Japan Airlines and Russia’s S7 Airlines have agreed to further expand their codeshare cooperation by adding four new Russia-domestic destinations to JAL’s network.

Reservations for the new flights will open tomorrow.

Routes will include departures from Moscow’s Domodedovo airport to Kaliningrad, Omsk, Tyumen, and Novosibirsk.

JAL’s codeshare routes in Russia will be increased from the current 15 to 19 under the terms of the deal.

“With deeper cooperation with S7, JAL will continue to enhance its network in Russia and provide customers, whether they are business or leisure travellers, with more convenience and enjoyable experience on every journey,” the airline said in a statement.

Both JAL and S7 are members of the oneworld airline alliance.