HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$647+ Cheap flights from San Sebastian (EAS) to Illinois

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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
EAS — ORD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Sebastian to Illinois with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from San Sebastian to Illinois

Keep the following information in mind while searching for San Sebastian to Illinois flight deals. Data was last updated February 20, 2025.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$647
(Iberia)
Provider with most accurate pricing for San Sebastián-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Sebastián-Chicago (CHI) flights.
Search Deals
From San Sebastián to Illinois
Search Deals

Find flight deals from San Sebastian to Illinois

Cheapest flights from San Sebastian to Illinois
Explore the most affordable flight options available from San Sebastian to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Iberia deal was found by Cheapflights users on 2/20. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/199:30 pmEAS - ORD
1 stop28h 15mIberia
Tue 8/2611:45 amORD - EAS
2 stops13h 55mIberia
Deal found 2/20$647
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/195:55 pmEAS - ORD
3 stops36h 15mMultiple Airlines
Tue 8/267:25 pmORD - EAS
3 stops30h 05mMultiple Airlines
Deal found 2/20$859
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Thu 4/109:20 amEAS - ORD
2 stops21h 29mAmerican Airlines
Thu 4/248:05 amORD - EAS
2 stops17h 35mAmerican Airlines
Deal found 2/20$1,074

Find flights from San Sebastian to Illinois within your budget

Customize your flight search to find flights from San Sebastian to Illinois 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 20, 2025.

Fly from

San Sebastian

Fly to

Illinois

Route

Depart

Return

Price

San SebastianChicago

EAS - ORD

EASORD

San Sebastián

Mon 5/19

9:30 pm-6:45 pm

1 stop28h 15m

Chicago O'Hare Intl

Tue 8/26

11:45 am-8:40 am

2 stops13h 55m

$647

San SebastianChicago

EAS - ORD

EASORD

San Sebastián

Mon 5/19

5:55 pm-11:10 pm

3 stops36h 15m

Chicago O'Hare Intl

Tue 8/26

7:25 pm-8:30 am

3 stops30h 05m

$859

San SebastianChicago

EAS - ORD

EASORD

San Sebastián

Thu 4/10

9:20 am-11:49 pm

2 stops21h 29m

Chicago O'Hare Intl

Thu 4/24

8:05 am-8:40 am

2 stops17h 35m

$1,074

San SebastianChicago

EAS - ORD

EASORD

San Sebastián

Sat 4/26

9:30 pm-1:15 pm

2 stops22h 45m

$666

San SebastianChicago

EAS - ORD

EASORD

San Sebastián

Sat 4/26

9:30 pm-1:30 pm

2 stops47h 00m

$831

San SebastianChicago

EAS - ORD

EASORD

San Sebastián

Fri 4/25

9:20 am-2:15 pm

1 stop11h 55m

$925

San SebastianChicago

EAS - ORD

EASORD

San Sebastián

Sat 7/19

8:55 am-9:15 pm

3 stops19h 20m

$934

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Best time to book a flight from San Sebastian to Illinois

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

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

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated February 20, 2025.
American Airlines
7.2
Good
10,000 reviews

Food

6.5

Overall

7.2

Comfort

7.3

Crew

8.0

Entertainment

7.0

Boarding

7.5

Reviews

1 / 20

2.0
Mediocre

Anonymous,Oct 2024

LAX - ORD

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap

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

Food

6.5

Overall

7.2

Comfort

7.3

Crew

8.0

Entertainment

7.0

Boarding

7.5

Reviews

1 / 20

2.0
Mediocre

Anonymous,Oct 2024

LAX - ORD

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap

Iberia
7.0
Good
2,639 reviews
American Airlines
7.2
Good
10,000 reviews

Food

6.5

Overall

7.2

Comfort

7.3

Crew

8.0

Entertainment

7.0

Boarding

7.5

Reviews

1 / 20

2.0
Mediocre

Anonymous,Oct 2024

LAX - ORD

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap

Avianca
6.8
Okay
2,435 reviews
American Airlines
7.2
Good
10,000 reviews

Food

6.5

Overall

7.2

Comfort

7.3

Crew

8.0

Entertainment

7.0

Boarding

7.5

Reviews

1 / 20

2.0
Mediocre

Anonymous,Oct 2024

LAX - ORD

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap

Related info for your journey

Find useful and relevant information for your journey from San Sebastian to Illinois. 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 from for flights from San Sebastian to Illinois?

    If you book a flight to Illinois from San Sebastian, you will be flying from San Sebastián, which is the city’s only airport. San Sebastián (EAS) is located 9.7 mi from the center of San Sebastian.

  • What are the cheapest airlines to fly from San Sebastian to Illinois one-way?

    To fly one-way, consider booking your trip with Avianca, which is currently one of the cheapest options available, starting at $666. Iberia flights start at $831 while deals on American Airlines start at $925 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Sebastian to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Sebastian to Illinois?

    Currently, August is the cheapest month in which you can book a flight from San Sebastian to Illinois (average of $245). Flying from San Sebastian to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Sebastian to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Bilbao to Newark flights
Bilbao to John F Kennedy Intl flights
Bilbao to Los Angeles flights
Bilbao to Seattle flights
Bilbao to Miami flights
Bilbao to San Francisco flights
San Sebastian to John F Kennedy Intl flights
Bilbao to Las Vegas flights
Bilbao to Fort Lauderdale flights
Bilbao to Dulles Intl flights
Bilbao to Denver flights
Bilbao to West Palm Beach flights
San Sebastian to San Francisco flights
Bilbao to Baltimore flights
Bilbao to San Diego flights
Bilbao to Boston flights
Bilbao to Hobby flights
Bilbao to Boise flights
Bilbao to George Bush Intcntl flights
Bilbao to Orlando flights
San Sebastian to Miami flights
Bilbao to Pittsburgh flights
Bilbao to Honolulu flights
Bilbao to San Jose flights
Bilbao to Atlanta flights
Bilbao to O'Hare Intl flights
San Sebastian to West Palm Beach flights
Bilbao to Dallas/Fort Worth flights
Bilbao to Santa Ana flights
Bilbao to Austin flights
Bilbao to St. Louis flights
Bilbao to Minneapolis flights
Bilbao to Salt Lake City flights
San Sebastian to Boston flights
Bilbao to New Orleans flights
San Sebastian to Dulles Intl flights
Bilbao to Jacksonville flights
Bilbao to Anchorage flights
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.