(Bloomberg) — The global aviation industry descends on Paris once again next week following a four-year hiatus. At the Paris Air Show, airlines and leasing companies will place orders, manufacturers will show off civil and military aircraft, and executives will tout new technologies like flying taxis and electric propulsion as the industry pushes toward decarbonization. 

Even before the event, which kicks off officially on June 19, carriers have scrambled to replenish their order books as they brace for a robust post-pandemic recovery. Among the big-ticket purchases and commitments have been Ryanair Holdings Plc, Air India and new Saudi airline Riyadh Air, which introduces its brand at the expo and might use the show to come back for more planes.

Stuart Hatcher, the chief economist at aviation consultant IBA, estimates that this year’s event might produce about 2,100 orders and commitments, with the likes of Air France-KLM, Delta Air Lines Inc. or Malaysian Airlines Bhd considering deals.

With deliveries still hampered by strained supply chains, many customers want to lock in orders now to avoid being relegated to the end of the line. Airbus SE has said it’s sold out almost until the end of the decade for narrowbody jets, and Boeing Co. also has few near-term delivery slots. It’s not just the smaller aircraft that are becoming harder to find, but also increasingly widebodies, flown on global routes that are more popular than ever after most countries dropped travel restrictions.

“These are not orders for the 2020s but for the 2030s,” Hatcher said in a preview of the show’s activity. “This time it feels like a race to grab market share in unproven markets based on long-term predictions that have yet to show their full potential.”

The optimism is underpinned by recovery that the International Air Transport Association predicts will see global airlines earning a collective $9.8 billion in profit this year. That’s double its previous estimate from December as a surge in flying in North America and Europe drives up ticket prices.

At the last Paris Air Show in 2019, airlines and lessors agreed to buy as many as 866 planes, according to FlightGlobal. Airbus had the upper hand at the event because Boeing’s Max model was grounded at the time following two deadly crashes. 

Last year at the Farnborough expo in the UK, which alternates with Paris as the biggest industry showcase, orders and commitments for aircraft reached 511 — only about a third of the almost 1,500 sold at the same show in 2018. Boeing secured the lion’s share of the haul, driven by the 737 Max, while Airbus garnered just 29 orders.

Following is a list of potential deals that might unfold in Paris, based on previously reported discussions and comments by executives. 

Other carriers are also working to pin down deals although those may not materialize at the show including a record 600 plane order from Turkish Airlines and a follow on order from Emirates, the world’s biggest long-haul carrier, for as many as 150 aircraft. 

—With assistance from Danny Lee, Kate Duffy and Albertina Torsoli.