Breakdown of Estamos aburridos por el retraso.
estar
to be (location/state)
aburrido
boring / bored
por
for / by / through / in/during (part of the day)
el retraso
the delay
Questions & Answers about Estamos aburridos por el retraso.
Why is por used here instead of para?
In this sentence, por shows the cause or reason for something. We are bored because of the delay. When you want to express "because of" or "due to" a noun, por is the preposition you need.
Why do we use estamos instead of somos?
Why does aburridos end in an -s?