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$346+ Cheap flights from O'Hare Intl (ORD) to San Sebastian (EAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — EAS
feb. 25 — mar. 41
mié. 2/25
mié. 3/4
1 adult, Economy
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Cheap flight deals from O'Hare Intl to San Sebastian

Cheapest flights from O'Hare Intl to San Sebastian
Explore the most affordable flight options available from O'Hare Intl to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 26, 2026.

This Orbitz deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/284:30 pm
ORD
-
EAS
1 stop13h 30m
Iberia
lun. 10/129:30 pm
EAS
-
ORD
1 stop23h 45m
Iberia
Deal found 1/25$678
This American Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/288:18 am
ORD
-
EAS
2 stops17h 22m
American Airlines
lun. 10/121:40 pm
EAS
-
ORD
2 stops17h 13m
American Airlines
Deal found 1/25$739
This American Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/304:30 pm
ORD
-
EAS
1 stop13h 30m
American Airlines
mié. 4/89:20 am
EAS
-
ORD
1 stop11h 55m
American Airlines
Deal found 1/26$798
This American Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/810:15 pm
ORD
-
EAS
1 stop27h 25m
American Airlines
mar. 9/159:20 am
EAS
-
ORD
1 stop11h 55m
American Airlines
Deal found 1/26$807
This American Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/129:55 am
ORD
-
EAS
2 stops15h 45m
American Airlines
jue. 2/199:20 am
EAS
-
ORD
2 stops19h 10m
American Airlines
Deal found 1/25$902
This Iberia deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/1810:25 pm
ORD
-
EAS
1 stop27h 15m
Iberia
mar. 6/29:30 pm
EAS
-
ORD
1 stop23h 45m
Iberia
Deal found 1/25$947
This Travelocity deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/1510:25 pm
ORD
-
EAS
1 stop15h 25m
Iberia
dom. 5/249:30 pm
EAS
-
ORD
2 stops46h 50m
Iberia
Deal found 1/25$1,009
This American Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/188:38 am
ORD
-
EAS
2 stops17h 02m
American Airlines
mar. 6/21:40 pm
EAS
-
ORD
2 stops17h 46m
American Airlines
Deal found 1/26$1,034

Find flight deals from O'Hare Intl to San Sebastian

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to San Sebastian (EAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 26, 2026.

Most accurate provider

Cheapflightsfares
2 stars

Most trusted provider

Cheapflightsfares
2 stars

Round-trip from

$798
(American Airlines)

One-way from

$346
(Kiwi.com)
Provider with most accurate pricing for Chicago O'Hare Intl-San Sebastián flight deals.
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Provider most trusted by Cheapflights users for Chicago O'Hare Intl-San Sebastián flights.
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From Chicago O'Hare Intl to San Sebastián
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One-way flight from Chicago O'Hare Intl to San Sebastián
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Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl 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, Cheapflights users made 2,558,603 searches. Data last updated enero 26, 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

O'Hare Intl

Fly to

San Sebastian

Route

Depart

Return

Price

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

lun. 3/30

4:30 pm-8:50 pm

1 stop21h 20m

San Sebastián

mié. 4/8

9:20 am-2:15 pm

1 stop11h 55m

$798

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

lun. 3/30

10:28 am-8:40 am

2 stops15h 12m

San Sebastián

mié. 4/8

9:20 am-2:15 pm

1 stop11h 55m

$802

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

jue. 2/12

9:55 am-8:40 am

2 stops15h 45m

San Sebastián

jue. 2/19

9:20 am-9:30 pm

2 stops19h 10m

$902

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

lun. 5/18

10:25 pm-8:40 am

1 stop27h 15m

San Sebastián

mar. 6/2

9:30 pm-4:01 pm

2 stops25h 31m

$947

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

lun. 5/18

8:38 am-8:40 am

2 stops17h 02m

San Sebastián

mar. 6/2

1:40 pm-12:26 am

2 stops17h 46m

$1,034

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

jue. 4/16

4:28 pm-5:20 pm

3 stops41h 52m

$346

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

jue. 4/16

5:00 pm-2:40 pm

1 stop14h 40m

$542

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

vie. 5/22

4:47 pm-8:20 am

3 stops32h 33m

$555

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

jue. 4/23

11:21 am-2:40 pm

2 stops20h 19m

$5,850

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

jue. 4/23

5:00 pm-2:40 pm

1 stop14h 40m

$12,963

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

  • Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-San Sebastian flights, users find the pricing of Cheapflightsfares to be most consistent on Cheapflights vs. Cheapflightsfares Users can find the same prices on Chicago O'Hare Intl Airport-San Sebastian flight deals on Cheapflights vs. Cheapflightsfares 90-95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-San Sebastian flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-San Sebastian flights, Cheapflights users trust Cheapflightsfares the most. Cheapflightsfares has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-San Sebastian flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from O'Hare Intl to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from O'Hare Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to San Sebastian

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to San Sebastian?

Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Sebastian (average of $547). Flying from Chicago O'Hare Intl Airport to San Sebastian in January is currently the most expensive (average of $901). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing San Sebastian

Get insights into the airlines that provide service to San Sebastian. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Sebastian. Reviews last updated enero 26, 2026.
Get a feel of what it's like to fly with American Airlines from Chicago O'Hare Intl Airport to San Sebastian by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,189 reviews

Food

6.4

Entertainment

6.9

Overall

7.2

Crew

8.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,189 reviews
American Airlines
7.2
Good
11,189 reviews

Food

6.4

Entertainment

6.9

Overall

7.2

Crew

8.0

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to San Sebastian. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Sebastian from Chicago O'Hare Intl?

    San Sebastián (EAS) is the airport you will fly into if you book a flight from Chicago O'Hare Intl to San Sebastian. You should not have trouble finding flights to San Sebastián from Chicago O'Hare Intl; the airport handles an average of 0 inbound flights from Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 1 airline has flights to the San Sebastian airport from Chicago O'Hare Intl. It is only a 9.7 mi journey from San Sebastián (EAS) to San Sebastian’s city center.

  • How long is the flight from Chicago O'Hare Intl Airport to San Sebastian?

    Departing from Chicago O'Hare Intl Airport to San Sebastian will take you 15h 12m. Airlines will cover a distance of 4162 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Chicago O'Hare Intl Airport to San Sebastian round-trip?

    Currently priced at $694, American Airlines will fly you from Chicago O'Hare Intl Airport to San Sebastian and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip.

  • Can I find deals for flights from O'Hare Intl to San Sebastian that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to San Sebastian flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to San Sebastian?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to San Sebastian.

  • Can I find deals for business class flights from O'Hare Intl to San Sebastian?

    Yes. Cheapflights offers flight deals from O'Hare Intl to San Sebastian by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to San Sebastian?

    Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Sebastian (average of $547). Flying from Chicago O'Hare Intl Airport to San Sebastian in January is currently the most expensive (average of $901). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for O'Hare Intl to San Sebastian

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Bilbao flights
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Top airline flying from O'Hare Intl to San Sebastian

Discover the top airline that operate flights from O'Hare Intl to San Sebastian. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$694Average$1,754FlexibilityNo cancel feeOn-time71%

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