What Size Suitcase Do I Need? — The UK Traveller's Guide
Share
The Most Common Luggage Question — Answered
"What size suitcase do I need?" is the question every traveller asks before buying. Get it right and packing is a breeze. Get it wrong and you're either paying hold baggage fees for an overstuffed cabin bag, or dragging a half-empty large case around for a weekend away.
This guide matches every trip type to the right suitcase size — with honest advice and top picks from our KONO and British Traveller range.
Suitcase Sizes Explained
Suitcases are measured by their height in inches. Here's what each size means in practice:
- Cabin / Carry-On (15"–20") — fits in the overhead locker or under the seat
- Medium / Check-In (24") — ideal for 1–2 week holidays
- Large / Check-In (28") — suits long trips, family travel, or those who like extra space
- Sets (3-piece or 4-piece) — covers every trip in one purchase
Which Size Do You Need?
🧳 Weekend Break or 1–3 Days — Cabin Suitcase (15"–20")
For city breaks, business trips, and short getaways, a cabin suitcase is all you need. You'll skip the baggage reclaim queue, avoid hold luggage fees, and travel faster.
Our pick: The Kono 15" Lightweight ABS+PC Cabin Suitcase at 45×30×20 cm fits easyJet's under-seat allowance and weighs just 2 kg. At £24.99, it's outstanding value from an authorised UK retailer.
For those who need a little more room, the Kono 19" and 20" cabin cases in our hard-shell luggage range offer more capacity while still fitting most airline overhead lockers.
🧳 1–2 Week Holiday — Medium Suitcase (24")
A 24" suitcase is the sweet spot for most holidaymakers. It's large enough for a fortnight's worth of clothes, toiletries, and shoes, but manageable enough to handle on your own.
Our pick: The Kono KSK2482 and KSK2484 24" ABS+PC hard-shell suitcases offer excellent capacity with lightweight construction — leaving more of your airline weight allowance for your belongings. Browse the full range in our hard-shell luggage collection.
🧳 Long Trips or Family Travel — Large Suitcase (28")
A 28" suitcase is ideal for trips of two weeks or more, family holidays where you're sharing a case, or travellers who simply prefer extra space. Bear in mind most airlines have a 23 kg check-in weight limit — so choose a lightweight case to maximise what you can pack.
Our pick: The Kono KSK2477 and KSK2484 28" hard-shell suitcases are built tough with ABS+PC shells and 360° spinner wheels. Find them in our hard-shell luggage collection.
🧳 Every Trip Covered — Luggage Sets
If you travel regularly and want a suitcase for every occasion, a luggage set is the smartest investment. Our 3-piece and 4-piece sets include cabin, medium, and large cases — all matching, all from the same quality range.
Our pick: Browse our full luggage sets collection — including the British Traveller 4-piece bumpy diamond set and the Kono ABS+PC 3-piece sets, available in a wide range of colours.
Quick Reference Guide
- 1–3 days / city break: 15"–20" cabin suitcase
- 4–7 days / week's holiday: 20"–24" medium suitcase
- 1–2 weeks / summer holiday: 24" medium suitcase
- 2+ weeks / long haul: 28" large suitcase
- Family travel: 28" large or a luggage set
- Frequent traveller: 3-piece or 4-piece luggage set
Hard-Shell or Soft-Shell?
Once you've chosen your size, the next decision is shell type. Hard-shell suitcases offer better protection for fragile items and are easier to wipe clean. Soft-shell cases are more flexible and can squeeze into tighter spaces. Read our full hardshell vs softshell guide for a detailed breakdown.
Shop by Size at Neil's Luggage Store
All our suitcases are sold as an authorised UK retailer of KONO and British Traveller — genuine products, fast UK delivery, and a 14-day returns policy.