$608 Cheap Flights from San Sebastian (EAS) to Denver (DEN)

View $608 flight on Mon, Dec 1, 2025Opens in a new window

Popular airlines from San Sebastian (EAS) to Denver Intl. Airport (DEN)

Cheap Flights from San Sebastian to Denver (EAS-DEN)

Prices were available within the past 7 days and start at $608 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from San Sebastian Airport (EAS) to Denver Intl. Airport (DEN) cost?
Get a cheap one-way flight from $608 or cheap return flight from San Sebastian Airport (EAS) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from San Sebastian Airport (EAS) to Denver Intl. Airport (DEN)?
is the least expensive month to fly from EAS to DEN. Traveling outside of peak seasons is often the key to scoring lower fares.
What is the cheapest airline that flies from San Sebastian Airport (EAS) to Denver Intl. Airport (DEN)?
To find the cheapest airline flying from EAS to DEN, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from San Sebastian Airport (EAS) to Denver Intl. Airport (DEN)?
There are no daily nonstop flights available from San Sebastian Airport (EAS) to Denver Intl. Airport (DEN). But you can book 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 EAS to DEN?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change based on various factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Sebastian Airport (EAS) to Denver Intl. Airport (DEN)?
Choose a flight from San Sebastian Airport (EAS) to Denver Intl. Airport (DEN) that takes off before 3 PM to reduce the risk of cancellations and delays. 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.
Is it cheaper to buy a plane ticket from San Sebastian Airport (EAS) to Denver Intl. Airport (DEN) last-minute?
Last-minute bookings from EAS to DEN are generally more expensive. For the lowest prices, start searching for flights well in advance. That said, if you can play around with your travel dates, it's possible to land a cheap ticket right before you leave.
Is it cheaper to book an EAS to DEN flight and hotel package?
Opting for an EAS to DEN flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Choose from our extensive range of hotels and then add car rentals, activities and flights 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 San Sebastian Airport (EAS) to Denver Intl. Airport (DEN)?
If you booked your EAS to DEN flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. 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.

Travel information

Travel information

Origin airport
San Sebastian
Destination airport
Denver Intl.
Distance
4947 mi

Book with confidence

Book with confidence

San Sebastian to Denver Flights

The cheapest times to fly from San Sebastian to Denver

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

 

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

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

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 San Sebastian to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $608 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 San Sebastian to Denver 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 San Sebastian to Denver 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.

 

San Sebastian to Denver Flights

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*Available to One Key members.