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Cheap flights from Denver to San Sebastian from $836

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to San Sebastian departing on 12/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

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Multiple Airlines Logo
12:30 pm - 1:00 pmDEN-EAS
16h 30m2 stops
Multiple Airlines Logo
9:30 pm - 3:30 pmEAS-DEN
26h 00m2 stops
$836Multiple Airlines
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Fri, Dec 5 - Sat, Dec 13
Iberia Logo
5:25 pm - 8:50 pmDEN-EAS
19h 25m2 stops
Iberia Logo
9:30 pm - 10:27 pmEAS-DEN
32h 57m2 stops
$978Iberia
Find Deal
Fri, Jan 9 - Wed, Jul 8
Multiple Airlines Logo
11:15 am - 1:30 pmDEN-EAS
18h 15m2 stops
Multiple Airlines Logo
5:55 pm - 1:45 pmEAS-DEN
27h 50m3 stops
$1,264Multiple Airlines
Find Deal
Fri, Jan 9 - Wed, Jul 8
American Airlines Logo
7:22 am - 1:00 pmDEN-EAS
21h 38m2 stops
American Airlines Logo
1:40 pm - 10:22 pmEAS-DEN
40h 42m2 stops
$1,591American Airlines
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Fri, Nov 7 - Tue, Nov 11
American Airlines Logo
5:25 pm - 8:40 amDEN-EAS
31h 15m2 stops
American Airlines Logo
1:40 pm - 10:22 pmEAS-DEN
40h 42m2 stops
$1,603American Airlines
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Fri, Nov 7 - Tue, Nov 11
Multiple Airlines Logo
7:20 pm - 1:30 pmDEN-EAS
34h 10m3 stops
Multiple Airlines Logo
5:55 pm - 1:45 pmEAS-DEN
27h 50m3 stops
$1,755Multiple Airlines
Find Deal
Fri, Jan 9 - Wed, Jul 8
Multiple Airlines Logo
7:20 pm - 1:30 pmDEN-EAS
34h 10m3 stops
Multiple Airlines Logo
5:55 pm - 1:45 pmEAS-DEN
27h 50m3 stops
$1,764Multiple Airlines
Find Deal
Fri, Jan 9 - Wed, Jul 8
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
$1,769American Airlines
Find Deal
Thu, Nov 6 - Tue, Nov 11

American Airlines flights from Denver to San Sebastian

Our best American Airlines deals on Denver to San Sebastian flight tickets
American Airlines
Nov 7
DEN7:22 amDenver Intl
21h 38m
2 stops
EAS1:00 pmSan Sebastián
Nov 11
EAS1:40 pmSan Sebastián
40h 42m
2 stops
DEN10:22 pmDenver Intl
$1,591
Find similar
American Airlines
Nov 7
DEN5:25 pmDenver Intl
31h 15m
2 stops
EAS8:40 amSan Sebastián
Nov 11
EAS1:40 pmSan Sebastián
40h 42m
2 stops
DEN10:22 pmDenver Intl
$1,603
Find similar
American Airlines
Nov 6
DEN12:17 amDenver Intl
28h 43m
2 stops
EAS1:00 pmSan Sebastián
Nov 11
EAS1:40 pmSan Sebastián
40h 42m
2 stops
DEN10:22 pmDenver Intl
$1,769
Find similar

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 October 26, 2025.
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

Fri 12/5

12:30 pm-1:00 pm

2 stops16h 30m

San Sebastián

Sat 12/13

9:30 pm-3:30 pm

2 stops26h 00m

$836

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 1/9

5:25 pm-8:50 pm

2 stops19h 25m

San Sebastián

Wed 7/8

9:30 pm-10:27 pm

2 stops32h 57m

$978

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 1/9

11:15 am-1:30 pm

2 stops18h 15m

San Sebastián

Wed 7/8

5:55 pm-1:45 pm

3 stops27h 50m

$1,264

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 11/7

7:22 am-1:00 pm

2 stops21h 38m

San Sebastián

Tue 11/11

1:40 pm-10:22 pm

2 stops40h 42m

$1,591

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 11/7

5:25 pm-8:40 am

2 stops31h 15m

San Sebastián

Tue 11/11

1:40 pm-10:22 pm

2 stops40h 42m

$1,603

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 1/9

7:20 pm-1:30 pm

3 stops34h 10m

San Sebastián

Wed 7/8

5:55 pm-1:45 pm

3 stops27h 50m

$1,755

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 1/9

7:20 pm-1:30 pm

3 stops34h 10m

San Sebastián

Wed 7/8

5:55 pm-1:45 pm

3 stops27h 50m

$1,764

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Thu 11/6

12:17 am-1:00 pm

2 stops28h 43m

San Sebastián

Tue 11/11

1:40 pm-10:22 pm

2 stops40h 42m

$1,769

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to San Sebastian from

How to get the cheapest flight ticket from Denver to San Sebastian

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to San Sebastian?

On average, the least expensive day to fly to San Sebastian from Denver is on a Saturday. momondo users have found tickets for Saturday departures for as low as $1,183. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Denver to San Sebastian for around $2,865.

What is the cheapest time of day to depart on your flight to San Sebastian?

Flying to San Sebastian from Denver in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,157 when looking at flights departing in the afternoon. Flights to San Sebastian are more costly in the morning, with an average ticket price of $1,572. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Direct flights

None
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 16h 30m, 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 many operators does momondo search for flights from Denver Intl Airport to San Sebastián Airport?

  • 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.

  • What is the most popular airline from Denver to San Sebastian?

Best airlines flying from Denver to San Sebastian

Compare and see reviews for airlines that fly from Denver to San Sebastian with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $873Free CancellationRating
7.0
3,000 reviews
Search Iberia flights

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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