A couple of weeks in an airport car park is going to add about £90 to the cost of your trip (based on BAA’s quote for 2 weeks at Heathrow Terminal 4 in November). But it’s in a long stay car park. And that means it’s going to be away from the terminal. So you’ll have to wait up to 8 minutes for a bus ride that takes about 7 minutes to reach the terminal. Doesn’t sound too bad, does it? Now add your ski gear, luggage and, of course, the kids. It’s not looking quite such a good deal is it? And that’s the point. You can go to great lengths to save money, but in the end, is it worth the hassle?