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Cheap flights from Denver to San Sebastian from $584

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to San Sebastian departing on 5/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Denver to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
7:36 am - 1:00 pm
DEN
-
EAS
21h 24m
2 stops
Iberia Logo
9:30 pm - 7:55 pm
EAS
-
DEN
30h 25m
2 stops
$709Iberia
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
4:40 pm - 8:35 am
DEN
-
EAS
31h 55m
3 stops
Multiple Airlines Logo
5:55 pm - 6:15 pm
EAS
-
DEN
32h 20m
3 stops
$1,216Multiple Airlines
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
9:40 am - 5:20 pm
DEN
-
EAS
23h 40m
2 stops
Multiple Airlines Logo
5:55 pm - 6:15 pm
EAS
-
DEN
32h 20m
3 stops
$1,451Multiple Airlines
Tue, May 5 - Tue, May 12

momondo 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, momondo users made 832,500 searches. Data last updated February 13, 2026.
Use the filters below to find and compare flights from Denver to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Tue 5/5

7:36 am-1:00 pm

2 stops21h 24m

San Sebastián

Tue 5/12

9:30 pm-7:55 pm

2 stops30h 25m

$709

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Tue 5/5

4:40 pm-8:35 am

3 stops31h 55m

San Sebastián

Tue 5/12

5:55 pm-6:15 pm

3 stops32h 20m

$1,216

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Tue 5/5

9:40 am-5:20 pm

2 stops23h 40m

San Sebastián

Tue 5/12

5:55 pm-6:15 pm

3 stops32h 20m

$1,451

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Tue 5/5

6:40 pm-8:40 am

2 stops30h 00m

$584

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Denver to San Sebastian

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to San Sebastian according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to San Sebastian (DEN to EAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to San Sebastian

Fastest flight time

26h 22m

Direct flights

None
The fastest flight from Denver to San Sebastian takes 26h 22m
There are no direct flights from Denver to San Sebastian. There are no popular flight routes from Denver to San Sebastian.
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  • How far is Denver Intl to San Sebastián by plane?

    A flight from Denver Intl to San Sebastián will travel around 4956.4 mi. Flights usually cover this in 26h 22m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Denver Intl Airport to San Sebastián Airport?

    Prices for flights from Denver Intl Airport to San Sebastián Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Denver Intl Airport to San Sebastián Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to San Sebastián Airport.

  • What documentation or ID do you need to fly to San Sebastián Airport?

    The required travel and health documents for your San Sebastián Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Sebastián Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from Denver to San Sebastian?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Denver from San Sebastian. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Denver to San Sebastian with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near San Sebastian?

Book flights to San Sebastian if you plan to visit one of these locations
Irun
Hondarribia

Why use momondo?

Why should I use momondo to find a flight deal from Denver to San Sebastian?

It is quick and easy to find Denver to San Sebastian flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Sebastian that suits you.

Can I find flights from Denver to San Sebastian with flexible booking policies on momondo?

Flights from Denver to San Sebastian with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Denver to San Sebastian?

momondo provides multiple filters to help you find the best flight to San Sebastian from Denver. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Denver to San Sebastian right now. Can momondo alert me if prices change?

Price alerts on flights to San Sebastian from Denver are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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