Does anyone know approximately what would be required and what would be the cost to recommission both Concorde fleets?

Do you really expects us to know such a figure? Someone may though I’m guessing it’s not likely.

Seeing as they are out of commission my best guess is that it would cost more money than it would bring in ;) May I ask why you want to know this? school project? curiousity?

The Concorde wasn’t successful. In a world where the majority of people always opt for the cheapest flight ticket possible, finding people willing to pay many times the regular price to arrive a couple hours early isn’t easy.

Some people view the loss of the Concorde as “back tracking” and de-evolution, but I disagree. The Concorde was pretty great, but it simply never added anything that the majority of people felt was worth paying for.

I don’t think we’ve seen the last of high speed international travel, and I think that when we do, it’ll be in the form of something that either adds enough value to make it worth paying a premium, or it’ll be affordable enough to bring the gap together.

Just curious.

Though i dont feel that the Concordes not being for the masses equals a lack of success.

I’m pretty sure it would require an act of Parliament in both Britain and France, since the Concordes were operated by the national airlines of each country. However, as @richardhenry said, the Concorde was never a commercial success, so I don’t think there’s much demand for this to happen.