What US cities offer the cheapest flights to Guadalajara, Mx?

I need to fly to Guadalajara for as little as possible. I have the option of flying to any US city for free and then taking a connecting flight into GDL. What US city offers the cheapest flights into GDL?

Public Comments

1. Look for it in American Eagle (from Dallas-Fortworth), Continental Airlines (from Houston), and Aeroméxico or Mexicana (from LA or Ontario airport). I guess the cheapest will be American Eagle.
2. i agree that american eagle is cheap from DFW, maybe Houston...but probably the same price. you could also try LA. those would be my top 3 picks.
3. Continental sometimes has some goos prices from Houston. Also from Houston I like Aviacsa.
4. America West Express From Phoenix Summary (1 Passenger) Base Fare $200.00 Taxes and Fees $102.10 Grand Total $302.10 This is my help from Washington, D.C. USA.