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Key Largo

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

UST — MIA
Sep 16 — Sep 231
Wed 9/16
Wed 9/23
1 adult, Economy
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Find flight deals from St. Augustine to Key Largo

Keep the following information in mind while searching for St. Augustine to Key Largo flight deals. Data was last updated August 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars
Provider with most accurate pricing for St. Augustine Northeast Florida Regional-Miami flight deals.
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Provider most trusted by Cheapflights users for St. Augustine Northeast Florida Regional-Miami flights.
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Related info for your journey

Find useful and relevant information for your journey from St. Augustine to Key Largo. 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 from for flights from St. Augustine to Key Largo?

    St. Augustine Northeast Florida Regional (UST) is the airport you will fly out of if you book a flight from St. Augustine to Key Largo. You should not have trouble finding flights to Key Largo from Northeast Florida Regional; the airport handles an average of 0 outbound flights to Key Largo per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the St. Augustine airport to Key Largo. It is only a 4.7 mi journey to Northeast Florida Regional (UST) from St. Augustine’s city center.

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

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

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

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

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

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

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