Quick answer: For most Indian airlines  IndiGo, SpiceJet, and Akasa  your cabin bag must stay within 55 × 35 × 25 cm and 7 kg. Air India is the outlier, allowing 55 × 40 × 20 cm and 8 kg. If you want one bag that clears every airline without a second thought, look for something at or under 55 × 35 × 20 cm  it fits IndiGo's sizer and Air India's frame at the same time.

Here's the full breakdown, so you never get stuck repacking at the boarding gate.

Cabin baggage rules by airline (2026)

A few things worth knowing before you fly:

• Dimensions include wheels and handles. A bag that measures 56 cm tall because of a protruding handle will get rejected at the sizer, even if the shell itself is compliant.
• The one-bag rule is strictly enforced. Since December 2024, Indian airports allow exactly one cabin bag plus one personal item  no more sneaking a second tote through security.
• Gate weighing is increasingly common at major airports like Delhi, Mumbai, Bengaluru, and Hyderabad. Meeting the size limit doesn't guarantee you'll skip the scale.
• Hard-shell bags get checked more strictly than soft ones, because they can't compress to fit a tight sizer. If your case is even a centimeter over on paper, don't count on flex to save you.

Why airlines have different cabin limits in the first place

There's no single Indian standard for cabin baggage  each airline sets its own limit within the broader safety framework set by the Bureau of Civil Aviation Security (BCAS). What BCAS does mandate uniformly is the one-bag rule: one main cabin bag plus one personal item, strictly enforced since December 2024. The actual dimensions and weight, though, are each airline's own commercial policy  which is exactly why IndiGo, SpiceJet, and Akasa cap out at 7 kg while Air India allows 8 kg.

This matters more than it sounds like it should, because most travelers assume "cabin bag" means the same thing everywhere. It doesn't. A bag that clears IndiGo's sizer with room to spare might sit right at Air India's height limit, and vice versa  Air India's box is wider and shorter than IndiGo's, not just a different total.

How gate weighing actually works

If you've never had your cabin bag weighed at the gate, it's easy to assume the size limit is the only thing that matters. Increasingly, that's not true. Airport staff at major hubs  Delhi, Mumbai, Bengaluru, and Hyderabad in particular  have been weighing cabin bags more frequently as gate congestion and overhead-bin space have become tighter.

Two practical implications follow from this:

1. A bag that fits the sizer can still get you charged if it's over the weight limit. Size compliance and weight compliance are two separate checks.

2. Pack heavier items strategically. Since dimensions are checked first at the gate cage and weight is checked separately, distributing weight between your main cabin bag and your personal item (where the airline allows one) can help you stay under both limits without changing what you're carrying.

Cabin bag vs. personal item: don't conflate the two

A common mistake is assuming your "personal item" is a second cabin bag. It isn't. IndiGo, Akasa, and Air India all define the personal item as something meaningfully smaller  a laptop bag, handbag, or small backpack that fits under the seat in front of you, not the overhead bin. SpiceJet is the exception: it folds your personal item into the same 7 kg total as your main bag rather than giving it a separate allowance, so if you're flying SpiceJet, weigh both bags together before you leave for the airport.

So what size should you actually buy?

If you fly IndiGo, SpiceJet, or Akasa most often, a cabin bag built to the 55 × 35 × 25 cm standard is the safe choice  that's exactly what WNTR's Dawn X Cabin and Strunk Cabin are sized for.

If you fly Air India regularly, or split your travel across carriers, choose a cabin case that's slightly shorter and narrower than the IndiGo limit  that clears both standards without you having to think about which airline you booked. Check exact dimensions against your specific case on our size charts before you buy.

Browse the full range in the Cabin Luggage collection  every case listed there is built to standard Indian cabin dimensions.

A quick way to stay under weight without a scale

Most people find out they're over the limit only at the gate. A simpler approach: weigh your empty cabin bag before you buy it. An empty case that already weighs 3–3.5 kg leaves you only 3.5–4 kg of real packing weight within a 7 kg allowance  which fills up fast once a laptop, charger, and a change of clothes go in. Look for empty weights closer to 2.5–3 kg if you want more usable packing room within the same airline limit; that's the range WNTR's Dawn X and Strunk cabin cases are built to.