Yes, you can absolutely bring a cake on a plane in 2026, but its "travel-friendliness" depends on the filling and the security screening. According to TSA and international aviation guidelines, solid cakes (like sponge, pound, or fruit cakes) are considered solid food and can be brought through security in both carry-on and checked bags. However, if the cake has a liquid or gel-like filling (such as custard, heavy cream, or large amounts of jelly) that exceeds 100ml (3.4 oz), it may be flagged under the "3-1-1" liquids rule and restricted. To ensure a smooth process, pack the cake in a sturdy, transparent container and be prepared to remove it from your bag for X-ray inspection. Note that "ice cream cakes" are notoriously difficult to transport because the dry ice needed to keep them frozen is a restricted hazardous material. For most travelers, a standard baked cake is a perfectly legal and tasty way to celebrate at your destination, provided you handle it with care during the boarding process.