As of 2026, the vast majority of major global airlines have completely eliminated peanuts from their onboard snack menus to protect passengers with life-threatening allergies. In the United States, Southwest Airlines famously nixed peanuts in 2018, and other major carriers like Delta, United, American, and JetBlue followed suit. However, in early 2026, Southwest sparked controversy by introducing pistachios as a premium snack for extra-legroom seats, drawing criticism from allergy advocates who argue that tree nuts still pose a significant airborne risk. While most airlines are now "peanut-free," many still serve other tree nuts like almonds or cashews, particularly in First and Business Class. Airlines like British Airways and EasyJet have gone a step further by offering "nut-free buffer zones" upon request, where flight attendants ask nearby passengers to refrain from eating nut products during the flight to ensure a safer environment for sensitive travelers.