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$406+ 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 6/18. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — ORD
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
2 stars

Round-trip from

$454
(American Airlines)

One-way from

$406
(Mytrip)

Popular in

March

Cheapest in

October

Average price

$448
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. 8% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This American Airlines deal was found by Cheapflights users on 4/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2411:50 amBSL - ORD
1 stop30h 55mAmerican Airlines
Tue 6/34:44 pmORD - BSL
2 stops23h 06mAmerican Airlines
Deal found 4/17$454
This British Airways deal was found by Cheapflights users on 4/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2411:50 amBSL - ORD
1 stop13h 25mBritish Airways
Tue 6/38:30 pmORD - BSL
1 stop15h 45mBritish Airways
Deal found 4/17$455
This British Airways deal was found by Cheapflights users on 4/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/211:45 amBSL - STL
2 stops18h 48mBritish Airways
Tue 5/67:30 pmSTL - BSL
2 stops16h 45mBritish Airways
Deal found 4/16$558
This Iberia deal was found by Cheapflights users on 4/17. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/46:00 amBSL - ORD
2 stops17h 18mMultiple Airlines
Sun 7/209:15 pmORD - BSL
1 stop18h 35mMultiple Airlines
Deal found 4/17$628
This Lufthansa deal was found by Cheapflights users on 4/17. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/186:05 amBSL - ORD
1 stop15h 50mLufthansa
Mon 7/283:35 pmORD - BSL
1 stop10h 35mLufthansa
Deal found 4/17$654
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2410:15 amBSL - MDW
2 stops15h 30mDelta
Wed 6/47:25 pmMDW - BSL
2 stops15h 30mDelta
Deal found 4/17$691
This United Airlines deal was found by Cheapflights users on 4/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/49:45 amBSL - ORD
2 stops17h 25mUnited Airlines
Sun 7/201:09 pmORD - BSL
2 stops13h 01mUnited Airlines
Deal found 4/17$781
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2010:15 amBSL - ORD
1 stop10h 55mDelta
Mon 4/284:15 pmORD - BSL
2 stops13h 55mDelta
Deal found 4/17$787
This Air Canada deal was found by Cheapflights users on 4/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/48:25 amBSL - ORD
2 stops20h 40mAir Canada
Sun 7/201:01 pmORD - BSL
2 stops14h 54mAir Canada
Deal found 4/17$851
This Turkish Airlines deal was found by Cheapflights users on 4/17. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1910:35 amBSL - ORD
1 stop30h 05mTurkish Airlines
Fri 4/2511:25 amORD - BSL
1 stop23h 35mTurkish Airlines
Deal found 4/17$853
This KLM deal was found by Cheapflights users on 4/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/182:25 pmBSL - ORD
1 stop30h 45mKLM
Sun 4/204:20 pmORD - BSL
1 stop14h 30mKLM
Deal found 4/17$924
This KLM deal was found by Cheapflights users on 4/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1810:15 amBSL - MDW
2 stops15h 05mKLM
Sun 4/203:02 pmMDW - BSL
2 stops15h 48mKLM
Deal found 4/17$938

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 April 17, 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

Sat 5/24

11:50 am-11:45 am

1 stop30h 55m

Chicago O'Hare Intl

Tue 6/3

4:44 pm-10:50 pm

2 stops23h 06m

$454

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Sat 5/24

11:50 am-6:15 pm

1 stop13h 25m

Chicago O'Hare Intl

Tue 6/3

8:30 pm-7:15 pm

1 stop15h 45m

$455

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

Fri 5/2

11:45 am-11:33 pm

2 stops18h 48m

Lambert-St Louis

Tue 5/6

7:30 pm-7:15 pm

2 stops16h 45m

$558

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Fri 7/4

6:00 am-4:18 pm

2 stops17h 18m

Chicago O'Hare Intl

Sun 7/20

9:15 pm-10:50 pm

1 stop18h 35m

$628

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Fri 7/18

6:05 am-2:55 pm

1 stop15h 50m

Chicago O'Hare Intl

Mon 7/28

3:35 pm-9:10 am

1 stop10h 35m

$654

BaselChicago

BSL - MDW

BSLMDW

Basel EuroAirport Swiss

Sat 5/24

10:15 am-6:45 pm

2 stops15h 30m

Chicago Midway

Wed 6/4

7:25 pm-5:55 pm

2 stops15h 30m

$691

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Fri 7/4

9:45 am-8:10 pm

2 stops17h 25m

Chicago O'Hare Intl

Sun 7/20

1:09 pm-9:10 am

2 stops13h 01m

$781

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Fri 7/4

8:25 am-10:05 pm

2 stops20h 40m

Chicago O'Hare Intl

Sun 7/20

1:01 pm-10:55 am

2 stops14h 54m

$851

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Thu 7/3

6:15 am-4:18 pm

2 stops17h 03m

Chicago O'Hare Intl

Thu 7/10

10:35 am-9:30 am

2 stops15h 55m

$991

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Sun 6/1

8:25 pm-1:20 pm

1 stop23h 55m

Chicago O'Hare Intl

Sun 6/8

4:20 pm-9:40 am

1 stop34h 20m

$1,004

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 22 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 April 17, 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
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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
1,327 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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
775 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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
7.5
Good
1,435 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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
SWISS
7.5
Good
1,580 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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?

    $606 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 Delta, with prices starting from $700 and $963, 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.

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