DEN - EAS

$1,018 Find Cheap Flights from Denver to San Sebastian

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to San Sebastian departing on 11/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to San Sebastian

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to San Sebastian, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to San Sebastian, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,018
American Airlines
Fri 11/7Tue 11/11
DEN - EAS • 2 stops
Cheapest one-way
Multiple Airlines
Thu 10/16
DEN - EAS • multi-stop
Top airlines
American Airlines
Cheapest • from $1,018 (round-trip)
Iberia
Best reviews • 7.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Sebastian!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to San Sebastian that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to San Sebastian

Fri, Nov 7 - Tue, Nov 11
American Airlines Logo
12:55 pm - 8:50 pmDEN-EAS
23h 55m2 stops
American Airlines Logo
1:40 pm - 10:22 pmEAS-DEN
40h 42m2 stops
$1,018American Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
American Airlines Logo
12:55 pm - 8:50 pmDEN-EAS
23h 55m2 stops
American Airlines Logo
1:40 pm - 10:22 pmEAS-DEN
40h 42m2 stops
$1,019American Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
American Airlines Logo
12:55 pm - 8:50 pmDEN-EAS
23h 55m2 stops
American Airlines Logo
1:40 pm - 10:22 pmEAS-DEN
40h 42m2 stops
$1,073American Airlines
Find Deal
Thu, Nov 6 - Tue, Nov 11
American Airlines Logo
12:17 am - 1:00 pmDEN-EAS
28h 43m2 stops
American Airlines Logo
1:40 pm - 10:22 pmEAS-DEN
40h 42m2 stops
$1,556American Airlines
Find Deal
Thu, Nov 6 - Tue, Nov 11
American Airlines Logo
12:17 am - 1:00 pmDEN-EAS
28h 43m2 stops
American Airlines Logo
1:40 pm - 10:22 pmEAS-DEN
40h 42m2 stops
$1,557American Airlines
Find Deal
Mon, Jan 5 - Fri, Jan 9
Multiple Airlines Logo
5:25 pm - 8:40 amDEN-EAS
31h 15m2 stops
Multiple Airlines Logo
9:30 pm - 2:14 pmEAS-DEN
24h 44m2 stops
$1,603Multiple Airlines
Find Deal
Fri, Nov 14 - Sun, Nov 16
Iberia Logo
12:26 pm - 1:00 pmDEN-EAS
16h 34m2 stops
Iberia Logo
1:40 pm - 10:22 pmEAS-DEN
40h 42m2 stops
$3,060Iberia
Find Deal
Booking Insights

KAYAK's insights & trends for Denver to San Sebastian flights

Get data-powered insights and trends into flights from Denver to San Sebastian to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Denver to San Sebastian?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Denver to San Sebastian were found on American Airlines ($1,018) and Iberia ($3,060).

Which airlines fly non-stop between Denver and San Sebastian?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Denver to San Sebastian.

There is just one airline that flies from Denver to San Sebastian direct and that is Iberia. The best round-trip deal found from Iberia for the route is $873.

Good to know

Cheapest flight$1,018
Flight from Denver to San Sebastian

When to book flights from Denver to San Sebastian

Are your dates flexible? Find out the best times to travel from Denver to San Sebastian based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to San Sebastian

  • What is the cheapest flight from Denver to San Sebastian?

    In the last 3 days, the lowest price for a flight from Denver to San Sebastian was $1,018 for a round-trip ticket.

  • Do I need a passport to fly between Denver and San Sebastian?

    Yes, you’ll need a passport to travel to San Sebastian from Denver.

  • Which airports will I be using when flying from Denver to San Sebastian?

    On your way to San Sebastian, you’ll fly out from Denver Intl. You’ll be landing at San Sebastián.

  • Which aircraft models fly most regularly from Denver to San Sebastian?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Denver to San Sebastian?

    oneworld is the only airline alliance operating flights between Denver and San Sebastian.

  • How does KAYAK find such low prices on flights from Denver to San Sebastian?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to San Sebastian.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to San Sebastian?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Sebastian from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to San Sebastian?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Sebastian with an airline and back to Denver with another airline. Booking your flights between Denver and EAS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to San Sebastian?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Sebastian from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Denver to San Sebastian

 
See real verified KAYAK customer reviews for airlines flying from Denver to San Sebastian. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to San Sebastian? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
IberiaOverall score based on 2992 reviews
6.6Entertainment
6.3Food
7.1Boarding
6.7Comfort
7.7Crew
Airline reviews

It was a good flight overall. Nothing to add. Keep it up!

10.0 ExcellentDavid Jaafaru, Oct 2025ORY - BIO
Read more Iberia reviews

It was a good flight overall. Nothing to add. Keep it up!

Excellent. Thanks to United Star Alliance, since economy was overbooked, I’m grateful to have been upgraded to Business Class.

Good plane, excellent food, crew and entertainment. Seats in business could use an upgrade

Delayed. Mismanagement of gate lines. Passengers arguing with eachother as a result of lack of organization by airline. Avoid this airline.

Disaster. Downgraded. Zero apology. No effort or coordination between gate and crew. Awful seat blocked by door emergency slide box. Iberia is a mess. App never works. Avoid this airline.

We departed late but made up most of the time in flight. Our ticket was pure economy, so it wasn’t anything fancy; however, I heard that we arrived in Madrid at the exact same time that First Class passengers arrived! Overall, our experience was similar to what we had on other American Airlines transatlantic flights - good value at a reasonable price. We were even able to get our carry-on baggage onto the plane without needing to gate check it.

Flight was OK. Waiting for luggage in Madrid for 55 minutes, unacceptable

Transportation from gate to airplane was poor we stayed in hot bus for 20 minute no vantilation

Because the plane was delayed from Madrid to LAX, we missed our connecting flight to Malaga. Iberia offered to book us a hotel room but I needed to be in Malaga that evening. I ended up buying train tickets to Malaga from Madrid. I also feel Iberia should compensate me for the cost of the train tickets because they didn't meet their travel obligation.

The crew were friendly and helpful. Iberia lost our luggage on arrival, Friday and we didn't get it until Sunday at 10:00 p.m. local Malaga time. I also paid $382.80 for seat assignments but two out out of the four were not together. Iberia mentioned that it was because the plane was delayed in Madrid before our flight began in LAX. They should compensate us half of my payment.

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

Information on your arrival and departure airports

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