The planned purchase, which entails deliveries over the next eight years, comes after the European Aerospace giant overtook Boeing last year in terms of aircraft orders, booking 1,109 against the US company's 718.
"The announcement of the investment in 80 Airbus aircraft by Volaris for a total $9.3 billion is very important," Mexican Communications Minister Gerardo Ruiz said, accompanied by Volaris executives.
Volaris CEO Enrique Beltranena said it was "the biggest plane order signed in the history" of Mexico.
He said 40 of the planes will be delivered between 2018 and 2021 and the rest by 2026.
Volaris, created in 2006, has routes across Mexico and to 78 destinations abroad. Last year it transported more than 320,000 passengers.
At the end of 2017, Airbus' overall backlog stood at 7,265 aircraft valued at $1.059 trillion (867 billion euros) at list prices, the company said.
Its A320 family of short- and medium-haul jets is a production mainstay, and Airbus has invested in new-generation versions of it that are more fuel efficient.
In contrast, sales of Airbus's flagship giant A380 double-decker planes has been disappointing, with only 317 ordered since its launch in 2007. The company has suggested further A380 production could be threatened if key customer Emirates did not order any more.
(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)
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