Airline Toll-Free Numbers -

 Air France -  800-237-2747
Air India  - 800-223-7776
British Airways -  800-247-9297
Cathay Pacific Airways -  800-233-2742
Continental Airlines  - 800-525-0280
Delta Air Lines  - 800-221-1212
Emirates Air  - 800-777-3999
Etihad Air - 888 8 ETIHAD
Jet Airways - 877-835-9538
JetBlue Airways - 800-538-2583
KLM  - 800-374-7747
Kuwait Airways - 800-458-9248
Lufthansa - 800-645-3880
Malaysia Airlines - 800-552-9264
Qatar Air - 877-777-2827
Singapore Airlines - 800-742-3333
Thai Air - 800-426-5204
United Airlines - 800-241-6522
US Airways - 800-428-4322 

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Few helpful website before you fly - 

List of prohibited items for Travellers -
http://www.tsa.gov/travelers/airtravel/prohibited/permitted-prohibited-items.shtm

List of airlines for seating and plane configuration - 
http://www.seatguru.com/
 
List of other Airline Toll-Free Numbers and Websites -
http://www.tollfreeairline.com