As this game is not played in Spanish-speaking countries, there is no proper term for it. Probably the best translation would be "fútbol americano con banderas", (American football with flags), but you would have to describe it for a Spanish speaker to understand how flag-football is played.
bandera
(the verb to flag, or specially mark, is the verb desfallecer)
La bandera cubana.
Bandera
Bandera
El significado de los colores de la bandera de Costa Rica.
The Spanish word for "soccer" is "fútbol", which translates to the English word "football", or "fútbol asociación", which translates to "Association football".
Sister in law in Spanish is cunada.
How to say "hi" in spanish is Hola. How to say "bye" in spanish is Adios.
flag is bandera in Spanish
The flag in Spanish is "la bandera".
bandera
eseana
Football in Spanish is fútbol. :)
bandera girando
futbol
Flag football or touch football
La bandera de Uruguay.
Mirando fútbol.
i say in front.
dia de la banderita