HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Augustine

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

ORD — UST
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl to St. Augustine with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars
Provider with most accurate pricing for Chicago O'Hare Intl-St. Augustine Northeast Florida Regional flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago O'Hare Intl-St. Augustine Northeast Florida Regional flights.
Search Deals

Compare providers for flights from O'Hare Intl to St. Augustine

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to St. Augustine in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-St. Augustine flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago O'Hare Intl Airport-St. Augustine flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-St. Augustine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-St. Augustine flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-St. Augustine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 month to book a flight from Chicago O'Hare Intl Airport to St. Augustine?

Currently, September is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to St. Augustine (average of $77). Flying from Chicago O'Hare Intl Airport to St. Augustine in March is currently the most expensive (average of $116). 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 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 October 30, 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 45% 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.

  • What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to St. Augustine?

    Currently, September is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to St. Augustine (average of $77). Flying from Chicago O'Hare Intl Airport to St. Augustine in March is currently the most expensive (average of $116). 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.

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for O'Hare Intl to St. Augustine

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Orlando flights
O'Hare Intl to Miami flights
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to Tampa flights
O'Hare Intl to Fort Myers flights
Midway to Miami flights
O'Hare Intl to West Palm Beach flights
Midway to Orlando flights
Midway to Tampa flights
O'Hare Intl to Sarasota flights
Midway to Fort Lauderdale flights
Midway to Fort Myers flights
O'Hare Intl to Jacksonville flights
O'Hare Intl to Key West flights
O'Hare Intl to Pensacola flights
Midway to West Palm Beach flights
Midway to Sarasota flights
O'Hare Intl to Panama City flights
Rockford to Orlando Sanford Intl flights
Midway to Key West flights
Midway to Jacksonville flights
Rockford to St Petersburg flights
O'Hare Intl to Daytona Beach flights
Midway to Pensacola flights
Rockford to Punta Gorda flights
O'Hare Intl to Melbourne flights
Midway to Panama City flights
O'Hare Intl to St Petersburg flights
O'Hare Intl to Valparaiso flights
Midway to Daytona Beach flights
Midway to Melbourne flights
Midway to Orlando Sanford Intl flights
Midway to Valparaiso flights
O'Hare Intl to Tallahassee flights
O'Hare Intl to Punta Gorda flights
Midway to Punta Gorda flights
O'Hare Intl to Gainesville flights
Midway to Tallahassee flights
O'Hare Intl to Orlando Sanford Intl flights
Midway to Gainesville flights
O'Hare Intl to Valdosta flights
Midway to Valdosta flights
O'Hare Intl to Destin flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.