To officially tell someone you have arrived at a hotel, airport, or event, usually by giving your details.
We need to check in at the hotel before 3 p.m.
A: What time do we check in for our flight? B: Usually two hours before departure.
When I travel for business, I always check in online to save time at the airport.
Common mistake
✗We checked in the hotel at noon.
✓We checked into the hotel at noon. / We checked in at the hotel at noon.
'Check INTO / check IN AT' a place — bare 'check in the hotel' is wrong.
Tell it apart
We checked in at 2pm.
registered our arrival
We checked out at 11am.
paid and left
You often check in at hotels, airports, or conferences. Sometimes you need to show your ID or booking details.Not the same as 'check out', which means to leave and pay.
To contact someone for a short time to see how they are or to give a quick update.
I like to check in with my parents every weekend.
A: Hey, just checking in—how's your new job going? B: Thanks for asking! It's going really well so far.
I think it's important to check in with your friends regularly, especially if they live far away.
Common mistake
✗I wanted to check in you.
✓I wanted to check in with you.
'Check IN WITH someone' — don't drop 'with'.
Tell it apart
I'll check in with you next week.
briefly touch base
I'll check up on you next week.
make sure you're okay — can sound like monitoring
You can check in with friends, family, or colleagues, often by phone or message.'Check in' is more about keeping in touch, while 'check on' is about making sure someone is okay.
To pause and consciously assess your own feelings, thoughts, or progress, often as part of self-care or personal development.
It's important to check in with yourself regularly to make sure you're not feeling overwhelmed.
A: I've been feeling really stressed lately. B: Maybe take a moment to check in with yourself and see what's causing it.
Many experts recommend that students check in with themselves during exam periods to monitor their stress levels and maintain wellbeing.
Common mistake
✗I try to check in to myself each morning.
✓I try to check in with myself each morning.
'Check in WITH yourself', not 'to'.
Tell it apart
Take a moment to check in with yourself.
notice how you feel
Take a moment to check up on the kids.
see that they're okay
This sense is common in discussions about mental health, coaching, or self-improvement. It is neutral in register and often used in both spoken and written contexts, especially in advice or self-help materials.Unlike the B1 sense of 'check in' (registering arrival) or the B2 sense (contacting someone briefly), this sense is figurative and refers to turning your attention inward to assess your own state or progress.