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San Sebastian

$766+ Cheap flights from Illinois 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — EAS
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$766
(Iberia)

Popular in

December

Cheapest in

January

Average price

$1,224
From Illinois to San Sebastián
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($76 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 31, 2025.

This Iberia deal was found by Cheapflights users on 7/30. 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 11/73:08 pmORD - EAS
2 stops14h 52mIberia
Tue 11/119:30 pmEAS - ORD
2 stops27h 08mIberia
Deal found 7/30$766
This Iberia deal was found by Cheapflights users on 7/30. 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 11/711:39 amSTL - EAS
2 stops18h 21mIberia
Tue 11/119:20 amEAS - STL
2 stops18h 03mIberia
Deal found 7/30$769
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:20 pmORD - EAS
2 stops18h 30mMultiple Airlines
Sun 11/309:20 amEAS - ORD
2 stops38h 25mMultiple Airlines
Deal found 7/31$836
This American Airlines deal was found by Cheapflights users on 7/30. 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 11/78:30 amORD - EAS
2 stops21h 30mAmerican Airlines
Tue 11/111:40 pmEAS - ORD
1 stop31h 50mAmerican Airlines
Deal found 7/30$931
This American Airlines deal was found by Cheapflights users on 7/29. 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 11/711:51 amSTL - EAS
2 stops18h 09mAmerican Airlines
Tue 11/119:20 amEAS - STL
2 stops18h 03mAmerican Airlines
Deal found 7/29$1,006
This AranGrant deal was found by Cheapflights users on 7/30. 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.
Sun 9/147:15 pmORD - EAS
2 stops18h 35mBritish Airways
Sun 9/211:40 pmEAS - ORD
2 stops29h 10mBritish Airways
Deal found 7/30$1,819
This Mytrip deal was found by Cheapflights users on 7/31. 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.
Sat 8/301:30 pmSTL - EAS
3 stops35h 40mMultiple Airlines
Sat 9/68:55 amEAS - STL
3 stops35h 35mMultiple Airlines
Deal found 7/31$2,922

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 July 31, 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

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Fri 11/7

3:08 pm-1:00 pm

2 stops14h 52m

San Sebastián

Tue 11/11

9:30 pm-5:38 pm

2 stops27h 08m

$766

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Fri 11/7

11:39 am-1:00 pm

2 stops18h 21m

San Sebastián

Tue 11/11

9:20 am-8:23 pm

2 stops18h 03m

$769

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Thu 11/20

7:20 pm-8:50 pm

2 stops18h 30m

San Sebastián

Sun 11/30

9:20 am-4:45 pm

2 stops38h 25m

$836

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Fri 11/7

8:30 am-1:00 pm

2 stops21h 30m

San Sebastián

Tue 11/11

1:40 pm-2:30 pm

1 stop31h 50m

$931

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Fri 11/7

11:51 am-1:00 pm

2 stops18h 09m

San Sebastián

Tue 11/11

9:20 am-8:23 pm

2 stops18h 03m

$1,006

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Sun 9/14

7:15 pm-8:50 pm

2 stops18h 35m

San Sebastián

Sun 9/21

1:40 pm-11:50 am

2 stops29h 10m

$1,819

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Sat 8/30

1:30 pm-8:10 am

3 stops35h 40m

San Sebastián

Sat 9/6

8:55 am-1:30 pm

3 stops35h 35m

$2,922

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 July 31, 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 July 31, 2025.
Get a feel of what it's like to fly with American Airlines, Iberia, and British Airways from Illinois to San Sebastian by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Boarding

7.5

Food

6.5

Crew

8.0

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Boarding

7.5

Food

6.5

Crew

8.0

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.
Iberia
7.0
Good
2,859 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Boarding

7.5

Food

6.5

Crew

8.0

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.
British Airways
6.6
Okay
7,222 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Boarding

7.5

Food

6.5

Crew

8.0

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Leonardo,May 2025

JFK - BGI

Good airline and so far i give them 8 out of 10.

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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