They had to brave the cold with temperatures dropping to -5 in the Finnish capital, where Michael O’Neill’s side fell to a 4-0 defeat with Joel Pohjanpalo, Daniel Hakans, Teemu Pukki and Robin Lod condemning the visitors to a seventh loss in nine matches.
Here are the best photos.
9. Northern Ireland team
Northern Ireland team line up before Friday night’s UEFA Euro 2024 qualifier against Finland at the Olympic Stadium in Helsinki Photo: William Cherry/Presseye
10. McCausland on debut
Northern Ireland’s Ross McCausland in action during his first appearance for the senior team Photo: William Cherry/Presseye