Airbus has announced another $4.9 billion in orders at Farnborough Airshow ahead of an expected big announcement from arch-rival Boeing.

On the fourth day of the U.K. airshow, Airbus says Russian carrier UTair has ordered 20 short-haul A321s in a deal is valued at $2 billion at list prices.

The European manufacturer also announced Thursday that Synergy Aerospace has firmed up a previous $1.9 billion order for nine long-haul A330 planes. In addition, it says Middle East Airlines has signed a memorandum of understanding to buy 10 A320neo aircraft, worth $1 billion at list prices.

Customers rarely pay the full list price when ordering big.

Boeing is later expected to reveal details of a deal with United Airlines.