Aer Lingus Hand Luggage Allowance: Free Cabin & Under-Seat Rules

Aer Lingus gives you one free under-seat bag on every ticket, measuring 40 × 30 × 20 cm. If you want to bring a bigger overhead cabin bag (the '10kg Carry-on bag' in Aer Lingus language), you'll either need to pay for it separately or book a fare that includes it automatically. Here's exactly what you're allowed, what costs extra, and how to stay inside the rules without paying a gate fee.

What You Get Free on Every Aer Lingus Ticket

Every passenger gets one personal item, allowed 40 × 30 × 20 cm. It goes under the seat in front. There is no published weight limit for this bag, but it must fit the dimensions completely.

Common examples: a small backpack, handbag, laptop bag or thin tote. If you're travelling light for a weekend, a properly packed under-seat bag can hold more than you think — see our guide on weekend packing in an underseat bag for practical ideas.

The Paid Overhead Cabin Bag (10kg Carry-on)

The overhead locker cabin bag is 55 × 40 × 24 cm, up to 10 kg. Aer Lingus calls it the '10kg Carry-on bag', and The '10kg Carry-on bag' — included with Plus, Advantage and AerSpace fares, AerClub Silver/Platinum/Concierge members, Economy bought through British Airways, the adult travelling with an infant, and transatlantic or interline connections.

You get it included if you:

• Bought a Plus, Advantage or AerSpace fare
• Hold AerClub Silver, Platinum or Concierge status
• Booked an Economy ticket through British Airways (codeshare)
• Are an adult travelling with an infant
• Are connecting to or from a transatlantic or interline flight

On the cheapest 'Saver' fare, the 10kg Carry-on bag is a paid add-on. Price depends on route and season, but expect £8–£16 each way if you add it at booking, and more if you wait until check-in.

You can see how Aer Lingus compares to the budget carriers below:

What Happens If Your Bag Is Too Big at the Gate

If you show up at the gate with an oversized or overweight cabin bag and you haven't pre-paid for it, Aer Lingus charges €35 to check it into the hold. That's one of the lowest gate fees among European carriers, but it's still four or five times what you'd pay in advance — so always measure before you leave home.

For a detailed look at how airlines actually measure your bag, including whether wheels and handles count, read do wheels count in cabin bag size.

Choosing the Right Bag for Aer Lingus

If you're flying on a Saver fare without the paid cabin bag, stick to an under-seat bag that fits 40 × 30 × 20 cm. The Bordlite Underseat Cabin Bag 40×25×20 (£10.48) is a reliable choice that works across most European carriers, including Aer Lingus, Ryanair, easyJet and Wizz Air. For more on picking one bag that fits everywhere, see bag that fits all airlines.

If you've paid for the 10kg Carry-on or have it included, you can bring both the under-seat bag and an overhead cabin bag. Just make sure the bigger piece stays within 55 × 40 × 24 cm, up to 10 kg. Many travellers use a small cabin backpack for the under-seat slot and a wheeled cabin bag overhead.

Aer Lingus vs Other Irish & UK Airlines

Aer Lingus sits between the budget carriers and the full-service airlines. You get a free under-seat bag like Ryanair, but the overhead cabin bag is usually paid unless you book up a fare tier — similar to easyJet or Wizz Air. British legacy carriers like British Airways include both bags free on every Economy ticket, which can make them better value on short-haul if you're checking prices properly.

For a side-by-side cost comparison on a typical week-long trip, see Jet2 vs Ryanair baggage breakdown — the method works for Aer Lingus too.

Tips to Avoid Aer Lingus Baggage Fees

• Book the right fare upfront. If you know you'll need an overhead bag, Plus or Advantage fares often work out cheaper than Saver + paid baggage, especially when flights are on sale.
• Pack strategically. A weekend in Dublin or a short work trip to Cork rarely needs more than an under-seat bag. Use packing cubes and wear your bulkiest shoes. Our article on maximising underseat bag space has eight practical tricks.
• Measure at home. Use a tape measure on all three dimensions, including wheels and handles. If you're borderline, it's not worth the risk.
• Join AerClub. Silver status (earned after 15 return flights or 6,000 Tier Credits) includes the 10kg Carry-on bag on every future booking, even Saver fares. If you fly Aer Lingus regularly, the maths adds up quickly.

For broader strategies across multiple airlines, read avoid airline baggage fees: 7 habits that keep costs at zero.

Liquids, Power Banks and Other Cabin Rules

Aer Lingus follows standard EU and UK liquid rules: each container must be 100 ml or less, all containers must fit in a single resealable one-litre clear bag, one bag per passenger. Some UK airports have introduced new CT scanners that let you carry larger liquid volumes, but Aer Lingus's Dublin hub and most European airports still enforce the old rules — so always pack as if the limit applies. More detail in hand luggage liquids rules UK.

Power banks are allowed in cabin baggage only, not in the hold. Capacity must be 100 Wh or below for most consumer models (around 27,000 mAh). Our Fast-Charge Power Bank 45 W (£28.48) is compliant and fits easily in an under-seat bag. Full rules in power bank hand luggage rules.

Final Thoughts

Aer Lingus keeps it simple: one free under-seat bag on every ticket, and an overhead cabin bag if you've either bought it separately or chosen a fare that includes it. If you're flying short-haul within Europe on a Saver fare and can travel light, stick to 40 × 30 × 20 cm and you'll never pay a penny extra. If you need the bigger bag, just add it at booking — the gate fee is low by industry standards, but still four times the advance price.

Browse our full range of cheap cabin bags to find the right fit for your next Aer Lingus flight.

FAQ

Q: What size bag can I take free on Aer Lingus?

A: Every passenger gets one personal item measuring 40 × 30 × 20 cm, free on all fares. The overhead cabin bag (55 × 40 × 24 cm, up to 10 kg) is only included on Plus, Advantage, AerSpace fares, or as a paid add-on on Saver.

Q: Does Aer Lingus charge for cabin bags?

A: The under-seat personal item is always free. The 10kg overhead cabin bag The '10kg Carry-on bag' — included with Plus, Advantage and AerSpace fares, AerClub Silver/Platinum/Concierge members, Economy bought through British Airways, the adult travelling with an infant, and transatlantic or interline connections. If you show up at the gate without having pre-paid, the fee is €35.

Q: Can I bring a handbag and a cabin bag on Aer Lingus?

A: Yes, if you've paid for the 10kg Carry-on bag or have a fare that includes it. The handbag counts as your personal item (40 × 30 × 20 cm) and the cabin bag goes overhead (55 × 40 × 24 cm, up to 10 kg). On a Saver fare without the paid upgrade, you can only bring the personal item.

Q: What happens if my Aer Lingus cabin bag is overweight?

A: If your 10kg cabin bag weighs more than 10 kg, it will be tagged for the hold at the gate and you'll pay €35. There's no separate excess-weight charge for cabin bags — it's checked or it's not.

Not sure your bag fits? Measure it against every airline in the size checker, or browse the bags that pass the sizer.

Also worth reading: Norwegian Baggage Allowance: What's Included Free in 2026

Airline baggage rules and fees change frequently and can vary by route, travel date and when you book. Always check the airline's current official baggage policy before travelling.