FYI
Being the old lady I am I often overlook or assume.
For my recent trip to Las Vegas I booked return flight
with American Airlines Volcher. They are partnered with Alaska Air now.
We shuddered from rental hub to terminal 1 American Air.
only one agent for first class check in. We got to counter told
our flight with Alaska Air. That meant walking to end of terminal.
Down to zero level get on another shuddle to terminal three,at end of that
terminal. Then back to center of terminal to security. More walking
to gate F15.
So unlike me read your ticket with all the airline mergers.