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$327+ Cheap flights from Basel EuroAirport Swiss (BSL) to Illinois

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — ORD
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
1 adult, Economy
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Cheap flight deals from Basel to Illinois

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$460
(American Airlines)

One-way from

$327
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$417
Provider with most accurate pricing for Basel (EAP)-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Basel (EAP)-Chicago (CHI) flights.
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From Basel EuroAirport Swiss to Illinois
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One-way flight from Basel EuroAirport Swiss to Illinois
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Highest demand for flights based on searches. 5% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 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 Basel to Illinois

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

This American Airlines deal was found by Cheapflights users on 9/29. 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 11/136:05 amBSL - ORD
1 stop14h 45mAmerican Airlines
Mon 11/178:30 amORD - BSL
2 stops23h 05mAmerican Airlines
Deal found 9/29$460
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:00 amBSL - ORD
2 stops16h 49mAmerican Airlines
Fri 10/247:15 pmORD - BSL
1 stop20h 35mAmerican Airlines
Deal found 9/30$466
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/136:35 amBSL - ORD
2 stops18h 01mAmerican Airlines
Sun 10/269:45 pmORD - BSL
1 stop18h 35mAmerican Airlines
Deal found 9/30$471
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 10/196:20 amBSL - ORD
1 stop11h 40mLufthansa
Sun 11/26:00 pmORD - BSL
1 stop11h 30mLufthansa
Deal found 9/30$533
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.
Wed 11/1910:35 amBSL - ORD
1 stop11h 45mLufthansa
Wed 12/310:35 pmORD - BSL
1 stop12h 55mLufthansa
Deal found 9/30$543
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/17:10 amBSL - ORD
2 stops16h 26mAmerican Airlines
Sat 11/86:30 pmORD - BSL
1 stop20h 20mAmerican Airlines
Deal found 10/2$571
This Billigflug 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1611:20 amBSL - STL
2 stops18h 09mMultiple Airlines
Sun 11/236:13 pmSTL - BSL
2 stops21h 07mMultiple Airlines
Deal found 10/2$589
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:00 amBSL - STL
2 stops19h 26mAmerican Airlines
Tue 10/218:04 pmSTL - BSL
2 stops19h 46mAmerican Airlines
Deal found 10/1$617
This Delta deal was found by Cheapflights users on 9/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:05 amBSL - MDW
2 stops19h 03mDelta
Mon 11/1710:47 amMDW - BSL
2 stops20h 03mDelta
Deal found 9/29$628
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:15 amBSL - STL
2 stops21h 08mDelta
Mon 10/209:10 amSTL - BSL
2 stops21h 00mDelta
Deal found 10/1$648
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:05 amBSL - MDW
2 stops19h 03mDelta
Sat 11/229:32 amMDW - BSL
2 stops18h 08mDelta
Deal found 10/1$667
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/271:10 pmBSL - STL
2 stops55h 15mUnited Airlines
Sun 11/24:43 pmSTL - BSL
2 stops19h 57mUnited Airlines
Deal found 10/1$708

Cheapflights Fare Finder

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

Fly from

Basel

Fly to

Illinois

Route

Depart

Return

Price

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Thu 11/13

6:05 am-5:00 pm

1 stop17h 55m

Chicago O'Hare Intl

Mon 11/17

6:30 pm-2:35 pm

1 stop13h 05m

$460

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Mon 10/13

6:35 am-5:36 pm

2 stops18h 01m

Chicago O'Hare Intl

Sun 10/26

9:45 pm-10:20 pm

1 stop18h 35m

$471

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Sun 10/19

6:20 am-11:00 am

1 stop11h 40m

Chicago O'Hare Intl

Sun 11/2

6:00 pm-12:30 pm

1 stop11h 30m

$533

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Wed 11/19

10:35 am-3:20 pm

1 stop11h 45m

Chicago O'Hare Intl

Wed 12/3

10:35 pm-6:30 pm

1 stop12h 55m

$543

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Sat 11/1

7:10 am-4:15 pm

1 stop15h 05m

Chicago O'Hare Intl

Sat 11/8

8:40 pm-9:50 pm

1 stop18h 10m

$561

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

Thu 2/19

11:05 am-9:44 pm

2 stops17h 39m

Lambert-St Louis

Mon 2/23

7:01 pm-6:15 pm

2 stops16h 14m

$565

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

Tue 1/13

7:00 am-7:29 pm

2 stops19h 29m

Lambert-St Louis

Tue 1/20

11:55 am-3:05 pm

2 stops20h 10m

$565

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Fri 10/17

6:00 am-9:23 pm

2 stops22h 23m

Chicago O'Hare Intl

Fri 10/24

10:11 am-11:00 am

2 stops17h 49m

$567

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

Sun 11/16

11:20 am-10:29 pm

2 stops18h 09m

Lambert-St Louis

Sun 11/23

6:13 pm-10:20 pm

2 stops21h 07m

$589

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

Fri 10/17

6:00 am-6:26 pm

2 stops19h 26m

Lambert-St Louis

Tue 10/21

8:04 pm-10:50 pm

2 stops19h 46m

$617

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/1

Showing 1-10 of 27 results
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Best time to book a flight from Basel to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Basel 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 Basel EuroAirport Swiss to Illinois
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 Basel 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 Basel to Illinois?

    For a flight from Basel to Illinois, you will be flying from EuroAirport Swiss. Basel EuroAirport Swiss (BSL) is just 3.6 mi from the center of the city.

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

    There are many flights that can get you from Basel EuroAirport Swiss to Illinois in 11h 40m. Fly via American Airlines, Lufthansa, or British Airways to get the fastest option. There are 4384 mi between Basel EuroAirport Swiss and Illinois. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Basel EuroAirport Swiss to Illinois one-way?

    $327 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on British Airways and KLM, with prices starting from $328 and $1,333, respectively.

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

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

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Basel EuroAirport Swiss to Illinois (average of $245). Flying from Basel EuroAirport Swiss 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.

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