Russian Energy Minister Alexander Novak and his Ukrainian counterpart Vladimir Demchyshyn will meet at 5 pm (1500 GMT) on Friday, “with the firm objective to finalize the so-called winter package for the winter period 2015/16”, the commission said in a statement.
Novak added that the Russian government should approve the size of a gas price discount for Ukraine before the end of the month.
“We are now taking a decision on imposing additional sanctions against Russian companies”.
Russian Federation and Ukraine have been locked in a standoff over gas since a pro-Western uprising ousted ex-president Viktor Yanukovych and took control of Kyiv past year.
“Only when and if Aeroflot receives official notification from the aviation authorities of Ukraine that flights have been cancelled will the company inform passengers and explain the rules on ticket reimbursement”, it said in a statement.
The meeting, convened by commission Vice President Maros Sefcovic, will also include representatives of Russian energy giant Gazprom and Ukrainian supplier Naftogaz.
Aeroflot, Transaero and other Russian airlines to destinations in the country from October 25 as part of new sanctions against the neighbor that the government accuses of aiding separatists. “The government is insisting on the immediate implementation of all sanctions defined by the decision of the Security Council”, Yatseniuk said.