Tripit has saved me so much time (and helped my marriage too) by solving this problem. I just started using it this summer when I was doing a lot of international travel.

Now, I just forward the email to tripit and I have an item in my calendar (that is shared with my wife) that has just the relevant info (flight time, number, conf #, etc) so I can see it any time and so can she.

No more looking at those awful emails (which I just archive as soon as I forward it).

I'm a big fan of the Google Now cards that pop-up with live flight details and information like when I have to leave in order to get to check-in on time with current travel conditions. It seems to be getting this straight from my gmail account.

... and that's why i use tripit