China International Airlines, China Southern Airlines, China Eastern Airlines, Shanghai Airlines, Hainan Airlines and other major airlines can provide free meals.

Low-cost airlines such as Okay Airways and Spring Airlines do not provide free catering services, so they can buy them on the plane at their own expense. Extended information:

airplane meals are meals provided to passengers by civil aviation aircraft during the voyage. The menu of airplane meals is determined by airlines, and is generally supplied by designated catering agencies. It is prepared near the airport and delivered directly to the airplane. When the airplane is stable in the middle of the flight, the flight attendant puts it on a trolley and distributes it to passengers. ?

There are differences in the menu, quantity and cost of airplane meals in different classes. First-class and business class airplane meals try to imitate high-class restaurants in food and dining procedures, but they are always different from real restaurants. Economy class airplane meals are similar to fast food. Distribution efficiency, storage volume and cost are the main considerations, and the taste of the food is certainly difficult to make passengers have high expectations. There will be national standards for airplane meals in 2114, and the shelf life cannot exceed 36 hours.

reference: Baidu encyclopedia of airplane meals.