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

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

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Frequently asked questions

How much does a flight from Northeast Florida Regional Airport (UST) to Washington Dulles Intl. Airport (IAD) cost?
Lock in a cheap one-way flight or cheap return flight from Northeast Florida Regional Airport (UST) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Northeast Florida Regional Airport (UST) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from UST to IAD is , when demand is low. Off-peak season is generally when you'll find cheap fares for travel between these airports.
Which airlines fly direct from Northeast Florida Regional Airport (UST) to Washington Dulles Intl. Airport (IAD)?
You can't fly direct from St. Augustine, FL (UST-Northeast Florida Regional) to Washington Dulles Intl. Airport (IAD). However, you can seamlessly travel to Washington without any layovers by leaving from Jacksonville Intl. Airport (JAX).
What is the cheapest airline that flies from Northeast Florida Regional Airport (UST) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline that'll fly you from UST to IAD, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Northeast Florida Regional Airport (UST) to Washington Dulles Intl. Airport (IAD)?
Nonstop flights from Northeast Florida Regional Airport (UST) to Washington Dulles Intl. Airport (IAD) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from UST to IAD?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending on the season, carrier 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 Northeast Florida Regional Airport (UST) to Washington Dulles Intl. Airport (IAD)?
To avoid possible delays on the Northeast Florida Regional Airport (UST) to Washington Dulles Intl. Airport (IAD) route, aim to travel before 3 PM. Later departures are 22% more likely to be canceled.**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.
Is it cheaper to buy a plane ticket from Northeast Florida Regional Airport (UST) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute bookings from UST to IAD are generally more expensive. To lock in the cheapest rates, start looking for flights well in advance. That said, if your travel plans are flexible, you may find a cheap fare right before your trip.
Is it cheaper to book an UST to IAD flight and hotel package?
Securing an UST to IAD flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our wide range of hotels and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Northeast Florida Regional Airport (UST) to Washington Dulles Intl. Airport (IAD)?
If you reserved your UST to IAD flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

Travel information

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

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St. Augustine to Washington Flights

The cheapest times to fly from St. Augustine to Washington

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

 

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

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

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 St. Augustine to Washington 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 St. Augustine to Washington 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 St. Augustine to Washington 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.

 

St. Augustine to Washington Flights

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