Flight cost: £39.48 return.
Accommodation cost: £135.49 for three nights.
Food: 
Everything else: 
Total: 

Flight details: I flew from Manchester with Easyjet for £39.48 return. I flew out on 24 May 2018, and back on 27 May 2018. 
Accommodation details: Copenhagen isn’t a particularly cheap city. I stayed at the Steelhouse hostel, which has fantastic facilities. It’s in a great location too. I paid the equivalent of £135.49 for three nights.