AITA for not giving up my window seat on a plane to a kid just because she threw a tantrum?

I was on a domestic flight, and I had specifically booked a window seat because I love looking out at the view, it’s one of the few things I actually enjoy about flying.

After I settled into my seat, a family boarded: a dad, a mom, and their little girl, who looked about six years old. The dad had an aisle seat, the mom was in the middle, and the kid was supposed to sit next to me in the other aisle seat. Everything seemed fine until the girl realized she wasn’t sitting by the window.

She immediately started complaining:
“I want the window! I want the window!”
Her parents tried to calm her down, but she quickly escalated into a full-blown tantrum, crying and yelling about how she wanted my seat.

At this point, the dad leaned over and asked,
“Would you mind switching seats with her? She’s just a kid.”

I politely explained that I had booked the window seat in advance because I really wanted to enjoy the view. The dad insisted, saying it would be “nice of me” and that “it wouldn’t hurt” to switch.

I reiterated that I understood his frustration but didn’t think his daughter’s tantrum was a valid reason for me to give up a seat I specifically reserved. He sighed and tried to push further, but I stood my ground.

The girl cried for about 10 more minutes before her mom managed to calm her down with a tablet. However, the tension lingered. Throughout the flight, I could feel the parents throwing me judgmental looks, and when we landed, I overheard the mom muttering something like, “Some people just have no heart.”

This made me wonder if I had been too rigid. I know kids can be a handful, but I also feel like giving in would’ve taught her that throwing a tantrum gets her what she wants. Still, I couldn’t shake off the guilt.

So, AITA?