Currently, September is the cheapest month in which you can book a flight from St. Augustine to McAllen (average of $281). Flying from St. Augustine to McAllen in December is currently the most expensive (average of $416). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s optimal to fly from St. Augustine to McAllen in the evening. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight at noon.