USA Discount airlines

So many airlines make it hard to locate the airlines which are discounted and no frills.Here is a small list of some of Cheap airlines where you can get discount airfares:

• USA3000 - Visit www.usa3000.com for more info.Toll free number of customer care:1-877-USA3000 (1.877.872.3000)
  

• Virgin America - visit www.virginamerica.com (1.877.359.8474
  
• AirTran Airways - Operates out of AL - www.airtran.com - 678-254-7999
  
• Gulfstream International Air
• Frontier Airlines - Denvar and MX are its main operation areas
• JetBlue Airways
• Southwest Airlines
• Allegiant Air - LV based and serve many small cities
• Spirit Airlines
• Sun Country Airlines