When we purchased our airline tickets online with American Airlines, it said the first bag was free to Mexico... great! (we thought).
When we flew American to LAX, we were charged a fee for our bag. The lady of the ticket counter (even before we knew we'd be charged a fee) said we could try to get a refund from aa.com/refunds. She then told us we would be charged a fee for the fight for our bags and said it was because we had a domestic flight to LAX where we had an overnight layover.
This morning we got to the counter at Alaska Airlines and were charged $20 per bag. The Alaskan Airlines ticket person said that bags to Mexico were free to Guadalajara and Mexico City.
So far we have been charged $45 per bag for our two bags that we were not expecting. We will see what happens when we fly home on Alaska Airlines connecting to American Airlines with no overnight layover at LAX.
When we purchased our tickets on as.com, I believe it said that the first checked bag to Mexico was free. I will also let this TA Forum know how things go with AA.com when I return and try to get a refund for our bag fee.
(Please note that I did not use the 's' word in the title of this post describing how we are now out $90 extra so far after having done so much business with American Airlines and their partner for this trip, Alaska Airlines.). (-;