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$442+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — ORD
מאי 6 — מאי 131
ג' 5/6
ג' 5/13
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 מאי 1, 2025.

Round-trip from

$450
(American Airlines)

One-way from

$442
(Kiwi.com)

Popular in

February

Cheapest in

October

Average price

$449
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. 20% potential increase in price ($162 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in May 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 מאי 1, 2025.

This American Airlines deal was found by Cheapflights users on 4/29. 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.
ה' 6/1211:40 amBSL - ORD
1 stop34h 05mAmerican Airlines
ה' 6/265:45 pmORD - BSL
1 stop18h 20mAmerican Airlines
Deal found 4/29$450
This British Airways deal was found by Cheapflights users on 4/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ה' 5/156:10 amBSL - ORD
1 stop15h 30mBritish Airways
ו' 8/158:25 pmORD - BSL
2 stops19h 25mBritish Airways
Deal found 4/30$452
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ה' 5/156:15 amBSL - STL
2 stops17h 20mDelta
ב' 5/196:05 pmSTL - BSL
2 stops16h 45mDelta
Deal found 4/30$576
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ה' 5/1510:15 amBSL - MDW
2 stops15h 30mDelta
ו' 8/151:00 pmMDW - BSL
2 stops13h 30mDelta
Deal found 4/30$581
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ד' 7/161:00 pmBSL - ORD
2 stops25h 49mUnited Airlines
ש' 8/99:40 pmORD - BSL
1 stop14h 55mUnited Airlines
Deal found 4/29$581
This Lufthansa deal was found by Cheapflights users on 4/29. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ד' 7/168:25 amBSL - ORD
1 stop13h 30mLufthansa
ש' 8/93:35 pmORD - BSL
1 stop21h 00mLufthansa
Deal found 4/29$582
This Delta deal was found by Cheapflights users on 5/1. 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.
ש' 9/2710:15 amBSL - ORD
2 stops17h 21mDelta
ש' 10/115:20 pmORD - BSL
2 stops13h 30mDelta
Deal found 5/1$621
This Austrian Airlines deal was found by Cheapflights users on 5/1. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ו' 7/188:25 pmBSL - ORD
1 stop23h 55mAustrian Airlines
ב' 7/284:20 pmORD - BSL
1 stop20h 25mAustrian Airlines
Deal found 5/1$646
This KLM deal was found by Cheapflights users on 4/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ש' 7/266:15 amBSL - ORD
1 stop14h 55mKLM
ש' 8/24:20 pmORD - BSL
1 stop22h 20mKLM
Deal found 4/30$663
This Turkish Airlines deal was found by Cheapflights users on 5/1. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ב' 10/276:05 pmBSL - ORD
1 stop31h 20mTurkish Airlines
ו' 10/319:20 pmORD - BSL
1 stop37h 50mTurkish Airlines
Deal found 5/1$762
This flugladen.de deal was found by Cheapflights users on 5/1. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ב' 10/276:05 amBSL - MDW
2 stops18h 31mKLM
ו' 10/312:00 pmMDW - BSL
2 stops14h 40mKLM
Deal found 5/1$1,101
This Air France deal was found by Cheapflights users on 4/29. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
א' 7/206:15 amBSL - ORD
2 stops15h 45mMultiple Airlines
ו' 8/84:20 pmORD - BSL
1 stop22h 20mMultiple Airlines
Deal found 4/29$1,173

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 מאי 1, 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

ה' 6/12

11:40 am-2:45 pm

1 stop34h 05m

Chicago O'Hare Intl

ה' 6/26

5:45 pm-7:05 pm

1 stop18h 20m

$450

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

ה' 5/15

6:10 am-2:40 pm

1 stop15h 30m

Chicago O'Hare Intl

ו' 8/15

8:25 pm-10:50 pm

2 stops19h 25m

$452

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

ה' 5/15

6:15 am-4:35 pm

2 stops17h 20m

Lambert-St Louis

ב' 5/19

6:05 pm-5:50 pm

2 stops16h 45m

$576

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

ד' 7/16

1:00 pm-7:49 am

2 stops25h 49m

Chicago O'Hare Intl

ג' 8/12

3:35 pm-12:25 pm

1 stop13h 50m

$581

BaselChicago

BSL - MDW

BSLMDW

Basel EuroAirport Swiss

ה' 5/15

10:15 am-6:45 pm

2 stops15h 30m

Chicago Midway

ו' 8/15

1:00 pm-9:30 am

2 stops13h 30m

$581

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

ד' 7/16

8:25 am-2:55 pm

1 stop13h 30m

Chicago O'Hare Intl

ש' 8/9

3:35 pm-7:35 pm

1 stop21h 00m

$582

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

ש' 9/27

10:15 am-8:36 pm

2 stops17h 21m

Chicago O'Hare Intl

ש' 10/11

5:20 pm-1:50 pm

2 stops13h 30m

$621

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

ו' 7/18

8:25 pm-1:20 pm

1 stop23h 55m

Chicago O'Hare Intl

ב' 7/28

4:20 pm-7:45 pm

1 stop20h 25m

$646

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

ש' 7/26

6:15 am-2:10 pm

1 stop14h 55m

Chicago O'Hare Intl

ש' 8/2

4:20 pm-9:40 pm

1 stop22h 20m

$663

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

ב' 10/27

6:05 pm-7:25 pm

1 stop31h 20m

Chicago O'Hare Intl

ו' 10/31

9:20 pm-5:10 pm

1 stop37h 50m

$762

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 25 results
1
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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

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated מאי 1, 2025.
Read reviews from past customers who have flown Delta, KLM and Austrian Airlines from Basel to Illinois. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.6
Good
781 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,448 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    $616 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Lufthansa and Air France, with prices starting from $696 and $1,085, 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 - 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.

  • 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.

See more FAQs

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