You can make turns with ease while flying.
Benefit: Once each round, you can turn up to 180 degrees as a free action without making a Fly skill check. This free turn does not consume any additional movement.
Normal: A flying creature can turn up to 90 degrees by making a DC 15 Fly skill check and expending 5 feet of movement. A flying creature can turn up to 180 degrees by making a DC 20 Fly skill check and expending 10 feet of movement.