What is the cheapest airline that flies from Illinois to Basel?

United Airlines, Turkish Airlines, and British Airways are the most popular carriers operating from Illinois to Basel

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.

$226 Cheap Flights from Illinois to Basel in 2025/26

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Find the cheapest flights from Illinois to Basel

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:49 am - 9:10 amSTL-BSL

15h 21m2 stops

9:50 am - 7:16 pmBSL-STL

16h 26m2 stops

$496United Airlines

Find Deal

Tue, Oct 28 - Wed, Nov 5

12:58 pm - 3:05 pmSTL-BSL

19h 07m2 stops

7:00 am - 9:48 pmBSL-STL

20h 48m2 stops

$525American Airlines

Find Deal

Sun, Mar 1 - Fri, Mar 13

10:45 am - 1:50 pmSTL-BSL

21h 05m2 stops

6:05 am - 11:23 pmBSL-STL

24h 18m2 stops

$533Delta

Find Deal

Sun, Oct 26 - Sun, Nov 9

11:45 am - 12:30 pmSTL-BSL

17h 45m2 stops

6:45 am - 2:55 pmBSL-STL

14h 10m1 stop

$536Multiple Airlines

Find Deal

Sun, Mar 1 - Fri, Mar 13

3:50 pm - 1:45 pmSTL-BSL

14h 55m1 stop

6:45 am - 2:55 pmBSL-STL

14h 10m1 stop

$544Lufthansa

Find Deal

Sun, Mar 1 - Fri, Mar 13

6:43 pm - 7:40 pmSTL-BSL

18h 57m2 stops

6:45 am - 1:55 pmBSL-STL

14h 10m1 stop

$547Lufthansa

Find Deal

Sun, Oct 26 - Sun, Nov 9

8:20 pm - 5:10 pmORD-BSL

37h 50m1 stop

6:05 pm - 6:25 pmBSL-ORD

31h 20m1 stop

$559Turkish Airlines

Find Deal

Tue, Nov 4 - Wed, Nov 12

11:50 am - 5:10 pmORD-BSL

22h 20m1 stop

6:05 pm - 6:25 pmBSL-ORD

31h 20m1 stop

$583Turkish Airlines

Find Deal

Thu, Nov 6 - Wed, Nov 19

11:27 am - 9:10 amSTL-BSL

14h 43m2 stops

6:45 am - 2:55 pmBSL-STL

14h 10m1 stop

$585Multiple Airlines

Find Deal

Sun, Mar 1 - Fri, Mar 13

10:04 am - 1:50 pmSTL-BSL

20h 46m2 stops

6:05 am - 4:59 pmBSL-STL

17h 54m2 stops

$810Delta

Find Deal

Wed, Dec 24 - Wed, Dec 31

United Airlines flights from Illinois to Basel

Our best United Airlines deals on Illinois to Basel flight tickets

United Airlines

Oct 28

STL11:49 amLambert-St Louis

15h 21m

2 stops

BSL9:10 amBasel EuroAirport Swiss

Nov 5

BSL9:50 amBasel EuroAirport Swiss

16h 26m

2 stops

STL7:16 pmLambert-St Louis

$496

Find similar

United Airlines

Oct 26

STL6:43 pmLambert-St Louis

18h 57m

2 stops

BSL7:40 pmBasel EuroAirport Swiss

Nov 9

BSL9:50 amBasel EuroAirport Swiss

35h 34m

2 stops

STL2:24 pmLambert-St Louis

$551

Find similar

United Airlines

Oct 26

STL10:00 amLambert-St Louis

27h 40m

2 stops

BSL7:40 pmBasel EuroAirport Swiss

Nov 9

BSL9:50 amBasel EuroAirport Swiss

31h 17m

2 stops

STL10:07 amLambert-St Louis

$552

Find similar

American Airlines flights from Illinois to Basel

Our best American Airlines deals on Illinois to Basel flight tickets

American Airlines

Mar 1

STL12:58 pmLambert-St Louis

19h 07m

2 stops

BSL3:05 pmBasel EuroAirport Swiss

Mar 13

BSL7:00 amBasel EuroAirport Swiss

20h 48m

2 stops

STL9:48 pmLambert-St Louis

$525

Find similar

American Airlines

Mar 27

CMI3:45 pmChampaign University-Willard

23h 45m

2 stops

BSL9:30 pmBasel EuroAirport Swiss

Mar 31

BSL11:55 amBasel EuroAirport Swiss

40h 32m

2 stops

CMI9:27 pmChampaign University-Willard

$849

Find similar

American Airlines

Oct 17

STL7:01 amLambert-St Louis

20h 59m

2 stops

BSL11:00 amBasel EuroAirport Swiss

Oct 29

BSL6:20 amBasel EuroAirport Swiss

20h 00m

2 stops

STL8:20 pmLambert-St Louis

$1,027

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Tue 10/28

11:49 am-9:10 am

2 stops15h 21m

Basel EuroAirport Swiss

Wed 11/5

9:50 am-7:16 pm

2 stops16h 26m

$496

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 3/1

12:58 pm-3:05 pm

2 stops19h 07m

Basel EuroAirport Swiss

Fri 3/13

7:00 am-9:48 pm

2 stops20h 48m

$525

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 10/26

10:45 am-1:50 pm

2 stops21h 05m

Basel EuroAirport Swiss

Sun 11/9

6:05 am-11:23 pm

2 stops24h 18m

$533

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 3/1

11:45 am-12:30 pm

2 stops17h 45m

Basel EuroAirport Swiss

Fri 3/13

6:45 am-2:55 pm

1 stop14h 10m

$536

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 3/1

3:50 pm-1:45 pm

1 stop14h 55m

Basel EuroAirport Swiss

Fri 3/13

6:45 am-2:55 pm

1 stop14h 10m

$544

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 10/26

6:43 pm-7:40 pm

2 stops18h 57m

Basel EuroAirport Swiss

Sun 11/9

6:45 am-1:55 pm

1 stop14h 10m

$547

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Tue 11/4

8:20 pm-5:10 pm

1 stop37h 50m

Basel EuroAirport Swiss

Wed 11/12

6:05 pm-6:25 pm

1 stop31h 20m

$559

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Thu 11/6

11:50 am-5:10 pm

1 stop22h 20m

Basel EuroAirport Swiss

Wed 11/19

6:05 pm-6:25 pm

1 stop31h 20m

$583

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 3/1

11:27 am-9:10 am

2 stops14h 43m

Basel EuroAirport Swiss

Fri 3/13

6:45 am-2:55 pm

1 stop14h 10m

$585

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Wed 12/24

10:04 am-1:50 pm

2 stops20h 46m

Basel EuroAirport Swiss

Wed 12/31

6:05 am-4:59 pm

2 stops17h 54m

$810

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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.