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$247+ 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BSL
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
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 January 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$486
(oojo)

One-way from

$247
(Kiwi.com)
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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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 January 8, 2026.

This oojo deal was found by Cheapflights users on 1/7. 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 2/212:25 pmSTL - BSL
2 stops20h 40mBritish Airways
Sat 2/2811:10 amBSL - STL
2 stops19h 12mBritish Airways
Deal found 1/7$486
This Mytrip deal was found by Cheapflights users on 1/7. 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 2/214:05 pmSTL - BSL
2 stops19h 10mMultiple Airlines
Sat 2/287:05 pmBSL - STL
1 stop25h 50mMultiple Airlines
Deal found 1/7$501
This Expedia deal was found by Cheapflights users on 1/7. 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.
Wed 3/184:05 pmSTL - BSL
2 stops21h 35mMultiple Airlines
Sun 3/227:00 pmBSL - STL
2 stops50h 29mMultiple Airlines
Deal found 1/7$521
This United Airlines deal was found by Cheapflights users on 1/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/236:40 pmSTL - BSL
2 stops14h 25mUnited Airlines
Tue 1/279:50 amBSL - STL
2 stops20h 08mUnited Airlines
Deal found 1/7$550
This oojo deal was found by Cheapflights users on 1/6. 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.
Mon 1/2611:50 amORD - BSL
1 stop15h 10mTurkish Airlines
Wed 2/116:05 pmBSL - ORD
1 stop23h 00mTurkish Airlines
Deal found 1/6$575
This lastminute.com deal was found by Cheapflights users on 1/6. 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 1/288:20 pmORD - BSL
1 stop30h 40mTurkish Airlines
Wed 2/116:05 pmBSL - ORD
1 stop23h 00mTurkish Airlines
Deal found 1/6$597
This lastminute.com deal was found by Cheapflights users on 1/6. 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 11/39:20 pmORD - BSL
1 stop29h 40mTurkish Airlines
Tue 11/1710:55 amBSL - ORD
1 stop30h 10mTurkish Airlines
Deal found 1/6$602
This lastminute.com deal was found by Cheapflights users on 1/6. 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 2/2611:50 amORD - BSL
1 stop15h 10mTurkish Airlines
Thu 3/1210:55 amBSL - ORD
1 stop30h 10mTurkish Airlines
Deal found 1/6$605
This oojo deal was found by Cheapflights users on 1/6. 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.
Fri 2/208:20 pmORD - BSL
1 stop37h 50mTurkish Airlines
Fri 2/2710:55 amBSL - ORD
1 stop30h 10mTurkish Airlines
Deal found 1/6$611
This KAYAK deal was found by Cheapflights users on 1/6. 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.
Tue 1/2711:50 amORD - BSL
1 stop22h 20mTurkish Airlines
Wed 2/116:05 pmBSL - ORD
1 stop23h 00mTurkish Airlines
Deal found 1/6$615
This lastminute.com deal was found by Cheapflights users on 1/7. 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 1/2911:50 amORD - BSL
1 stop15h 10mTurkish Airlines
Thu 2/1210:55 amBSL - ORD
1 stop38h 30mTurkish Airlines
Deal found 1/7$616
This lastminute.com deal was found by Cheapflights users on 1/7. 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 1/2211:50 amORD - BSL
1 stop15h 10mTurkish Airlines
Thu 2/510:55 amBSL - ORD
1 stop38h 30mTurkish Airlines
Deal found 1/7$627

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 January 8, 2026.
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

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sat 2/21

2:25 pm-6:05 pm

2 stops20h 40m

Basel EuroAirport Swiss

Sat 2/28

11:10 am-11:22 pm

2 stops19h 12m

$486

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sat 2/21

4:05 pm-6:15 pm

2 stops19h 10m

Basel EuroAirport Swiss

Sat 2/28

7:05 pm-1:55 pm

1 stop25h 50m

$501

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Wed 3/18

4:05 pm-7:40 pm

2 stops21h 35m

Basel EuroAirport Swiss

Sun 3/22

7:00 pm-3:29 pm

2 stops50h 29m

$521

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Fri 1/23

9:57 am-4:05 pm

2 stops23h 08m

Basel EuroAirport Swiss

Tue 1/27

9:50 am-2:30 pm

2 stops35h 40m

$550

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Mon 2/16

11:50 am-10:00 am

1 stop15h 10m

Basel EuroAirport Swiss

Wed 2/25

6:05 pm-6:25 pm

1 stop31h 20m

$575

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Fri 2/20

8:20 pm-5:10 pm

1 stop37h 50m

Basel EuroAirport Swiss

Fri 2/27

10:55 am-10:05 am

1 stop30h 10m

$611

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Thu 1/29

11:50 am-10:00 am

1 stop15h 10m

Basel EuroAirport Swiss

Thu 2/12

10:55 am-6:25 pm

1 stop38h 30m

$616

ChampaignBasel

CMI - BSL

CMIBSL

Champaign University-Willard

Wed 1/28

11:24 am-6:40 pm

2 stops24h 16m

Basel EuroAirport Swiss

Sun 2/1

6:50 pm-8:27 pm

2 stops32h 37m

$628

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Fri 4/3

8:10 pm-6:15 pm

1 stop15h 05m

Basel EuroAirport Swiss

Sun 4/12

7:10 pm-9:40 am

1 stop21h 30m

$665

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Sat 2/21

11:50 am-10:00 am

1 stop15h 10m

Basel EuroAirport Swiss

Sat 2/28

10:55 am-10:05 am

1 stop30h 10m

$668

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 39 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?

    British Airways, United Airlines, and Turkish Airlines can get you from Illinois to Basel EuroAirport Swiss in just under 15h 10m. Your travel time can differ by up to 7h 58m. There are 4384 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.

See more FAQs

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