Every Wizz Air passenger gets one free carry-on bag. The limit is 40 × 30 × 20 cm and 10 kg, and it must go under the seat in front of you, not in the overhead bin. If you want a wheeled trolley bag in the cabin, you need to buy WIZZ Priority. There is no way to add the trolley bag as a standalone option.
This guide covers the exact bag sizes, how Wizz Air measures them, what the gate fee is if you get it wrong, and whether WIZZ Priority is worth paying for.
| Bag type | Dimensions | Max weight | Where it stows | Cost |
|---|---|---|---|---|
| Free carry-on |
40 × 30 × 20 cm
|
10 kg |
Under seat
| Free |
| WIZZ Priority trolley |
55 × 40 × 23 cm
|
10 kg |
Overhead bin | Priority req. |
The free Wizz Air carry-on bag
Every ticket includes one free bag. The limit is 40 × 30 × 20 cm with a maximum weight of 10 kg. It must fit under the seat in front of you, and Wizz Air does not guarantee overhead bin space unless you have WIZZ Priority.
That 40 × 30 × 20 cm limit is roughly the size of a large day rucksack or a structured tote bag. It is not a wheeled cabin suitcase. Most wheeled cabin bags are 55 × 40 × 23 cm, which is the trolley bag size reserved exclusively for WIZZ Priority passengers.
Compared with other UK carriers, Wizz Air’s free allowance is one of the more restrictive. Jet2 and British Airways both give every passenger a full overhead cabin bag for free. Wizz Air’s free bag is slightly larger in one dimension than Ryanair’s free bag (40 × 20 × 25 cm), but both are under-seat only and neither qualifies as a cabin suitcase.
What fits in a 40 × 30 × 20 cm bag
For a short city break or a one-night trip, the free bag is workable if you pack carefully. A bag this size will typically hold:
- A laptop or tablet
- One or two days’ worth of clothes, rolled tightly
- Toiletries in a 100 ml clear bag
- One pair of flat shoes or compact trainers
- A lightweight jacket, compressed or worn on the plane
What will not fit: a wheeled cabin suitcase, a large backpack with a rigid frame, or enough clothes for more than two nights. For anything longer, most travellers will need the trolley bag that comes with WIZZ Priority.
WIZZ Priority: the only way to bring a trolley bag
WIZZ Priority is Wizz Air’s paid add-on that allows you to bring a wheeled trolley bag into the cabin. You cannot buy the trolley bag allowance on its own. It is bundled with the Priority service, which also includes priority boarding and a dedicated check-in desk. Either you buy the bundle or you travel with the underseat bag only.
| What you get | Details |
|---|---|
| Trolley bag |
55 × 40 × 23 cm, max 10 kg
Included |
| Free carry-on |
40 × 30 × 20 cm, max 10 kg
Included |
| Priority boarding |
Board before standard passengers
Included |
| Priority check-in |
Dedicated check-in desk
Included |
| Typical price |
From around £10–25 per person
Add-on |
Is WIZZ Priority worth paying for?
For most passengers travelling for more than one night, yes. The trolley bag it includes, at 55 × 40 × 23 cm and 10 kg, is the standard cabin suitcase size that airlines such as Jet2, easyJet and British Airways include for free. On Wizz Air, you pay for the privilege, but paying roughly £10 to £25 online is almost always cheaper than checking a bag into the hold, which can cost £25 to £70 or more depending on the route and how close to departure you book.
The priority boarding perk is genuinely useful on busy summer routes. Boarding early means you have a much better chance of finding overhead bin space for your trolley bag, reducing the risk of it being gate-checked to the hold at the last minute.
One caveat: even with WIZZ Priority, Wizz Air can check your trolley bag into the hold on a completely full flight if overhead space runs out. You will not be charged for this, but you will have to collect it at baggage reclaim. Getting to the gate early reduces the risk.
Buy WIZZ Priority at the time of booking for the best price. Adding it later through manage booking, or buying it at the airport, typically costs significantly more. If you are travelling as a group, each person needs their own WIZZ Priority purchase.
How Wizz Air measures your bag
Wizz Air’s official policy states that handles and wheels are not included in the dimension measurement, but that wheels must add no more than 5 cm to the overall size of the bag. In practice, gate staff use the physical bag sizer, not a tape measure. If your bag fits in the frame, you are clear. If it does not, you will be charged regardless of what the label on your bag says.
Soft-sided bags tend to pass the sizer more easily than rigid shell cases of the same stated dimensions, because the fabric can compress slightly. A bag that is right on the borderline of 40 × 30 × 20 cm is much safer in a soft material than a hard shell.
Three checks to do before you travel:
- Measure your bag with handles down and wheels fully extended
- Confirm it fits within 40 × 30 × 20 cm (free bag) or 55 × 40 × 23 cm (WIZZ Priority trolley)
- If your bag is borderline, try laying it on its side before attempting the gate sizer
What happens at the gate if your bag is too large
If you arrive at the boarding gate with a bag that exceeds the free carry-on limit and you have not bought WIZZ Priority, Wizz Air charges approximately €65. Your bag is placed in the hold. No exceptions are made at the gate.
That gate fee is substantially higher than the cost of WIZZ Priority bought online. The calculation is simple: if there is any chance you will need the extra bag space, buy WIZZ Priority when you book. Wizz Air enforces its baggage policy consistently, particularly on routes from busy UK airports.
The same applies to your free carry-on bag. If your rucksack or tote is too large to fit the 40 × 30 × 20 cm sizer, you will be charged to check it, not given a warning. The gate sizer is the final test.
Tips for making the most of the free bag
The 40 × 30 × 20 cm allowance is workable for short trips if you approach it strategically. The main mistake people make is trying to treat it like a cabin suitcase. It is not. Think of it as a day bag with a strict size limit.
- Choose a soft-sided bag. Rigid cases of the same stated dimensions often fail the gate sizer. Soft bags compress and pass through more easily.
- Roll your clothes. Rolling is more space-efficient than folding, prevents creasing, and lets you fit more into a small bag.
- Wear your bulkiest items on the plane. A coat, thick jumper, or boots do not count towards your bag allowance if you are wearing them at the airport. Dress accordingly.
- Use packing cubes. Compressing clothing into cubes eliminates dead air in the bag and lets you fit noticeably more.
- Minimise toiletries. A single travel-sized toiletry kit rather than full-size products makes a real difference in a 40 × 30 × 20 cm bag.
- Know when WIZZ Priority is the right call. For any trip over two nights, paying £10 to £25 for the trolley bag is almost certainly better value than the stress and compromise of packing into the underseat bag.
Wizz Air hand luggage vs other UK airlines
Wizz Air and Ryanair operate very similar models: a small free bag under the seat, with the proper overhead cabin bag requiring an extra purchase. easyJet is more generous, with a free bag of 45 × 36 × 20 cm, though the overhead cabin bag still requires an extra seat or Plus fare on most routes. Jet2 and British Airways stand apart by giving all passengers a full overhead cabin bag for free, with no add-on required.
The practical implication: a Wizz Air ticket needs to be assessed on total cost, not just the base fare. Add WIZZ Priority to the price before comparing with other airlines. On short routes where WIZZ Priority is £10 or less, Wizz Air can still be very competitive. On longer routes where Priority pricing is higher, the gap narrows considerably.
For the full side-by-side comparison across all eight major UK airlines, including exact dimensions and free bag policies, see our guide to hand luggage sizes for all UK airlines.
Frequently asked questions
What size is the Wizz Air free carry-on bag?
The free Wizz Air carry-on bag must be no larger than 40 × 30 × 20 cm and no heavier than 10 kg. It must fit under the seat in front of you. This is included with every ticket at no extra cost.
Can I take a trolley bag on Wizz Air for free?
No. A wheeled trolley bag in the cabin is only permitted if you purchase WIZZ Priority. Without it, you are limited to the free underseat bag (40 × 30 × 20 cm). There is no option to buy the trolley bag allowance separately.
How much does WIZZ Priority cost?
WIZZ Priority is dynamically priced and varies by route and booking date. When purchased online at the time of booking, the typical price is between £10 and £25 per person per flight. Prices are higher when added later or bought at the airport, so booking it upfront is always better value.
What is the gate fee if my bag is too big?
If your bag exceeds the free carry-on limit and you have not bought WIZZ Priority, Wizz Air charges approximately €65 at the gate. The bag is also placed in the hold. This applies to both the free carry-on bag (if it fails the sizer) and to any unregistered trolley bag.
Does Wizz Air weigh hand luggage?
Wizz Air states a 10 kg weight limit for both the free carry-on and the WIZZ Priority trolley bag. Weight checks on cabin bags are not applied at every gate, but if your bag is flagged the charge can apply. Keeping under 10 kg removes the risk entirely.
