Departing on a Sunday is a good option for securing a great price. You can expect to save up to 76% when planning your travel around this day of the week.
Flights from St. Louis to Harlingen, Texas lean towards being more expensive in December. Prices are generally better when you fly from St. Louis to Harlingen, Texas in October, with the cheapest ticket starting at $169.
Unlike at noon, when flights are generally more expensive, you can save up to 41% on flights from St. Louis to Harlingen, Texas by exploring options for tickets in the morning.