Yes, you can generally take two pieces of carry-on luggage on most "Full-Service" airlines in 2026, but they must be two different types of bags. The standard allowance is one "Carry-On Bag" (overhead bin) and one "Personal Item" (under-seat). You cannot typically bring two rolling suitcases, even if they are both small; the second item must be a "soft" item like a backpack, laptop bag, or handbag. If you attempt to board with two large bags, the gate agent will likely require you to check one and pay the applicable fee. However, the rules are much stricter for "Basic Economy" or "Budget" fares (like Ryanair, EasyJet, or United Basic Economy), where the allowance is often strictly one single personal item, with no overhead bin access permitted at all. On the other end of the spectrum, Business and First Class passengers on international flights often have an expanded allowance for two overhead bin items. In 2026, airlines are using AI-powered "Size-Scanners" at the gate more frequently, so if your "personal item" is overstuffed and won't fit under the seat, it will be counted as a second carry-on bag, potentially leading to a last-minute charge or forced gate-checking.