Cheap Flights from Denver (DEN) to St. Augustine (UST)

Popular airlines from Denver Intl. Airport (DEN) to St. Augustine, FL (UST-Northeast Florida Regional)

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Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Northeast Florida Regional Airport (UST) cost?
Secure a cheap one-way flight or cheap return flight from Denver Intl. Airport (DEN) to Northeast Florida Regional Airport (UST) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to Northeast Florida Regional Airport (UST)?
Traveling in may help you find better deals, as it's the cheapest month for flights between DEN and UST. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Northeast Florida Regional Airport (UST)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest DEN to UST flight.
How many flights per day from Denver Intl. Airport (DEN) to Northeast Florida Regional Airport (UST)?
There are no daily nonstop flights from Denver Intl. Airport (DEN) to Northeast Florida Regional Airport (UST). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from DEN to UST?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on various factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Denver Intl. Airport (DEN) to Northeast Florida Regional Airport (UST)?
Choose a flight from Denver Intl. Airport (DEN) to Northeast Florida Regional Airport (UST) that leaves before 3 PM to reduce the risk of cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for St. Augustine from Denver Intl. Airport (DEN)?
Browse your flight options from Denver Intl. Airport (DEN) to Jacksonville Intl. Airport (JAX). This is the only airport in St. Augustine you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to Northeast Florida Regional Airport (UST) last-minute?
Booking your ticket from DEN to UST shortly before your trip is generally more expensive. However, if you're flexible with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a DEN to UST flight and hotel package?
You'll generally save money by securing a DEN to UST flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've chosen your preferred accommodations and flights, you can add extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Northeast Florida Regional Airport (UST)?
In most cases, you're able to cancel or reschedule your DEN to UST flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you need further details, visit our Customer Service portal.

Travel information

Origin airport
Denver Intl.
Destination airport
Northeast Florida Regional
Distance
1481 mi

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Denver to St. Augustine Flights

The cheapest times to fly from Denver to St. Augustine

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to St. Augustine are during the month of . You can find some of the cheapest flights from Denver to St. Augustine with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to St. Augustine

Sunday is one of the best days to book for cheap flights from Denver to St. Augustine: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to St. Augustine

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to St. Augustine in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to St. Augustine flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to St. Augustine airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Denver to St. Augustine Flights

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*Available to One Key members.