Level 70 Dailies - Make More Gold Doing World of Warcraft Daily Quests
Dailies are not available until you reach the level 70 areas, i.e. Netherwing, Ogri'la, Quel'danas, and Skettis. There are also fishing and cooking dailies, and even PvP dailies, so you can mix and match as you like. In order to get access to any of them, you'll first need to complete a quest chain.
If you're looking to earn enough gold to get your epic flying mount, then I would recommend starting to do dailies in Sunwell right away. The quests are easy and quick and you should get 11g for each one finished.
The Skyguard and Ogri'la quests are really good too, but require a flying mount to get to them. There are also a ton of Shattered Sun Offensive quests that should keep you from getting bored for quite awhile. They also won't take too long to earn you the cash you need. Once you are exalted, it also becomes a lot easier to pick and choose the types of quests you want to do.
While there are 25 quests you can do in a day, there is no need to do that many if you don't have the time or the inclination. Just focus on the quests that are quick and fun for you to do and that offer the most gold for your time spend working on them.
You can keep it from getting boring by changing it up every day. One day spend some time doing the cooking dailies and another day work on the dailies in Skettis. There are also heroic dailies that you can do. So basically it should never get boring and you'll earn plenty of gold while having some fun.
If you haven't reached level 70 yet, and still want to make some gold, my list of some of the best WoW gold farming spots should help you out. Or get a copy of Luke Brown's WoW Gold Secrets Guide. He has tons of strategies for making more gold at every level and for each character class.

