Southwest, which came to bear a strong association with peanuts over the years, struck a sentimental tone in a statement.
"Peanuts forever will be part of Southwest’s history and DNA," the airline said. "However, to ensure the best on-board experience for everyone, especially for customers with peanut-related allergies, we’ve made the difficult decision to discontinue serving peanuts on all flights beginning August 1."
A 2017 report published in the Journal of Allergy and Clinical Immunology found that approximately 4% of Americans have a food allergy, while additional research has indicated rising levels of peanut allergies in recent years. Airlines have heeded the research, given the rising possibility of allergy attacks striking passengers at 30,000 feet.