Actually, regardless, if the delay is due to something that under the airline's control (i.e. mechanical problems), then the passenger isn't owed anything if the delay is less than 2 hrs, I believe a phone call and maybe a meal voucher if it's 2-4 hrs, and if it's over 4+ hours or if you are required to spend the night in a city other than your home, then the airline must pay for the cost of a hotel room, a phone call home, your meals, etc. But usually you can get a lot more if it is the airline's fault. However, if it is due to weather (both cancellations and delays), then the passenger isn't entitled to anything at all. Though if you are an elite member with the airline or on a full fare ticket, strings can usually be pulled.