In a statement Friday, LOT said its demands "have not been compensated in any form" by Boeing. LOT's aircraft were grounded earlier this year - along with the world's entire 787 fleet - after some of the planes developed battery problems.
LOT's statement contrasts with a recent comment from Boeing Chairman and CEO Jim McNerney that the aircraft manufacturer has finished paying those whose 787 were grounded.
The grounding and loss of revenue from passengers was a blow to LOT, which is undergoing a restructuring. The Polish government has said more than $30 million was last from cancelled flights alone.