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St. Augustine

Cheap flights from O'Hare Intl (ORD) to St. Augustine (UST)

ORD — UST
Aug 7 — Aug 141
Thu 8/7
Thu 8/14
1 adult, Economy
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Cheap flight deals from O'Hare Intl to St. Augustine

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to St. Augustine (UST). 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 August 2, 2025.

Popular in

February

Cheapest in

December

Average price

$415
Highest demand for flights based on searches. 11% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Best time to book a flight from O'Hare Intl to St. Augustine

Have a flexible travel schedule? Discover the best time to fly to St. Augustine from O'Hare Intl 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 Chicago O'Hare Intl Airport to St. Augustine

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

Find hourly flight availability from O'Hare Intl 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 2, 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago O'Hare Intl Airport to St. Augustine in the afternoon. If you’re flexible enough to do this you can expect to save up to 46% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to St. Augustine?

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

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to St. Augustine flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday mornings 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 O'Hare Intl 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 Chicago O'Hare Intl?

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

  • Can I find deals for flights from O'Hare Intl to St. Augustine that include hotel bookings?

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

  • How can I find direct flights from O'Hare Intl to St. Augustine?

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

  • Can I find deals for business class flights from O'Hare Intl to St. Augustine?

    Yes. Cheapflights offers flight deals from O'Hare Intl 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.

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Traveling to a place near St. Augustine?

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Vilano Beach

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