KIEV, Jan. 31 - Ukraine International Airlines (UIA) and AeroSvit, Ukraine??™s two biggest airlines, warned on Wednesday they may halt flights from Feb. 1 after supplier of jet fuel had dramatically boosted prices.

"Today we have fuel, but prices suggested by fuel companies are not economically feasible,??? UIA President Yuriy Miroshnykov told journalists. ???The prices are based on the monopoly position of the fuel suppliers."