This was the worst flight experience I have ever had (and I have had the worst of the worst throughout the world).
Our flight was a non-stop flight from San Francisco to Barcelona. I think it was 9 hours or so.
-international flight with no free checked baggage
-international flight with no complementary food or beverage (including water and snacks - we had to buy a small bottle of water to survive our 9 hour+ flight for something like 5 bucks) - you also can't buy food on the flight, you apparently had to pre-order it, which I did not get the chance to do as I booked through a third party
-terrible and chaotic boarding process
-least comfortable seats I have ever been in on a flight
-very rude staff