Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Illinois to Basel from $345

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Basel departing on 9/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Illinois to Basel

Cheap round-trip flights

Turkish Airlines Logo
11:45 pm - 6:00 pmORD-BSL
35h 15m1 stop
Turkish Airlines Logo
6:55 pm - 9:40 amBSL-ORD
21h 45m1 stop
$579Turkish Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 24
Turkish Airlines Logo
11:45 pm - 9:40 amORD-BSL
26h 55m1 stop
Turkish Airlines Logo
6:55 pm - 9:40 amBSL-ORD
21h 45m1 stop
$599Turkish Airlines
Find Deal
Mon, Sep 15 - Tue, Sep 23
Lufthansa Logo
4:50 pm - 6:20 pmSTL-BSL
19h 30m1 stop
Lufthansa Logo
6:45 am - 1:55 pmBSL-STL
14h 10m1 stop
$646Lufthansa
Find Deal
Sun, Oct 26 - Sun, Nov 9
British Airways Logo
5:10 pm - 10:05 pmORD-BSL
21h 55m1 stop
British Airways Logo
6:15 am - 1:50 pmBSL-ORD
14h 35m1 stop
$651British Airways
Find Deal
Wed, Dec 24 - Mon, Jan 12
American Airlines Logo
3:08 pm - 2:55 pmORD-BSL
16h 47m2 stops
American Airlines Logo
7:10 am - 6:45 pmBSL-ORD
18h 35m1 stop
$654American Airlines
Find Deal
Wed, Nov 26 - Sat, Dec 6
Lufthansa Logo
4:50 pm - 1:45 pmSTL-BSL
14h 55m1 stop
Lufthansa Logo
6:45 am - 5:39 pmBSL-STL
17h 54m2 stops
$655Lufthansa
Find Deal
Sun, Oct 26 - Sun, Nov 9
American Airlines Logo
9:45 pm - 2:55 pmORD-BSL
11h 10m1 stop
American Airlines Logo
5:35 am - 5:55 pmBSL-ORD
18h 20m2 stops
$659American Airlines
Find Deal
Wed, Oct 29 - Sun, Nov 2
British Airways Logo
5:10 pm - 2:55 pmORD-BSL
14h 45m1 stop
British Airways Logo
11:10 am - 7:45 pmBSL-ORD
15h 35m2 stops
$661British Airways
Find Deal
Wed, Nov 26 - Sat, Dec 6
Air Canada Logo
1:30 pm - 10:50 amSTL-BSL
14h 20m2 stops
Air Canada Logo
11:30 am - 7:57 pmBSL-STL
15h 27m2 stops
$746Air Canada
Find Deal
Mon, Sep 22 - Thu, Oct 2
Air Canada Logo
1:30 pm - 10:50 amSTL-BSL
14h 20m2 stops
Air Canada Logo
11:25 am - 7:57 pmBSL-STL
39h 32m2 stops
$765Air Canada
Find Deal
Mon, Sep 22 - Tue, Sep 30

American Airlines flights from Illinois to Basel

Our best American Airlines deals on Illinois to Basel flight tickets
American Airlines
Nov 26
ORD3:08 pmChicago O'Hare Intl
16h 47m
2 stops
BSL2:55 pmBasel EuroAirport Swiss
Dec 6
BSL7:10 amBasel EuroAirport Swiss
18h 35m
1 stop
ORD6:45 pmChicago O'Hare Intl
$654
Find similar
American Airlines
Oct 29
ORD9:45 pmChicago O'Hare Intl
11h 10m
1 stop
BSL2:55 pmBasel EuroAirport Swiss
Nov 2
BSL5:35 amBasel EuroAirport Swiss
18h 20m
2 stops
ORD5:55 pmChicago O'Hare Intl
$659
Find similar
American Airlines
Nov 26
ORD4:06 pmChicago O'Hare Intl
15h 49m
2 stops
BSL2:55 pmBasel EuroAirport Swiss
Dec 6
BSL7:10 amBasel EuroAirport Swiss
19h 10m
2 stops
ORD7:20 pmChicago O'Hare Intl
$660
Find similar

British Airways flights from Illinois to Basel

Our best British Airways deals on Illinois to Basel flight tickets
British Airways
Dec 24
ORD5:10 pmChicago O'Hare Intl
21h 55m
1 stop
BSL10:05 pmBasel EuroAirport Swiss
Jan 12
BSL6:15 amBasel EuroAirport Swiss
14h 35m
1 stop
ORD1:50 pmChicago O'Hare Intl
$651
Find similar
British Airways
Nov 26
ORD5:10 pmChicago O'Hare Intl
14h 45m
1 stop
BSL2:55 pmBasel EuroAirport Swiss
Dec 6
BSL11:10 amBasel EuroAirport Swiss
15h 35m
2 stops
ORD7:45 pmChicago O'Hare Intl
$661
Find similar
British Airways
Oct 14
ORD7:10 pmChicago O'Hare Intl
20h 40m
1 stop
BSL10:50 pmBasel EuroAirport Swiss
Oct 20
BSL6:35 amBasel EuroAirport Swiss
16h 14m
2 stops
ORD3:49 pmChicago O'Hare Intl
$734
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Illinois to Basel that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 9/17

11:45 pm-6:00 pm

1 stop35h 15m

Basel EuroAirport Swiss

Wed 9/24

6:55 pm-9:40 am

1 stop21h 45m

$579

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Mon 9/15

11:45 pm-9:40 am

1 stop26h 55m

Basel EuroAirport Swiss

Tue 9/23

6:55 pm-9:40 am

1 stop21h 45m

$599

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 10/26

4:50 pm-6:20 pm

1 stop19h 30m

Basel EuroAirport Swiss

Sun 11/9

6:45 am-1:55 pm

1 stop14h 10m

$646

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 12/24

5:10 pm-10:05 pm

1 stop21h 55m

Basel EuroAirport Swiss

Mon 1/12

6:15 am-1:50 pm

1 stop14h 35m

$651

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 11/26

3:08 pm-2:55 pm

2 stops16h 47m

Basel EuroAirport Swiss

Sat 12/6

7:10 am-6:45 pm

1 stop18h 35m

$654

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 10/26

4:50 pm-1:45 pm

1 stop14h 55m

Basel EuroAirport Swiss

Sun 11/9

6:45 am-5:39 pm

2 stops17h 54m

$655

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 10/29

9:45 pm-2:55 pm

1 stop11h 10m

Basel EuroAirport Swiss

Sun 11/2

5:35 am-5:55 pm

2 stops18h 20m

$659

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 11/26

5:10 pm-2:55 pm

1 stop14h 45m

Basel EuroAirport Swiss

Sat 12/6

11:10 am-7:45 pm

2 stops15h 35m

$661

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Mon 9/22

1:30 pm-10:50 am

2 stops14h 20m

Basel EuroAirport Swiss

Thu 10/2

11:30 am-7:57 pm

2 stops15h 27m

$746

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Mon 9/22

1:30 pm-10:50 am

2 stops14h 20m

Basel EuroAirport Swiss

Tue 9/30

11:25 am-7:57 pm

2 stops39h 32m

$765

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Basel from

How to get the cheapest flight ticket from Illinois to Basel

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Basel?

On average, the least expensive day to fly to Basel from Illinois is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $881. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Basel is Saturday, with ticket prices averaging around $1,839.

What is the cheapest time of day to depart on your flight to Basel?

In the morning is the cheapest time of day to fly from Illinois to Basel when you can find flight prices for as low as $732. Flying to Basel in the morning is an ideal time because this is during off-peak travel hours. Flights to Basel are more costly in the afternoon, with an average ticket price of $1,135. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Illinois to Basel flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Basel

Direct flights

None
There are no direct flights from Illinois to Basel. There are no popular flight routes from Illinois to Basel.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Basel?

    Prices for flights from Illinois to Basel were last updated today.

  • How old do you have to be to fly from Illinois to Basel?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Basel.

  • What documentation or ID do you need to fly to Basel?

    The required travel and health documents for your Basel trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Basel. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Basel?

It is quick and easy to find Illinois to Basel flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Basel that suits you.

Can I find flights from Illinois to Basel with flexible booking policies on momondo?

All flight searches from Illinois to Basel on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Illinois to Basel?

Once you have performed a search for Illinois to Basel flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Illinois to Basel right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Illinois to Basel now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Basel and let you know when they change.

An easier way to manage your Basel trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 8/25
Mon 9/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Switzerland