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Cheap flights from Chicago O'Hare Intl Airport to San Sebastian from $376

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to San Sebastian departing on 8/22. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago O'Hare Intl Airport to San Sebastian

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
4:55 pm - 8:50 pm
ORD
-
EAS
20h 55m
1 stop
Iberia Logo
9:30 pm - 4:00 pm
EAS
-
ORD
25h 30m
1 stop
$838Iberia
Mon, Sep 28 - Mon, Oct 5
American Airlines Logo
11:40 am - 8:40 am
ORD
-
EAS
14h 00m
2 stops
American Airlines Logo
9:20 am - 7:35 pm
EAS
-
ORD
17h 15m
2 stops
$839American Airlines
Wed, Sep 30 - Wed, Oct 7
Multiple Airlines Logo
11:40 am - 8:40 am
ORD
-
EAS
14h 00m
2 stops
Multiple Airlines Logo
9:30 pm - 2:25 pm
EAS
-
ORD
23h 55m
1 stop
$842Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Iberia Logo
10:15 pm - 8:40 am
ORD
-
EAS
27h 25m
1 stop
Iberia Logo
9:20 am - 7:35 pm
EAS
-
ORD
17h 15m
2 stops
$844Iberia
Wed, Sep 30 - Wed, Oct 7
Multiple Airlines Logo
11:40 am - 1:00 pm
ORD
-
EAS
18h 20m
2 stops
Multiple Airlines Logo
9:30 pm - 4:00 pm
EAS
-
ORD
25h 30m
1 stop
$846Multiple Airlines
Fri, Oct 16 - Sun, Oct 18
Iberia Logo
10:15 pm - 8:40 am
ORD
-
EAS
27h 25m
1 stop
Iberia Logo
9:30 pm - 2:25 pm
EAS
-
ORD
23h 55m
1 stop
$847Iberia
Mon, Sep 28 - Mon, Oct 5
British Airways Logo
10:20 pm - 8:50 pm
ORD
-
EAS
15h 30m
1 stop
British Airways Logo
9:30 pm - 2:25 pm
EAS
-
ORD
23h 55m
1 stop
$853British Airways
Wed, Oct 14 - Tue, Oct 20
British Airways Logo
3:20 pm - 1:00 pm
ORD
-
EAS
14h 40m
2 stops
British Airways Logo
9:30 pm - 2:25 pm
EAS
-
ORD
23h 55m
1 stop
$855British Airways
Wed, Oct 14 - Mon, Oct 19
Iberia Logo
10:15 pm - 8:40 am
ORD
-
EAS
27h 25m
1 stop
Iberia Logo
9:20 am - 2:25 pm
EAS
-
ORD
12h 05m
1 stop
$866Iberia
Wed, Sep 30 - Wed, Oct 7
Iberia Logo
11:37 am - 8:40 am
ORD
-
EAS
14h 03m
2 stops
Iberia Logo
9:20 am - 7:35 pm
EAS
-
ORD
17h 15m
2 stops
$869Iberia
Wed, Sep 30 - Wed, Oct 7

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American Airlines flights from Chicago O'Hare Intl Airport to San Sebastian

Our best American Airlines deals on Chicago O'Hare Intl Airport to San Sebastian flight tickets
American Airlines
Sep 30
ORD11:40 amChicago O'Hare Intl
14h 00m
2 stops
EAS8:40 amSan Sebastián
Oct 7
EAS9:20 amSan Sebastián
17h 15m
2 stops
ORD7:35 pmChicago O'Hare Intl
$839
American Airlines
Sep 8
ORD10:25 pmChicago O'Hare Intl
27h 15m
1 stop
EAS8:40 amSan Sebastián
Sep 15
EAS9:20 amSan Sebastián
17h 18m
2 stops
ORD7:38 pmChicago O'Hare Intl
$876
American Airlines
Sep 8
ORD11:15 amChicago O'Hare Intl
14h 25m
2 stops
EAS8:40 amSan Sebastián
Sep 15
EAS9:20 amSan Sebastián
17h 18m
2 stops
ORD7:38 pmChicago O'Hare Intl
$901

Iberia flights from Chicago O'Hare Intl Airport to San Sebastian

Our best Iberia deals on Chicago O'Hare Intl Airport to San Sebastian flight tickets
Iberia
Sep 28
ORD4:55 pmChicago O'Hare Intl
20h 55m
1 stop
EAS8:50 pmSan Sebastián
Oct 5
EAS9:30 pmSan Sebastián
25h 30m
1 stop
ORD4:00 pmChicago O'Hare Intl
$838
Iberia
Sep 30
ORD10:15 pmChicago O'Hare Intl
27h 25m
1 stop
EAS8:40 amSan Sebastián
Oct 7
EAS9:20 amSan Sebastián
17h 15m
2 stops
ORD7:35 pmChicago O'Hare Intl
$844
Iberia
Sep 28
ORD10:15 pmChicago O'Hare Intl
27h 25m
1 stop
EAS8:40 amSan Sebastián
Oct 5
EAS9:30 pmSan Sebastián
23h 55m
1 stop
ORD2:25 pmChicago O'Hare Intl
$847

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 June 11, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 9/28

4:55 pm-8:50 pm

1 stop20h 55m

San Sebastián

Mon 10/5

9:30 pm-4:00 pm

1 stop25h 30m

$838
Quickest round-trip

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 9/30

11:40 am-8:40 am

2 stops14h 00m

San Sebastián

Wed 10/7

9:20 am-7:35 pm

2 stops17h 15m

$839

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 9/28

11:40 am-8:40 am

2 stops14h 00m

San Sebastián

Mon 10/5

9:30 pm-2:25 pm

1 stop23h 55m

$842

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 9/30

10:15 pm-8:40 am

1 stop27h 25m

San Sebastián

Wed 10/7

9:20 am-7:35 pm

2 stops17h 15m

$844

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Fri 10/16

11:40 am-1:00 pm

2 stops18h 20m

San Sebastián

Sun 10/18

9:30 pm-4:00 pm

1 stop25h 30m

$846

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 9/28

10:15 pm-8:40 am

1 stop27h 25m

San Sebastián

Mon 10/5

9:30 pm-2:25 pm

1 stop23h 55m

$847

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 10/14

10:20 pm-8:50 pm

1 stop15h 30m

San Sebastián

Tue 10/20

9:30 pm-2:25 pm

1 stop23h 55m

$853

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 10/14

3:20 pm-1:00 pm

2 stops14h 40m

San Sebastián

Mon 10/19

9:30 pm-2:25 pm

1 stop23h 55m

$855

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 9/30

10:15 pm-8:40 am

1 stop27h 25m

San Sebastián

Wed 10/7

9:20 am-2:25 pm

1 stop12h 05m

$866

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 9/30

11:37 am-8:40 am

2 stops14h 03m

San Sebastián

Wed 10/7

9:20 am-7:35 pm

2 stops17h 15m

$869

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to San Sebastian from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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 airline that flies from Chicago O'Hare Intl to San Sebastián?

Iberia is the most popular carrier operating from Chicago O'Hare Intl to San Sebastián

What airlines fly to San Sebastian?

Lufthansa, United Airlines and American Airlines are the top three most popular airlines that fly to San Sebastian from Chicago O'Hare Intl Airport according to our data. Lufthansa is the first choice among our users, with 42% 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 to book flights from Chicago O'Hare Intl Airport to San Sebastian

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

Cheap Chicago O'Hare Intl Airport to San Sebastian (ORD to EAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to San Sebastian

Fastest flight time

14h 00m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to San Sebastian takes 14h 00m
There are no direct flights from Chicago O'Hare Intl Airport to San Sebastian. There are no popular flight routes from Chicago O'Hare Intl Airport to San Sebastian.
Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to San Sebastian

  • How far is Chicago O'Hare Intl to San Sebastián by plane?

    The distance between Chicago O'Hare Intl and San Sebastián is about 4155.4 mi. Flights usually cover this in 14h 00m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to San Sebastián Airport?

    Prices for flights from Chicago O'Hare Intl Airport to San Sebastián Airport were last updated today.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to San Sebastián Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to San Sebastián Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare 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 Chicago O'Hare Intl Airport to San Sebastian?

Best airlines flying from Chicago O'Hare Intl Airport to San Sebastian

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to San Sebastian with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $694Free CancellationRating
7.1
11,635 reviews
Search American Airlines 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 Chicago to San Sebastian?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Sebastian from Chicago.

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

Yes. momondo enables you to select and highlight flights to San Sebastian from Chicago with this policy.

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

Once all potential Chicago to San Sebastian flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to San Sebastian, momondo offers a useful price alert feature which will track prices for flights to San Sebastian from Chicago and alert you when they change.

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