Travelling 3 weeks after surgery - Need advice

Hi, I'm scheduled to have my surgery on 3/4/10 and will be travelling by plane to Chicago from Virginia three weeks after surgery.  My doc. has already approved the trip, granted I get up and walk around and do leg exercises to prevent clots.  My question is, what food will I be able to eat at the airport?  For example, what if my flight is delayed for hours and I am stuck at the airport and get hungry.  Someone suggested I bring baby food along in my carry-on, but I wonder would I be allowed to bring that since I'm not travelling with a baby and I know that the airlines are strict about what you can and can't bring on a flight.  Any advice would be greatly appreciated.
Thanks a lot,
Heather
P.S. I posted this on the Realize board, too, but figured I'd get more feedback if I posted this on several boards.  Thanks!

Forgot to mention that I'm having the Realize band surgery.

Protein would be a good thing.  The vials always travel well.

There are so many restrictions these days as to what we can take with us on flights -- my suggestion is to talk to your surgeon's nutritionist and see what he/she suggests based on the time frame after surgery, taking into account the restriction on liquids, etc.  I wish I could be more help -- there are just so many variables because of all of the security restrictions. 

Congrats on the upcoming surgery!  :)

Cindy is right - there are just so many restrictions that  my suggestion would be protein powder and a note from your doctor staing that you need to carry these things. Your nutritionist should also be able to help you on this...

Jackie