Just to save others the work on future occassions, this is what I came up with today:

Air Transports

Continental Airlines
Phone: 1-800-575-3335
Website: http://www.continental.com/travel/policies/animals/default.asp
E-mail: petsafe@coair.com
They require 24-hour notice to ship an animal. No temperature restrictions, though a good rule of thumb is, not above 85 Fahrenheit or below 20 Fahrenheit.
Price ranges (depending on weight of animal and crate combined):
10lbs. – 50lbs. $189
51lbs. – 70lbs. $239
71lbs. – 100lbs. $299

Northwest Airlines
Phone: 1-800-692-2746
Website: http://www.nwa.com/services/shipping/cargo/products/liveanship.html
Price range (depending on weight of animal and crate combined):
$195 - $269
Temperature requirements:
Not above 85 Fahrenheit or below 10 Fahrenheit.

Delta Airlines
Phone: 1-888-736-3738
Website: http://www.delta.com/travel/special_services/pet_travel/index.jsp
Price range (depending on weight of animal and crate combined):
No range provided.
Temperature requirements:
Not above 85 Fahrenheit or below 45 Fahrenheit.

American Airlines
Phone: 1-800-227-4622
Website: http://www.aa.com/content/travelInformation/specialAssistance/travelingWithPets.jhtml#Pets%20Traveling%20As%20Ch ecked%20Baggage
Price range (depending on weight of animal and crate combined):
10lbs. – 50lbs. $172
51lbs. – 100lbs. $396
Anything over 100lbs not accepted
Largest crate dimension 40x27x30
Temperature requirements:
Not above 85 Fahrenheit or below 20 Fahrenheit.

Thank you Sarah - very good information!

Sarah, this is AWESOME. Thank you for doing that. :)

Sarah, United has stuff too but I can't seem to find the link when I was looking for Stacy first and then for Neo.

Northwest prices change depending on if you are sending VIP or as Cargo...some airports only allow you to fly VIP since they don't have a cargo area, and that is based solely on weight.

Cargo is based on crate size, where flying and a little bit on weight. They have a downloadable database with all of that nonsense on it.

Thanks for posting this.

Thanks Sarah. This is good information to have.

Sarah, excellent info, I stickied it for you.

Great info.

United Info:
http://www.united.com/page/middlepage/0,6823,1047,00.html?jumpLink=%2Fpets