HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$261+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — ORD
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$439
(Billigflug)

One-way from

$261
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$424
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. 14% potential increase in price ($100 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 28, 2025.

This Finnair deal was found by Cheapflights users on 3/26. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:45 amBSL - ORD
1 stop15h 05mMultiple Airlines
Tue 10/75:45 pmORD - BSL
1 stop22h 05mMultiple Airlines
Deal found 3/26$432
This American Airlines deal was found by Cheapflights users on 3/27. 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 4/36:10 amBSL - ORD
1 stop16h 45mAmerican Airlines
Fri 4/188:20 pmORD - BSL
1 stop19h 30mAmerican Airlines
Deal found 3/27$440
This British Airways deal was found by Cheapflights users on 3/26. 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 4/76:35 amBSL - ORD
1 stop16h 20mBritish Airways
Sun 4/138:20 pmORD - BSL
1 stop15h 00mBritish Airways
Deal found 3/26$442
This Delta deal was found by Cheapflights users on 3/27. 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.
Thu 4/36:15 amBSL - ORD
1 stop14h 55mDelta
Fri 4/184:20 pmORD - BSL
1 stop10h 15mDelta
Deal found 3/27$477
This flugladen.de deal was found by Cheapflights users on 3/27. 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.
Thu 4/310:15 amBSL - MDW
2 stops15h 03mKLM
Fri 4/189:20 amMDW - BSL
2 stops17h 15mKLM
Deal found 3/27$487
This flugladen.de deal was found by Cheapflights users on 3/27. 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.
Thu 4/2410:15 amBSL - MDW
2 stops19h 07mAir France
Wed 5/76:25 pmMDW - BSL
2 stops16h 30mAir France
Deal found 3/27$488
This TUI.com deal was found by Cheapflights users on 3/26. 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 TUI.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1710:15 amBSL - ORD
1 stop10h 55mAir France
Thu 4/241:25 pmORD - BSL
2 stops13h 10mAir France
Deal found 3/26$491
This flugladen.de deal was found by Cheapflights users on 3/27. 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.
Thu 4/36:15 amBSL - ORD
2 stops15h 58mKLM
Fri 4/1812:15 pmORD - BSL
2 stops14h 20mKLM
Deal found 3/27$505
This Ticket deal was found by Cheapflights users on 3/26. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1011:40 amBSL - STL
2 stops17h 32mMultiple Airlines
Mon 4/143:47 pmSTL - BSL
2 stops19h 33mMultiple Airlines
Deal found 3/26$513
This Delta deal was found by Cheapflights users on 3/27. 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 6/1410:15 amBSL - MDW
2 stops15h 30mDelta
Sun 6/291:09 pmMDW - BSL
2 stops13h 26mDelta
Deal found 3/27$524
This British Airways deal was found by Cheapflights users on 3/26. 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.
Thu 4/106:10 amBSL - STL
2 stops20h 19mBritish Airways
Mon 4/1412:00 pmSTL - BSL
2 stops16h 45mBritish Airways
Deal found 3/26$528
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Mon 4/141:00 pmBSL - ORD
2 stops17h 29mUnited Airlines
Wed 4/305:50 pmORD - BSL
1 stop18h 45mUnited Airlines
Deal found 3/26$548

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 March 28, 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

Thu 4/24

6:10 am-1:55 pm

1 stop14h 45m

Chicago O'Hare Intl

Wed 5/7

8:30 pm-7:00 pm

1 stop15h 30m

$439

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Wed 4/23

6:40 am-11:45 am

1 stop12h 05m

Chicago O'Hare Intl

Wed 4/30

10:20 pm-7:15 pm

1 stop13h 55m

$440

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Sun 6/15

11:35 am-9:24 pm

2 stops16h 49m

Chicago O'Hare Intl

Sun 6/29

8:46 am-11:20 am

2 stops19h 34m

$446

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Wed 4/9

10:15 am-2:40 pm

1 stop11h 25m

Chicago O'Hare Intl

Fri 4/25

4:20 pm-9:35 am

1 stop10h 15m

$478

BaselChicago

BSL - MDW

BSLMDW

Basel EuroAirport Swiss

Thu 4/24

10:15 am-10:22 pm

2 stops19h 07m

Chicago Midway

Wed 5/7

6:25 pm-5:55 pm

2 stops16h 30m

$488

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Thu 4/17

10:15 am-2:10 pm

1 stop10h 55m

Chicago O'Hare Intl

Thu 4/24

1:25 pm-9:35 am

2 stops13h 10m

$491

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

Thu 4/10

11:40 am-10:12 pm

2 stops17h 32m

Lambert-St Louis

Mon 4/14

3:47 pm-6:20 pm

2 stops19h 33m

$513

BaselChicago

BSL - MDW

BSLMDW

Basel EuroAirport Swiss

Sat 6/14

10:15 am-6:45 pm

2 stops15h 30m

Chicago Midway

Sun 6/29

1:09 pm-9:35 am

2 stops13h 26m

$524

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Sat 6/14

10:15 am-2:10 pm

1 stop10h 55m

Chicago O'Hare Intl

Sat 6/28

4:20 pm-9:35 am

1 stop10h 15m

$526

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

Thu 4/10

6:10 am-7:29 pm

2 stops20h 19m

Lambert-St Louis

Mon 4/14

12:00 pm-11:45 am

2 stops16h 45m

$528

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 32 results
1
2
3
4

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 March 28, 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
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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
7,896 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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
1,321 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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
7.5
Good
769 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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
1,424 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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
8,603 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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?

    $620 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 American Airlines and Austrian Airlines, with prices starting from $645 and $661, 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 $323). 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 Los Angeles flights
Basel to Newark flights
Basel to LaGuardia flights
Basel to Miami flights
Basel to O'Hare Intl flights
Basel to San Francisco flights
Basel to Seattle flights
Basel to Las Vegas flights
Basel to Sky Harbor Intl flights
Basel to Boston flights
Basel to Salt Lake City flights
Basel to Baltimore flights
Basel to Fort Lauderdale flights
Basel to Dulles Intl flights
Basel to West Palm Beach flights
Basel to Orlando flights
Basel to Denver flights
Basel to Midway flights
Basel to Charlotte flights
Basel to Reagan-National flights
Basel to Philadelphia flights
Basel to George Bush Intcntl flights
Basel to San Diego flights
Basel to San Antonio flights
Basel to Detroit flights
Basel to Dallas/Fort Worth flights
Basel to Austin flights
Basel to Atlanta flights
Basel to Pensacola flights
Basel to Fort Myers flights
Basel to St. Louis flights
Basel to Tampa flights
Basel to Syracuse flights
Basel to Kansas City flights
Basel to Indianapolis flights
Basel to Raleigh flights
Basel to New Orleans flights
Basel to Minneapolis flights
Basel to Oakland 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.