Can you check in cooking oil on an airplane? If you are taking a domestic flight, you can bring 1 liter of cooking oil onto the plane with you, but you need to check it in. If you're taking an international flight, you can't bring more than 100 milliliters of cooking oil per person per carry-on. Air consignment, also known as air transportation, is an important part of modern logistics, which is to use the aircraft as a carrier to provide safe, fast, convenient and high-quality services. Have high efficiency and can provide comprehensive logistics services airport in reducing commodity production and operating costs, improve product quality, protect the ecological environment, accelerate commodity turnover and so on will play an important role.