Middle Eastern airline Emirates placed an order for $15bn (£11.4bn) worth of new aircraft from Boeing today, but failed to confirm another order with Airbus.
The airline will buy 40 jets from Boeing, to be delivered from 2022. Both Rolls-Royce and General Electric will be hoping to win the chance to supply engines to the new fleet.
But Airbus was left out in the cold, after another deal which was expected to be confirmed on the same day was not closed. The company had been hoping to sell its A380 superjumbo model, but envoys at the Dubai Airshow were disappointed, according to Reuters.
The discussions between Emirates and Airbus are understood to be ongoing, and could be finalised in time for another announcement this week. The Airshow concludes on Thursday.
This weekend at the show, the United Arab Emirates agreed a deal to upgrade 80 F-16 jet fighters.
The UAE's defence ministry said it would pay Lockheed Martin 6bn dirhams (£1.24bn) for the project. The government department also signed deals for ammunition, and is said to be interested in buying up fifth generation fighter jets.