Disculpe,
¿ya
están
abordando
en
la
puerta
de
embarque
ocho?
dees-KOOL-peh, yah es-TAHN ah-bor-DAHN-doh en lah PWEHR-tah deh em-BAR-keh OH-choh
Excuse me, are they already boarding at gate eight?
'Puerta de embarque' is boarding gate. You may also hear just 'puerta' or 'sala' used informally.