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St. Augustine

Cheap flights from Key Largo, FL to St. Augustine (UST)

MIA — UST
Aug 8 — Aug 151
Fri 8/8
Fri 8/15
1 adult, Economy
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Cheapflights Insights

Everything you need to know about your flight from Key Largo to St. Augustine

What is the cheapest time of day to fly from KE9 to UST?

Find hourly flight availability from Key Largo 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 August 3, 2025.

When flying from Key Largo to St. Augustine, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

Travelers seeking maximum savings on their Key Largo to St. Augustine flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday at noon 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 Key Largo to St. Augustine. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Augustine from Key Largo?

    Most people fly into St. Augustine Northeast Florida Regional (UST) if they book a flight to St. Augustine from Key Largo. On average, Northeast Florida Regional has 0 inbound flights from Key Largo per day from 0 airlines. St. Augustine Northeast Florida Regional is conveniently located just 4.7 mi from St. Augustine’s city center.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Key Largo 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.

See more FAQs

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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