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Cheap flights from Chicago O'Hare Intl Airport to San Sebastian from $732

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 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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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
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
$835Iberia
Mon, Sep 28 - Mon, Oct 5
Iberia Logo
4:55 pm - 1:00 pm
ORD
-
EAS
13h 05m
1 stop
Iberia Logo
9:30 pm - 4:00 pm
EAS
-
ORD
25h 30m
1 stop
$836Iberia
Mon, Sep 28 - Mon, Oct 5
Iberia Logo
10:15 pm - 8:50 pm
ORD
-
EAS
15h 35m
1 stop
Iberia Logo
9:30 pm - 4:00 pm
EAS
-
ORD
25h 30m
1 stop
$837Iberia
Mon, Sep 28 - Mon, Oct 5
Iberia Logo
4:45 pm - 1:00 pm
ORD
-
EAS
13h 15m
2 stops
Iberia Logo
9:30 pm - 4:00 pm
EAS
-
ORD
25h 30m
1 stop
$840Iberia
Mon, Sep 28 - Mon, Oct 5
Multiple Airlines Logo
9:27 am - 8:40 am
ORD
-
EAS
16h 13m
2 stops
Multiple Airlines Logo
9:30 pm - 4:00 pm
EAS
-
ORD
25h 30m
1 stop
$841Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Iberia Logo
4:45 pm - 1:00 pm
ORD
-
EAS
13h 15m
2 stops
Iberia Logo
9:30 pm - 4:00 pm
EAS
-
ORD
25h 30m
1 stop
$842Iberia
Mon, Sep 28 - Mon, Oct 5
Iberia Logo
9:27 am - 8:40 am
ORD
-
EAS
16h 13m
2 stops
Iberia Logo
9:30 pm - 3:10 pm
EAS
-
ORD
24h 40m
2 stops
$848Iberia
Mon, Sep 28 - Mon, Oct 5
Iberia Logo
4:45 pm - 1:00 pm
ORD
-
EAS
13h 15m
2 stops
Iberia Logo
9:30 pm - 3:10 pm
EAS
-
ORD
24h 40m
2 stops
$849Iberia
Mon, Sep 28 - Mon, Oct 5
Iberia Logo
4:45 pm - 1:00 pm
ORD
-
EAS
13h 15m
2 stops
Iberia Logo
9:30 pm - 3:10 pm
EAS
-
ORD
24h 40m
2 stops
$850Iberia
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 - 4:00 pm
EAS
-
ORD
13h 40m
1 stop
$866Iberia
Tue, Sep 8 - Tue, Sep 15

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
$835
Iberia
Sep 28
ORD4:55 pmChicago O'Hare Intl
13h 05m
1 stop
EAS1:00 pmSan Sebastián
Oct 5
EAS9:30 pmSan Sebastián
25h 30m
1 stop
ORD4:00 pmChicago O'Hare Intl
$836
Iberia
Sep 28
ORD10:15 pmChicago O'Hare Intl
15h 35m
1 stop
EAS8:50 pmSan Sebastián
Oct 5
EAS9:30 pmSan Sebastián
25h 30m
1 stop
ORD4:00 pmChicago O'Hare Intl
$837

British Airways flights from Chicago O'Hare Intl Airport to San Sebastian

Our best British Airways deals on Chicago O'Hare Intl Airport to San Sebastian flight tickets
British Airways
Sep 30
ORD4:55 pmChicago O'Hare Intl
13h 05m
1 stop
EAS1:00 pmSan Sebastián
Oct 7
EAS1:40 pmSan Sebastián
33h 20m
1 stop
ORD4:00 pmChicago O'Hare Intl
$896
British Airways
Sep 26
ORD7:05 pmChicago O'Hare Intl
14h 05m
1 stop
EAS4:10 pmSan Sebastián
Oct 2
EAS3:25 pmSan Sebastián
31h 30m
1 stop
ORD3:55 pmChicago O'Hare Intl
$1,008
British Airways
Sep 26
ORD5:00 pmChicago O'Hare Intl
16h 10m
1 stop
EAS4:10 pmSan Sebastián
Oct 5
EAS1:15 pmSan Sebastián
33h 40m
1 stop
ORD3:55 pmChicago O'Hare Intl
$1,009

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 April 5, 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

$835

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 9/28

4:55 pm-1:00 pm

1 stop13h 05m

San Sebastián

Mon 10/5

9:30 pm-4:00 pm

1 stop25h 30m

$836

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 9/28

10:15 pm-8:50 pm

1 stop15h 35m

San Sebastián

Mon 10/5

9:30 pm-4:00 pm

1 stop25h 30m

$837

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 9/28

4:45 pm-1:00 pm

2 stops13h 15m

San Sebastián

Mon 10/5

9:30 pm-4:00 pm

1 stop25h 30m

$840

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 9/28

9:27 am-8:40 am

2 stops16h 13m

San Sebastián

Mon 10/5

9:30 pm-4:00 pm

1 stop25h 30m

$841

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 9/28

4:45 pm-1:00 pm

2 stops13h 15m

San Sebastián

Mon 10/5

9:30 pm-4:00 pm

1 stop25h 30m

$842

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 9/28

9:27 am-8:40 am

2 stops16h 13m

San Sebastián

Mon 10/5

9:30 pm-3:10 pm

2 stops24h 40m

$848
Quickest round-trip

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 9/28

4:45 pm-1:00 pm

2 stops13h 15m

San Sebastián

Mon 10/5

9:30 pm-3:10 pm

2 stops24h 40m

$849

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 9/28

4:45 pm-1:00 pm

2 stops13h 15m

San Sebastián

Mon 10/5

9:30 pm-3:10 pm

2 stops24h 40m

$850

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Tue 9/8

10:15 pm-8:40 am

1 stop27h 25m

San Sebastián

Tue 9/15

9:20 am-4:00 pm

1 stop13h 40m

$866

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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

13h 05m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to San Sebastian takes 13h 05m
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 13h 05m, 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
11,555 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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