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$260+ Cheap flights from Chicago (CHI) 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — EAS
Apr 29 — May 61
Tue 4/29
Tue 5/6
1 adult, Economy
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Cheap flight deals from Chicago to San Sebastian

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) 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 April 24, 2025.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$913
(Cheapflightsfares)

One-way from

$260
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$744
Provider with most accurate pricing for Chicago (CHI)-San Sebastián flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-San Sebastián flights.
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From Chicago (CHI) to San Sebastián
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One-way flight from Chicago (CHI) to San Sebastián
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Highest demand for flights based on searches. 1% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($79 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Chicago to San Sebastian

Cheapest flights from Chicago to San Sebastian
Explore the most affordable flight options available from Chicago to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/274:30 pmORD - EAS
1 stop21h 20mIberia
Fri 9/59:20 amEAS - ORD
1 stop11h 55mIberia
Deal found 4/23$913
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Wed 8/278:25 amORD - EAS
2 stops17h 15mAmerican Airlines
Fri 9/59:20 amEAS - ORD
1 stop11h 55mAmerican Airlines
Deal found 4/23$955
This Mytrip deal was found by Cheapflights users on 4/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/48:37 amORD - EAS
3 stops40h 53mMultiple Airlines
Wed 6/115:55 pmEAS - ORD
2 stops28h 30mMultiple Airlines
Deal found 4/23$1,069
This SmartFares deal was found by Cheapflights users on 4/23. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/72:35 pmORD - EAS
2 stops35h 05mAvianca
Sat 6/149:30 pmEAS - ORD
2 stops22h 45mAvianca
Deal found 4/23$1,615

Cheapflights Fare Finder

Customize your flight search to find flights from Chicago 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 April 24, 2025.
Use the filters below to find and compare flights from Chicago to San Sebastian that are best for you.

Fly from

Chicago

Fly to

San Sebastian

Route

Depart

Return

Price

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 8/27

4:30 pm-8:50 pm

1 stop21h 20m

San Sebastián

Fri 9/5

9:20 am-2:15 pm

1 stop11h 55m

$913

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 8/27

8:25 am-8:40 am

2 stops17h 15m

San Sebastián

Fri 9/5

9:20 am-2:15 pm

1 stop11h 55m

$955

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 6/4

8:37 am-8:30 am

3 stops40h 53m

San Sebastián

Wed 6/11

5:55 pm-3:25 pm

2 stops28h 30m

$1,069

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Sat 6/7

2:35 pm-8:40 am

2 stops35h 05m

San Sebastián

Sat 6/14

9:30 pm-1:15 pm

2 stops22h 45m

$1,615

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 8/4

6:10 pm-8:30 am

2 stops31h 20m

$260

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 8/4

10:35 pm-8:50 pm

1 stop15h 15m

$658

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Sat 6/7

2:35 pm-8:40 am

2 stops35h 05m

$812

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

  • Most accurate provider: When it comes to deals on Chicago-San Sebastian flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Chicago-San Sebastian flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Chicago-San Sebastian flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-San Sebastian flights, Cheapflights users trust Expedia the most. Expedia 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-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 Chicago to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Chicago 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 to San Sebastian
No data available for this route at this time. Please check back soon.

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 April 24, 2025.
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Crew

8.0

Overall

7.2

Entertainment

6.9

Boarding

7.5

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2025

MYR - CLT

This flight was impacted by a nearly 4, yes 4 hour delay. They replaced a 777 with another one and it had to be cleaned and catered before we could depart. Great crew did it without complaint.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Crew

8.0

Overall

7.2

Entertainment

6.9

Boarding

7.5

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2025

MYR - CLT

This flight was impacted by a nearly 4, yes 4 hour delay. They replaced a 777 with another one and it had to be cleaned and catered before we could depart. Great crew did it without complaint.
Iberia
7.0
Good
2,686 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Crew

8.0

Overall

7.2

Entertainment

6.9

Boarding

7.5

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2025

MYR - CLT

This flight was impacted by a nearly 4, yes 4 hour delay. They replaced a 777 with another one and it had to be cleaned and catered before we could depart. Great crew did it without complaint.
Avianca
6.7
Okay
2,319 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Crew

8.0

Overall

7.2

Entertainment

6.9

Boarding

7.5

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2025

MYR - CLT

This flight was impacted by a nearly 4, yes 4 hour delay. They replaced a 777 with another one and it had to be cleaned and catered before we could depart. Great crew did it without complaint.

Related info for your journey

Find useful and relevant information for your journey from Chicago 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?

    San Sebastián (EAS), located 9.7 mi from the city center, is the airport you fly into when you book flights from Chicago to San Sebastian. 1 airline have flights to San Sebastián from Chicago on a regular basis. Booking flights from Chicago to San Sebastián should not be difficult; the airport handles an average of 0 inbound flights from Chicago per day.

  • What are the cheapest airlines flying from Chicago to San Sebastian round-trip?

    Flying on Iberia is currently your cheapest option to San Sebastian, with prices starting at $913. Additional round-trip tickets that might be worth considering are offered by American Airlines and Avianca, with the lowest prices starting at $955 and $1,615, respectively. Iberia is priced at 14% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Chicago to San Sebastian that include hotel bookings?

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

  • How can I find direct flights from Chicago to San Sebastian?

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

  • Can I find deals for business class flights from Chicago to San Sebastian?

    Yes. Cheapflights offers flight deals from Chicago 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.

See more FAQs

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Alternative routes for Chicago to San Sebastian

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

Discover the top airline that operate flights from Chicago 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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$679Average$1,177FlexibilityNo cancel feeOn-time77%

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