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Cheap flights from Harlingen, TX to St. Augustine (HRL - UST)

HRL — UST
Nov 17 — Nov 241
Mon 11/17
Mon 11/24
1 adult, Economy
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Best time to book a flight from Harlingen to St. Augustine

Have a flexible travel schedule? Discover the best time to fly to St. Augustine from Harlingen 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 Harlingen to St. Augustine

What is the cheapest month to book a flight from Harlingen, Texas to St. Augustine?

Currently, May is the cheapest month in which you can book a flight from Harlingen, Texas to St. Augustine (average of $80). Flying from Harlingen, Texas to St. Augustine in December is currently the most expensive (average of $245). 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 HRL to UST?

Find hourly flight availability from Harlingen to St. Augustine. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 18, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 52% on flights from Harlingen, Texas to St. Augustine by exploring options for tickets at noon.

Related info for your journey

Find useful and relevant information for your journey from Harlingen to St. Augustine. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Harlingen to St. Augustine that include hotel bookings?

    Yes. In addition to deals on Harlingen to St. Augustine flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Harlingen to St. Augustine?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Harlingen to St. Augustine.

  • Can I find deals for business class flights from Harlingen to St. Augustine?

    Yes. Cheapflights offers flight deals from Harlingen to St. Augustine by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Harlingen, Texas to St. Augustine?

    Currently, May is the cheapest month in which you can book a flight from Harlingen, Texas to St. Augustine (average of $80). Flying from Harlingen, Texas to St. Augustine in December is currently the most expensive (average of $245). 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.

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Traveling to a place near St. Augustine?

Book flights to St. Augustine if you plan to visit one of these locations
Vilano Beach

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