Iceland Air- layovers in Iceland question

[anna7602]

Do you need to book the free stayover in Iceland when you book the tickets? I already bought r/t tickets to Paris on Iceland Air, but am now thinking I may want some days in Iceland on the way back. Can I still do this or will they charge me some additional fee? 

[sunshinedaydreams]

I'd probably call the airline and check. I've done the layover twice, but I've always booked it when I booked my tickets. IME Iceland Air is one of the more accommodating airlines, so hopefully they'll let you change it for free.