British Airways and easyJet are being tipped to place multi-billion pound aircraft orders at this week’s Paris Air Show.
BA is expected to confirm a deal for about 10 stretched versions for the Boeing 787 Dreamliner worth £1.6 billion.
The 787-10s will have a capacity for 320 passengers and come on top of 24 Dreamliners already ordered, according to the Sunday Times.
EasyJet is reported to be finalising negotiations with Airbus to order more than 100 new-generation Airbus A320neos for more than £6 billion plus options on a further 100.
It would be the budget airline’s first major order in more than a decade.
But the order will require shareholder approval and is likely to reignite the long-running on-off row with founder and major shareholder Sir Stelios Haji-Iaonnou, the Daily Telegraph reported.
Singapore Airlines is also expected to join BA in opting for the larger 787.