Experienced delays going out on 17th june and coming back 24th june 2013 from birmingham to corfu. Booked flights through tour operator On The Beach. They booked flights with olympic holidays who contracted for us to fly with small planet, a lithuanian airline company (though I have never heard of them) but we ended up on a plane by another company called enter air which is polish - equally unknown! Going out the flight at 13.55 was moved 2 days beforehand by 3 hours but when we got to the airport it was delayed again by a further hour departing at 18.00. Coming back the flight at 20.15 was moved again prior to the day of departure by 4 hours and took off another hour later at 23.30. On this flight we were told we would have to stop at milan for more fuel (1.5 hour journey) because the plane was too big (a Boeing 737 400 seater) and too full to take off on a short runway in corfu with a tank full of fuel. The refueling took one hour. When we booked the flights they were good day flights for which we were happy to pay full price - not cheap - but they were turned into nightmare flights. olympic holidays told me that small planet often do other runs in the day to help out other companies so can't always meet their pre-scheduled commitments!!. Never got told why suddenly enter air were our airline carriers. I have now taken legal advice and will be claiming compensation under EU regulations relating to delayed flights and searching the small print for breach of contract. (There is a standard letter on moneysavingsexpert.com to claim compensation). I am beginning to wonder if these airlines ever deliver to their advertised times and feel olympic holidays must be aware of these constant delays/changes as there have been lots of complaints on Trip Adviser .