Picking a suitcase size seems simple, until you're sitting on an overstuffed bag or paying overweight fees at check-in. The right size depends on how long you're traveling, how you pack, and how you're getting there. Here's a simple guide to help you choose.
Why Suitcase Size Matters
A bag that's too small leaves you short on space, while one that's too big is heavy to carry and easy to overpack past airline weight limits. The right size keeps travel easy and affordable.
Common Suitcase Sizes
Carry-on (18 to 22 inches)
Best for: 1 to 5 days, business trips, and light packers. Fits in overhead bins on most airlines. The NINETYGO 20 Inch Carry-On is a reliable pick.
Medium checked (23 to 26 inches)
Best for: 5 to 10 days or one person on a longer trip. Holds more without getting too heavy. Try the mixi 24'' Spinner Luggage with Front Pocket or the 24 Inch Hard Shell Expandable Check-In Luggage.
Large checked (27 to 32 inches)
Best for: 10+ days, family packing, or bulky winter clothes. The 28 Inch Large Checked Luggage and the Amazon Basics 30-Inch Hardside Checked Luggage offer plenty of space.
Luggage sets
If you travel for different trip lengths, a set covers everything. The 3-Piece Hard Shell Luggage Set includes a carry-on and checked sizes that nest together for storage.
How to Choose the Right Size
1. Match size to trip length
A rough rule: carry-on for under a week, medium for one to two weeks, and large for longer trips or shared packing.
2. Check airline weight limits
Many airlines limit checked bags to about 50 lb (23 kg). Larger suitcases can go over that quickly.
3. Think about how you'll move
Lots of trains, stairs, or walking? Smaller bags are easier to handle.
4. Consider expandability
Expandable zippers give extra room for souvenirs on the way home.
Tips and Mistakes to Avoid
- Don't buy the biggest bag "just in case." You'll likely overpack.
- Weigh your packed bag at home before you leave.
- Use packing cubes to fit more into a smaller suitcase.
- Check both size and weight rules for international flights.
Shop the Collection
Explore Ttavello's Luggage collection for carry-ons, checked suitcases, and luggage sets in every size.
Related Guides
Read next: Carry-On Size Guide: What Travelers Should Know Before Flying, Hard-Shell vs. Soft-Sided Luggage: Which Should You Choose?, and Packing Cubes and Organizers: Are They Really Worth It?