Cheap Flights from Seattle (SEA) to St. Augustine (UST)

Popular airlines from Seattle-Tacoma International Airport (SEA) to St. Augustine, FL (UST-Northeast Florida Regional)

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Flights from Seattle (SEA) to St. Augustine (UST)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Northeast Florida Regional
Distance
2477 mi

Seattle to St. Augustine Flights

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

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

Sunday is one of the best days to book for cheap flights from Seattle 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 Seattle 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 Seattle 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 Seattle 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 Seattle 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.

Frequently asked questions

Is it cheaper to buy a plane ticket from Sea-Tac Airport to UST last minute?
When it’s time to book your flights, being organized pays off. While it may be possible to pick up a deal on a Sea-Tac Airport to Northeast Florida Regional Airport flight at the last minute, tickets usually don’t get cheaper as the date of departure nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to book a domestic flight is between 28 – 35 days ahead. For international journeys it’s between three and four months.
What airports do you fly into for St. Augustine from Seattle?
With Northeast Florida Regional Airport (UST), Jacksonville Intl. Airport (JAX) and Daytona Beach Intl. Airport (DAB) to pick from, flying from Seattle to St. Augustine is a piece of cake. The city’s main terminal, Northeast Florida Regional Airport (UST), is around 5 mi northwest of the center. As well as the price of tickets, consider factors like train or bus options from the airport and the distance to your hotel when deciding where to touch down. Get your St. Augustine trip off to a terrific start by checking out Flagler College and Ponce de Leon’s Fountain of Youth Archaeological Park.
Can I change the date of my flight from SEA to Northeast Florida Regional Airport?
We know life happens and plans change, so Expedia is here to help make amending your journey as easy as possible. To start, access your Seattle - Tacoma Intl. Airport (SEA) to Northeast Florida Regional Airport (UST) itinerary through the Expedia Trips portal and read the fare rules and conditions about what changes are allowed. If you booked your plane ticket in the last 24 hours, some carriers will let you cancel without charge and book new flights. If you booked your fare more than 24 hours ago, contact us through our Customer Service portal to see how we can assist.

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