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$419+ Cheap flights from Basel EuroAirport Swiss (BSL) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — ORD
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Basel to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Basel (BSL) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$420
(British Airways)
From Basel EuroAirport Swiss to Illinois
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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 21, 2025.

This Kissandfly.com deal was found by Cheapflights users on 1/21. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:50 amBSL - ORD
1 stop12h 10mBritish Airways
Wed 10/810:30 pmORD - BSL
1 stop13h 25mBritish Airways
Deal found 1/21$419
This American Airlines deal was found by Cheapflights users on 1/21. 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 10/111:50 amBSL - ORD
1 stop13h 25mAmerican Airlines
Fri 10/1012:54 pmORD - BSL
2 stops15h 06mAmerican Airlines
Deal found 1/21$422
This Iberia deal was found by Cheapflights users on 1/21. 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.
Tue 2/46:55 amBSL - ORD
2 stops20h 09mMultiple Airlines
Tue 2/115:20 pmORD - BSL
2 stops14h 40mMultiple Airlines
Deal found 1/21$426
This United Airlines deal was found by Cheapflights users on 1/21. 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.
Wed 10/19:45 amBSL - ORD
2 stops16h 44mUnited Airlines
Sun 10/121:12 pmORD - BSL
2 stops16h 13mUnited Airlines
Deal found 1/21$531
This Delta deal was found by Cheapflights users on 1/21. 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.
Wed 10/110:10 amBSL - ORD
2 stops17h 44mDelta
Sat 10/115:45 pmORD - BSL
2 stops13h 25mDelta
Deal found 1/21$556
This Expedia deal was found by Cheapflights users on 1/21. 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.
Thu 2/68:25 pmBSL - ORD
1 stop24h 40mAustrian Airlines
Wed 2/195:50 pmORD - BSL
2 stops18h 55mAustrian Airlines
Deal found 1/21$563
This Delta deal was found by Cheapflights users on 1/20. 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.
Fri 4/116:15 amBSL - MDW
2 stops15h 02mDelta
Sun 4/136:42 pmMDW - BSL
2 stops16h 08mDelta
Deal found 1/20$565
This KLM deal was found by Cheapflights users on 1/21. 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.
Thu 4/2410:15 amBSL - ORD
2 stops14h 49mKLM
Fri 5/24:20 pmORD - BSL
1 stop10h 15mKLM
Deal found 1/21$579
This Expedia deal was found by Cheapflights users on 1/21. 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.
Thu 2/611:00 amBSL - ORD
2 stops14h 25mLufthansa
Wed 2/199:10 pmORD - BSL
2 stops14h 00mLufthansa
Deal found 1/21$596
This Air France deal was found by Cheapflights users on 1/21. 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.
Thu 2/66:05 amBSL - MDW
2 stops17h 15mAir France
Wed 2/192:08 pmMDW - BSL
2 stops13h 32mAir France
Deal found 1/21$599
This United Airlines deal was found by Cheapflights users on 1/21. 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.
Tue 7/86:05 amBSL - STL
2 stops44h 35mUnited Airlines
Thu 7/1711:20 amSTL - BSL
2 stops18h 05mUnited Airlines
Deal found 1/21$635
This Air France deal was found by Cheapflights users on 1/20. 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.
Thu 3/66:05 amBSL - MDW
2 stops17h 15mMultiple Airlines
Thu 3/132:55 pmMDW - BSL
2 stops13h 45mMultiple Airlines
Deal found 1/20$715

Find flights from Basel to Illinois within your budget

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 21, 2025.

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Fly to

Any airport

Route

Depart

Return

Price

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Tue 2/4

6:55 am-5:00 pm

1 stop17h 05m

Chicago O'Hare Intl

Tue 2/11

5:00 pm-6:20 pm

1 stop18h 20m

$420

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Tue 2/4

6:55 am-8:04 pm

2 stops20h 09m

Chicago O'Hare Intl

Tue 2/11

5:20 pm-3:00 pm

2 stops14h 40m

$426

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Mon 4/7

12:10 pm-10:53 pm

2 stops17h 43m

Chicago O'Hare Intl

Sun 4/13

11:55 am-10:35 am

2 stops15h 40m

$439

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Thu 2/6

8:25 pm-2:05 pm

1 stop24h 40m

Chicago O'Hare Intl

Wed 2/19

5:50 pm-7:45 pm

2 stops18h 55m

$563

BaselChicago

BSL - MDW

BSLMDW

Basel EuroAirport Swiss

Fri 4/11

6:15 am-2:17 pm

2 stops15h 02m

Chicago Midway

Sun 4/13

6:42 pm-5:50 pm

2 stops16h 08m

$565

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Thu 7/3

6:05 am-9:55 am

2 stops34h 50m

Chicago O'Hare Intl

Thu 7/10

12:45 pm-12:25 pm

2 stops16h 40m

$569

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Thu 4/24

10:15 am-6:04 pm

2 stops14h 49m

Chicago O'Hare Intl

Fri 5/2

4:20 pm-9:35 am

1 stop10h 15m

$579

BaselChicago

BSL - ORD

BSLORD

Basel EuroAirport Swiss

Thu 2/6

11:00 am-6:25 pm

2 stops14h 25m

Chicago O'Hare Intl

Wed 2/19

9:10 pm-6:10 pm

2 stops14h 00m

$596

BaselChicago

BSL - MDW

BSLMDW

Basel EuroAirport Swiss

Thu 2/6

6:05 am-4:20 pm

2 stops17h 15m

Chicago Midway

Wed 2/19

2:08 pm-10:40 am

2 stops13h 32m

$599

BaselSt. Louis

BSL - STL

BSLSTL

Basel EuroAirport Swiss

Tue 7/8

6:05 am-7:40 pm

2 stops44h 35m

Lambert-St Louis

Thu 7/17

11:20 am-12:25 pm

2 stops18h 05m

$635

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 25 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.

Travel insights for flights from Basel to Illinois

Get recent, data-driven insights about flights from Basel to Illinois including ideal travel times, pricing trends, and more.

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 January 21, 2025.
Read reviews from past customers who have flown Air Canada, Air France and Delta 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
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

Austrian Airlines
7.6
Good
786 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

Air France
7.4
Good
1,490 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

United Airlines
7.4
Good
8,985 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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?

    $632 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on British Airways and KLM, with prices starting from $662 and $1,489, 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 $320). 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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