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$420+ Cheap flights from Illinois to Basel (EAP)

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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — EAP
Apr 27 — May 41
Sun 4/27
Sun 5/4
1 adult, Economy
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Cheap flight deals from Illinois to Basel

Keep the following information in mind while searching for Illinois to Basel flight deals. Data was last updated April 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$624
(Flightnetwork)

One-way from

$434
(Kiwi.com)

Popular in

May

Cheapest in

September

Average price

$1,181
Provider with most accurate pricing for Chicago (CHI)-Basel (EAP) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Basel (EAP) flights.
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From Illinois to Basel (EAP)
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One-way flight from Illinois to Basel (EAP)
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Highest demand for flights based on searches. 18% potential increase in price ($234 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($44 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 Illinois to Basel

Cheapest flights from Illinois to Basel
Explore the most affordable flight options available from Illinois to Basel. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

This FlightHub deal was found by Cheapflights users on 4/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/911:25 amORD - BSL
1 stop15h 15mTurkish Airlines
Thu 9/2510:35 amBSL - ORD
1 stop30h 05mTurkish Airlines
Deal found 4/21$582
This Flightnetwork deal was found by Cheapflights users on 4/21. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/49:15 pmORD - BSL
1 stop15h 00mBritish Airways
Wed 6/116:40 amBSL - ORD
1 stop14h 10mBritish Airways
Deal found 4/21$624
This American Airlines deal was found by Cheapflights users on 4/21. 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 6/410:25 pmORD - BSL
1 stop17h 15mAmerican Airlines
Wed 6/116:40 amBSL - ORD
1 stop18h 35mAmerican Airlines
Deal found 4/21$625
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Sun 10/264:45 pmSTL - BSL
1 stop19h 25mUnited Airlines
Sun 11/92:15 pmBSL - STL
2 stops32h 11mUnited Airlines
Deal found 4/21$701
This oojo deal was found by Cheapflights users on 4/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/264:52 pmSTL - BSL
2 stops20h 08mBritish Airways
Sun 11/96:35 amBSL - STL
2 stops20h 25mBritish Airways
Deal found 4/21$703
This FlightHub deal was found by Cheapflights users on 4/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/264:45 pmSTL - BSL
1 stop11h 15mLufthansa
Sun 11/96:50 amBSL - STL
1 stop14h 05mLufthansa
Deal found 4/21$707
This Booking.com deal was found by Cheapflights users on 4/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/11:30 pmSTL - BSL
2 stops17h 10mMultiple Airlines
Tue 9/306:05 amBSL - STL
2 stops20h 52mMultiple Airlines
Deal found 4/22$721
This FlightHub deal was found by Cheapflights users on 4/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/99:40 pmORD - BSL
1 stop14h 55mMultiple Airlines
Thu 9/2511:30 amBSL - ORD
2 stops15h 41mMultiple Airlines
Deal found 4/21$788
This AirNGo deal was found by Cheapflights users on 4/21. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/197:30 amSTL - BSL
2 stops20h 20mAir Canada
Mon 5/2611:30 amBSL - STL
2 stops39h 28mAir Canada
Deal found 4/21$791
This Air Canada deal was found by Cheapflights users on 4/22. 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.
Tue 5/138:40 amORD - BSL
2 stops19h 10mAir Canada
Tue 5/2011:25 amBSL - ORD
2 stops15h 47mAir Canada
Deal found 4/22$793
This Austrian Airlines deal was found by Cheapflights users on 4/21. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/54:20 pmORD - BSL
1 stop34h 20mAustrian Airlines
Mon 5/128:25 pmBSL - ORD
1 stop23h 55mAustrian Airlines
Deal found 4/21$806
This KLM deal was found by Cheapflights users on 4/22. 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.
Tue 5/131:08 pmMDW - BSL
2 stops13h 27mKLM
Tue 5/2010:15 amBSL - MDW
2 stops14h 30mKLM
Deal found 4/22$819

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Basel 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 22, 2025.
Use the filters below to find and compare flights from Illinois to Basel that are best for you.

Fly from

Illinois

Fly to

Basel

Route

Depart

Return

Price

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 6/4

9:15 pm-7:15 pm

1 stop15h 00m

Basel EuroAirport Swiss

Wed 6/11

6:40 am-1:50 pm

1 stop14h 10m

$624

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 6/4

10:25 pm-10:40 pm

1 stop17h 15m

Basel EuroAirport Swiss

Wed 6/11

6:40 am-6:15 pm

1 stop18h 35m

$625

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Mon 9/1

1:30 pm-1:40 pm

2 stops17h 10m

Basel EuroAirport Swiss

Tue 9/30

6:05 am-7:57 pm

2 stops20h 52m

$721

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Mon 9/1

5:30 pm-7:35 pm

2 stops19h 05m

Basel EuroAirport Swiss

Tue 9/30

6:30 pm-1:30 pm

1 stop26h 00m

$752

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Mon 5/19

7:30 am-10:50 am

2 stops20h 20m

Basel EuroAirport Swiss

Mon 5/26

11:30 am-7:58 pm

2 stops39h 28m

$791

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Tue 5/13

8:40 am-10:50 am

2 stops19h 10m

Basel EuroAirport Swiss

Tue 5/20

11:25 am-8:12 pm

2 stops15h 47m

$793

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Tue 5/6

3:50 pm-12:25 pm

2 stops13h 35m

Basel EuroAirport Swiss

Tue 5/13

8:30 am-8:12 pm

2 stops18h 42m

$796

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Mon 5/5

4:20 pm-9:40 am

1 stop34h 20m

Basel EuroAirport Swiss

Mon 5/12

8:25 pm-1:20 pm

1 stop23h 55m

$806

ChicagoBasel

MDW - BSL

MDWBSL

Chicago Midway

Tue 5/13

1:08 pm-9:35 am

2 stops13h 27m

Basel EuroAirport Swiss

Tue 5/20

10:15 am-5:45 pm

2 stops14h 30m

$819

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Mon 5/5

7:50 pm-9:40 am

1 stop30h 50m

Basel EuroAirport Swiss

Thu 5/8

6:55 pm-9:40 am

1 stop21h 45m

$915

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 26 results
1
2
3

Best time to book a flight from Illinois to Basel

Have a flexible travel schedule? Discover the best time to fly to Basel from Illinois 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 Illinois to Basel

What is the cheapest time of day to fly from IL to EAP?

Find hourly flight availability from Illinois to Basel. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 22, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Basel as you normally would.

Rainfall in Basel by month

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

In terms of precipitation, rainfall in Basel ranges from 1.9 - 3.4 inches per month. June is typically the wettest month, when rainfall can reach 3.4 in. February is typically the driest time to visit Basel when rainfall is around 1.9 in.

Temperature in Basel by month

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

If weather is an important factor for your trip to Basel, 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 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Basel

Get insights into the airlines that provide service to Basel. 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 Basel. Reviews last updated April 22, 2025.
Read through reviews of airlines operating flights from Illinois to Basel, such as Delta, KLM and Austrian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,331 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,441 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,683 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Basel. 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 into for flights to Basel from Illinois?

    Located just 0.2 mi from the city center, Basel All airports (EAP) is the airport most travelers will use when flying to Basel from Illinois.

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

    The cheapest airlines for a one-way flight from Illinois to Basel are American Airlines ($620), British Airways ($621), and Turkish Airlines ($713).

  • What are the most popular routes from Illinois to Basel?

    While some choose either Chicago Midway - Basel EuroAirport Swiss or Lambert-St Louis - Basel EuroAirport Swiss, Chicago O'Hare Intl - Basel EuroAirport Swiss is the most popular route from Illinois to Basel.

  • Can I find deals for flights from Illinois to Basel that include hotel bookings?

    Yes. In addition to deals on Illinois to Basel flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Basel?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Basel.

  • Can I find deals for business class flights from Illinois to Basel?

    Yes. Cheapflights offers flight deals from Illinois to Basel 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 Illinois to Basel?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Basel (average of $545). Flying from Illinois to Basel in June is currently the most expensive (average of $1,132). 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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