caveat that punctuality and rebooking flexibility are real considerations right now. Check their current operational status if you need reliability for an important trip.
How AI Flight Search Changes the LCC Comparison
A good AI flight search tool changes the comparison from 'base fare vs base fare' to 'real fare vs real fare' — at least in its better implementations.
When you search on FlightGPT, the AI layer can interpret queries like 'cheapest flight Lucknow to Bengaluru with one checked bag, morning departure' and surface results that factor in the typical ancillary structure of each airline. For standard weight bags on domestic routes, AI-powered metasearch tools increasingly incorporate the pre-added bag price into the shown fare, rather than showing you a misleading base.
Where AI genuinely helps beyond raw comparison:
- Flexible date scanning: Ask 'cheapest day this week to fly Lucknow to Bengaluru with a 15kg bag' and the AI calendar will show you the all-in estimate across dates, not just the base fare variation. A ₹400 difference in base fare between days can flip if one day has a better bag bundle deal.
- Route alternatives: If you are flexible on departure city (not uncommon for Tier-2 travellers — I often compare flying out of Lucknow vs. driving to Kanpur or Varanasi for better connection options), an AI tool handles the multi-departure query in a single chat.
- Natural language for complex criteria: 'Akasa Air direct only, morning departure, 20kg bag, refundable fare' is a natural query that would require manual filter-setting on most standard OTAs. AI search parses it directly.
The caveat: AI-powered metasearch is only as good as the real-time data behind it. Always verify the final price breakdown on the airline's own site before committing. Ancillary fees can change with seasonal pricing, and the AI may be working from a slightly lagged data point.
A Practical Comparison: Bag and Seat Fees Across the Three Airlines
I am going to give you the framework rather than specific numbers here, because these fees genuinely change — sometimes monthly. Check the current rates on goindigo.in, akasaair.com, and spicejet.com before you book. But the structure is reliable even when the exact numbers shift.
Check-in baggage: All three airlines charge for check-in baggage on base ('lite' or equivalent) fares. The earlier you add it (at time of booking vs. 24 hours before vs. at the airport), the cheaper it is on all three. IndiGo tends to have the widest spread between 'add at booking' and 'add at airport' prices — adding a bag last-minute at the IndiGo counter is significantly more expensive than adding it when you book. Akasa Air has been running bundle promotions that include bags more frequently than IndiGo. SpiceJet's baggage pricing has been less predictable.
Seat selection: All three charge for specific seat selection. Emergency-exit rows and front rows command a premium on all LCCs. The free-seat allocation (if you decline to pay) is a middle seat toward the back on IndiGo and Akasa — consistent across both. If you genuinely do not care about seat location and are travelling solo, declining seat selection saves money on every LCC.
Meals: Honestly, I skip airline meals on every domestic LCC flight in India. They are overpriced relative to airport food, and for most domestic routes under two hours, you do not need them. This is easy money to save.
Bundle deals: Akasa Air and IndiGo both offer fare bundles (IndiGo's 'Super 6E' bundle, Akasa's 'Value' and 'Flex' tiers) that include bags and sometimes cancellation flexibility at a combined price that can be cheaper than buying add-ons individually. If you know you need a bag, always compare the bundle price against base + separately added bag. The bundle is usually the better deal when you factor in timing.
When SpiceJet Is Worth Considering — and When to Skip It
SpiceJet is in the index because it still operates and still sometimes prices routes competitively. But I want to be honest about the tradeoffs as of 2026.
SpiceJet has gone through significant financial and operational turbulence over the last few years. Their fleet size is smaller than before, delays have been more frequent on some routes, and their customer service for disruption handling has been inconsistent. Their fare sales can be genuinely cheap — they have used aggressive pricing to fill seats during difficult periods.
When SpiceJet might make sense: if the route has limited alternatives, if their fare is substantially lower than IndiGo or Akasa Air and you have buffer time for delays, or if you have a SpiceJet fare bundle with flexibility that works for your schedule. When to prioritise the others: if punctuality matters (business travel, tight connections), if it is a high-frequency route where IndiGo or Air India Express has comparable pricing, or if your travel date is during a peak period where any disruption has real downstream consequences.
Always check SpiceJet's current operational status and customer ratings for your route before booking. The DGCA monthly report on airline punctuality is a useful reference — find it on dgca.gov.in.
Getting the True All-In Price: A Step-by-Step Approach
Here is the process I use for every LCC booking, which you can adapt:
- Start with an AI comparison search on FlightGPT to get orientation — which airlines fly the route, rough price range with bags included, date flexibility.
- Shortlist two to three options based on timing and AI-shown all-in estimate.
- Open those airlines' apps or sites directly and add your specific bag weight to the cart before comparing checkout prices. The cart total — not the search result — is the comparable number.
- Decide on bundle vs base + add-ons by comparing the bundle fare to base fare + bag added separately. Run the bundle numbers; they often flip the comparison.
- Check cancellation/change policy before paying, especially on SpiceJet. The cheapest fare with no flexibility is not always the right call.
- Book via the airline direct for same-day or last-minute bookings; consider an OTA cashback offer for advance planned bookings if the net cost is genuinely lower after cashback.
For international LCC comparisons (IndiGo international, Air India Express, Scoot, Air Arabia), see our India–Singapore AI fare guide. For understanding how OTAs and agents price these routes differently, see our India–London routing guide.
Frequently asked questions
Does IndiGo or Akasa Air have lower true all-in fares in India?
It genuinely depends on the route, date, and baggage requirement. IndiGo has more flights and competitive base fares, but adds meaningful fees for bags, seats, and changes. Akasa Air frequently offers bundle deals that include bags and can be cheaper all-in on certain routes and dates. The only reliable answer is to add your specific bag allowance to the cart on both and compare checkout prices rather than search-result prices.
How much extra does a checked bag typically cost on IndiGo?
IndiGo's checked baggage fees vary by route, weight, and when you add it — adding at time of booking is typically the cheapest, and adding at the airport counter is the most expensive by a significant margin. Rather than quote a number that may be outdated, check the current fee on goindigo.in under 'Baggage' — the page shows route-specific pricing. The general pattern: domestic bag fees often range from a few hundred to over a thousand rupees depending on timing.
Can AI flight search show all-in fares including bags?
Better AI metasearch tools, including FlightGPT, can incorporate standard baggage fees into the shown fare when you specify you need bags. The accuracy varies — always verify the final number in the airline's own booking cart. AI search is most reliable for initial comparison and orientation; treat it as a starting point, not a final price guarantee.
Is SpiceJet safe to fly in 2026?
SpiceJet is a licensed Indian carrier with DGCA oversight and meets minimum safety standards. The concern is more operational — delays, cancellations, and customer service reliability rather than safety per se. DGCA's monthly airline performance report (available at dgca.gov.in) shows punctuality data by carrier. Factor those metrics into your decision, especially for time-sensitive travel.
Are LCC bundle fares worth it over base + add-ons separately?
Usually yes, if you need the included items. IndiGo's 'Super 6E' and Akasa's bundle tiers typically include check-in baggage and sometimes a seat and meal at a combined price that is cheaper than adding each item separately — particularly when adding bags late (at airport check-in) would be the alternative. The exception: if you travel carry-on only and do not need a specific seat, the base fare without add-ons is genuinely the cheapest option.