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$496+ 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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — ORD
déc. 24 — déc. 311
mer. 12/24
mer. 12/31
1 adult, Economy
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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 novembre 24, 2025.

This American Airlines deal was found by Cheapflights users on 11/24. 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.
mer. 12/106:20 amBSL - STL
2 stops23h 46mAmerican Airlines
dim. 12/1410:56 amSTL - BSL
2 stops28h 24mAmerican Airlines
Deal found 11/24$625
This Kiwi.com deal was found by Cheapflights users on 11/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/267:05 pmBSL - ORD
1 stop23h 05mLufthansa
mer. 12/319:50 pmORD - BSL
1 stop11h 15mLufthansa
Deal found 11/23$691
This Delta deal was found by Cheapflights users on 11/23. 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.
ven. 12/266:05 amBSL - ORD
1 stop15h 15mDelta
mer. 12/311:35 pmORD - BSL
2 stops17h 15mDelta
Deal found 11/23$766
This Delta deal was found by Cheapflights users on 11/23. 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.
ven. 12/266:05 amBSL - MDW
2 stops18h 21mDelta
mer. 12/313:29 pmMDW - BSL
2 stops15h 21mDelta
Deal found 11/23$771
This Billigflug deal was found by Cheapflights users on 11/22. 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.
sam. 12/208:15 pmBSL - ORD
2 stops24h 55mLufthansa
lun. 12/299:50 pmORD - BSL
1 stop11h 15mLufthansa
Deal found 11/22$807
This United Airlines deal was found by Cheapflights users on 11/22. 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.
mar. 11/259:50 amBSL - ORD
2 stops15h 40mUnited Airlines
mar. 12/96:00 pmORD - BSL
1 stop11h 30mUnited Airlines
Deal found 11/22$871
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 12/106:45 amBSL - STL
1 stop14h 10mLufthansa
dim. 12/143:50 pmSTL - BSL
1 stop11h 05mLufthansa
Deal found 11/24$987
This Gotogate deal was found by Cheapflights users on 11/24. 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.
mer. 12/102:10 pmBSL - STL
2 stops32h 19mMultiple Airlines
dim. 12/143:50 pmSTL - BSL
1 stop19h 30mMultiple Airlines
Deal found 11/24$1,007
This American Airlines deal was found by Cheapflights users on 11/23. 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.
lun. 12/86:15 amBSL - STL
2 stops19h 28mAmerican Airlines
ven. 12/125:58 pmSTL - BSL
2 stops16h 07mAmerican Airlines
Deal found 11/23$1,008
This lastminute.com deal was found by Cheapflights users on 11/24. 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.
mar. 12/210:35 amBSL - ORD
1 stop11h 45mLufthansa
mar. 12/163:20 pmORD - BSL
1 stop11h 35mLufthansa
Deal found 11/24$1,034
This lastminute.com deal was found by Cheapflights users on 11/24. 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.
jeu. 12/46:05 pmBSL - ORD
1 stop23h 00mTurkish Airlines
dim. 12/711:50 amORD - BSL
1 stop22h 20mTurkish Airlines
Deal found 11/24$1,093
This lastminute.com deal was found by Cheapflights users on 11/22. 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.
jeu. 12/256:05 pmBSL - ORD
1 stop31h 20mTurkish Airlines
mer. 1/78:20 pmORD - BSL
1 stop30h 40mTurkish Airlines
Deal found 11/22$1,186

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 novembre 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$571
(Billigflug)

One-way from

$496
(Cheapflightsfares)

Popular in

November

Cheapest in

October

Average price

$1,064
Provider with most accurate pricing for Basel (EAP)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Basel (EAP)-Chicago (CHI) flights.
Search Deals
From Basel EuroAirport Swiss to Illinois
Search Deals
One-way flight from Basel EuroAirport Swiss to Illinois
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($130 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 novembre 24, 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

jeu. 1/29

6:05 am-3:25 pm

1 stop16h 20m

Chicago O'Hare Intl

lun. 2/2

11:44 am-6:15 pm

2 stops23h 31m

$576

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

jeu. 1/29

7:35 pm-1:50 pm

1 stop25h 15m

Chicago O'Hare Intl

lun. 2/2

5:10 pm-6:15 pm

1 stop18h 05m

$578

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

lun. 1/12

6:15 am-3:25 pm

1 stop16h 10m

Chicago O'Hare Intl

dim. 1/25

11:44 am-3:05 pm

2 stops20h 21m

$578

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

lun. 1/12

10:55 am-1:50 pm

1 stop33h 55m

Chicago O'Hare Intl

dim. 1/25

9:45 pm-10:20 pm

1 stop17h 35m

$580

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

jeu. 1/8

6:05 am-5:42 pm

2 stops18h 37m

Chicago O'Hare Intl

jeu. 1/15

9:45 pm-10:50 pm

1 stop18h 05m

$585

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

mer. 2/11

6:20 am-9:15 pm

2 stops21h 55m

Lambert-St Louis

dim. 2/15

6:33 pm-10:20 pm

2 stops20h 47m

$623

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

mar. 1/13

7:00 am-6:34 pm

2 stops18h 34m

Lambert-St Louis

mar. 1/20

3:40 pm-3:05 pm

2 stops16h 25m

$624

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

mer. 12/10

6:20 am-11:06 pm

2 stops23h 46m

Lambert-St Louis

dim. 12/14

10:56 am-10:20 pm

2 stops28h 24m

$625

BaselChicago

BSL - MDW

BSLMDW

Basel EuroAirport Swiss

lun. 1/12

5:55 pm-4:29 pm

2 stops29h 34m

Chicago Midway

dim. 1/25

1:49 pm-1:50 pm

2 stops17h 01m

$669

BaselChicago

BSL - MDW

BSLMDW

Basel EuroAirport Swiss

lun. 1/12

6:05 am-4:29 pm

2 stops17h 24m

Chicago Midway

dim. 1/25

1:26 pm-1:50 pm

2 stops17h 24m

$714

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

Showing 1-10 of 28 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

How much does it cost to fly round-trip from Basel EuroAirport Swiss to Illinois?

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 16h 20m. Fly via American Airlines, British Airways, or Air France 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 most popular routes from Basel EuroAirport Swiss to Illinois?

    Most travelers choose Basel EuroAirport Swiss - Chicago O'Hare Intl, Basel EuroAirport Swiss - Chicago Midway or Basel EuroAirport Swiss - Lambert-St Louis 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.

See more FAQs

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