HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Sebastian

$441+ Cheap flights from Denver (DEN) to San Sebastian (EAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — EAS
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to San Sebastian with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Denver to San Sebastian

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to San Sebastian (EAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,167
(Gurufare)

One-way from

$441
(Kiwi.com)
Provider with most accurate pricing for Denver Intl-San Sebastián flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-San Sebastián flights.
Search Deals
From Denver Intl to San Sebastián
Search Deals
One-way flight from Denver Intl to San Sebastián
Search Deals

Find flight deals from Denver to San Sebastian

Cheapest flights from Denver to San Sebastian
Explore the most affordable flight options available from Denver to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Gurufare deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/183:49 pmDEN - EAS
2 stops32h 51mIberia
Fri 5/309:20 amEAS - DEN
2 stops22h 13mIberia
Deal found 3/27$1,167
This American Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1812:19 pmDEN - EAS
2 stops16h 41mAmerican Airlines
Fri 5/309:20 amEAS - DEN
2 stops22h 13mAmerican Airlines
Deal found 3/26$1,170

Cheapflights Fare Finder

Customize your flight search to find flights from Denver to San Sebastian that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2025.
Use the filters below to find and compare flights from Denver to San Sebastian that are best for you.

Fly from

Denver

Fly to

San Sebastian

Route

Depart

Return

Price

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Sun 5/18

3:49 pm-8:40 am

2 stops32h 51m

San Sebastián

Fri 5/30

9:20 am-11:33 pm

2 stops22h 13m

$1,167

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Sun 5/18

12:19 pm-1:00 pm

2 stops16h 41m

San Sebastián

Fri 5/30

9:20 am-11:33 pm

2 stops22h 13m

$1,170

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Mon 7/14

12:34 am-8:30 am

3 stops47h 56m

$441

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Compare providers for flights from Denver to San Sebastian

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to San Sebastian in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-San Sebastian flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-San Sebastian flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-San Sebastian flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-San Sebastian flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-San Sebastian flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to San Sebastian

What is the cheapest time of day to fly from DEN to EAS?

Find hourly flight availability from Denver to San Sebastian. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

One of the essential ways to save on airfare from Denver to San Sebastian is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 27% on airfare.

Reviews of airlines servicing San Sebastian

Get insights into the airlines that provide service to San Sebastian. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Sebastian. Reviews last updated March 28, 2025.
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Boarding

7.5

Entertainment

6.9

Comfort

7.2

Crew

8.0

Food

6.5

Reviews

1 / 20
6.0
Good

sheila,Mar 2025

DFW - MSP

We were delayed for 3 hours with no real reason or offer for compensation
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Boarding

7.5

Entertainment

6.9

Comfort

7.2

Crew

8.0

Food

6.5

Reviews

1 / 20
6.0
Good

sheila,Mar 2025

DFW - MSP

We were delayed for 3 hours with no real reason or offer for compensation
Iberia
7.0
Good
2,651 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Boarding

7.5

Entertainment

6.9

Comfort

7.2

Crew

8.0

Food

6.5

Reviews

1 / 20
6.0
Good

sheila,Mar 2025

DFW - MSP

We were delayed for 3 hours with no real reason or offer for compensation

Related info for your journey

Find useful and relevant information for your journey from Denver to San Sebastian. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Denver to San Sebastian round-trip?

    Currently priced at $1,167, Iberia will fly you from Denver to San Sebastian and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on American Airlines for as low as $1,170.

  • Can I find deals for flights from Denver to San Sebastian that include hotel bookings?

    Yes. In addition to deals on Denver to San Sebastian flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to San Sebastian?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to San Sebastian.

  • Can I find deals for business class flights from Denver to San Sebastian?

    Yes. Cheapflights offers flight deals from Denver to San Sebastian by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Denver to San Sebastian

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Bilbao flights

Top 2 airlines flying from Denver to San Sebastian

Discover the top 2 airlines that operate flights from Denver to San Sebastian. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$638Average$1,586FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$815Average$1,861FlexibilityNo cancel feeOn-time71%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.