check in
US /tʃek ɪn/
UK /tʃek ɪn/

1.
registrarse, facturar
to register one's arrival at a hotel, airport, or other venue
:
•
We need to check in at the hotel before 3 PM.
Necesitamos registrarnos en el hotel antes de las 3 PM.
•
Passengers should check in two hours before their flight.
Los pasajeros deben facturar dos horas antes de su vuelo.
2.
comunicarse, contactar
to make contact with someone, usually to report or get information
:
•
I'll check in with you later to see how it's going.
Me pondré en contacto contigo más tarde para ver cómo va.
•
She always checks in with her parents when she travels.
Ella siempre se comunica con sus padres cuando viaja.