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$342+ Cheap flights from Illinois to Basel EuroAirport Swiss (BSL)

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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BSL
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
1 adult, Economy
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Cheap flight deals from Illinois to Basel

Keep the following information in mind while searching for Illinois to Basel flight deals. Data was last updated October 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$611
(lastminute.com)

One-way from

$342
(Kiwi.com)

Popular in

November

Cheapest in

September

Average price

$1,219
Provider with most accurate pricing for Chicago (CHI)-Basel (EAP) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Basel (EAP) flights.
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From Illinois to Basel EuroAirport Swiss
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One-way flight from Illinois to Basel EuroAirport Swiss
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Highest demand for flights based on searches. 23% potential increase in price ($295 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($55 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Illinois to Basel

Cheapest flights from Illinois to Basel
Explore the most affordable flight options available from Illinois to Basel. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 2, 2025.

This lastminute.com deal was found by Cheapflights users on 10/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:50 pmORD - BSL
1 stop15h 10mTurkish Airlines
Tue 11/410:55 amBSL - ORD
1 stop30h 10mTurkish Airlines
Deal found 10/2$611
This lastminute.com deal was found by Cheapflights users on 10/1. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2211:45 pmORD - BSL
1 stop26h 55mTurkish Airlines
Wed 11/56:05 pmBSL - ORD
1 stop23h 00mTurkish Airlines
Deal found 10/1$612
This FlightHub deal was found by Cheapflights users on 10/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/511:50 amORD - BSL
1 stop15h 10mTurkish Airlines
Sun 11/910:55 amBSL - ORD
1 stop30h 10mTurkish Airlines
Deal found 10/1$619
This lastminute.com deal was found by Cheapflights users on 10/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/238:20 pmORD - BSL
1 stop30h 40mTurkish Airlines
Tue 12/910:55 amBSL - ORD
1 stop30h 10mTurkish Airlines
Deal found 10/2$624
This oojo deal was found by Cheapflights users on 10/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1311:50 amORD - BSL
1 stop15h 10mTurkish Airlines
Sat 11/2210:55 amBSL - ORD
1 stop38h 30mTurkish Airlines
Deal found 10/2$628
This Gurufare deal was found by Cheapflights users on 9/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:43 pmSTL - BSL
2 stops18h 57mLufthansa
Sun 11/96:45 amBSL - STL
1 stop14h 10mLufthansa
Deal found 9/30$649
This lastminute.com deal was found by Cheapflights users on 10/1. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:50 amORD - BSL
1 stop15h 10mTurkish Airlines
Thu 12/46:05 pmBSL - ORD
1 stop23h 00mTurkish Airlines
Deal found 10/1$670
This Mytrip deal was found by Cheapflights users on 10/1. 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 11/152:31 pmORD - BSL
3 stops25h 24mMultiple Airlines
Sat 11/221:05 pmBSL - ORD
2 stops32h 40mMultiple Airlines
Deal found 10/1$671
This oojo deal was found by Cheapflights users on 10/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/158:20 pmORD - BSL
1 stop37h 50mTurkish Airlines
Sat 11/2210:55 amBSL - ORD
1 stop30h 10mTurkish Airlines
Deal found 10/1$674
This Mytrip deal was found by Cheapflights users on 10/1. 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.
Wed 11/54:20 pmORD - BSL
2 stops16h 35mMultiple Airlines
Sun 11/99:10 pmBSL - ORD
2 stops23h 00mMultiple Airlines
Deal found 10/1$679
This lastminute.com deal was found by Cheapflights users on 9/30. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1911:25 amORD - BSL
1 stop15h 15mTurkish Airlines
Sun 11/210:55 amBSL - ORD
1 stop30h 10mTurkish Airlines
Deal found 9/30$683
This oojo deal was found by Cheapflights users on 10/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/267:54 pmSTL - BSL
2 stops20h 26mBritish Airways
Sun 11/96:50 pmBSL - STL
2 stops33h 10mBritish Airways
Deal found 10/1$715

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Basel 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 2, 2025.
Use the filters below to find and compare flights from Illinois to Basel EuroAirport Swiss that are best for you.

Fly from

Illinois

Fly to

Basel

Route

Depart

Return

Price

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 10/22

11:45 pm-9:40 am

1 stop26h 55m

Basel EuroAirport Swiss

Wed 11/5

6:05 pm-10:05 am

1 stop23h 00m

$612

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 3/4

8:20 pm-10:00 am

1 stop30h 40m

Basel EuroAirport Swiss

Wed 3/18

6:05 pm-11:05 am

1 stop23h 00m

$622

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Sun 11/23

8:20 pm-10:00 am

1 stop30h 40m

Basel EuroAirport Swiss

Tue 12/9

10:55 am-10:05 am

1 stop30h 10m

$624

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Fri 3/27

3:15 pm-4:05 pm

2 stops18h 50m

Basel EuroAirport Swiss

Tue 3/31

11:10 am-3:24 pm

2 stops35h 14m

$641

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 10/26

6:43 pm-7:40 pm

2 stops18h 57m

Basel EuroAirport Swiss

Sun 11/9

6:45 am-1:55 pm

1 stop14h 10m

$649

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Fri 3/27

4:50 pm-1:35 pm

1 stop14h 45m

Basel EuroAirport Swiss

Tue 3/31

6:05 am-7:48 pm

2 stops20h 43m

$654

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Thu 11/20

11:50 am-10:00 am

1 stop15h 10m

Basel EuroAirport Swiss

Thu 12/4

6:05 pm-10:05 am

1 stop23h 00m

$670

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Sat 11/15

2:31 pm-10:55 pm

3 stops25h 24m

Basel EuroAirport Swiss

Sat 11/22

1:05 pm-2:45 pm

2 stops32h 40m

$671

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Sat 11/15

8:20 pm-5:10 pm

1 stop37h 50m

Basel EuroAirport Swiss

Sat 11/22

10:55 am-10:05 am

1 stop30h 10m

$674

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Sun 11/2

8:20 pm-10:00 am

1 stop30h 40m

Basel EuroAirport Swiss

Sun 11/16

6:05 pm-6:25 pm

1 stop31h 20m

$685

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/30

Showing 1-10 of 47 results
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Best time to book a flight from Illinois to Basel

Have a flexible travel schedule? Discover the best time to fly to Basel 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 Basel EuroAirport Swiss
No data available for this route at this time. Please check back soon.

Related info for your journey

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

    If you book a flight to Basel from Illinois, you will be flying to EuroAirport Swiss, which is the city’s only airport. Basel EuroAirport Swiss (BSL) is located 3.6 mi from the center of Basel.

  • How long is the flight from Illinois to Basel EuroAirport Swiss?

    Turkish Airlines, United Airlines, and Lufthansa can get you from Illinois to Basel EuroAirport Swiss in just under 18h 50m. Your travel time can differ by up to 8h 05m. There are 4630 mi between Illinois and Basel EuroAirport Swiss. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Illinois to Basel EuroAirport Swiss?

    Most travelers choose Chicago O'Hare Intl - Basel EuroAirport Swiss, Lambert-St Louis - Basel EuroAirport Swiss or Chicago Midway - Basel EuroAirport Swiss when deciding on the best route from Illinois to Basel EuroAirport Swiss.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Basel 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 Basel EuroAirport Swiss?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Basel EuroAirport Swiss (average of $545). Flying from Illinois to Basel EuroAirport Swiss in June is currently the most expensive (average of $1,132). 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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