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St. Augustine

Cheap flights from St. Louis to St. Augustine (STL - UST)

STL — UST
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Best time to book a flight from St. Louis to St. Augustine

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

What is the cheapest time of day to fly from STL to UST?

Find hourly flight availability from St. Louis 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 July 30, 2025.

It’s optimal to fly from St. Louis to St. Augustine at noon. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from St. Louis to St. Augustine?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to St. Augustine. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their St. Louis to St. Augustine flight should consider departing on Monday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from St. Louis 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 St. Louis to St. Augustine that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis 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.

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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