I have a hip carrier, paid £15 on Amazon & used it when we flew to Paris last year, came in handy when getting on & off the plane
I have the momcosy hip seat. My LO is 10 months old and doesn't like to be strapped in. The hip seat takes all of her weight and I just have my arm around her
Senarah is a carry assist that isn't hands free. Look up ring slings, lifft sling pouch or hippie joey.