Here's a time-lapse video of last month's Albuquerque International Balloon Fiesta. I love watching them lift off and fly away in speeded-up fashion like this . . . they remind me of nothing so much as multi-colored bumblebees! I recommend watching it in full-screen mode.
Note how the winds change at altitude. From about 1m. 25s. you can see how balloons fly in one direction higher up, then drop down to go the other way in the countervailing winds at lower heights.