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$516+ Cheap flights from Illinois to Basel (EAP)

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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — EAP
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$553
(Ticket)

One-way from

$516
(FlightHub)

Popular in

November

Cheapest in

September

Average price

$581
From Illinois to Basel (EAP)
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One-way flight from Illinois to Basel (EAP)
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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 September 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 September 17, 2025.

This Ticket deal was found by Cheapflights users on 9/17. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/207:50 pmORD - BSL
1 stop30h 50mTurkish Airlines
Tue 11/410:55 amBSL - ORD
1 stop30h 10mTurkish Airlines
Deal found 9/17$553
This lol.travel deal was found by Cheapflights users on 9/17. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/207:50 pmORD - BSL
1 stop15h 10mTurkish Airlines
Tue 10/2810:55 amBSL - ORD
1 stop30h 10mTurkish Airlines
Deal found 9/17$600
This Trip.com deal was found by Cheapflights users on 9/16. 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.
Fri 10/3112:50 pmORD - BSL
1 stop22h 20mTurkish Airlines
Fri 11/76:05 pmBSL - ORD
1 stop31h 20mTurkish Airlines
Deal found 9/16$617
This Trip.com deal was found by Cheapflights users on 9/16. 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.
Fri 10/316:43 pmSTL - BSL
2 stops15h 22mMultiple Airlines
Fri 11/76:45 amBSL - STL
1 stop14h 10mMultiple Airlines
Deal found 9/16$630
This lastminute.com deal was found by Cheapflights users on 9/16. 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.
Fri 10/316:43 pmSTL - BSL
2 stops15h 22mLufthansa
Fri 11/710:35 amBSL - STL
2 stops20h 09mLufthansa
Deal found 9/16$633
This Air Canada deal was found by Cheapflights users on 9/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/264:05 pmSTL - BSL
2 stops21h 35mMultiple Airlines
Sun 11/92:10 pmBSL - STL
2 stops32h 19mMultiple Airlines
Deal found 9/15$635
This Gotogate deal was found by Cheapflights users on 9/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/14:05 pmSTL - BSL
2 stops39h 40mMultiple Airlines
Sat 11/810:45 amBSL - STL
1 stop34h 10mMultiple Airlines
Deal found 9/17$636
This Gurufare deal was found by Cheapflights users on 9/15. 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 10/264:50 pmSTL - BSL
1 stop19h 30mLufthansa
Sun 11/96:45 amBSL - STL
1 stop14h 10mLufthansa
Deal found 9/15$638
This Trip.com deal was found by Cheapflights users on 9/17. 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.
Mon 10/204:56 pmORD - BSL
2 stops21h 09mMultiple Airlines
Tue 10/286:20 amBSL - ORD
2 stops20h 59mMultiple Airlines
Deal found 9/17$647
This FlightHub deal was found by Cheapflights users on 9/17. 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.
Tue 12/211:50 amORD - BSL
1 stop22h 20mTurkish Airlines
Fri 12/2610:55 amBSL - ORD
1 stop38h 30mTurkish Airlines
Deal found 9/17$648
This American Airlines deal was found by Cheapflights users on 9/16. 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 10/178:05 pmSTL - BSL
2 stops19h 45mAmerican Airlines
Wed 10/296:20 amBSL - STL
2 stops22h 45mAmerican Airlines
Deal found 9/16$669
This Mytrip deal was found by Cheapflights users on 9/17. 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 10/207:25 pmORD - BSL
3 stops31h 10mMultiple Airlines
Tue 11/45:55 pmBSL - ORD
3 stops30h 25mMultiple Airlines
Deal found 9/17$673

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 September 17, 2025.
Use the filters below to find and compare flights from Illinois to Basel that are best for you.

Fly from

Illinois

Fly to

Basel

Route

Depart

Return

Price

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Fri 10/31

6:43 pm-4:05 pm

2 stops15h 22m

Basel EuroAirport Swiss

Fri 11/7

6:45 am-1:55 pm

1 stop14h 10m

$630

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Fri 10/31

6:43 pm-4:05 pm

2 stops15h 22m

Basel EuroAirport Swiss

Fri 11/7

10:35 am-11:44 pm

2 stops20h 09m

$633

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sat 11/1

4:05 pm-6:20 pm

2 stops44h 15m

Basel EuroAirport Swiss

Sat 11/8

7:05 pm-3:29 pm

2 stops51h 24m

$633

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 10/26

4:05 pm-7:40 pm

2 stops21h 35m

Basel EuroAirport Swiss

Sun 11/9

2:10 pm-3:29 pm

2 stops32h 19m

$635

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 10/26

4:50 pm-6:20 pm

1 stop19h 30m

Basel EuroAirport Swiss

Sun 11/9

6:45 am-1:55 pm

1 stop14h 10m

$638

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Fri 10/17

8:05 pm-10:50 pm

2 stops19h 45m

Basel EuroAirport Swiss

Wed 10/29

6:20 am-11:05 pm

2 stops22h 45m

$669

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 11/19

11:50 am-5:10 pm

1 stop22h 20m

Basel EuroAirport Swiss

Sun 11/23

10:55 am-6:25 pm

1 stop38h 30m

$698

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 11/5

9:50 pm-4:05 pm

1 stop11h 15m

Basel EuroAirport Swiss

Wed 11/19

1:10 pm-6:25 pm

1 stop12h 15m

$752

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 1/14

9:50 pm-4:05 pm

1 stop11h 15m

Basel EuroAirport Swiss

Wed 1/28

1:10 pm-6:25 pm

1 stop12h 15m

$755

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Mon 11/10

9:50 pm-4:05 pm

1 stop11h 15m

Basel EuroAirport Swiss

Wed 11/26

1:10 pm-8:05 pm

2 stops13h 55m

$763

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 41 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
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?

    Located just 0.2 mi from the city center, Basel All airports (EAP) is the airport most travelers will use when flying to Basel from Illinois.

  • How long is the flight from Illinois to Basel?

    A quick flight from Illinois to Basel can take about 14h 28m. Lufthansa provides one of the quickest options available for as low as $991. Airlines will cover a distance of 4386 mi. This flight may include one or multiple stops.

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

    While some choose either Lambert-St Louis - Basel EuroAirport Swiss or Chicago Midway - Basel EuroAirport Swiss, Chicago O'Hare Intl - Basel EuroAirport Swiss is the most popular route from Illinois to Basel.

  • 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?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Basel (average of $545). Flying from Illinois to Basel 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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