1. Don't forget to check (at/in) two hours before your flight.
2. If you don't throw these scissors (away/up), you'll be in trouble with the security check.
3. We'll have to get rid (of/off) these old newspapers. Nobody needs them.
4. Hurry up! Your flight is (on/in) time.
5. I like to sit (by/in) the window, but I got a place (by/in) the aisle.
6. You don't have to take (off/away) your hat at passport control.