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$402+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — ORD
Feb 10 — Feb 171
Tue 2/10
Tue 2/17
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 January 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$483
(American Airlines)

One-way from

$402
(Kiwi.com)

Popular in

November

Cheapest in

May

Average price

$460
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. 12% potential increase in price ($92 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 11, 2026.

This American Airlines deal was found by Cheapflights users on 1/10. 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 2/196:05 amBSL - ORD
1 stop17h 55mAmerican Airlines
Sun 2/221:39 pmORD - BSL
2 stops18h 26mAmerican Airlines
Deal found 1/10$483
This American Airlines deal was found by Cheapflights users on 1/11. 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 3/137:00 amBSL - ORD
1 stop15h 25mAmerican Airlines
Wed 3/187:40 pmORD - BSL
1 stop13h 15mAmerican Airlines
Deal found 1/11$484
This American Airlines deal was found by Cheapflights users on 1/9. 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.
Wed 6/1711:50 amBSL - ORD
1 stop31h 40mAmerican Airlines
Thu 7/165:43 pmORD - BSL
2 stops22h 07mAmerican Airlines
Deal found 1/9$485
This British Airways deal was found by Cheapflights users on 1/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/196:00 amBSL - ORD
1 stop13h 30mBritish Airways
Tue 7/1411:51 amORD - BSL
2 stops24h 04mBritish Airways
Deal found 1/9$487
This Billigflug deal was found by Cheapflights users on 1/10. 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.
Sat 1/177:10 amBSL - ORD
2 stops17h 37mMultiple Airlines
Fri 1/304:14 pmORD - BSL
2 stops14h 56mMultiple Airlines
Deal found 1/10$488
This American Airlines deal was found by Cheapflights users on 1/9. 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.
Sun 6/147:05 amBSL - ORD
2 stops31h 09mAmerican Airlines
Mon 7/138:45 pmORD - BSL
1 stop19h 05mAmerican Airlines
Deal found 1/9$491
This British Airways deal was found by Cheapflights users on 1/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/156:40 amBSL - ORD
2 stops33h 30mBritish Airways
Fri 7/175:34 pmORD - BSL
2 stops22h 16mBritish Airways
Deal found 1/9$492
This Iberia deal was found by Cheapflights users on 1/9. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/167:00 amBSL - ORD
2 stops17h 42mMultiple Airlines
Thu 1/2911:44 amORD - BSL
2 stops20h 21mMultiple Airlines
Deal found 1/9$493
This American Airlines deal was found by Cheapflights users on 1/11. 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 5/306:35 amBSL - ORD
1 stop12h 55mAmerican Airlines
Mon 6/15:00 pmORD - BSL
1 stop11h 00mAmerican Airlines
Deal found 1/11$509
This American Airlines deal was found by Cheapflights users on 1/9. 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 6/206:35 amBSL - ORD
2 stops21h 36mAmerican Airlines
Fri 7/176:20 pmORD - BSL
1 stop21h 30mAmerican Airlines
Deal found 1/9$516
This American Airlines deal was found by Cheapflights users on 1/8. 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.
Wed 9/211:50 amBSL - STL
1 stop14h 40mAmerican Airlines
Sun 9/65:46 pmSTL - BSL
2 stops22h 04mAmerican Airlines
Deal found 1/8$548
This American Airlines deal was found by Cheapflights users on 1/9. 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 10/307:00 amBSL - STL
2 stops23h 12mAmerican Airlines
Sun 11/16:00 amSTL - BSL
2 stops26h 05mAmerican Airlines
Deal found 1/9$553

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 January 11, 2026.
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

Sat 1/24

7:10 am-5:00 pm

1 stop16h 50m

Chicago O'Hare Intl

Fri 2/6

6:25 pm-2:10 pm

1 stop12h 45m

$483

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Thu 2/19

6:05 am-5:00 pm

1 stop17h 55m

Chicago O'Hare Intl

Sun 2/22

1:39 pm-3:05 pm

2 stops18h 26m

$483

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Fri 3/13

7:00 am-4:25 pm

1 stop15h 25m

Chicago O'Hare Intl

Wed 3/18

7:40 pm-2:55 pm

1 stop13h 15m

$484

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Fri 6/19

6:00 am-12:30 pm

1 stop13h 30m

Chicago O'Hare Intl

Wed 7/15

10:35 pm-10:40 pm

1 stop17h 05m

$487

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Fri 6/19

6:00 am-12:30 pm

1 stop13h 30m

Chicago O'Hare Intl

Thu 7/16

6:40 pm-10:50 pm

2 stops21h 10m

$487

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Fri 6/19

6:00 am-12:30 pm

1 stop13h 30m

Chicago O'Hare Intl

Sat 7/11

8:45 pm-11:20 am

1 stop31h 35m

$487

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

Sat 5/30

6:35 am-7:26 pm

2 stops19h 51m

Lambert-St Louis

Sun 6/7

9:40 pm-10:50 pm

1 stop18h 10m

$554

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

Sat 1/24

7:10 am-10:44 pm

2 stops22h 34m

Lambert-St Louis

Wed 1/28

3:40 pm-2:55 pm

2 stops16h 15m

$555

BaselChicago

BSL - MDW

BSLMDW

Basel EuroAirport Swiss

Fri 3/13

6:05 am-6:40 pm

2 stops18h 35m

Chicago Midway

Wed 3/18

1:10 pm-1:50 pm

2 stops18h 40m

$585

BaselChicago

BSL - MDW

BSLMDW

Basel EuroAirport Swiss

Sat 2/7

6:05 am-4:16 pm

2 stops17h 11m

Chicago Midway

Mon 2/9

10:46 am-9:50 am

2 stops16h 04m

$585

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/10

Showing 1-10 of 37 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 16h 54m. Fly via American Airlines, Delta, or British Airways to get the fastest option. There are 4630 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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