HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Sebastian

$618+ Cheap flights from O'Hare Intl (ORD) to San Sebastian (EAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — EAS
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl to San Sebastian with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find 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 October 28, 2025.

This Expedia deal was found by Cheapflights users on 10/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/245:40 pmORD - EAS
1 stop20h 10mIberia
Sun 12/79:20 amEAS - ORD
1 stop12h 35mIberia
Deal found 10/26$618
This Iberia deal was found by Cheapflights users on 10/25. 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.
Fri 11/711:48 amORD - EAS
2 stops18h 12mIberia
Tue 11/119:30 pmEAS - ORD
1 stop24h 25mIberia
Deal found 10/25$1,209
This American Airlines deal was found by Cheapflights users on 10/26. 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.
Fri 11/710:07 amORD - EAS
2 stops19h 53mAmerican Airlines
Tue 11/119:20 amEAS - ORD
2 stops32h 31mAmerican Airlines
Deal found 10/26$1,324
This Ovago deal was found by Cheapflights users on 10/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/208:40 pmORD - EAS
2 stops41h 10mIberia
Sun 11/309:30 pmEAS - ORD
1 stop24h 25mIberia
Deal found 10/27$1,908

Cheap 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 October 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$618
(Expedia)
Provider with most accurate pricing for Chicago O'Hare Intl-San Sebastián flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago O'Hare Intl-San Sebastián flights.
Search Deals
From Chicago O'Hare Intl to San Sebastián
Search Deals

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 October 28, 2025.
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

Mon 11/24

5:40 pm-8:50 pm

1 stop20h 10m

San Sebastián

Sun 12/7

9:20 am-2:55 pm

1 stop12h 35m

$618

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Fri 2/13

5:40 pm-8:50 pm

1 stop20h 10m

San Sebastián

Mon 2/16

9:30 pm-2:55 pm

1 stop24h 25m

$627

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 1/28

8:16 am-8:40 am

2 stops17h 24m

San Sebastián

Sun 2/1

9:20 am-8:10 pm

2 stops17h 50m

$631

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Fri 2/13

4:45 pm-8:50 pm

1 stop21h 05m

San Sebastián

Mon 2/16

9:30 pm-6:45 pm

2 stops28h 15m

$662

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 1/28

9:00 am-1:00 pm

2 stops21h 00m

San Sebastián

Sun 2/1

9:20 am-2:55 pm

1 stop12h 35m

$721

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 3/16

7:30 pm-1:00 pm

1 stop11h 30m

San Sebastián

Wed 4/1

9:30 pm-2:15 pm

1 stop23h 45m

$905

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Tue 3/17

7:30 pm-8:40 am

1 stop31h 10m

San Sebastián

Tue 3/31

9:30 pm-1:30 pm

2 stops23h 00m

$916

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

  • Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-San Sebastian flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-San Sebastian flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 July is currently the most expensive (average of $871). 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 October 28, 2025.
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
11,032 reviews

Boarding

7.5

Crew

8.0

Overall

7.2

Comfort

7.2

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
11,032 reviews
American Airlines
7.2
Good
11,032 reviews

Boarding

7.5

Crew

8.0

Overall

7.2

Comfort

7.2

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

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 20h 10m. Airlines will cover a distance of 4162 mi.

  • 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 July is currently the most expensive (average of $871). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Midway to Bilbao flights

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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$694Average$1,754FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.