Cheap flights from St. Augustine to Harlingen, TX (UST - HRL)
UST — HRL
Nov 16 — Nov 231
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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.Cheap flight deals from St. Augustine to Harlingen
Discover tips and strategies to find the most affordable flight options for your journey from St. Augustine (UST) to Harlingen (HRL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 17, 2025.
Most accurate provider | Expedia 2 stars |
|---|---|
Most trusted provider | Expedia 3 stars |
- Most accurate provider: When it comes to deals on St. Augustine-Harlingen, Texas flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on St. Augustine-Harlingen, Texas flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from St. Augustine-Harlingen, Texas flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Augustine-Harlingen, Texas flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Augustine-Harlingen, Texas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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, October is the cheapest month in which you can book a flight from St. Augustine to Harlingen, Texas (average of $212). Flying from St. Augustine to Harlingen, Texas in July is currently the most expensive (average of $404). 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 October 17, 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 46% versus a flight at noon.