No, I could not free fly Alfie. He sometimes spooks and just flies off in any which direction- so this would be particularly hazardous outside. He could be helped by a gust of wind which would carry him further away, he could get hit by a car or injured by an animal... it's just not worth the risk. Plus, he's not very good at recalling. If he doesn't want to fly to me, he won't. I can get as excited about it as I like, I can offer treats, toys and fuss... but if he's got something else on his mind, he will NOT come to me. So he's not a particularly good candidate for free flying.
If I was going to take him outside to fly, I'd have him on a harness. But I'd have to get over several hurdles to harness train him. (He's not fond of having his back touched and wings are a total no go area unless you want a bite).
Some people have trained parrots to free fly and it looks like an incredible experience- check out the "BirdTricks" channel on youtube, for example- they free fly a lot of their birds and post videos about it. https://www.youtube.com/channel/UC1BpMn4ErGPo8XB3Rzltojg?&ab_channel=BirdTricks However, I don't think I could ever get to that stage with Alfie.