air travel 航空旅行

carry-on bag 随身携带的包

checked baggage 托运的行李

check-in 办理登记手续

After you check your bags at the check-in desk, you still have to go through airport security. 

security 机场安检

Security will ask you, "May I please see your passport?"

Are you flying domestic or international?

The flight has been canceled due to bad weather.

Your flight is on time! It's leaving from Gate 8.

Can you please tell me the flight number and departure time?

to board a flight 登机

aisle seat  靠走道的座位

window seat 靠窗的座位

I prefer the aisle seat.

I'd like a window seat, please.

arrivals 到达 departures 出发

There are fifty arrivals and departures every hour.

Excuse me, ma'am. Where can I find arrivals and departures?

Those monitors show  arrivals and departures.

Have a safe flight! 旅途愉快，一路平安！