We know that many Space Shuttles / Rockets etc. carry their own oxidizer with them. This is partly because at the heights they operate the atmosphere is too rarefied to have enough oxygen to sustain the combustion rates they need.
But also, the liquid oxidizer means small pumps can be used instead of massive compressor stages. Which motivates the following question:
Would it be feasible for a typical passenger jet to carry along its own Oxidizer? I am looking for a back of the envelope feasibility calculation. It intuitively sounds impractical but I'm just curious to see some back of the envelope estimates of how much ( weight / volume) of Liq. O2 tanks would be needed if we hypothetically had something like a B-747 with its own cryogenic Oxygen tanks in addition to already extant massive fuel tanks.
Partially motivated by this related SE Aviation Question and a comment by User @Freeman: