Currently we have found that the most reasonable airfare can be found on Spirit Air and Delta Airlines.  

Delta will offer a group discount if 10 people or more travel together.

Feel free to contact Delta at:

Group Sales: 1-800-532-4777

International sales: 1-800-241-4141

Flights to and from Cancun are offered nonstop if desired.

Spirit Airlines also offers a group discount when 10 people or more travel together.

Group Sales: 1-877-663-4841

It is an international flight and a Passport is required to travel to Mexico.