indian lowcost carrier indigo said monday it had ordered a 500 a320 airliners from european manufacturer airbus at the paris air show in the largest ever civil aviation deal here is a list of major orders by size on the first day of the paris air show indigo places a historic order of 500 a320 family aircraft the order is worth 55 billion at list prices  although the closelyheld actual sale prices are usually lower for large orders  and the planes should be delivered between 2030 and 2035 the order takes the number of a320 family aircraft requested by indigo to at least 1230 rival air india had been the previous recordholder for the largest single order at 470 aircraft in february 2022 at a list price of more than 70 billion  although that was split between airbus and american competitor boeing american airlines ordered 460 singleaisle aircraft 260 airbus a320 and 200 boeing 737 at a catalogue price of 38 billion airbus won its biggest order at the time when indigo partners a us private equity firm which holds stakes in a number of carriers including frontier airlines in the united states jetsmart in chile volaris in mexico and wizz air in europe indias indigo places a firm order for 300 airbus a320neo jets at a catalogue price of 33 billion four chinese airlines  air china china eastern china southern and shenzhen airlines  place simultaneous orders for a total of 292 a320neo aircraft from airbus worth 37 billion at list prices indigo partners orders 255 airbus a321 planes worth 33 billion for use by wizz air frontier volaris and jetsmart