Grammar fix
I'd like to check in
request check-in
A polite, standard way to tell airport or hotel staff that you want to register your arrival.
expressionB1common
Hear it in context
Notice where the phrase sounds natural.
- Hi, I'd like to check in for the nine o'clock flight to Rome.airport desk
- A: Good morning, how can I help?
B: Hi, I'd like to check in, please.airport
Fix the pattern
Pattern: I'd like to check in (for [flight/room])
WrongI want check in.
RightI'd like to check in, please.
Use 'I'd like to' + verb for a polite request, and keep the 'to': not 'I want check in'.
PatternI'd like to check in (for [flight/room])
Don't confuse it
Here 'check in' is the arrival request; 'check out' is leaving the hotel at the end.