Unable to login to Delta.com on Safari on my iMac

I have been trying to figure out why i can log into Delta.com through Chrome but not Safari. I even took out an old machine that runs High Sierra and has Safari 13.1 to see if i could determine if this was a Delta problem or an Apple problem. Since I could not get on in Safari 13.1 i conclude a Delta change created this. In trouble shooting i tried all the suggestions made here and other posts.... - turn off Content Blocker, - allow pop-ups and turning on the Auto Play functions...... those changes did not work. After that i started going through the Safari Settings. I deleted a Delta entry in the "Manage Website Data" inside the Privacy Tab and that did not work. I then decided to turn off "Prevent Cross-Site tracking"....... and that is the culprit... I am now able to log into my Delta Account with Safari. My guess is that Delta wants this cross tracking for their partners and integrators so they have implemented a change in their system to make sure this can happen. Safari has had this Cross-tracking switch all the way back to Safari 13.1, and likely sooner, so it's not an Apple Issue. Not sure how i feel about being forced to allow cross tracking.

Here's the (temporary) fix: In Safari Preferences --> Developer, select "Security: Disable cross-origin restrictions"

This is an unfortunate work-around as it could open your Mac to other vulnerabilities.

Delta needs to code a site-specific fix for delta.com.

My husband had this issue. He had to allow popups for Delta and allow autoplay for Delta in Safari settings. Doing both of those things fixed most of the problem for him. However, the SkyMiles tracker still wasn't working properly.

I've had the same problem. Allowing pop-ups (Safari Preferences > Websites > Pop-up Windows) let me log in, but I still wasn't able to complete any ticket purchases (hung at the Confirm flights stage). It worked fine in Firefox.

For what it's worth, I've filed a bug report at developer.apple.com (FB13533520).

I changed the setting to allow pop-ups and the issue went away.

I just started having this problem today. Seems to be after update of OS to Sonoma 14.2.1. Safari version is 17.2.1. I get the error 'unable to locate the account with the information provided'.

I am able to log on to Delta.com on the same computer in Chrome. I can also log on in the Delta App on my iPhone,

I have pop-ups allowed in the Safari settings for Delta.com.

This definitely is a browser compatibility issue with Delta and Safari. Very annoying and needs to be fixed ASAP.

Change the password!!! That works for me

Delta just informed me that they are aware of this issue and are working on it. Maybe it will be fixed by spring!

Works with DuckDuckGo

Chrome browser works.

The Delta app works.

The only place I can't log in is Mac Safari.

Same here after updating to Sonoma on MacBook Air in mid-Dec. Can log on in Chrome but not Safari. Of course, had to change my password and get locked out 525,600 times in the process. Delta denied any issue on their end in early January.

So Annoyed and Frustrated. I have tried repeatedly to log into delta.com on my Mac (Safari running 17.2.1) today. NO luck. Tried my husband's login, NO luck. Tried Chrome, NO luck. Tried allowing pop ups and autoplay, NO luck. Tried on my iPad, NO luck. The App on my phone works. Delta couldn't help. My safari on my phone works. What gives????

Does Apple have stock in other browsers because I'm having to use them more and more. Safari is turning into a piece of .....

Unable to open and I have to force load without content blockers? Really? Is Apple going to keep me from running with scissors as well?

This is happening on my iPad. Same issues. I have the latest updates and I use DuckDuckGo. Doesn’t work. Chatted with Delta for an hour. Opened a ticket. Who knows what will happen. I have to use my iPhone now to book tickets. Ugh.