HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$371+ 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — ORD
août 5 — août 121
mar. 8/5
mar. 8/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Basel to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 juillet 31, 2025.

Round-trip from

$457
(Flighttix)

One-way from

$384
(Kiwi.com)

Popular in

March

Cheapest in

May

Average price

$749
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. 8% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 juillet 31, 2025.

This Flighttix deal was found by Cheapflights users on 7/31. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/87:20 pmBSL - ORD
1 stop23h 30mBritish Airways
lun. 9/227:15 pmORD - BSL
1 stop16h 05mBritish Airways
Deal found 7/31$457
This American Airlines deal was found by Cheapflights users on 7/30. 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.
jeu. 11/136:05 amBSL - ORD
1 stop17h 55mAmerican Airlines
lun. 11/176:45 pmORD - BSL
1 stop16h 30mAmerican Airlines
Deal found 7/30$463
This Iberia deal was found by Cheapflights users on 7/31. 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.
dim. 9/77:05 amBSL - ORD
2 stops17h 18mMultiple Airlines
lun. 9/227:15 pmORD - BSL
1 stop20h 35mMultiple Airlines
Deal found 7/31$470
This lastminute.com deal was found by Cheapflights users on 7/31. 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.
ven. 9/198:25 amBSL - ORD
1 stop11h 30mLufthansa
ven. 10/34:00 pmORD - BSL
1 stop14h 45mLufthansa
Deal found 7/31$532
This United Airlines deal was found by Cheapflights users on 7/31. 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.
dim. 9/141:00 pmBSL - ORD
2 stops51h 08mUnited Airlines
dim. 9/216:30 amORD - BSL
2 stops30h 05mUnited Airlines
Deal found 7/31$540
This Delta deal was found by Cheapflights users on 7/30. 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.
sam. 9/1310:15 amBSL - ORD
2 stops18h 19mDelta
sam. 9/202:00 pmORD - BSL
2 stops17h 10mDelta
Deal found 7/30$571
This Delta deal was found by Cheapflights users on 7/29. 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.
lun. 9/86:15 amBSL - MDW
2 stops19h 22mDelta
lun. 9/2212:43 pmMDW - BSL
2 stops13h 47mDelta
Deal found 7/29$575
This oojo deal was found by Cheapflights users on 7/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 9/147:05 amBSL - STL
2 stops18h 23mBritish Airways
dim. 9/211:03 pmSTL - BSL
2 stops15h 17mBritish Airways
Deal found 7/31$584
This Delta deal was found by Cheapflights users on 7/31. 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. 8/1510:15 amBSL - STL
2 stops20h 07mDelta
mar. 8/1910:45 amSTL - BSL
2 stops15h 45mDelta
Deal found 7/31$623
This Expedia deal was found by Cheapflights users on 7/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/1510:10 amBSL - STL
2 stops20h 12mAir France
mar. 8/1911:02 amSTL - BSL
2 stops15h 28mAir France
Deal found 7/31$670
This Air Canada deal was found by Cheapflights users on 7/29. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/1211:25 amBSL - ORD
2 stops28h 44mAir Canada
mar. 8/1910:40 amORD - BSL
2 stops17h 10mAir Canada
Deal found 7/29$688
This United Airlines deal was found by Cheapflights users on 7/31. 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.
dim. 9/141:00 pmBSL - STL
2 stops17h 53mUnited Airlines
dim. 9/213:20 pmSTL - BSL
3 stops38h 05mUnited Airlines
Deal found 7/31$729

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 juillet 31, 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

lun. 9/8

7:20 pm-11:50 am

1 stop23h 30m

Chicago O'Hare Intl

lun. 9/22

7:15 pm-6:20 pm

1 stop16h 05m

$457

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

jeu. 11/13

6:05 am-5:00 pm

1 stop17h 55m

Chicago O'Hare Intl

lun. 11/17

11:48 am-2:35 pm

2 stops19h 47m

$463

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

dim. 9/7

7:05 am-5:23 pm

2 stops17h 18m

Chicago O'Hare Intl

lun. 9/22

7:15 pm-10:50 pm

1 stop20h 35m

$470

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

ven. 9/19

8:25 am-12:55 pm

1 stop11h 30m

Chicago O'Hare Intl

ven. 10/3

4:00 pm-1:45 pm

1 stop14h 45m

$532

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

dim. 9/14

1:00 pm-9:08 am

2 stops51h 08m

Chicago O'Hare Intl

dim. 9/21

6:30 am-7:35 pm

2 stops30h 05m

$540

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

sam. 9/13

10:15 am-9:34 pm

2 stops18h 19m

Chicago O'Hare Intl

sam. 9/20

2:00 pm-2:10 pm

2 stops17h 10m

$571

BaselChicago

BSL - MDW

BSLMDW

Basel EuroAirport Swiss

lun. 9/8

6:15 am-6:37 pm

2 stops19h 22m

Chicago Midway

lun. 9/22

12:43 pm-9:30 am

2 stops13h 47m

$575

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

dim. 9/14

7:05 am-6:28 pm

2 stops18h 23m

Lambert-St Louis

dim. 9/21

1:03 pm-11:20 am

2 stops15h 17m

$584

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

ven. 8/15

10:15 am-11:22 pm

2 stops20h 07m

Lambert-St Louis

mar. 8/19

10:45 am-9:30 am

2 stops15h 45m

$623

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

ven. 8/15

10:10 am-11:22 pm

2 stops20h 12m

Lambert-St Louis

mar. 8/19

11:02 am-9:30 am

2 stops15h 28m

$670

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 22 results
1
2
3

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.

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 juillet 31, 2025.
Get a feel of what it's like to fly with Delta, KLM, and Austrian Airlines from Basel EuroAirport Swiss to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Austrian Airlines
7.6
Good
823 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Basel to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Basel to John F Kennedy Intl flights
Basel to Newark flights
Basel to LaGuardia flights
Basel to Los Angeles flights
Basel to Miami flights
Basel to O'Hare Intl flights
Basel to San Francisco flights
Basel to Boston flights
Basel to Las Vegas flights
Basel to Denver flights
Basel to Fort Lauderdale flights
Basel to Dulles Intl flights
Basel to Baltimore flights
Basel to Orlando flights
Basel to West Palm Beach flights
Basel to Tampa flights
Basel to Reagan-National flights
Basel to George Bush Intcntl flights
Basel to Seattle flights
Basel to New Orleans flights
Basel to Sky Harbor Intl flights
Basel to Austin flights
Basel to Midway flights
Basel to Salt Lake City flights
Basel to Dallas/Fort Worth flights
Basel to Charlotte flights
Basel to Philadelphia flights
Basel to San Diego flights
Basel to Fort Myers flights
Basel to Minneapolis flights
Basel to Kansas City flights
Basel to Atlanta flights
Basel to Detroit flights
Basel to Portland flights
Basel to Daytona Beach flights
Basel to Billings flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.