Go through your results for flights to Matamoros in Mexico with Netflights.
Flexible on dates? Conducting your search by month allows you to compare prices to Matamoros throughout the year. Accommodation prices will also be higher at this time of year.
Or broaden your search by looking at other airports in Mexico.
You can also broaden your search by looking at more than one departure airport. Have a look around – you might be able to save by flying from a different airport or city.