Polish flag-carrier LOT is intending to wet-lease an Airbus A330 to replace, in the interim, its grounded Boeing 787 fleet.
The airline had received its first 787 just weeks before the mid-January grounding caused by unexplained battery malfunctions.
LOT says it will lease the A330-200 from mid-April to the end of May, acquiring the aircraft via Portuguese operator HiFly.
The airline will deploy the type - configured with 18 business-class and 288 economy-class seats - on transatlantic services.
LOT says the initial flights will be conducted on 12 April and that the twinjet will serve Chicago and New York. The airline will contribute some of its own cabin crew to the services.
It says the lease will ensure passengers have a "comfortable journey" while its 787s are unable to operate.
"Service standards and on-board service will be the same as on aircraft belonging to the Polish carrier," it adds.
HiFly will lease a Rolls-Royce Trent 700-powered A330-200 (CS-TFZ) to the airline.