Airline food is food served to passengers on an airplane. It is usually included in the price of the ticket, except for most low-cost airlines.  Some airlines now have a buy-on-board menu, in which food and drinks are typically sold.  Some airline now offer small snacks, instead of meals. 
- Traveler, Independent (19 June 2017). "A Guide to Airline Meals and Snacks".
- "Buy On-Board Meals?". www.cbsnews.com.
- Staff, Follow MeHipmunk (3 July 2015). "The History of In-Flight Peanuts and Snacks (and Which Airlines Offer Great Selections)". Tailwind by Hipmunk.