Just got back from holiday with DCs. I flew with Ryanair and thought I would sum up my expenses.
The flights cost £400; they deliberately keep you in a queue so you have to pay for their shitty food in the plane which cost £50. I paid for priority boarding which I did not use because it took so long to get DCs to gate therefore £30; cost of checking in baggage for 3 people £70. Also, they fly from a really awkward airport which I would not normally use - the cost of travel was also quite sizeable.
I heard people moaning and I always thought how bad can it be? But it was really bad. The flight was stressful (trying to get DCs to aeroplane in time) and I ended up feeling sorry for the air staff (after speaking to them discovered that they had to buy their own uniforms).
I have never felt so fleeced in all my life.