Whenever I book my Summer holidays I always shop around in order to find the best deal that I possibly can. I know all the tricks in the book. 
I use the budget airlines such as EasyJet or Ryanair. I weigh my luggage at home, then I doublt check the weight of my luggage and make sure it doesn't exceed the baggage allowance. I do the same before my flight home.

I also pack my own lunch to take on the flight, as airlines tend to charge a fortune for in-flight refreshments. These aren't the only ways that I save money when I'm on holiday though. I believe that saving money starts as soon as you have the idea of going on holiday.
I meticulously research my preferred destinations to establish the currency exchange rate, the price of food and drink when I'm there and many other things such as the cost of taxis etc. While I'm on the subject of taxis I never ever opt for airport transfers unless they are included for free within the holiday. Fortunately with companies such as Easyjet holidays they quite often thrown the airport transfer in for free. Otherwise in 99% of cases it is far cheaper to arrange your own bus or taxi when you get to the airport.

When you're actually booking your holiday be sure to search online for an easyJet holidays voucher code. It's always worth seeing if there's any saving to be made. Whether it's a small cash credit on your booking, free airport transfers or just a good last minute deal, you can't go wrong by having a look for the promo codes. It literally takes a few seconds and is highly likely to save some of your hard earned cash.

The more cash you manage to save then the more times you can afford to go on holiday, which is reason enough in itself I think :)