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$685+ Cheap flights from Chicago (CHI) 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — EAS
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
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 January 21, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$685
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$686
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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High demand for flights, 8% potential price rise
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Cheapest flight prices on average. 6% potential price decrease ($68 potential savings vs. average RT price).
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Average for round-trip flights in January 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 January 21, 2025.

This American Airlines deal was found by Cheapflights users on 1/20. 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.
Mon 3/34:45 pmORD - EAS
1 stop13h 15mMultiple Airlines
Mon 3/109:30 pmEAS - ORD
1 stop24h 00mMultiple Airlines
Deal found 1/20$685
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Mon 3/38:16 amORD - EAS
2 stops17h 24mAmerican Airlines
Mon 3/109:20 amEAS - ORD
2 stops19h 08mAmerican Airlines
Deal found 1/20$741
This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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 1/21$855

Find flights from Chicago to San Sebastian within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 3/3

4:45 pm-1:00 pm

1 stop13h 15m

San Sebastián

Mon 3/10

9:30 pm-3:30 pm

1 stop24h 00m

$685

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Mon 3/3

8:16 am-8:40 am

2 stops17h 24m

San Sebastián

Mon 3/10

9:20 am-10:28 pm

2 stops19h 08m

$741

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Fri 3/7

11:45 am-1:00 pm

2 stops18h 15m

San Sebastián

Fri 3/14

1:40 pm-5:33 pm

2 stops33h 53m

$932

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Compare providers for flights from Chicago to San Sebastian

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to San Sebastian in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-San Sebastian flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Chicago-San Sebastian flight deals on Cheapflights vs. AranGrant >95% 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 AranGrant the most. AranGrant 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.

Travel insights for flights from Chicago to San Sebastian

Get recent, data-driven insights about flights from Chicago to San Sebastian including ideal travel times, pricing trends, and more.
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 January 21, 2025.
American Airlines
7.2
Good
10,000 reviews

Comfort

7.3

Food

6.5

Crew

8.0

Entertainment

7.0

Overall

7.2

Boarding

7.6

Reviews

1 / 10

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.3

Food

6.5

Crew

8.0

Entertainment

7.0

Overall

7.2

Boarding

7.6

Reviews

1 / 10

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

Iberia
7.0
Good
2,646 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.3

Food

6.5

Crew

8.0

Entertainment

7.0

Overall

7.2

Boarding

7.6

Reviews

1 / 10

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

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 American Airlines is currently your cheapest option to San Sebastian, with prices starting at $741. Another option worth looking into is Iberia, starting at $932 round trip. American Airlines is priced at 36% 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.

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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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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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$679Average$1,097FlexibilityNo cancel feeOn-time77%
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