While to-go food and establishments are still not the norm in Spain and very much the exception, in case you are faced with a restaurant or shop that offers meals to-go, then the correct term would be comida para llevar (food to go). Here are some examples of use: Es para llevar, por favor. (It’s to go please.) Quisera pedir para llevar, por favor (I would like to order to-go, please.)