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Cheap flights from Chicago O'Hare Intl Airport to San Sebastian from $313

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 4/12. 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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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
5:40 pm - 8:50 pm
ORD
-
EAS
20h 10m1 stop
Iberia Logo
9:20 am - 9:25 pm
EAS
-
ORD
18h 05m2 stops
$652Iberia
Sun, Feb 22 - Tue, Mar 10
Multiple Airlines Logo
5:40 pm - 1:30 pm
ORD
-
EAS
36h 50m2 stops
Multiple Airlines Logo
2:05 pm - 3:55 pm
EAS
-
ORD
31h 50m2 stops
$665Multiple Airlines
Sun, Feb 22 - Tue, Mar 10
Multiple Airlines Logo
5:40 pm - 8:50 pm
ORD
-
EAS
20h 10m1 stop
Multiple Airlines Logo
9:20 am - 5:00 pm
EAS
-
ORD
13h 40m1 stop
$668Multiple Airlines
Sun, Feb 22 - Tue, Mar 10
Multiple Airlines Logo
5:40 pm - 8:50 pm
ORD
-
EAS
20h 10m1 stop
Multiple Airlines Logo
9:30 pm - 5:00 pm
EAS
-
ORD
25h 30m1 stop
$677Multiple Airlines
Sun, Feb 22 - Tue, Mar 10
Multiple Airlines Logo
5:40 pm - 8:50 pm
ORD
-
EAS
20h 10m1 stop
Multiple Airlines Logo
9:30 pm - 5:00 pm
EAS
-
ORD
25h 30m1 stop
$678Multiple Airlines
Sun, Feb 22 - Tue, Mar 10
Multiple Airlines Logo
5:40 pm - 1:30 pm
ORD
-
EAS
36h 50m2 stops
Multiple Airlines Logo
2:05 pm - 3:55 pm
EAS
-
ORD
31h 50m2 stops
$696Multiple Airlines
Sun, Feb 22 - Tue, Mar 10
Iberia Logo
11:38 am - 1:00 pm
ORD
-
EAS
18h 22m2 stops
Iberia Logo
9:20 am - 2:55 pm
EAS
-
ORD
12h 35m1 stop
$771Iberia
Wed, Jan 28 - Sun, Feb 1
American Airlines Logo
11:52 am - 1:00 pm
ORD
-
EAS
18h 08m2 stops
American Airlines Logo
9:20 am - 8:10 pm
EAS
-
ORD
17h 50m2 stops
$781American Airlines
Wed, Jan 28 - Sun, Feb 1
American Airlines Logo
4:30 pm - 8:50 pm
ORD
-
EAS
21h 20m1 stop
American Airlines Logo
9:20 am - 9:11 pm
EAS
-
ORD
18h 51m2 stops
$807American Airlines
Mon, Mar 30 - Wed, Apr 8
Iberia Logo
4:30 pm - 8:50 pm
ORD
-
EAS
21h 20m1 stop
Iberia Logo
9:30 pm - 2:15 pm
EAS
-
ORD
23h 45m1 stop
$808Iberia
Mon, Mar 30 - Wed, Apr 8

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
Feb 22
ORD5:40 pmChicago O'Hare Intl
20h 10m
1 stop
EAS8:50 pmSan Sebastián
Mar 10
EAS9:20 amSan Sebastián
18h 05m
2 stops
ORD9:25 pmChicago O'Hare Intl
$652
Find similar
Iberia
Jan 28
ORD1:34 pmChicago O'Hare Intl
16h 26m
2 stops
EAS1:00 pmSan Sebastián
Feb 1
EAS9:20 amSan Sebastián
12h 35m
1 stop
ORD2:55 pmChicago O'Hare Intl
$771
Find similar
Iberia
Mar 30
ORD4:30 pmChicago O'Hare Intl
21h 20m
1 stop
EAS8:50 pmSan Sebastián
Apr 8
EAS9:30 pmSan Sebastián
23h 45m
1 stop
ORD2:15 pmChicago O'Hare Intl
$808
Find similar

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
Jan 28
ORD11:52 amChicago O'Hare Intl
18h 08m
2 stops
EAS1:00 pmSan Sebastián
Feb 1
EAS9:20 amSan Sebastián
17h 50m
2 stops
ORD8:10 pmChicago O'Hare Intl
$781
Find similar
American Airlines
Mar 30
ORD4:30 pmChicago O'Hare Intl
21h 20m
1 stop
EAS8:50 pmSan Sebastián
Apr 8
EAS9:20 amSan Sebastián
18h 51m
2 stops
ORD9:11 pmChicago O'Hare Intl
$807
Find similar
American Airlines
Mar 30
ORD7:52 amChicago O'Hare Intl
17h 48m
2 stops
EAS8:40 amSan Sebastián
Apr 8
EAS9:20 amSan Sebastián
18h 51m
2 stops
ORD9:11 pmChicago O'Hare Intl
$811
Find similar

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 January 1, 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

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Sun 2/22

5:40 pm-8:50 pm

1 stop20h 10m

San Sebastián

Tue 3/10

9:20 am-9:25 pm

2 stops18h 05m

$652

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Sun 2/22

5:40 pm-1:30 pm

2 stops36h 50m

San Sebastián

Tue 3/10

2:05 pm-3:55 pm

2 stops31h 50m

$665

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Sun 2/22

5:40 pm-8:50 pm

1 stop20h 10m

San Sebastián

Tue 3/10

9:20 am-5:00 pm

1 stop13h 40m

$668

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Sun 2/22

5:40 pm-8:50 pm

1 stop20h 10m

San Sebastián

Tue 3/10

9:30 pm-5:00 pm

1 stop25h 30m

$677

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Sun 2/22

5:40 pm-8:50 pm

1 stop20h 10m

San Sebastián

Tue 3/10

9:30 pm-5:00 pm

1 stop25h 30m

$678

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Sun 2/22

5:40 pm-1:30 pm

2 stops36h 50m

San Sebastián

Tue 3/10

2:05 pm-3:55 pm

2 stops31h 50m

$696

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 1/28

11:38 am-1:00 pm

2 stops18h 22m

San Sebastián

Sun 2/1

9:20 am-2:55 pm

1 stop12h 35m

$771

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 1/28

11:52 am-1:00 pm

2 stops18h 08m

San Sebastián

Sun 2/1

9:20 am-8:10 pm

2 stops17h 50m

$781

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 3/30

4:30 pm-8:50 pm

1 stop21h 20m

San Sebastián

Wed 4/8

9:20 am-9:11 pm

2 stops18h 51m

$807

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 3/30

4:30 pm-8:50 pm

1 stop21h 20m

San Sebastián

Wed 4/8

9:30 pm-2:15 pm

1 stop23h 45m

$808

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 airlines fly to San Sebastian?

Iberia, Lufthansa and United Airlines are the top three most popular airlines that fly to San Sebastian from Chicago O'Hare Intl Airport according to our data. Iberia is the first choice among our users, with 30% of people opting to fly with this airline when traveling to San Sebastian. Keep in mind that there are 4 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

13h 30m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to San Sebastian takes 13h 30m
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

  • 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 13h 30m, 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
7.2
11,069 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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