$498 Cheap Flights from Jacksonville (JAX) to San Sebastian (EAS)

View $498 flight on Thu, Nov 27, 2025Opens in a new window

Popular airlines from Jacksonville International Airport (JAX) to San Sebastian (EAS)

Cheap Flights from Jacksonville to San Sebastian (JAX-EAS)

Prices were available within the past 7 days and start at $498 for one-way flights and $631 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Nov 10 - Sat, Nov 22
JAX
Jacksonville
EAS
San Sebastián
$631 Roundtrip, found 18 hours ago
$631
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Mon, Nov 10 from Jacksonville to San Sebastián, returning Sat, Nov 22, priced at $631 found 18 hours ago
American Airlines
Thu, Nov 27 - Thu, Dec 11
JAX
Jacksonville
EAS
San Sebastián
$637 Roundtrip, found 1 day ago
$637
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Nov 27 from Jacksonville to San Sebastián, returning Thu, Dec 11, priced at $637 found 1 day ago
American Airlines
Mon, Nov 10 - Sat, Nov 22
JAX
Jacksonville
EAS
San Sebastián
$637 Roundtrip, found 18 hours ago
$637
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Mon, Nov 10 from Jacksonville to San Sebastián, returning Sat, Nov 22, priced at $637 found 18 hours ago
American Airlines
Mon, Nov 10 - Sat, Nov 22
JAX
Jacksonville
EAS
San Sebastián
$640 Roundtrip, found 18 hours ago
$640
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Mon, Nov 10 from Jacksonville to San Sebastián, returning Sat, Nov 22, priced at $640 found 18 hours ago
American Airlines
Mon, Nov 10 - Sat, Nov 22
JAX
Jacksonville
EAS
San Sebastián
$642 Roundtrip, found 18 hours ago
$642
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Mon, Nov 10 from Jacksonville to San Sebastián, returning Sat, Nov 22, priced at $642 found 18 hours ago
American Airlines
Mon, Nov 10 - Sat, Nov 22
JAX
Jacksonville
EAS
San Sebastián
$643 Roundtrip, found 18 hours ago
$643
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Mon, Nov 10 from Jacksonville to San Sebastián, returning Sat, Nov 22, priced at $643 found 18 hours ago
American Airlines
Thu, Nov 27 - Thu, Dec 11
JAX
Jacksonville
EAS
San Sebastián
$646 Roundtrip, found 1 day ago
$646
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Nov 27 from Jacksonville to San Sebastián, returning Thu, Dec 11, priced at $646 found 1 day ago
American Airlines
Mon, Nov 10 - Sat, Nov 22
JAX
Jacksonville
EAS
San Sebastián
$646 Roundtrip, found 18 hours ago
$646
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Mon, Nov 10 from Jacksonville to San Sebastián, returning Sat, Nov 22, priced at $646 found 18 hours ago
Iberia
Mon, Nov 3 - Wed, Nov 12
JAX
Jacksonville
EAS
San Sebastián
$687 Roundtrip, found 4 days ago
$687
Roundtrip
found 4 days ago
Select Iberia flight, departing Mon, Nov 3 from Jacksonville to San Sebastián, returning Wed, Nov 12, priced at $687 found 4 days ago
British Airways
Tue, Nov 11 - Tue, Nov 18
JAX
Jacksonville
EAS
San Sebastián
$709 Roundtrip, found 6 days ago
$709
Roundtrip
found 6 days ago
Select British Airways flight, departing Tue, Nov 11 from Jacksonville to San Sebastián, returning Tue, Nov 18, priced at $709 found 6 days ago
Flights from Jacksonville (JAX) to San Sebastian (EAS)
Origin airport
Jacksonville Intl.
Destination airport
San Sebastian
Airlines serving
American Airlines, Iberia
Roundtrip price
$631
Distance
4333 mi

Jacksonville to San Sebastian Flights

The cheapest times to fly from Jacksonville to San Sebastian

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 Jacksonville to San Sebastian are during the month of November. You can find some of the cheapest flights from Jacksonville to San Sebastian with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Jacksonville to San Sebastian

Sunday is one of the best days to book for cheap flights from Jacksonville to San Sebastian: 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 Jacksonville to San Sebastian

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 Jacksonville to San Sebastian in 2025. You can also book with separate airlines for your outbound and return journeys, from $498 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 Jacksonville to San Sebastian 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 Jacksonville to San Sebastian 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

How much does a flight from Jacksonville Intl. Airport (JAX) to San Sebastian Airport (EAS) cost?
Grab a cheap one-way flight from $498 or cheap return flight from $631 from Jacksonville Intl. Airport (JAX) to San Sebastian Airport (EAS) 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 Jacksonville Intl. Airport (JAX) to San Sebastian Airport (EAS)?
The cheapest month to fly from JAX to EAS is November, when demand is low. Off-peak months are usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Jacksonville Intl. Airport (JAX) to San Sebastian Airport (EAS)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from JAX to EAS. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Jacksonville Intl. Airport (JAX) to San Sebastian Airport (EAS)?
You'll need to hop on a flight with a layover when traveling from Jacksonville Intl. Airport (JAX) to San Sebastian Airport (EAS). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from JAX to EAS?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Jacksonville Intl. Airport (JAX) to San Sebastian Airport (EAS)?
Choose a flight from Jacksonville Intl. Airport (JAX) to San Sebastian Airport (EAS) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this time 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.
Is it cheaper to buy a plane ticket from Jacksonville Intl. Airport (JAX) to San Sebastian Airport (EAS) last-minute?
Holding off until just before your departure to book a ticket from JAX to EAS generally means paying more. While you may find some last-minute deals, they aren't always guaranteed. Keep your travel plans flexible for the best chance of getting a bargain.
Is it cheaper to book a JAX to EAS flight and hotel package?
Compared with arranging flights and hotels separately, booking a JAX to EAS flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the hassle out of planning your trip. Just secure your flights and choose from our wide range of hotels, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Jacksonville Intl. Airport (JAX) to San Sebastian Airport (EAS)?
If you booked your JAX to EAS flight within 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 after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

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*Available to One Key members.