Check in Meaning in English
expression
Definition
To report your arrival and register at a place such as a hotel or airport. Also, to let others know you have arrived somewhere or are present.
Usage & Nuances
Most common in travel, hotels, and airports ('check in at the desk', 'check in for a flight'). Also used with apps and social media ('check in on Facebook'). In informal speech, 'check in' can mean contacting someone for an update ('I'll check in with you later'). Do not confuse with 'check on' (to look after).
Example Sentences
Please check in at the front desk when you arrive.
basic
We need to check in for our flight two hours before departure.
basic
You can check in online to save time at the airport.
basic
I'll check in with you later to see how things are going.
natural
When you get to the hotel, just check in and I'll meet you in the lobby.
natural
Don’t forget to check in on Facebook when we arrive at the concert.
natural