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I did web check-in last night.
A staff member helped me check in.
Have you finished checking in?
For international flights, checking in three hours early is safe.
Checking in early gets you better seats.
At check-in, they said window seats were full.
I asked about an upgrade at the check-in counter.
My friend and I booked separately but checked in for the same flight.
I gave my mileage number at check-in.
I exchanged money before check-in.
I weighed my bags before check-in.
Once you check your bags, check-in is complete.