Checked vs Carry-On Luggage: Which Seattle Size Do You Need?
By Dagne Dover | Published: 2026-10-16
Category: Comparisons
Compare Dagne Dover's 20.5-inch and 23.5-inch Seattle Carry-Ons to decide which size fits your trip, your airline, and your packing style.
Quick answer
For most domestic flights, the smaller Seattle Carry-On (20.5 inch) is the safer carry-on choice because it stays under 21 inches. The larger Seattle (23.5 inch) is still under 24 inches and fits in overhead compartments, but if you prefer to avoid gate-checking on stricter airlines, the smaller size is the better bet. Choose the larger size only if you pack heavy or want extra room and are willing to check it.
What the Seattle sizes actually mean for packing
The Seattle Carry-On comes in two sizes: 20.5 inches and 23.5 inches. Both are described as smooth rolling carry-on suitcases that fit in the overhead compartment on flights. The key difference is how much you can pack and how much flexibility you have at the gate. The 20.5-inch size is under 21 inches, making it a more universally accepted carry-on for domestic flights. The 23.5-inch size is under 24 inches, which is still within carry-on limits for many airlines, but it leaves less margin for error if a gate agent decides to measure.
When to choose the 20.5-inch Seattle
If you want to breeze through the airport without checking a bag, the smaller Seattle is the smarter pick. It is designed to fit in overhead bins and stays under the 21-inch mark that many domestic airlines use as a cutoff. That means you can board with confidence, even on regional jets where overhead space is tighter. It also works well for weekend trips or business travel where you are packing light and want to keep everything with you.
When the 23.5-inch Seattle makes sense
The larger Seattle gives you more packing room while still being classified as a carry-on. At under 24 inches, it fits in overhead compartments on many flights, but it is closer to the limit. If you tend to overpack or need extra space for bulky items like shoes or a jacket, this size can save you from checking a bag on airlines with generous carry-on allowances. However, if you frequently fly on airlines with strict size enforcement, you may end up gate-checking it, which defeats the purpose of a carry-on.
Pairing your luggage with a personal item
Whichever Seattle size you choose, you will likely want a personal item for under the seat. The small Landon Carryall in Dune or Storm is a good companion: it has a petite size that won't impede on a daily commute, and when unsnapped at the sides, it has enough space to hold a change of clothes or farmers market finds. It includes a stretch key leash and pockets for a tablet, charging cords, and a water bottle. A detachable strap makes it easy to carry, and it can slide onto your Seattle's handle for hands-free movement through the airport.
Trade-offs at a glance
- Packing capacity vs. airline flexibility: The 23.5-inch Seattle holds more but is closer to the carry-on limit; the 20.5-inch Seattle holds less but is more universally accepted. If you pack light and want to avoid checking, go smaller. If you need space and can check if needed, go larger.
- Overhead bin fit vs. gate-check risk: Both sizes fit in overhead compartments on flights, but the larger size may be subject to gate-checking on airlines with strict size enforcement. Check your airline's carry-on dimensions before you fly if you choose the larger size.
- Personal item pairing: The small Landon Carryall adds a dedicated spot for a tablet, cords, and a water bottle, and it can unsnap to hold a change of clothes. Use it as your under-seat bag to keep your carry-on organized and your essentials within reach.
Seattle Carry-On and Landon Carryall facts
- Seattle Carry-On Luggage in Ash, Larger - 23.5 inch: Travel with the larger grey Seattle Carry-On, a smooth rolling carry-on suitcase, under 24 inches and fits in the overhead compartment on flights. This size gives you more packing space while still being carry-on compliant on many airlines, but it is closer to the limit, so you may need to check it on stricter carriers.
- Seattle Carry-On Luggage in Ash, Smaller - 20.5 inch: Travel with the smaller grey Seattle Carry-On, a smooth rolling carry-on suitcase, under 21 inches and fits in the overhead compartment on flights. This size is the safer bet for domestic flights because it stays under the 21-inch threshold that many airlines use, reducing the risk of gate-checking.
- Landon Carryall in Dune, Small: Our small Landon Carryall is the ultimate duffle bag for a full day ahead. Its petite size wont impede on a daily commute and when unsnapped at the sides, has enough space to hold a change of clothes for any post-work activity or to pick up a few things at the farmers market on weekends. The small Landon includes a stretch key leash and practical pockets for a tablet, charging cords and water bottle. A detachable... As a personal item, it keeps essentials organized and accessible, and it can slide onto your carry-on handle for easy transport.
Which Seattle size should you get?
Best for
- Travelers who want a guaranteed carry-on for domestic flights
- Weekend trips or business travel with light packing
- Those who prefer to avoid checking bags and want easy overhead bin fit
Not for
- Travelers who need maximum packing space and don't mind checking a bag
- Trips longer than a week where you need to pack bulky items
- Anyone who frequently flies on airlines with strict carry-on size enforcement and wants zero risk of gate-checking
