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San Sebastian

$245+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — EAS
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
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 septiembre 16, 2025.

Round-trip from

$651
(Expedia)

One-way from

$245
(Kiwi.com)
From Illinois to San Sebastián
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One-way flight from Illinois to San Sebastián
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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 septiembre 16, 2025.

This Expedia deal was found by Cheapflights users on 9/14. 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.
mié. 10/299:43 amSTL - EAS
2 stops40h 57mIberia
mié. 11/59:30 pmEAS - STL
2 stops30h 25mIberia
Deal found 9/14$651
This American Airlines deal was found by Cheapflights users on 9/13. 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.
vie. 11/74:45 pmORD - EAS
1 stop21h 05mAmerican Airlines
mar. 11/111:40 pmEAS - ORD
1 stop31h 50mAmerican Airlines
Deal found 9/13$807
This American Airlines deal was found by Cheapflights users on 9/13. 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.
vie. 11/78:39 amSTL - EAS
2 stops29h 11mAmerican Airlines
mar. 11/119:20 amEAS - STL
2 stops20h 07mAmerican Airlines
Deal found 9/13$881
This KAYAK deal was found by Cheapflights users on 9/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/204:30 pmORD - EAS
1 stop13h 30mIberia
lun. 11/39:20 amEAS - ORD
1 stop12h 10mIberia
Deal found 9/16$920
This Ovago deal was found by Cheapflights users on 9/13. 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.
mar. 10/2110:30 pmORD - EAS
1 stop27h 10mMultiple Airlines
dom. 10/269:20 amEAS - ORD
2 stops20h 33mMultiple Airlines
Deal found 9/13$970
This Orbitz deal was found by Cheapflights users on 9/14. 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.
vie. 11/218:40 pmORD - EAS
2 stops17h 10mMultiple Airlines
dom. 11/309:30 pmEAS - ORD
2 stops47h 20mMultiple Airlines
Deal found 9/14$979
This Ovago deal was found by Cheapflights users on 9/15. 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.
mar. 11/254:45 pmORD - EAS
1 stop32h 55mMultiple Airlines
dom. 11/309:30 pmEAS - ORD
2 stops28h 15mMultiple Airlines
Deal found 9/15$1,082
This Iberia deal was found by Cheapflights users on 9/15. 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.
mar. 11/254:45 pmORD - EAS
1 stop13h 15mIberia
dom. 11/309:30 pmEAS - ORD
1 stop24h 00mIberia
Deal found 9/15$1,106
This Priceline deal was found by Cheapflights users on 9/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/214:30 pmORD - EAS
1 stop13h 30mIberia
dom. 10/269:20 amEAS - ORD
1 stop12h 10mIberia
Deal found 9/13$1,111

Cheapflights Fare Finder

 
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 septiembre 16, 2025.
Use the filters below to find and compare flights from Illinois to San Sebastian that are best for you.

Fly from

Illinois

Fly to

San Sebastian

Route

Depart

Return

Price

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

mié. 10/29

9:43 am-8:40 am

2 stops40h 57m

San Sebastián

mié. 11/5

9:30 pm-8:55 pm

2 stops30h 25m

$651

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

sáb. 2/7

11:58 am-8:40 am

2 stops37h 42m

San Sebastián

dom. 2/15

9:30 pm-8:44 am

2 stops42h 14m

$744

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

vie. 11/7

4:45 pm-1:00 pm

1 stop13h 15m

San Sebastián

mar. 11/11

1:40 pm-9:05 am

2 stops26h 25m

$807

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

vie. 11/7

8:39 am-8:50 pm

2 stops29h 11m

San Sebastián

mar. 11/11

9:20 am-10:27 pm

2 stops20h 07m

$881

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

lun. 10/20

4:30 pm-1:00 pm

1 stop13h 30m

San Sebastián

lun. 11/3

9:20 am-2:30 pm

1 stop12h 10m

$920

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

sáb. 2/7

5:23 am-8:40 am

2 stops20h 17m

San Sebastián

dom. 2/15

9:20 am-5:56 pm

2 stops15h 36m

$944

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

mar. 10/21

10:30 pm-8:40 am

1 stop27h 10m

San Sebastián

dom. 10/26

9:20 am-11:53 pm

2 stops20h 33m

$970

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

mar. 11/25

4:45 pm-8:40 am

1 stop32h 55m

San Sebastián

dom. 11/30

9:30 pm-6:45 pm

2 stops28h 15m

$1,082

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

dom. 10/19

6:00 pm-8:40 am

2 stops31h 40m

$245

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

vie. 10/17

6:40 am-8:50 am

3 stops43h 10m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 17 results
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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.

Cheapflights Insights

Everything you need to know about your flight from Illinois to San Sebastian

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 septiembre 16, 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.

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.

  • How long is the flight from Illinois to San Sebastian?

    For as low as $807, Iberia can have you in San Sebastian from Illinois in 13h 15m. The distance from Illinois to San Sebastian is about 4162 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 septiembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$694Average$1,754FlexibilityNo cancel feeOn-time71%

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