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Santander

$675+ Cheap flights from Illinois to Santander (SDR)

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SDR
Nov 20 — Nov 271
Thu 11/20
Thu 11/27
1 adult, Economy
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Find flight deals from Illinois to Santander

Cheapest flights from Illinois to Santander
Explore the most affordable flight options available from Illinois to Santander. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 21, 2025.

This Expedia deal was found by Cheapflights users on 10/19. 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.
Thu 12/48:35 pmORD - SDR
2 stops29h 15mIberia
Thu 12/116:30 amSDR - ORD
1 stop15h 00mIberia
Deal found 10/19$675
This Iberia deal was found by Cheapflights users on 10/20. 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.
Wed 12/35:40 pmORD - SDR
1 stop20h 20mIberia
Sun 12/79:25 amSDR - ORD
1 stop12h 30mIberia
Deal found 10/20$806
This Mytrip deal was found by Cheapflights users on 10/19. 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.
Thu 12/47:20 pmORD - SDR
3 stops29h 50mMultiple Airlines
Thu 12/115:30 pmSDR - ORD
2 stops28h 55mMultiple Airlines
Deal found 10/19$847

Cheap flight deals from Illinois to Santander

Keep the following information in mind while searching for Illinois to Santander flight deals. Data was last updated October 21, 2025.

Round-trip from

$675
(Expedia)
From Illinois to Santander
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Santander 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 October 21, 2025.
Use the filters below to find and compare flights from Illinois to Santander that are best for you.

Fly from

Illinois

Fly to

Santander

Route

Depart

Return

Price

ChicagoSantander

ORD - SDR

ORDSDR

Chicago O'Hare Intl

Thu 12/4

8:35 pm-8:50 am

2 stops29h 15m

Santander

Thu 12/11

9:00 am-7:45 pm

2 stops17h 45m

$685

ChicagoSantander

ORD - SDR

ORDSDR

Chicago O'Hare Intl

Wed 12/3

5:40 pm-9:00 pm

1 stop20h 20m

Santander

Sun 12/7

9:25 am-2:55 pm

1 stop12h 30m

$806

ChicagoSantander

ORD - SDR

ORDSDR

Chicago O'Hare Intl

Thu 12/4

7:20 pm-8:10 am

3 stops29h 50m

Santander

Thu 12/11

5:30 pm-3:25 pm

2 stops28h 55m

$847

ChicagoSantander

ORD - SDR

ORDSDR

Chicago O'Hare Intl

Fri 3/13

1:10 pm-8:50 am

2 stops13h 40m

$831

ChicagoSantander

ORD - SDR

ORDSDR

Chicago O'Hare Intl

Thu 3/12

1:10 pm-8:20 am

2 stops13h 10m

$831

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Best time to book a flight from Illinois to Santander

Have a flexible travel schedule? Discover the best time to fly to Santander 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 Santander

What is the cheapest month to book a flight from Illinois to Santander?

Currently, August is the cheapest month in which you can book a flight from Illinois to Santander (average of $547). Flying from Illinois to Santander in July is currently the most expensive (average of $871). 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.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Santander. 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 Santander from Illinois?

    Located just 2.5 mi from the city center, Santander (SDR) is the airport most travelers will use when flying to Santander from Illinois.

  • How long is the flight from Illinois to Santander?

    Departing from Illinois to Santander will take you 29h 15m. Illinois and Santander are separated by a distance of 4072 mi.

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

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

  • How can I find direct flights from Illinois to Santander?

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

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

    Yes. Cheapflights offers flight deals from Illinois to Santander 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 Illinois to Santander?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Santander (average of $547). Flying from Illinois to Santander in July is currently the most expensive (average of $871). 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

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Alternative routes for Illinois to Santander

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