Yes, you can bring a sandwich through airport security in Canada in 2026, provided it is a solid food item. According to CATSA (Canadian Air Transport Security Authority) guidelines, sandwiches, wraps, and burgers are permitted in both carry-on and checked baggage for domestic and international flights. However, the "liquid and gel" rule (the 100ml limit) still applies to any spreads or condiments inside the sandwich. If your sandwich has excessive amounts of mayo, mustard, or jam that can be classified as a "gel," it could theoretically be flagged, though standard deli sandwiches almost always pass without issue. If you are traveling to the United States, you must remember that while the sandwich can clear security, it may be confiscated at U.S. Customs if it contains certain fresh fruits, vegetables, or meats (like ham or beef) due to agricultural restrictions. For 2026 travelers, the best "security-proof" sandwich is one made with hard cheese or peanut butter and jelly, which are universally accepted as solids by Canadian screening officers.