Cabin baggage rules differ by airline, fare and sometimes route. This guide compares the main UK carriers, explains what is usually included, and gives you a practical way to check your bag before booking and again before departure.
Overview
The most important distinction is between a small personal item and a larger cabin bag. A personal item must normally fit under the seat in front of you. A larger cabin bag is intended for the overhead locker and may be included only with a particular fare, priority product, cabin class or ticket bundle.
Airlines can change dimensions, weight limits, fees and fare inclusions. The figures below are useful reference points for planning, not a replacement for checking the baggage information attached to your booking. The allowance shown on your booking confirmation takes priority over a general comparison table, particularly if you booked through a package provider or another travel company.
| Airline | Small item or under-seat bag | Larger cabin bag | What to verify before travel |
|---|---|---|---|
| British Airways | Check the current personal-item dimensions for your fare. | A commonly published reference size is 56 × 45 × 25 cm; weight and fare conditions must be checked. | Cabin class, route, weight rules and whether the bag must be lifted unaided. |
| easyJet | A small under-seat bag is commonly listed as 45 × 36 × 20 cm. | A larger bag is commonly listed as 56 × 45 × 25 cm when purchased or included. | Whether your fare includes the larger bag, plus the current weight limit and seat or boarding benefits. |
| Ryanair | The small personal bag is commonly listed as 40 × 20 × 25 cm. | A larger 55 × 40 × 20 cm bag is generally associated with the relevant priority or cabin-bag option. | Whether priority is available for your flight, the applicable weight limit and the gate enforcement policy. |
| Jet2 | Check the current allowance for personal items and smaller bags. | A commonly published reference size is 56 × 45 × 25 cm, with a stated weight limit to confirm. | Fare conditions, maximum weight and whether the bag is accepted in the cabin or placed in the hold. |
| TUI | Check the allowance attached to your holiday or flight booking. | Published cabin-bag dimensions and weight can depend on the booking type and route. | Package holiday terms, aircraft, route, paid upgrades and any hold-bag allowance. |
| Wizz Air | A small bag is commonly listed as 40 × 30 × 20 cm. | A larger 55 × 40 × 23 cm bag is generally linked to the relevant priority product. | Whether priority is included or available, the current weight limit and the booking’s fare bundle. |
| Virgin Atlantic | Check the current personal-item rules for your cabin. | A commonly published reference size is 56 × 36 × 23 cm, with weight depending on cabin and fare. | Cabin class, ticket type, number of pieces and the current maximum weight per bag. |
These comparisons show why a bag that fits one airline’s rules may not fit another’s. Budget airlines often separate the under-seat allowance from the overhead-locker allowance, while full-service airlines may vary the number and weight of cabin bags by cabin class. Family policies also differ: an infant’s allowance, pushchair, car seat or child baggage may be treated separately from an adult passenger’s cabin bag.
Checklist by scenario
For a basic hand-luggage fare
- Find the fare name on your confirmation, not just the airline name.
- Identify whether you have an under-seat item only.
- Measure the bag when packed, including wheels, handles and external pockets.
- Keep within the stated weight limit where one applies.
For an overhead cabin bag
- Check whether the larger bag is included, purchased separately or linked to priority boarding.
- Confirm the maximum dimensions in centimetres; do not rely on a retailer’s “airline approved” label.
- Check whether the allowance is per passenger, per piece or shared across a booking.
- Read the airline’s instructions for bags that are too large or heavy at the gate.
For a family or group booking
- Review every passenger’s allowance, including infants and children.
- Check the rules for pushchairs, car seats, medical equipment and baby supplies.
- Do not assume that one passenger’s priority or cabin-bag entitlement covers everyone.
- Allow time at the airport for repacking if several bags are close to the limit.
What to double-check
Use the airline’s website or your booking-management page immediately before travel. Look for the words “cabin baggage”, “hand baggage”, “small personal bag”, “large cabin bag” and “priority”. These may describe different products.
Check all three measurements. A soft bag can exceed the limit when its pockets are full, while a rigid case may be within two dimensions but too deep because of its wheels. Weigh it fully packed using the same scale you will use at home. If the airline gives no published weight limit, the bag may still need to be light enough for you to handle safely and place in the locker without assistance.
Also check the aircraft and route. A larger cabin bag may be accepted at check-in but placed in the hold if overhead space is limited. That can affect access to medication, travel documents and valuables, so keep essential items in a smaller personal bag where the rules permit.
If you are driving to the airport, compare baggage planning with your wider departure plan using our guide to arriving at a UK airport. For a delayed or changed flight, our real-time flight status guide explains how to check updates.
Common mistakes
- Confusing a personal item with a cabin case: the small bag may be the only item included in the cheapest fare.
- Measuring an empty bag: packed pockets and expanded sections count.
- Ignoring wheels and handles: published dimensions normally refer to the complete bag.
- Buying priority without checking the booking: availability, benefits and prices can vary.
- Relying on an old screenshot: airline baggage rules and fare bundles can change.
- Putting essentials in a bag that may be checked: keep passports, medication, electronics and valuables with you.
When to revisit
Check this topic whenever you book a flight, change your fare, add priority or buy a new bag. Recheck the airline’s official allowance before summer and winter travel periods, when airlines may update products or enforcement guidance. You should also review it after a schedule change, aircraft change, package-holiday amendment or transfer to a partner airline.
Your final action list is simple: open the booking, identify the exact fare, record the personal-item and cabin-bag limits, measure the packed bag, weigh it, and save the relevant baggage page or confirmation. If the rules conflict, contact the airline or booking provider before travelling rather than relying on a general luggage chart. Repeating those checks before every trip is the safest way to avoid an unexpected baggage charge or having your cabin bag placed in the hold.
