Between 22 May and 4 June, the nine countries tested their skills and effectiveness in a realistic threat environment.
"It is interesting seeing how the Swedish work compared to us. They have been really helpful in hosting us and everyone seems to be working really well together," said Corporal Tania Barr, Logistics Mover from RAF Lossiemouth.
The RAF contributed 155 personnel from 14 RAF stations to support its seven aircraft on the exercise.
On 27 May, British and American personnel were welcomed to Sweden with a visit to Luleå-Kallax air base from Her Royal Highness The Crown Princess of Sweden, who met with personnel and took a tour of the British, Swedish and American fast jets.
"ACE 19 is an opportunity for us to train with our allies to improve our interoperability and ensure we’re capable of contributing to the collective security of Europe and NATO," said the UK Wing Commander Matt D’Aubyn.
Arctic Challenge Exercise is hosted between the air forces of Sweden, Finland and Norway and this year was led by the Swedish Air Force.