I have flown twice since Tuesday, once out of NYC. Security is noticeably tighter, and the general atmosphere at airports reflects a concern for safety and precaution. Unless you feel so terribly worried about your flight that it will mitigate against the overall enjoyment of your trip, I see no reason not to go. As our President, Mayor, and others have suggested, we need to resume our regular lives. To do otherwise acknowledges that the terrorists have won.