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

KLM and Delta are the most popular carriers operating from Illinois to Serbia

What airlines fly to Serbia?

Air Serbia, SWISS and Lufthansa are the top three most popular airlines that fly to Serbia from Illinois according to our data. Air Serbia is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Serbia. Keep in mind that there are 11 different airlines that fly to Serbia on a routine basis, so you have a few additional options to choose from.

How many flights depart from Illinois to Serbia on average per week?

As of June 2026, there are 2 flights per week flying from Illinois to Serbia. The most common day of the week flights depart is Sat, with 100% of flights taking off on this day.

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

Prices for flights from Illinois to Serbia are updated daily.

How many operators does momondo search for flights from Illinois to Serbia?

As of June 2026, there are 11 operators available to choose from for flights from Illinois to Serbia.

How old do you have to be to fly from Illinois to Serbia?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Serbia.

What documentation or ID do you need to fly to Serbia?

The travel and health documents required for your trip to Serbia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Serbia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$423 Cheap Flights from Illinois to Serbia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Serbia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:10 pm - 12:30 pm

STL

BEG

17h 20m

2 stops

6:15 am - 1:45 pm

BEG

STL

14h 30m

1 stop

$781Multiple Airlines

Wed, Oct 21 - Fri, Nov 6

3:30 pm - 4:05 pm

STL

BEG

17h 35m

1 stop

6:15 am - 1:45 pm

BEG

STL

14h 30m

1 stop

$791Lufthansa

Wed, Oct 21 - Fri, Nov 6

3:30 pm - 4:05 pm

STL

BEG

17h 35m

1 stop

6:15 am - 1:45 pm

BEG

STL

14h 30m

1 stop

$794Lufthansa

Wed, Oct 21 - Fri, Nov 6

12:10 pm - 4:30 pm

STL

BEG

21h 20m

2 stops

9:40 am - 3:30 pm

BEG

STL

36h 50m

2 stops

$801Multiple Airlines

Wed, Oct 21 - Fri, Nov 6

12:30 pm - 11:55 am

STL

BEG

16h 25m

2 stops

6:00 am - 11:39 pm

BEG

STL

24h 39m

2 stops

$803Delta

Wed, Oct 21 - Fri, Nov 6

5:30 pm - 12:55 pm

STL

BEG

36h 25m

2 stops

12:35 pm - 4:54 pm

BEG

STL

35h 19m

2 stops

$809Delta

Sat, Oct 24 - Thu, Nov 5

3:30 pm - 12:45 pm

STL

BEG

14h 15m

1 stop

6:15 am - 1:45 pm

BEG

STL

14h 30m

1 stop

$810United Airlines

Sun, Oct 18 - Fri, Nov 6

12:10 pm - 12:45 pm

STL

BEG

17h 35m

2 stops

6:15 am - 1:45 pm

BEG

STL

14h 30m

1 stop

$813United Airlines

Sun, Oct 18 - Fri, Nov 6

9:50 pm - 4:35 pm

ORD

BEG

11h 45m

1 stop

2:00 pm - 7:50 pm

BEG

ORD

12h 50m

1 stop

$882LOT

Sun, Aug 9 - Wed, Aug 26

9:50 am - 12:30 pm

ORD

BEG

19h 40m

2 stops

2:10 pm - 7:48 pm

BEG

ORD

36h 38m

2 stops

$886Air Canada

Wed, Sep 2 - Mon, Sep 7

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Lufthansa flights from Illinois to Serbia

Our best Lufthansa deals on Illinois to Serbia flight tickets

Lufthansa

Oct 21

STL3:30 pmLambert-St Louis

17h 35m

1 stop

BEG4:05 pmBelgrade Nikola Tesla

Nov 6

BEG6:15 amBelgrade Nikola Tesla

14h 30m

1 stop

STL1:45 pmLambert-St Louis

$791

Lufthansa

Oct 21

STL3:30 pmLambert-St Louis

17h 35m

1 stop

BEG4:05 pmBelgrade Nikola Tesla

Nov 6

BEG6:15 amBelgrade Nikola Tesla

14h 30m

1 stop

STL1:45 pmLambert-St Louis

$794

Lufthansa

Oct 18

STL3:30 pmLambert-St Louis

17h 40m

1 stop

BEG4:10 pmBelgrade Nikola Tesla

Nov 3

BEG1:30 pmBelgrade Nikola Tesla

16h 55m

2 stops

STL11:25 pmLambert-St Louis

$815

Delta flights from Illinois to Serbia

Our best Delta deals on Illinois to Serbia flight tickets

Delta

Oct 21

STL5:45 pmLambert-St Louis

22h 10m

2 stops

BEG10:55 pmBelgrade Nikola Tesla

Nov 3

BEG6:00 amBelgrade Nikola Tesla

24h 39m

2 stops

STL11:39 pmLambert-St Louis

$803

Delta

Oct 24

STL5:30 pmLambert-St Louis

36h 25m

2 stops

BEG12:55 pmBelgrade Nikola Tesla

Nov 5

BEG12:35 pmBelgrade Nikola Tesla

35h 19m

2 stops

STL4:54 pmLambert-St Louis

$809

Delta

Aug 19

STL11:13 amLambert-St Louis

17h 42m

2 stops

BEG11:55 amBelgrade Nikola Tesla

Sep 11

BEG6:15 amBelgrade Nikola Tesla

24h 01m

2 stops

STL11:16 pmLambert-St Louis

$852

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 10/21

12:10 pm-12:30 pm

2 stops17h 20m

Belgrade Nikola Tesla

Fri 11/6

6:15 am-1:45 pm

1 stop14h 30m

$781

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 10/21

3:30 pm-4:05 pm

1 stop17h 35m

Belgrade Nikola Tesla

Fri 11/6

6:15 am-1:45 pm

1 stop14h 30m

$791

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 10/21

3:30 pm-4:05 pm

1 stop17h 35m

Belgrade Nikola Tesla

Fri 11/6

6:15 am-1:45 pm

1 stop14h 30m

$794

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 10/21

12:10 pm-4:30 pm

2 stops21h 20m

Belgrade Nikola Tesla

Fri 11/6

9:40 am-3:30 pm

2 stops36h 50m

$801

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 10/21

12:30 pm-11:55 am

2 stops16h 25m

Belgrade Nikola Tesla

Fri 11/6

6:00 am-11:39 pm

2 stops24h 39m

$803

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Sat 10/24

5:30 pm-12:55 pm

2 stops36h 25m

Belgrade Nikola Tesla

Thu 11/5

12:35 pm-4:54 pm

2 stops35h 19m

$809

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Sun 10/18

3:30 pm-12:45 pm

1 stop14h 15m

Belgrade Nikola Tesla

Fri 11/6

6:15 am-1:45 pm

1 stop14h 30m

$810

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Sun 10/18

12:10 pm-12:45 pm

2 stops17h 35m

Belgrade Nikola Tesla

Fri 11/6

6:15 am-1:45 pm

1 stop14h 30m

$813

Quickest round-trip

ChicagoBelgrade

ORD - BEG

ORDBEG

Chicago O'Hare Intl

Sun 8/9

9:50 pm-4:35 pm

1 stop11h 45m

Belgrade Nikola Tesla

Wed 8/26

2:00 pm-7:50 pm

1 stop12h 50m

$882

ChicagoBelgrade

ORD - BEG

ORDBEG

Chicago O'Hare Intl

Wed 9/2

9:50 am-12:30 pm

2 stops19h 40m

Belgrade Nikola Tesla

Mon 9/7

2:10 pm-7:48 pm

2 stops36h 38m

$886

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 Serbia

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

Other information

What is the cheapest month to fly to Serbia?

The cheapest month to fly to Serbia from Illinois is in December. Flight prices, which tend to average around $440, are often lower during this time because this is during the off-season. If you are unable to visit Serbia during the month of December, then departing from Illinois during the month January is also very affordable. Most momondo users find prices during this month for around $484.

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

According to our data, Thursday is the cheapest day to fly to Serbia from Illinois. The lowest ticket price found for a Thursday departure recently was $875. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Serbia is Monday, with ticket prices averaging around $971.

What is the cheapest Illinois to Serbia flight route?

Fly from Chicago O'Hare Intl to Belgrade Nikola Tesla for the best Illinois - Serbia flight prices

How far in advance should I book a flight from Illinois to Serbia?

You are more likely to see cheaper flights to Serbia from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Serbia for around $910 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Serbia from Illinois for as low as $794 on momondo.

What cabin class options are available on Illinois to Serbia flights?

There are 2 cabin classes available to choose from on Illinois to Serbia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Serbia flights?

You could potentially save up to 10% on your flight if you consider stops on a Illinois to Serbia flight.

Cheap Illinois to Serbia flight deals and tips

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

Best Price Found	$643
Fastest flight time	9h 40m
Direct flights	Tue, Thu and Sun
Airports in Serbia	5 airports

The best one-way flight to Serbia from Illinois in the past 72 hours is $643. The best round-trip flight deal from Illinois to Serbia found on momondo in the last 72 hours is $1,042.

The fastest flight from Illinois to Serbia takes 9h 40m

Direct flights go from Illinois to Serbia on Tuesday, Thursday and Sunday. There are no airlines offering direct flights.

There are 5 airports in Serbia. From Illinois there are direct flights to Belgrade Nikola Tesla (BEG).

Search flight deals

Frequently asked questions about flying from Illinois to Serbia

When did momondo last update prices for flights from Illinois to Serbia?
Prices for flights from Illinois to Serbia are updated daily.
How many operators does momondo search for flights from Illinois to Serbia?
As of June 2026, there are 11 operators available to choose from for flights from Illinois to Serbia.
How old do you have to be to fly from Illinois to Serbia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Serbia.
What documentation or ID do you need to fly to Serbia?
The travel and health documents required for your trip to Serbia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Serbia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Illinois to Serbia?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Serbia is Airbus A330-200, representing 62.59% of all bookings. The subsequent popular models are Boeing 787 Dreamliner at 8.94%, Boeing 787-10 Dreamliner at 6.26%, and Boeing 787-9 Dreamliner at 5.51%.

Best airlines flying from Illinois to Serbia

Compare and see reviews for airlines that fly from Illinois to Serbia with momondo

Airline	Rating	Free Cancellation	Price
Turkish Airlines	PriceFrom $520	Free Cancellation	Rating 7.4 4,409 reviews	Search Turkish Airlines flights
SWISS	PriceFrom $546	Free Cancellation	Rating 7.5 1,968 reviews	Search SWISS flights
KLM	PriceFrom $547	Free Cancellation	Rating 7.8 1,528 reviews	Search KLM flights
Delta	PriceFrom $548	Free Cancellation	Rating 7.9 8,396 reviews	Search Delta flights
United Airlines	PriceFrom $567	Free Cancellation	Rating 7.4 9,830 reviews	Search United Airlines flights
LOT	PriceFrom $570	Free Cancellation	Rating 7.5 1,197 reviews	Search LOT flights
Austrian Airlines	PriceFrom $589	Free Cancellation	Rating 7.6 935 reviews	Search Austrian Airlines flights
JetBlue	PriceFrom $717	Free Cancellation	Rating 7.1 2,981 reviews	Search JetBlue flights
Lufthansa	PriceFrom $753	Free Cancellation	Rating 6.8 8,061 reviews	Search Lufthansa flights
Air Serbia	PriceFrom $836	Free Cancellation	Rating 6.1 231 reviews	Search Air Serbia flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Serbia for you.

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

Yes. momondo allows you to filter the results for Illinois to Serbia flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Serbia from Illinois.

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

If you are simply researching potential flights to Serbia, momondo offers a useful price alert feature which will track prices for flights to Serbia from Illinois and alert you when they change.

An easier way to manage your Serbia 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.

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Flights to Nišfrom $993

Cheap flights from Illinois to Serbia from $423

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 Serbia departing on 7/10. 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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Lufthansa flights from Illinois to Serbia

Our best Lufthansa deals on Illinois to Serbia flight tickets

Delta flights from Illinois to Serbia

Our best Delta deals on Illinois to Serbia flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Serbia that are best for you.

See travel insights to Serbia from

How to get the cheapest flight ticket from Illinois to Serbia

What is the cheapest month to fly to Serbia?

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

What is the cheapest Illinois to Serbia flight route?

How far in advance should I book a flight from Illinois to Serbia?

What cabin class options are available on Illinois to Serbia flights?

Can stopping save me money on Illinois to Serbia flights?

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

What airlines fly to Serbia?

How many flights depart from Illinois to Serbia on average per week?

Cheap Illinois to Serbia flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Serbia

Frequently asked questions about flying from Illinois to Serbia

Best airlines flying from Illinois to Serbia

Compare and see reviews for airlines that fly from Illinois to Serbia with momondo

Why use momondo?

An easier way to manage your Serbia 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Serbia

Popular cities in Serbia

Popular flights according to clicks in the last 7 days on momondo

Illinois flight routes

According to popular flight searches on momondo this year

Serbia flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Serbia

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Serbia

List of cabin classes available on flights landing in Serbia. Availability may vary depending on flight origin and airline.

Complete your trip to Serbia

Explore popular destinations other users love

According to popular flight searches on momondo this year