Cheap flights from St. Augustine to Harlingen, TX (UST - HRL)
UST — HRL
Jul 7 — Jul 141
1 adult, Economy
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Best time to book a flight from St. Augustine to Harlingen
Have a flexible travel schedule? Discover the best time to fly to Harlingen from St. Augustine with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Augustine to Harlingen
What is the cheapest month to book a flight from St. Augustine to Harlingen, Texas?
Currently, April is the cheapest month in which you can book a flight from St. Augustine to Harlingen, Texas (average of $267). Flying from St. Augustine to Harlingen, Texas in June is currently the most expensive (average of $390). 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.
What is the cheapest time of day to fly from UST to HRL?
Find hourly flight availability from St. Augustine to Harlingen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 2, 2025.
When flying from St. Augustine to Harlingen, Texas, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 47% versus a flight at noon.