Alaska Airlines

From their website:

“Alaska Airlines acknowledges customer concerns regarding peanut allergies. For this reason, we do not want to create false expectations with regard to the aircraft environment.”

“We are unable to guarantee a peanut or allergen-free flight, nor can we prevent other customers from bringing peanuts or products containing peanuts onboard our flights.”

“Note: Alaska Airlines meals and snacks may contain peanut-related ingredients. We encourage customers who are allergic to peanuts to bring their own food items for travel.”

Jan. 2012