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Cheap flights from Denver to San Sebastian from $948

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 9/1. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Denver to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
6:40 pm - 8:40 am
DEN
-
EAS
30h 00m
2 stops
Iberia Logo
9:30 pm - 4:30 pm
EAS
-
DEN
51h 00m
2 stops
$948Iberia
Tue, Sep 1 - Sun, Sep 20
Iberia Logo
6:40 pm - 8:20 am
DEN
-
EAS
29h 40m
2 stops
Iberia Logo
9:30 pm - 4:25 pm
EAS
-
DEN
50h 55m
2 stops
$967Iberia
Fri, Sep 25 - Sun, Oct 4
Multiple Airlines Logo
4:40 pm - 8:20 am
DEN
-
EAS
31h 40m
3 stops
Multiple Airlines Logo
8:55 am - 11:20 am
EAS
-
DEN
34h 25m
2 stops
$985Multiple Airlines
Mon, Aug 31 - Sun, Sep 20
Multiple Airlines Logo
4:40 pm - 8:20 am
DEN
-
EAS
31h 40m
3 stops
Multiple Airlines Logo
5:55 pm - 7:00 pm
EAS
-
DEN
33h 05m
3 stops
$1,008Multiple Airlines
Fri, Sep 25 - Sun, Oct 4
Multiple Airlines Logo
6:40 pm - 8:40 am
DEN
-
EAS
30h 00m
2 stops
Multiple Airlines Logo
9:30 pm - 4:30 pm
EAS
-
DEN
51h 00m
2 stops
$1,025Multiple Airlines
Mon, Aug 31 - Sun, Sep 20
Iberia Logo
6:40 pm - 8:40 am
DEN
-
EAS
30h 00m
2 stops
Iberia Logo
5:55 pm - 4:30 pm
EAS
-
DEN
54h 35m
2 stops
$1,037Iberia
Mon, Aug 31 - Sun, Sep 20
Iberia Logo
6:40 pm - 8:40 am
DEN
-
EAS
30h 00m
2 stops
Iberia Logo
9:30 pm - 4:30 pm
EAS
-
DEN
51h 00m
2 stops
$1,048Iberia
Mon, Aug 31 - Sun, Sep 20
Multiple Airlines Logo
4:40 pm - 8:20 am
DEN
-
EAS
31h 40m
3 stops
Multiple Airlines Logo
8:55 am - 11:20 am
EAS
-
DEN
34h 25m
2 stops
$1,055Multiple Airlines
Mon, Aug 31 - Sat, Sep 19
British Airways Logo
12:17 pm - 1:00 pm
DEN
-
EAS
16h 43m
2 stops
British Airways Logo
9:30 pm - 11:56 pm
EAS
-
DEN
34h 26m
2 stops
$1,070British Airways
Mon, Nov 16 - Thu, Nov 19
American Airlines Logo
6:15 am - 8:40 am
DEN
-
EAS
18h 25m
2 stops
American Airlines Logo
9:20 am - 11:03 pm
EAS
-
DEN
21h 43m
2 stops
$1,071American Airlines
Mon, Aug 31 - Sat, Sep 19

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Iberia flights from Denver to San Sebastian

Our best Iberia deals on Denver to San Sebastian flight tickets
Iberia
Sep 1
DEN6:40 pmDenver Intl
30h 00m
2 stops
EAS8:40 amSan Sebastián
Sep 20
EAS9:30 pmSan Sebastián
51h 00m
2 stops
DEN4:30 pmDenver Intl
$948
Iberia
Sep 25
DEN6:40 pmDenver Intl
29h 40m
2 stops
EAS8:20 amSan Sebastián
Oct 4
EAS9:30 pmSan Sebastián
50h 55m
2 stops
DEN4:25 pmDenver Intl
$967
Iberia
Aug 31
DEN6:40 pmDenver Intl
30h 00m
2 stops
EAS8:40 amSan Sebastián
Sep 20
EAS5:55 pmSan Sebastián
54h 35m
2 stops
DEN4:30 pmDenver Intl
$1,037

British Airways flights from Denver to San Sebastian

Our best British Airways deals on Denver to San Sebastian flight tickets
British Airways
Nov 16
DEN12:17 pmDenver Intl
16h 43m
2 stops
EAS1:00 pmSan Sebastián
Nov 19
EAS9:30 pmSan Sebastián
34h 26m
2 stops
DEN11:56 pmDenver Intl
$1,070
British Airways
Sep 1
DEN6:40 pmDenver Intl
42h 10m
2 stops
EAS8:50 pmSan Sebastián
Sep 20
EAS4:55 pmSan Sebastián
31h 35m
1 stop
DEN4:30 pmDenver Intl
$1,475
British Airways
Aug 31
DEN6:40 pmDenver Intl
42h 10m
2 stops
EAS8:50 pmSan Sebastián
Sep 20
EAS4:55 pmSan Sebastián
31h 35m
1 stop
DEN4:30 pmDenver Intl
$1,629

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 July 16, 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

Cheapest round-trip

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Tue 9/1

6:40 pm-8:40 am

2 stops30h 00m

San Sebastián

Sun 9/20

9:30 pm-4:30 pm

2 stops51h 00m

$948

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 9/25

6:40 pm-8:20 am

2 stops29h 40m

San Sebastián

Sun 10/4

9:30 pm-4:25 pm

2 stops50h 55m

$967

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Mon 8/31

4:40 pm-8:20 am

3 stops31h 40m

San Sebastián

Sun 9/20

8:55 am-11:20 am

2 stops34h 25m

$985

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 9/25

4:40 pm-8:20 am

3 stops31h 40m

San Sebastián

Sun 10/4

5:55 pm-7:00 pm

3 stops33h 05m

$1,008

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Mon 8/31

6:40 pm-8:40 am

2 stops30h 00m

San Sebastián

Sun 9/20

9:30 pm-4:30 pm

2 stops51h 00m

$1,025

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Mon 8/31

6:40 pm-8:40 am

2 stops30h 00m

San Sebastián

Sun 9/20

5:55 pm-4:30 pm

2 stops54h 35m

$1,037

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Mon 8/31

6:40 pm-8:40 am

2 stops30h 00m

San Sebastián

Sun 9/20

9:30 pm-4:30 pm

2 stops51h 00m

$1,048

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Mon 8/31

4:40 pm-8:20 am

3 stops31h 40m

San Sebastián

Sat 9/19

8:55 am-11:20 am

2 stops34h 25m

$1,055

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Mon 11/16

12:17 pm-1:00 pm

2 stops16h 43m

San Sebastián

Thu 11/19

9:30 pm-11:56 pm

2 stops34h 26m

$1,070
Quickest round-trip

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Mon 8/31

6:15 am-8:40 am

2 stops18h 25m

San Sebastián

Sat 9/19

9:20 am-11:03 pm

2 stops21h 43m

$1,071

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

16h 43m

Direct flights

None
The fastest flight from Denver to San Sebastian takes 16h 43m
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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Frequently asked questions about flying from Denver to San Sebastian

  • 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 43m, 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.

Frequently asked questions about flying from Denver to San Sebastian

  • 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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