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San Sebastian

$667+ Cheap flights from Illinois 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — EAS
Feb 28 — Mar 71
Fri 2/28
Fri 3/7
1 adult, Economy
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Cheap flight deals from Illinois to San Sebastian

Keep the following information in mind while searching for Illinois to San Sebastian flight deals. Data was last updated February 23, 2025.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$739
(Mytrip)

One-way from

$667
(Iberia)

Popular in

December

Cheapest in

January

Average price

$863
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 Illinois to San Sebastián
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One-way flight from Illinois to San Sebastián
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 7% potential price decrease ($75 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Illinois to San Sebastian

Cheapest flights from Illinois to San Sebastian
Explore the most affordable flight options available from Illinois to San Sebastian. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 23, 2025.

This Mytrip deal was found by Cheapflights users on 2/22. 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.
Tue 4/82:05 pmORD - EAS
2 stops20h 15mMultiple Airlines
Tue 4/155:55 pmEAS - ORD
2 stops32h 35mMultiple Airlines
Deal found 2/22$739
This Iberia deal was found by Cheapflights users on 2/23. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2210:10 pmORD - EAS
1 stop27h 30mIberia
Tue 4/299:20 amEAS - ORD
1 stop11h 55mIberia
Deal found 2/23$784
This American Airlines deal was found by Cheapflights users on 2/23. 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.
Tue 4/227:00 amORD - EAS
2 stops18h 40mAmerican Airlines
Tue 4/299:20 amEAS - ORD
2 stops17h 14mAmerican Airlines
Deal found 2/23$987
This Expedia deal was found by Cheapflights users on 2/22. 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.
Wed 4/233:29 pmSTL - EAS
2 stops34h 11mIberia
Sun 4/279:30 pmEAS - STL
2 stops30h 28mIberia
Deal found 2/22$1,114
This SmartFares deal was found by Cheapflights users on 2/23. 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.
Tue 5/272:35 pmORD - EAS
2 stops35h 05mAvianca
Wed 6/49:30 pmEAS - ORD
2 stops22h 45mAvianca
Deal found 2/23$1,369
This AranGrant deal was found by Cheapflights users on 2/22. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/216:36 pmORD - EAS
2 stops39h 34mBritish Airways
Sun 3/305:00 pmEAS - ORD
2 stops33h 13mBritish Airways
Deal found 2/22$1,853
This StudentUniverse deal was found by Cheapflights users on 2/22. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/233:30 pmSTL - EAS
2 stops22h 20mMultiple Airlines
Sun 4/275:00 pmEAS - STL
3 stops29h 47mMultiple Airlines
Deal found 2/22$6,785

Find flights from Illinois to San Sebastian within your budget

Customize your flight search to find flights from Illinois 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 February 23, 2025.

Fly from

Illinois

Fly to

San Sebastian

Route

Depart

Return

Price

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Tue 4/8

2:05 pm-5:20 pm

2 stops20h 15m

San Sebastián

Tue 4/15

5:55 pm-7:30 pm

2 stops32h 35m

$739

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Tue 4/22

10:10 pm-8:40 am

1 stop27h 30m

San Sebastián

Tue 4/29

9:20 am-2:15 pm

1 stop11h 55m

$784

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Tue 4/22

7:00 am-8:40 am

2 stops18h 40m

San Sebastián

Tue 4/29

9:20 am-7:34 pm

2 stops17h 14m

$987

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Wed 4/23

3:29 pm-8:40 am

2 stops34h 11m

San Sebastián

Sun 4/27

9:30 pm-8:58 pm

2 stops30h 28m

$1,114

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Tue 5/27

2:35 pm-8:40 am

2 stops35h 05m

San Sebastián

Wed 6/4

9:30 pm-1:15 pm

2 stops22h 45m

$1,369

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Fri 3/21

6:36 pm-4:10 pm

2 stops39h 34m

San Sebastián

Sun 3/30

5:00 pm-7:13 pm

2 stops33h 13m

$1,853

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Wed 4/23

3:30 pm-8:50 pm

2 stops22h 20m

San Sebastián

Sun 4/27

5:00 pm-3:47 pm

3 stops29h 47m

$6,785

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Wed 5/14

4:30 pm-8:50 pm

1 stop21h 20m

$667

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Best time to book a flight from Illinois to San Sebastian

Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Illinois 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 Illinois to San Sebastian

Get recent, data-driven insights about flights from Illinois to San Sebastian including ideal travel times, pricing trends, and more.

What is the cheapest time of day to fly from IL to EAS?

Find hourly flight availability from Illinois to San Sebastian. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 23, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to San Sebastian as you normally would.

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 February 23, 2025.
American Airlines
7.2
Good
10,000 reviews

Entertainment

7.0

Boarding

7.5

Food

6.5

Overall

7.2

Crew

8.0

Comfort

7.3

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

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

Entertainment

7.0

Boarding

7.5

Food

6.5

Overall

7.2

Crew

8.0

Comfort

7.3

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

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
2,639 reviews
American Airlines
7.2
Good
10,000 reviews

Entertainment

7.0

Boarding

7.5

Food

6.5

Overall

7.2

Crew

8.0

Comfort

7.3

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

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.

Avianca
6.8
Okay
2,425 reviews
American Airlines
7.2
Good
10,000 reviews

Entertainment

7.0

Boarding

7.5

Food

6.5

Overall

7.2

Crew

8.0

Comfort

7.3

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

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.

British Airways
6.6
Okay
6,754 reviews
American Airlines
7.2
Good
10,000 reviews

Entertainment

7.0

Boarding

7.5

Food

6.5

Overall

7.2

Crew

8.0

Comfort

7.3

Reviews

1 / 20

10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

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 Illinois 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 Illinois?

    San Sebastián (EAS), located 9.7 mi from the city center, is the airport you fly into when you book flights from Illinois to San Sebastian.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois 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 Illinois to San Sebastian

Discover the top airline that operate flights from Illinois 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 February 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$679Average$1,123FlexibilityNo cancel feeOn-time77%
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