Official Google Blog: Flying high with Google SMS
Ever spent 15 minutes on the phone shouting answers at the automated airline attendant while rushing to the airport? How cool would it be to get real-time flight info just by sending a quick text message? Well, now you can, using Google SMS.
Simply text your flight number to 466453 (‘GOOGLE’ on most mobile devices), and the status information will be sent back to you. Or text a specific airline name, and Google will send back the main phone number to call.