Huge price difference pushing me to other airlines

I am not a frequent traveler, nowhere near a million miler. I have flown mainly Delta for the last several years because I have liked the service and the schedule and the price wasn’t too far above the rest. I indulge in flying first class because I can and for comfort. This week I bought tickets to fly to visit my mother. The price from Delta was over $1,000 more than American, so guess what airline I booked?

The last few times I’ve flown (December and February) the ticket price gap was there but not that big. I was shocked by the gap this time and am now reconsidering flying Delta at all.