What are the best websites for getting cheap plane tickets?
Unfortunately, Spirit Airlines do not fly between Copenhagen and England; becoming an “affiliate” in the YTB pyramid, to get ‘chip’ tickets, costs $495; and Expedia and Kayak don’t show the low-cost airlines on this route. I flew Danish low-cost airline Sterling between CPH and LGW in December very cheaply; in the next 30 days, they have some seats at £30 one-way, all taxes and fees included, with advance purchase. Easyjet are also on London Luton to CPH; some as cheap as £27 one-way in May. Air Berlin are on Stansted-CPH, but they’re not coming up cheap currently (plus they connect in Germany, whereas Easyjet and Sterling are nonstop). I also checked BA and SAS for sales, but they are not as cheap as Easyjet and Sterling. I would choose based on which London airport is easiest for you–Luton (Easyjet), or Gatwick (Sterling).