The Transportation Security Administration (TSA) allows travelers to include blankets in their carry-on bags and checked luggage. They had this to say about bringing blankets on planes: A blanket is allowed through the checkpoint. Airlines set restrictions for the size and number of carry-on items allowed.

Yes, you can absolutely bring your own blanket to the airport and on the plane, and in 2026, it is highly recommended for both comfort and hygiene. A personal blanket does not usually count as a separate "carry-on" item; most airlines view it as a personal accessory similar to a jacket or a neck pillow. You can drape it over your shoulders or arm while walking through the terminal and boarding. Many travelers prefer "packable" travel blankets made of microfiber or down that can be compressed into a small pouch, as these save space in your backpack once you land. If you bring a large, bulky household blanket, you might be asked to stuff it into your carry-on if the cabin is particularly crowded. Security-wise, blankets are perfectly fine through the TSA or European security checkpoints, though they may be subjected to an extra "swab" for explosives if they are very thick or have a lot of padding. Having your own blanket ensures you stay warm in the notoriously chilly aircraft air conditioning without having to rely on the thin, sometimes scratchy blankets provided by airlines, which are increasingly only available on long-haul international flights.