The difference between driving an SUV in towns and taking a flight is that there aren't many more fuel-efficient ways to cross the pacific.
Agree with the sentiment, though. We all want to make improvements. The strongest way to cut waste probably is less around making our current lifestyles cleaner (electric cars, easier to grow food), and more around making our lifestyles themselves cleaner (walkable cities, stop eating as much, or as much meat).
EDIT: Yeah, maybe I shouldn't ever cross the Pacific. It is a luxury in itself.