Cheap Flights from Washington (IAD) to St. Augustine (UST)

Popular airlines from Washington Dulles Intl. Airport (IAD) to St. Augustine, FL (UST-Northeast Florida Regional)

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Northeast Florida Regional Airport (UST) cost?
Lock in a cheap one-way flight or cheap return flight from Washington Dulles Intl. Airport (IAD) to Northeast Florida Regional Airport (UST) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Northeast Florida Regional Airport (UST)?
is the cheapest month to fly from IAD to UST. Planning your trip for the off-season is often the key to finding a great deal.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Northeast Florida Regional Airport (UST)?
To find the cheapest airline flying from IAD to UST, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Northeast Florida Regional Airport (UST)?
There aren't any daily nonstop flights from Washington Dulles Intl. Airport (IAD) to Northeast Florida Regional Airport (UST). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from IAD to UST?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Northeast Florida Regional Airport (UST)?
To touch down at Northeast Florida Regional Airport (UST) without delays, choose a flight that takes off from Washington Dulles Intl. Airport (IAD) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Washington Dulles Intl. Airport (IAD)?
Explore your flight options from Washington Dulles Intl. Airport (IAD) to Jacksonville Intl. Airport (JAX). This is the only airport in St. Augustine you can touch down at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Northeast Florida Regional Airport (UST) last-minute?
Booking your plane ticket from IAD to UST just before your getaway is typically more expensive. However, if there's some wiggle room with your travel times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book an IAD to UST flight and hotel package?
You'll typically save money by booking an IAD 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. After choosing your preferred accommodations and flights, consider adding extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Northeast Florida Regional Airport (UST)?
It's usually possible to cancel or reschedule your IAD to UST flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Northeast Florida Regional
Distance
659 mi

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Washington to St. Augustine Flights

The cheapest times to fly from Washington 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 Washington to St. Augustine are during the month of . You can find some of the cheapest flights from Washington to St. Augustine with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Washington 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 Washington 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 Washington to St. Augustine in 2025. 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 Washington 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 Washington 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.

 

Washington to St. Augustine Flights

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*Available to One Key members.