Delta 2FA is now live
I just went to Delta.com on a laptop to log in and got a 2FA message - a message with a six-digit code was sent to my email (no option was provided to have it sent to my phone).
After I entered it. I then got what is probably a one-time prompt to confirm contact information on file for recovery purposes.
United starting doing this sometime in the past year or so. Not sure about AA.
I imagine that most of the time, 2FA is not a problem, but occasionally it would be a real pain, like when on an airplane.
Just went to the Delta app, did not get a 2FA message.