Not the same situation.Well in 1981 Israel didn't ask anybody for overflight rights when they bombed Osirak reactor right ?
I agree Turkey would refuse those rights and its air force is good enough to be able to enforce control over its airspace. However Jordan doesn't and I'm not sure USAF or USN still patrol that tightly northern Iraq's Kurdish airspace. Besides, would USAF jets really open fire on IDF fighterbombers ? Hmmm.
As an alternative, IDF jets could fly low over Saudi desert close to the Iraqi border and reach Iran by flying over the Persian Gulf. I'm not sure Saudis control their airspace very tightly despite their very good F15s. Though the Persian Gulf is very crowded with USN jets off Bahrein and carriers. So I'd go for the first route through Jordan and northern Iraq.
cheers
1) It was shorter range. They could fly nap of the earth. Not possible to the more distant Iranian targets. They'd have to be up at economical cruising altitude, where anyone could see them.
2) The air defences of the overflown countries (Saudi Arabia on the way out) were far, far weaker. Partly in response to that raid, the Saudis have greatly improved their radar & figther coverage of the north. The same raid now would be detected before it entered Saudi airspace. Back then, it wasn't spotted at all.
3) It was a surprise. It wouldn't be this time. Makes a difference.
4) More countries to overfly this time.
5) They had one target, in the nearest part of Iraq to Israel. This time, the targets are dispersed, hundreds of kilometres apart (& that ain't an accident!) & not close to the western border.
6) The targets now have dedicated air-defence assets, unlike Osirak.
7) Flying over northern Iraq would mean a roundabout route to some of the targets. Remember, they're dispersed!
It's a different world!