What airlines fly to San Sebastian?

United Airlines, Lufthansa and Iberia are the top three most popular airlines that fly to San Sebastian from Colorado according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to San Sebastian. Keep in mind that there are 3 different airlines that fly to San Sebastian on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Colorado to San Sebastián Airport?

Prices for flights from Colorado to San Sebastián Airport were last updated today.

How many operators does momondo search for flights from Colorado to San Sebastián Airport?

There is 1 operator available for flights from Colorado to San Sebastián Airport as of November 2025.

How old do you have to be to fly from Colorado to San Sebastián Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to San Sebastián Airport.

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

The travel and health documents you'll need for your trip to San Sebastián Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Sebastián Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$1,027 Cheap Flights from Colorado to San Sebastian in 2025/26

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Find the cheapest flights from Colorado to San Sebastian

Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:30 pm - 8:40 amDEN-EAS

56h 10m2 stops

9:30 pm - 10:27 pmEAS-DEN

32h 57m2 stops

$1,027Iberia

Find Deal

Fri, Jan 9 - Wed, Jul 8

6:40 pm - 8:40 amDEN-EAS

30h 00m2 stops

1:40 pm - 11:35 pmEAS-DEN

17h 55m2 stops

$1,032Iberia

Find Deal

Tue, Apr 14 - Tue, Apr 21

5:25 pm - 8:50 pmDEN-EAS

19h 25m2 stops

9:20 am - 10:27 pmEAS-DEN

21h 07m2 stops

$1,092American Airlines

Find Deal

Fri, Jan 9 - Wed, Jul 8

5:25 pm - 8:50 pmDEN-EAS

19h 25m2 stops

9:20 am - 10:27 pmEAS-DEN

21h 07m2 stops

$1,217American Airlines

Find Deal

Fri, Jan 9 - Wed, Jul 8

11:15 am - 1:30 pmDEN-EAS

18h 15m2 stops

8:55 am - 11:25 amEAS-DEN

34h 30m3 stops

$1,247Multiple Airlines

Find Deal

Fri, Jan 9 - Wed, Jul 8

6:40 pm - 8:40 amDEN-EAS

30h 00m3 stops

5:55 pm - 4:35 pmEAS-DEN

30h 40m2 stops

$1,296Multiple Airlines

Find Deal

Tue, Apr 14 - Tue, Apr 21

1:00 am - 8:40 amDEN-EAS

47h 40m2 stops

1:40 pm - 8:15 amEAS-DEN

26h 35m2 stops

$1,405Multiple Airlines

Find Deal

Mon, Apr 13 - Tue, Apr 21

11:05 am - 5:20 pmDEN-EAS

22h 15m3 stops

5:55 pm - 3:35 pmEAS-DEN

29h 40m3 stops

$1,605Multiple Airlines

Find Deal

Tue, Apr 14 - Tue, Apr 21

7:20 pm - 1:30 pmDEN-EAS

34h 10m3 stops

8:55 am - 11:25 amEAS-DEN

34h 30m3 stops

$1,666Multiple Airlines

Find Deal

Fri, Jan 9 - Wed, Jul 8

7:20 pm - 8:50 pmDEN-EAS

41h 30m2 stops

9:20 am - 5:35 pmEAS-DEN

40h 15m2 stops

$2,170Multiple Airlines

Find Deal

Fri, Dec 19 - Fri, Dec 26

Iberia flights from Colorado to San Sebastian

Our best Iberia deals on Colorado to San Sebastian flight tickets

Iberia

Jan 9

DEN4:30 pmDenver Intl

56h 10m

2 stops

EAS8:40 amSan Sebastián

Jul 8

EAS9:30 pmSan Sebastián

32h 57m

2 stops

DEN10:27 pmDenver Intl

$1,027

Find similar

Iberia

Apr 14

DEN6:40 pmDenver Intl

30h 00m

2 stops

EAS8:40 amSan Sebastián

Apr 21

EAS1:40 pmSan Sebastián

17h 55m

2 stops

DEN11:35 pmDenver Intl

$1,032

Find similar

Iberia

Nov 14

DEN10:24 amDenver Intl

18h 36m

2 stops

EAS1:00 pmSan Sebastián

Nov 18

EAS9:30 pmSan Sebastián

26h 00m

2 stops

DEN3:30 pmDenver Intl

$2,033

Find similar

American Airlines flights from Colorado to San Sebastian

Our best American Airlines deals on Colorado to San Sebastian flight tickets

American Airlines

Jan 9

DEN5:25 pmDenver Intl

19h 25m

2 stops

EAS8:50 pmSan Sebastián

Jul 8

EAS9:20 amSan Sebastián

21h 07m

2 stops

DEN10:27 pmDenver Intl

$1,092

Find similar

American Airlines

Jan 9

DEN5:25 pmDenver Intl

19h 25m

2 stops

EAS8:50 pmSan Sebastián

Jul 8

EAS9:20 amSan Sebastián

21h 07m

2 stops

DEN10:27 pmDenver Intl

$1,217

Find similar

American Airlines

Nov 14

DEN11:59 pmDenver Intl

24h 41m

2 stops

EAS8:40 amSan Sebastián

Nov 18

EAS1:40 pmSan Sebastián

40h 42m

2 stops

DEN10:22 pmDenver Intl

$2,111

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 1/9

4:30 pm-8:40 am

2 stops56h 10m

San Sebastián

Wed 7/8

9:30 pm-10:27 pm

2 stops32h 57m

$1,027

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Tue 4/14

6:40 pm-8:40 am

2 stops30h 00m

San Sebastián

Tue 4/21

1:40 pm-11:35 pm

2 stops17h 55m

$1,032

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 1/9

5:25 pm-8:50 pm

2 stops19h 25m

San Sebastián

Wed 7/8

9:20 am-10:27 pm

2 stops21h 07m

$1,092

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 1/9

5:25 pm-8:50 pm

2 stops19h 25m

San Sebastián

Wed 7/8

9:20 am-10:27 pm

2 stops21h 07m

$1,217

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 1/9

11:15 am-1:30 pm

2 stops18h 15m

San Sebastián

Wed 7/8

8:55 am-11:25 am

3 stops34h 30m

$1,247

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Tue 4/14

6:40 pm-8:40 am

3 stops30h 00m

San Sebastián

Tue 4/21

5:55 pm-4:35 pm

2 stops30h 40m

$1,296

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Mon 4/13

1:00 am-8:40 am

2 stops47h 40m

San Sebastián

Tue 4/21

1:40 pm-8:15 am

2 stops26h 35m

$1,405

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Tue 4/14

11:05 am-5:20 pm

3 stops22h 15m

San Sebastián

Tue 4/21

5:55 pm-3:35 pm

3 stops29h 40m

$1,605

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 1/9

7:20 pm-1:30 pm

3 stops34h 10m

San Sebastián

Wed 7/8

8:55 am-11:25 am

3 stops34h 30m

$1,666

DenverSan Sebastian

DEN - EAS

DENEAS

Denver Intl

Fri 12/19

7:20 pm-8:50 pm

2 stops41h 30m

San Sebastián

Fri 12/26

9:20 am-5:35 pm

2 stops40h 15m

$2,170

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Colorado 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

Prices

Airlines

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 Colorado 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 Colorado 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 Colorado 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.

Cheap Colorado to San Sebastian flight deals and tips

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

Direct flights	None

There are no direct flights from Colorado to San Sebastian. There are no popular flight routes from Colorado to San Sebastian.

Search flight deals

When did momondo last update prices for flights from Colorado to San Sebastián Airport?
Prices for flights from Colorado to San Sebastián Airport were last updated today.
How many operators does momondo search for flights from Colorado to San Sebastián Airport?
There is 1 operator available for flights from Colorado to San Sebastián Airport as of November 2025.
How old do you have to be to fly from Colorado to San Sebastián Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to San Sebastián Airport.
What documentation or ID do you need to fly to San Sebastián Airport?
The travel and health documents you'll need for your trip to San Sebastián Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Sebastián Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Colorado to San Sebastian

Compare and see reviews for airlines that fly from Colorado to San Sebastian with momondo

Airline	Rating	Free Cancellation	Price
Iberia	PriceFrom $873	Free Cancellation	Rating 7.0 3,007 reviews		Search Iberia flights

Irun

Hondarribia

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Colorado to San Sebastian. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Colorado to San Sebastian flights to just show those with flexible booking policies.

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

Once you have performed a search for Colorado to San Sebastian flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to San Sebastian from Colorado. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.