Announcing the deal on Wednesday (15 November), Airbus said U.S. investment firm Indigo Partners would be buying 430 aircraft A320s worth $49.5bn (£37.6bn) on catalogue prices, though a bulk-buy order of this size would carry discounts.
Indigo's managing partner, Bill Franke, 80, flew to Dubai for the signing ceremony, although there are still final details of the deal to be worked out.
Indigo will distribute the 273 A320neos and 157 A321neos among the four ultra-low-cost airlines, with Wizz getting the largest share.
Not to be outdone, Boeing announced an order for 175 737 Max jets from discount carrier FlyDubai.
He said: "It's gratifying that [this order] comes from a group of airline professionals who know our products as well as the folks at Indigo Partners do".
This order, the largest in the history of Airbus, will more than double the backlog, net of the european giant this year, which was 288 devices at the end of October.
Disneyland shuts down water cooling towers after cases of Legionnaires' disease
The towers were chemically treated to combat the problem, and there is no ongoing threat to guests' health, the Register reports. People who are particularly susceptible to the disease are older adults, smokers, and people with weakened immune systems.
FlyDubai said the planes would bring the low-priced carriers total fleet on order up to 320.
The A320neo and the A321neo are twin-engine, single-aisle planes popular among airlines due to their reduced fuel consumption.
Boeing 777 freighters have a list price of $325.7 million. The new crop of aircraft will be added to the flydubai fleet from as soon as 2019. The rest of the order comprises MAX 8 and MAX 9 aircraft. "We look forward to the 787 becoming an integral part of EgyptAir's fleet as we progress our modernization and network expansion plans", Safwat Musallam, chairman and CEO of EgyptAir Holding Co., said in a news release. This record-breaking agreement builds on our strong partnership with flydubai.
Emirates now relies exclusively on the Airbus 380 and the Boeing 777 for its flights, making it the largest operator of both.
The largest worldwide airline in the world, Emirates, made public today their over 15 billion dollars commitment for 40 Dreamliners of Boeing 787-10. AerCap is the world's largest lessor of the Airbus A320neo; and the largest customer of the Boeing 787, with 116 on order and owned.
But even with that factored this, Dubai's airshow has become a highlight of this year's race for sales supremacy between the two companies.