And in most cases, even if airlines do list a specific pound or kilogram limit on their websites, they likely won't weigh your carry-on bags. As long as your pack doesn't appear to be overstuffed, you're probably OK. Weight is much more important for small commuter planes, mostly due to safety regulations.

In 2026, the likelihood of having your carry-on weighed depends on the airline and the region. European, Asian, and Australian carriers (like Ryanair, Emirates, or Qantas) are extremely strict and often weigh bags at the check-in counter or the gate, enforcing a standard 7kg (15 lbs) limit. If you exceed this, you will be forced to pay high gate-check fees. In the United States, major carriers like Delta, United, and American rarely weigh carry-ons for domestic flights, focusing instead on size dimensions (typically 22 x 14 x 9 inches). However, budget airlines like Spirit or Frontier have begun using automated scanners and scales at the gate to maximize revenue. For 2026 travelers, the rule of thumb is: if you are flying internationally or on a low-cost carrier, expect your bag to be weighed; if you are flying a full-service US domestic carrier, size is your primary concern.