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Cheap flights from Illinois to Basel from $436

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Basel departing on 3/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to Basel

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
2:00 pm - 10:20 pmSTL-BSL
25h 20m2 stops
British Airways Logo
7:00 am - 11:39 pmBSL-STL
22h 39m2 stops
$436British Airways
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Sun, Mar 1 - Fri, Mar 13
British Airways Logo
2:00 pm - 3:05 pmSTL-BSL
18h 05m2 stops
British Airways Logo
7:00 am - 5:59 pmBSL-STL
16h 59m2 stops
$437British Airways
Find Deal
Sun, Mar 1 - Fri, Mar 13
Lufthansa Logo
3:50 pm - 10:05 amSTL-BSL
11h 15m1 stop
Lufthansa Logo
10:35 am - 4:03 pmBSL-STL
36h 28m2 stops
$439Lufthansa
Find Deal
Fri, Jan 16 - Tue, Jan 20
British Airways Logo
3:40 pm - 10:20 pmSTL-BSL
23h 40m2 stops
British Airways Logo
7:00 am - 6:16 pmBSL-STL
18h 16m2 stops
$450British Airways
Find Deal
Tue, Jan 13 - Tue, Jan 20
Lufthansa Logo
6:45 pm - 7:40 pmSTL-BSL
17h 55m2 stops
Lufthansa Logo
6:45 am - 2:55 pmBSL-STL
14h 10m1 stop
$476Lufthansa
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Sun, Mar 1 - Fri, Mar 13
Delta Logo
9:45 am - 10:15 amSTL-BSL
17h 30m2 stops
Delta Logo
6:05 am - 11:37 pmBSL-STL
24h 32m2 stops
$483Delta
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Fri, Jan 16 - Tue, Jan 20
Delta Logo
5:04 pm - 9:50 amSTL-BSL
33h 46m2 stops
Delta Logo
11:15 am - 8:43 pmBSL-STL
16h 28m2 stops
$495Delta
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Wed, Jan 28 - Sun, Feb 1
Turkish Airlines Logo
11:25 am - 9:45 amORD-BSL
15h 20m1 stop
Turkish Airlines Logo
7:00 pm - 9:40 amBSL-ORD
21h 40m1 stop
$565Turkish Airlines
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Tue, Mar 31 - Thu, Apr 9
Turkish Airlines Logo
11:50 am - 5:10 pmORD-BSL
22h 20m1 stop
Turkish Airlines Logo
6:05 pm - 10:05 amBSL-ORD
23h 00m1 stop
$579Turkish Airlines
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Wed, Jan 14 - Wed, Jan 21
Multiple Airlines Logo
6:30 pm - 9:00 pmORD-BSL
19h 30m2 stops
Multiple Airlines Logo
2:20 pm - 10:42 pmBSL-ORD
39h 22m3 stops
$670Multiple Airlines
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Wed, Jan 14 - Wed, Jan 21

British Airways flights from Illinois to Basel

Our best British Airways deals on Illinois to Basel flight tickets
British Airways
Mar 1
STL2:00 pmLambert-St Louis
25h 20m
2 stops
BSL10:20 pmBasel EuroAirport Swiss
Mar 13
BSL7:00 amBasel EuroAirport Swiss
22h 39m
2 stops
STL11:39 pmLambert-St Louis
$436
Find similar
British Airways
Mar 1
STL2:00 pmLambert-St Louis
18h 05m
2 stops
BSL3:05 pmBasel EuroAirport Swiss
Mar 13
BSL7:00 amBasel EuroAirport Swiss
16h 59m
2 stops
STL5:59 pmLambert-St Louis
$437
Find similar
British Airways
Jan 13
STL3:40 pmLambert-St Louis
23h 40m
2 stops
BSL10:20 pmBasel EuroAirport Swiss
Jan 20
BSL7:00 amBasel EuroAirport Swiss
18h 16m
2 stops
STL6:16 pmLambert-St Louis
$450
Find similar

Lufthansa flights from Illinois to Basel

Our best Lufthansa deals on Illinois to Basel flight tickets
Lufthansa
Jan 16
STL3:50 pmLambert-St Louis
11h 15m
1 stop
BSL10:05 amBasel EuroAirport Swiss
Jan 20
BSL10:35 amBasel EuroAirport Swiss
36h 28m
2 stops
STL4:03 pmLambert-St Louis
$439
Find similar
Lufthansa
Mar 1
STL6:45 pmLambert-St Louis
17h 55m
2 stops
BSL7:40 pmBasel EuroAirport Swiss
Mar 13
BSL6:45 amBasel EuroAirport Swiss
14h 10m
1 stop
STL2:55 pmLambert-St Louis
$476
Find similar
Lufthansa
Mar 1
STL3:50 pmLambert-St Louis
11h 05m
1 stop
BSL9:55 amBasel EuroAirport Swiss
Mar 13
BSL6:45 amBasel EuroAirport Swiss
14h 10m
1 stop
STL2:55 pmLambert-St Louis
$487
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 November 30, 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

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 3/1

2:00 pm-10:20 pm

2 stops25h 20m

Basel EuroAirport Swiss

Fri 3/13

7:00 am-11:39 pm

2 stops22h 39m

$436

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 3/1

2:00 pm-3:05 pm

2 stops18h 05m

Basel EuroAirport Swiss

Fri 3/13

7:00 am-5:59 pm

2 stops16h 59m

$437

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Fri 1/16

3:50 pm-10:05 am

1 stop11h 15m

Basel EuroAirport Swiss

Tue 1/20

10:35 am-4:03 pm

2 stops36h 28m

$439

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Tue 1/13

3:40 pm-10:20 pm

2 stops23h 40m

Basel EuroAirport Swiss

Tue 1/20

7:00 am-6:16 pm

2 stops18h 16m

$450

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 3/1

6:45 pm-7:40 pm

2 stops17h 55m

Basel EuroAirport Swiss

Fri 3/13

6:45 am-2:55 pm

1 stop14h 10m

$476

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Fri 1/16

9:45 am-10:15 am

2 stops17h 30m

Basel EuroAirport Swiss

Tue 1/20

6:05 am-11:37 pm

2 stops24h 32m

$483

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Wed 1/28

5:04 pm-9:50 am

2 stops33h 46m

Basel EuroAirport Swiss

Sun 2/1

11:15 am-8:43 pm

2 stops16h 28m

$495

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Tue 3/31

11:25 am-9:45 am

1 stop15h 20m

Basel EuroAirport Swiss

Thu 4/9

7:00 pm-9:40 am

1 stop21h 40m

$565

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 1/14

11:50 am-5:10 pm

1 stop22h 20m

Basel EuroAirport Swiss

Wed 1/21

6:05 pm-10:05 am

1 stop23h 00m

$579

ChicagoBasel

ORD - BSL

ORDBSL

Chicago O'Hare Intl

Wed 1/14

6:30 pm-9:00 pm

2 stops19h 30m

Basel EuroAirport Swiss

Wed 1/21

2:20 pm-10:42 pm

3 stops39h 22m

$670

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

Fastest flight time

10h 35m

Direct flights

None
The fastest flight from Illinois to Basel takes 10h 35m
There are no direct flights from Illinois to Basel. There are no popular flight routes from Illinois to Basel.
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  • 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.

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