In 2018, Halkina began the season at the 2018 Grand Prix Moscow finishing 5th in the all-around and qualified to all the apparatus finals. She won gold with ribbon and bronze in hoop and ball with a 4th place in clubs. After skipping a few international events due to a minor injury, Halkina returned in competition at the 2018 Pesaro World Cup finishing 5th in the all-around, she qualified in 3 apparatus finals placing 7th in hoop, ball and 4th in ribbon. On April 27–29, Halkina competed at the 2018 Baku World Cup where she finished 10th in the all-around after a series of mistakes in all her routines. She won a bronze medal in the hoop final behind Russia's Maria Sergeeva. On May 4–6, she finished 7th in all-around at the 2018 Guadalajara World Challenge Cup. She qualified in 3 apparatus finals finishing 6th in ball and 7th in clubs and ribbon. On May 16–17, Halkina competed at the 2018 Holon Grand Prix finishing just out of the medals in the all-around by placing 4th behind Ekaterina Selezneva. She qualified for all apparatus finals and won gold in ball and bronze in hoop. She finished 5th in clubs and 8th in ribbon. In June at the 2018 European Championships Halkina produced what probably was the best, most consistent competition of her life. Hitting one routine after the other she came close to the silver medal but had to settle for bronze medal in the all-around.