E-ticket

US /ˈiːˌtɪkɪt/
UK /ˈiːˌtɪkɪt/
"E-ticket" picture
1.

an electronic ticket, especially for air travel, which is stored in a computer and can be printed out by the customer

:
I received my e-ticket for the flight via email.
You just need to show your e-ticket at the check-in counter.