Un Lugar SensaZIHonal

I'm not sure that's correct. I could book today from Pittsburgh with the same dates over the holidays for Cabo, Puerto Vallarta or Cancun for 800 - 900 and choose between United, Delta or American. The Mexican government says on the whole, tourism and international arrivals are up nicely year over year. ZIH is a small market, more like Huatulco where there are fewer airline choices and jacked up airfares.

Codeshare is a partner airline. So starting on Delta and connecting with AeroMexico and not having to re-ticket or re-check bags is codeshare.

Starting and ending with the same carrier is not codeshare.