For a common 55 × 35 × 25 cm cabin trolley, IndiGo and SpiceJet Boeing limits align. Air India is narrower in depth at 20 cm, Air India Express publishes 56 × 36 × 23 cm, and SpiceJet Q400 is smaller at 50 × 35 × 23 cm.
Cabin-baggage comparison
| Airline | Maximum size | Weight | Personal item | Official source |
|---|---|---|---|---|
| Air IndiaEconomy / Premium Economy | 55 × 40 × 20 cm | 7 kg | One small item up to 3 kg; maximum 40 × 30 × 20 cm. | View policy ↗ |
| IndiGo | 55 × 35 × 25 cm | 7 kg | Check the allowance shown on your reservation and ticket. | View policy ↗ |
| Air India Express | 56 × 36 × 23 cm | 7 kg | One item up to 40 × 30 × 10 cm; combined cabin-bag and personal-item weight up to 7 kg. | View policy ↗ |
| SpiceJetBoeing flights | 55 × 35 × 25 cm | 7 kg | Laptop bag, purse and eligible duty-free bag count inside the 7 kg total. | View policy ↗ |
| SpiceJetQ400 flights | 50 × 35 × 23 cm | 7 kg | Laptop bag, purse and eligible duty-free bag count inside the 7 kg total. | View policy ↗ |
| Akasa Air | 115 cm total; exact sides not stated on cited page | 7 kg | The cited allowance page lists one handbag within the overall allowance. | View policy ↗ |
Dimensions are shown as height × width × depth for a trolley-style bag. Airline pages may label the axes differently. Always match all three exterior measurements and check your booking.
Important exceptions people miss
Wheels count
Air India Express and IndiGo explicitly include wheels and handles in their published limits. Measure the full exterior.
Q400 is smaller
SpiceJet publishes 50 × 35 × 23 cm for Q400 flights rather than its Boeing limit.
Personal items may share weight
Air India Express and SpiceJet explicitly combine specified extra items within the 7 kg total.
Ticket beats summary
Fare, route, aircraft, codeshare and airport conditions can change the practical allowance.
Liquids and power banks
Air India advises avoiding cabin liquids, aerosols and gels above 100 ml, with eligible items carried inside a clear, resealable one-litre bag. Spare lithium batteries and power banks belong in hand baggage, subject to airline-specific quantity and watt-hour limits.
Open the airline source linked above and compare it with the baggage line on your booking confirmation. SoguzBaggage records the date checked, but your ticket is the controlling document.