[adrianmonk]

Do they? I certainly don't behave that way. Fares are definitely something I factor in heavily, but a $10 difference isn't something I consider significant.

Long before that point, I start looking at other factors like departure and arrival times and whether I like the airline.

For example, I just did a quick search, and for $25 more total round trip, I can get nonstop flights both ways. I didn't specify nonstop as a search filter (since there are few nonstop flights between these two cities), but now that I know it's only $25 more, I'd pick that.

[anthonypasq]

Most people dont fly often enough to have brand preferences about airlines.