Checked Bags: Yes If the food is packed with ice or ice packs in a cooler or other container, the ice or ice packs must be completely frozen when brought through screening. If the ice or ice packs are partially melted and have any liquid at the bottom of the container, they will not be permitted.

Yes, you can take a cooler through airport security, but the "success" of the process depends entirely on what is inside it. The cooler itself is perfectly fine as a carry-on or checked item, provided it fits the airline's size dimensions. However, the ice or gel packs inside are subject to strict TSA rules. According to the 3-1-1 liquids rule, any ice or gel packs must be completely frozen solid when they pass through the security checkpoint. If there is any liquid at the bottom of the cooler or if the gel packs have started to slush or melt, they will be confiscated as "unauthorized liquids" over 3.4 oz. Many travelers find it easier to pack the cooler with frozen food and then add ice from a terminal restaurant once they are past security. If you are checking the cooler, ensure it is made of a durable material that won't crack under the pressure of other luggage and that the lid is securely taped or strapped shut, as standard latches often fail during the rough handling of the baggage system.