Speak with an agent over the phone : Sometimes, while traveling, there are chances that you may come across certain doubts or inconveniences. For that, there is an option to contact Allegiant Air over the phone. Staff members at the airline are very polite and quick to answer the phones and stuck at how do I speak to a live person at Allegiant Air?.You may call Allegiant phone number at 1 (702) 505-8888 (which is available to call 24/7) and speak with an agent. The steps to connect your call are as follows. Please ensure you are dialing So get all information here the correct phone number mentioned above. Listen to the automated IVR carefully and follow the instructions by pressing the correct keys.Your call might get a hold-up time; please wait for your call to get through.Once you are on call with an agent, speak to them about your queries/issues.