As a matter of interest, as I am considering visiting Corfu for Easter (23rd April), and using the Air Berlin/LTU route, UK to Corfu via Dusseldorf (and not Athens), I got the following prices, including all taxes. This is for a visit to Corfu 20th - 27th April.
Flying out of Stanstead on the 19th April (means an overnight sleep at Dusseldorf), but maybe worth it.
19 Apr - Stn to Dus - Dep 2030 Arr 2245 - £6.00 plus taxes
20 Apr - Dus to Cfu - Dep 0605 Arr 0935 - £99.00 plus taxes
27 Apr - Cfu to Dus - Dep 1020 Arr 1155 - £105.00 plus taxes
27 Apr - Dus to Stn - Dep 1505 Arr 1520 - £8.00 plus taxes
Totol Cost including taxes etc = £270 Return per person.
This is via the main Dusseldorf Airport and not Weeze. Would that be considered a good price for an out of season holiday break, taking into consideration one would need accommodation on top of this.
Using this route for Christmas works out expensive.