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"By bus" is a phrase which is often translated as "en autobús", and "on the bus" is a phrase which is often translated as "en el autobús". Learn more about the difference between "by bus" and "on the bus" below.
by bus( 
bay
buhs
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. en autobús 
Why don't we travel by bus? It's much cheaper.¿Por qué no viajamos en autobús? Es mucho más barato.
b. en bus 
I came to Oakland by bus, but I'll leave by plane.Llegué a Oakland en bus, pero regresaré en avión.
on the bus(  
an
thuh
buhs
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. en el autobús 
There was a man on the bus that was selling ham and cheese sandwiches.Había un hombre en el autobús que vendía panes de jamón y queso.
b. en el bus 
I work in another city, so I feel like I'm always on the bus.Trabajo en otra ciudad, así que siento como si siempre estuviera en el bus.