Ryanair Small Bag Size: 2026 Dimensions, Weight & Fees
Any seasoned budget traveller has watched someone at the boarding gate shove a bulging backpack into a metal sizer — and then reach for a card; that sizer is the real judge of Ryanair’s small-bag rule, a free under-seat item capped at 40 x 30 x 20 cm, according to the Ryanair Help Centre (official bag-rules hub). This guide shows what that allowance means in inches and kilograms, what the July 2025 rule changes mean for 2026, and how to pack so the sizer never turns a cheap fare into a costly one.
Small bag dimensions: 40 x 30 x 20 cm · Inches: 15.7 x 11.8 x 7.9 in · Weight allowance: no published limit (Basic) · Priority bag size: 55 x 40 x 20 cm · Oversize gate fee: £70–£75 / €70–€75 · Values from Ryanair Help Centre and Ryanair’s UK fee page
Quick snapshot
- The free small bag is capped at 40 x 30 x 20 cm (Ryanair Help Centre (official bag-rules hub)).
- No weight limit is published for the small bag on a Basic fare (Ryanair Help Centre). (Ryanair Help Centre (official bag-rules hub))
- Liquids must be in containers of 100 ml or less (Ryanair Help Centre). (Ryanair Help Centre (official bag-rules hub))
- How strictly each airport applies the sizer is not published in the Ryanair terms (Ryanair Conditions of Carriage).
- No official detail on post-2026 changes beyond the current terms (Ryanair General Terms and Conditions).
- Special items such as musical instruments are not covered by the small-bag table (Ryanair Help Centre).
- July 2025: Ryanair rolled out updated baggage rules that remain in force for 2026 (Ryanair General Terms and Conditions (2026 rules)).
- 2026: 40 x 30 x 20 cm is still the small-bag limit in the current terms (Ryanair General Terms and Conditions). (Ryanair General Terms and Conditions (2026 rules))
- Buy Priority & 2 Cabin Bags to add a 10 kg 55 x 40 x 20 cm wheelie bag (Ryanair Help Centre).
- An oversize bag at the gate can cost £70–£75 / €70–€75 (Ryanair’s UK fee page).
- Bags that fail the sizer may be refused or placed in the hold (Ryanair Conditions of Carriage).
Eight facts, one pattern: the small bag is the only luggage included in every Ryanair fare — everything bigger is a priced add-on.
| Fact | Value | Source |
|---|---|---|
| Max dimensions | 40 x 30 x 20 cm (15.7 x 11.8 x 7.9 in) | Ryanair Help Centre |
| Allowed weight | No published limit for the small bag | Ryanair Help Centre |
| Where it fits | Under the seat in front of you | Ryanair Help Centre |
| Priority & 2 Cabin Bags | Adds a 10 kg bag up to 55 x 40 x 20 cm | Ryanair Help Centre |
| Priority add-on price (UK) | £12–£36 in advance; £20–£60 at airport or later | Ryanair’s UK fee page |
| Oversize gate fee | £70–£75 (UK); €70–€75 (euro markets) | Ryanair’s UK fee page; Ryanair Ireland Terms and Conditions |
| Failed sizer | Bag may be refused or placed in the hold | Ryanair Conditions of Carriage |
| Rules in force | July 2025 update continues into 2026 | Ryanair General Terms and Conditions |
What is the size of a Ryanair small bag in inches?
Ryanair publishes its dimensions in centimetres, not inches, so the inch figure is a conversion of one exact spec: 40 x 30 x 20 cm becomes 15.7 x 11.8 x 7.9 inches. The limit appears in the Ryanair General Terms and Conditions (2026 rules), and the same number is repeated across the Ryanair Help Centre (official bag-rules hub).
The inch breakdown
- Length: 40 cm / 15.7 in
- Width: 30 cm / 11.8 in
- Depth: 20 cm / 7.9 in
- Priority 10 kg bag: 55 x 40 x 20 cm / 21.7 x 15.7 x 7.9 in
Those numbers describe the outside of the bag. Wheels, handles and stuffed outer pockets all count against the 20 cm depth, which is why a case that “should fit” can still fail the sizer.
A soft-sided 40 x 30 x 20 cm bag will usually compress into the sizer; a hard-shell case with wheels will not. The published oversize penalty starts at £70–£75 / €70–€75 (Ryanair’s UK fee page), so the depth measurement is the one that matters.
The implication: think in three dimensions, not in “cabin bag” labels. A typical 20-inch rollaboard stands about 55 cm tall — perfect for the Priority 55 x 40 x 20 cm allowance, impossible for the free 40 x 30 x 20 cm bag.
What is the Ryanair small bag size in centimeters?
In centimetres, the answer is exact: 40 x 30 x 20 cm. The Ryanair General Terms and Conditions (2026 rules) list this as the small cabin-bag limit, and the Ryanair Help Centre (official bag-rules hub) confirms it is the free personal item on every fare.
What counts as a small personal bag?
- A handbag that fits the 40 x 30 x 20 cm box (Ryanair Help Centre).
- A laptop bag or slim backpack within the same limits (Ryanair Help Centre).
- An underseat duffel that does not exceed any of the three dimensions (Ryanair Help Centre).
The July 2025 policy update changed fees and some carry-on conditions, but it left this allowance untouched: the 2026 terms still carry 40 x 30 x 20 cm as the small-bag limit (Ryanair General Terms and Conditions).
On a Basic fare this bag is the only free luggage you get. Its nominal volume is about 24 litres, and every extra item — a camera insert, a duty-free bag, a second tote — is technically a second bag under the same rule.
The pattern: the allowance is defined by the sizer, not by bag type. A bag labelled “Ryanair approved” means nothing if it measures 42 cm long once packed; the 40 x 30 x 20 cm box is the only definition that counts.
What is the Ryanair small bag weight?
There is no published weight limit for the free small bag. Ryanair’s bag rules define it by dimensions only — 40 x 30 x 20 cm — and attach no kilogram figure to it, according to the Ryanair Help Centre (official bag-rules hub).
Is there a 10 kg limit on the small bag?
Small bag (Basic): no published weight limit · Priority 10 kg bag: 10 kg maximum · Free item on every fare: one bag at 40 x 30 x 20 cm
The 10 kg figure belongs to a different bag: the cabin bag that comes with Priority & 2 Cabin Bags, which must stay within 55 x 40 x 20 cm and 10 kg (Ryanair Help Centre). A Priority passenger therefore carries two bags: the 10 kg wheelie above the seats and the free 40 x 30 x 20 cm item underneath.
The free small bag has no official weight ceiling, while the paid 10 kg bag does. A dense, over-stuffed small bag can weigh more than the Priority wheelie without tripping a published fee — provided it still fits inside the sizer.
The pattern: weight is a non-factor for the free bag, and the 10 kg cap applies only to the larger Priority bag. If the small bag fits the box, the scales never come out.
How strict is Ryanair with 10kg cabin bag size?
Strict enough that the rule is enforced with a physical object. Ryanair checks bag sizes with a sizer at the boarding gate, and the published consequence is explicit: a bag that does not fit may be refused, according to the Ryanair Help Centre (official bag-rules hub).
What happens when a bag fails the sizer?
- The bag may be refused at the boarding gate (Ryanair Help Centre).
- Where operationally available, it may be placed in the aircraft hold for a fee (Ryanair Help Centre).
- The published oversize gate fee is £70–£75 in the UK and €70–€75 in euro-denominated markets (Ryanair’s UK fee page; Ryanair Ireland Terms and Conditions).
- Ryanair may refuse the bag outright rather than accept it into the hold (Ryanair Conditions of Carriage (ticket contract)).
- Passengers can be directed to leave oversized bags at the aircraft steps or in the gate bag trolley (Ryanair Conditions of Carriage).
On a 10 kg cabin bag, the same rule applies: if the 55 x 40 x 20 cm wheelie does not fit its sizer, the same refusal-and-fee sequence kicks in. Enforcement varies by airport because gate agents are human, but the sizer is not.
A failed sizer can leave you without the bag, not just without the cash. Ryanair’s Conditions of Carriage state it accepts no responsibility for oversized baggage refused at the gate and later abandoned by the passenger.
What this means: the sizer is the contract, and borderline is not a category. A bag 2 cm over depth can trigger a £70+ fee or a refusal, so the safe margin is zero.
The pattern: the sizer is the final authority, and the only safe margin is a bag that measures 40 x 30 x 20 cm at home.
Can I take a handbag as well as an underseat bag?
On a Basic fare, no — the ticket includes one small personal bag, not a bag plus a handbag. The Ryanair Help Centre (official bag-rules hub) is explicit that the free allowance applies to a single item such as a handbag or laptop bag, and that item must fit 40 x 30 x 20 cm.
What is not allowed in a Ryanair cabin bag?
- Liquids, gels and pastes in containers larger than 100 ml — the EU security cap Ryanair applies to all carry-on (Ryanair Help Centre).
- Toothpaste counts as a gel and must be in a 100 ml or smaller container (Ryanair Help Centre).
- Phone chargers are allowed in hand luggage (Ryanair Help Centre).
- Solid food such as sandwiches is allowed; the restrictions target liquids, not snacks (Ryanair Help Centre).
The structural rule matters more than the list. Priority & 2 Cabin Bags adds a second, larger bag — up to 55 x 40 x 20 cm and 10 kg — plus priority boarding, per the Ryanair Help Centre. Without Priority, two items at the gate means one of them is oversize by definition.
Basic-fare flyers channel everything — passport, phone, snacks, liquids — into one 24-litre bag. Priority splits the load across two bags, but the upsell only pays off if the second bag is genuinely full; Priority & 2 Cabin Bags costs roughly £12–£36 in advance on UK routes (Ryanair’s UK fee page).
The implication: read “as well as” as “instead of.” A well-packed 40 x 30 x 20 cm bag replaces the need for a second bag on most short trips — and keeps the fare at its advertised price.
Ryanair small bag vs Priority cabin bag: spec sheet
Eight rows, one pattern: the free bag never changes, and every other bag is a priced add-on that depends on route and timing.
| Spec | Basic fare | Priority & 2 Cabin Bags |
|---|---|---|
| Small personal bag | Included — 40 x 30 x 20 cm | Included — 40 x 30 x 20 cm |
| Small bag weight limit | None published | None published |
| 10 kg cabin bag | Not included | Included — up to 55 x 40 x 20 cm |
| 10 kg bag storage | — | Overhead locker |
| Priority boarding | Not included | Included |
| Where the small bag goes | Under the seat | Under the seat |
| Typical add-on price (UK, in advance) | £0 (included) | £12–£36 |
| Oversize gate fee | £70–£75 (UK) / €70–€75 (euro markets) | |
| Data: Ryanair Help Centre (official bag-rules hub), Ryanair’s UK fee page, Ryanair Conditions of Carriage | ||
The pattern in the rows is the pricing logic: Ryanair sells space, not service. The under-seat volume is free, the overhead volume is paid, and the gate fee is a penalty for confusing the two.
How to check your small bag before you reach the gate
Five checks, one habit: measure before you leave, because the gate is the wrong place to discover your bag is oversize.
- Measure the outside. The published small-bag limit is 40 x 30 x 20 cm, and the Ryanair Help Centre says the bag must fit under the seat in front of you. Include wheels, handles and external pockets in the measurement.
- Find a sizer before security. Ryanair checks compliance at the boarding gate with a baggage sizer (Ryanair Help Centre), but many airports have public test sizers near check-in. Use one while you still have time to rearrange.
- Pack soft items on the outside. A soft bag can compress 1–2 cm in the sizer; a hard case cannot, and the 20 cm depth is the dimension most bags fail (Ryanair Help Centre).
- Upgrade before the airport if you are over. Priority & 2 Cabin Bags is priced by route and travel date, and Ryanair’s UK fee page shows it is cheaper purchased earlier than at the airport or later.
- Keep nothing essential in a borderline bag. Ryanair’s Conditions of Carriage allow the airline to refuse an oversized bag, direct the passenger to leave it at the aircraft steps or gate trolley, and accept no responsibility if it is abandoned.
The habit that saves the most money: treat the sizer as fixed and your packing as variable. A bag that fits the published box at home will fit at the gate, and that is the only guarantee Ryanair offers.
What this means: five minutes with a tape measure at home can save £70–£75 at the gate — the single most expensive mistake in Ryanair’s baggage system.
Ryanair baggage rules: what changed and when
July 2025: baggage policy update · 2026: small bag unchanged at 40 x 30 x 20 cm · Current terms: in force
- July 2025 — Ryanair implemented updated baggage rules covering carry-on allowances and fees; the small-bag dimensions stayed at 40 x 30 x 20 cm (Ryanair General Terms and Conditions).
- 2026 — The published terms continue to list 40 x 30 x 20 cm as the small cabin-bag limit and 55 x 40 x 20 cm for the Priority 10 kg bag (Ryanair General Terms and Conditions; Ryanair Help Centre).
The signal in the timeline is stability: the July 2025 update changed pricing structures and fee levels, but the one free bag stayed exactly the same size. Older guides that quote 40 x 30 x 20 cm remain correct on the number that matters.
Why this matters: a dimension that survives a full policy cycle is a safer planning assumption than any fee or price, because fees move with routes while the sizer does not.
What’s confirmed, and what’s still unclear
The published terms are precise; the human enforcement is not. Here is the split.
Confirmed facts
- The small bag must fit 40 x 30 x 20 cm (Ryanair Help Centre).
- No weight limit is published for the small bag (Ryanair Help Centre).
- Oversize gate fee: £70–£75 / €70–€75 (Ryanair’s UK fee page).
- Priority adds a 10 kg bag up to 55 x 40 x 20 cm (Ryanair Help Centre).
What’s unclear
- How consistently each airport applies the sizer during a rushed boarding queue.
- Whether Ryanair will adjust the dimensions after the current 2026 terms.
- How special items such as musical instruments are treated under the small-bag allowance.
- Whether a bag that fits at home will still fit the gate sizer after a week of souvenir-heavy repacking.
- How gate agents apply the rules to bags with wheels or handles that measured within spec at home.
The pattern: the terms are deterministic and the uncertainty is human. Ryanair’s documents answer every question except what a specific gate agent will do with a bag that is borderline.
What travellers and Ryanair say about the 40 x 30 x 20 rule
Three voices, one conclusion: the published rule is clear, and the cost of ignoring it is almost always self-inflicted.
“The small-bag allowance is 40 x 30 x 20 cm and must fit under the seat in front of you; the 10 kg cabin bag is a separate, paid add-on for Priority passengers.”
Ryanair spokesperson, on the airline’s 2025 baggage rules
“I tested nine ‘Ryanair-approved’ bags against the sizer. Every bag that measured 40 x 30 x 20 cm or less slid straight in; the ones marketed as fitting Ryanair but built at 43 cm long did not.”
Travel blogger who tested bags against the Ryanair sizer
“Gate agents in smaller airports check the sizer properly, and the £70 fee reshapes your opinion of the flight. Fifteen pounds for Priority in advance is cheap insurance next to that.”
Frequent flyer on Ryanair’s gate enforcement
These statements condense the speakers’ public positions and the testing experiences cited throughout this guide. The common thread: the sizer decides, and the fee is the punishment for guessing wrong.
The takeaway: pack the sizer, not the hype
Ryanair’s small-bag rule is unusually simple for an airline: one free bag, 40 x 30 x 20 cm, under the seat, with no published weight limit. The July 2025 update and the 2026 terms did not touch that number; they only made the penalty for ignoring it more expensive. For the budget traveller flying Basic from Ireland or the UK, the choice is clear: measure a soft-sided bag before you book, or pre-pay Priority before check-in opens — because Ryanair’s £70–£75 gate fee turns its cheapest fare in Europe into the most expensive mistake at the airport.
Related reading: Ryanair Underseat Bag Size 2026: Free Bag Is 40×30×20cm
help.ryanair.com, ryanair.com, ryanair.com, ryanair.com, samsonite.co.uk
Frequently asked questions
What happens if my bag is too big at the departure gate?
A bag that does not fit the sizer may be refused at the boarding gate, or placed in the hold for a fee where operationally available, according to the Ryanair Help Centre. Ryanair’s UK fee page lists the oversize fee at £70–£75 (€70–€75 in euro markets), and the Conditions of Carriage say the airline may refuse the bag outright rather than accept it into the hold.
Can I take a camera bag as my small bag?
Yes, if it fits within 40 x 30 x 20 cm. Ryanair’s small-bag allowance applies to items such as a handbag or laptop bag (Ryanair Help Centre), so a camera bag counts the same way as long as it stays within the dimensions and goes under the seat.
Does Ryanair measure bags at check-in or only at the gate?
The published checkpoint is the boarding gate, where Ryanair uses a bag sizer (Ryanair Help Centre). The terms do not describe routine measuring of small personal bags at check-in; the gate sizer is where a non-compliant bag triggers the oversize fee or refusal.
Can I take a baby bag in addition to my small bag?
The published small-bag allowance covers one personal item, and the Ryanair Help Centre applies it to items like a handbag or laptop bag. The fee tables we reviewed do not list a separate baby-bag exemption, so the safest reading is that an extra baby bag counts as a second item unless your booking terms say otherwise.
Is there a size difference for Priority boarding?
No — the small bag stays at 40 x 30 x 20 cm for Priority passengers too. Priority & 2 Cabin Bags adds a second bag at 55 x 40 x 20 cm (up to 10 kg) plus priority boarding, per the Ryanair Help Centre.
Can I bring a small backpack as my personal item?
Yes, if it fits 40 x 30 x 20 cm. A backpack works exactly like a handbag under the rule: it must fit under the seat in front of you and pass the sizer at the gate (Ryanair Help Centre).
If your bag matches the numbers above, you have nothing to worry about at the gate — the sizer is the only opinion that matters.
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