Boeing booked new sales of 44 single-aisle 737s on its order Web site Thursday.

Boeing booked new sales of 44 single-aisle 737s on its order Web site Thursday. That boosts Boeing’s net sales tally for the year to 177 jets ahead of the Farnborough Air Show later this month.

Australian low-cost carrier Virgin Blue ordered one of the Renton-built jets, but the other 43 went to unidentified customers. Boeing may reveal some of the airlines behind the orders at Farnborough.

Thursday’s orders at list prices are worth a total of more than $3 billion. Assuming standard discounts based on data from aircraft valuation firm Avitas, the actual value is closer to about $2 billion.