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$388+ Cheap flights from Illinois to Serbia

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 4/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BEG
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Cheap flight deals from Illinois to Serbia

Cheapest flights from Illinois to Serbia
Explore the most affordable flight options available from Illinois to Serbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 16, 2025.

This FlightHub deal was found by Cheapflights users on 12/16. 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.
Wed 12/3111:50 amORD - BEG
1 stop22h 25mMultiple Airlines
Wed 2/188:15 pmBEG - ORD
1 stop20h 50mMultiple Airlines
Deal found 12/16$678
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/303:45 pmORD - BEG
2 stops39h 00mSWISS
Mon 2/29:40 amBEG - ORD
1 stop13h 40mSWISS
Deal found 12/16$751
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:50 pmORD - BEG
1 stop12h 15mMultiple Airlines
Wed 1/149:40 amBEG - ORD
1 stop13h 40mMultiple Airlines
Deal found 12/16$756
This Justfly.com deal was found by Cheapflights users on 12/16. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:50 amORD - BEG
1 stop34h 10mMultiple Airlines
Mon 2/28:15 pmBEG - ORD
1 stop29h 10mMultiple Airlines
Deal found 12/16$758
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:05 pmORD - BEG
2 stops19h 25mMultiple Airlines
Tue 1/131:30 pmBEG - ORD
1 stop31h 40mMultiple Airlines
Deal found 12/16$759
This FlightHub deal was found by Cheapflights users on 12/16. 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 12/308:20 pmORD - BEG
1 stop25h 40mMultiple Airlines
Tue 2/33:15 pmBEG - ORD
1 stop25h 50mMultiple Airlines
Deal found 12/16$760
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:24 pmORD - BEG
2 stops14h 06mMultiple Airlines
Sun 2/19:40 amBEG - ORD
1 stop13h 40mMultiple Airlines
Deal found 12/16$764
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:10 pmORD - BEG
2 stops35h 20mMultiple Airlines
Tue 1/131:30 pmBEG - ORD
1 stop31h 40mMultiple Airlines
Deal found 12/15$767
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:50 pmORD - BEG
1 stop11h 55mSWISS
Sat 1/179:40 amBEG - ORD
1 stop13h 40mSWISS
Deal found 12/15$769
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:29 amMDW - BEG
2 stops30h 56mDelta
Fri 1/306:05 amBEG - MDW
2 stops19h 31mDelta
Deal found 12/16$808
This Flysmarter deal was found by Cheapflights users on 12/16. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:45 pmMDW - BEG
2 stops16h 10mMultiple Airlines
Mon 2/26:30 amBEG - MDW
2 stops17h 59mMultiple Airlines
Deal found 12/16$1,032
This Delta deal was found by Cheapflights users on 12/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/259:29 amMDW - BEG
2 stops30h 56mDelta
Thu 1/296:05 amBEG - MDW
2 stops18h 50mDelta
Deal found 12/15$1,293

Find flight deals from Illinois to Serbia

Keep the following information in mind while searching for Illinois to Serbia flight deals. Data was last updated December 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$547
(FlightHub)

One-way from

$388
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$987

Good round-trip deal

$723 or less

Good one-way deal

$382 or less
Provider with most accurate pricing for Chicago (CHI)-Belgrade Nikola Tesla flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Belgrade Nikola Tesla flights.
Search Deals
From Illinois to Serbia
Search Deals
One-way flight from Illinois to Serbia
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($275 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Serbia.
Search Deals
Price to beat on a one-way flight from Illinois to Serbia.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Serbia 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 December 16, 2025.
Use the filters below to find and compare flights from Illinois to Serbia that are best for you.

Fly from

Illinois

Fly to

Serbia

Route

Depart

Return

Price

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 1/14

11:22 am-12:45 pm

2 stops18h 23m

Belgrade Nikola Tesla

Wed 1/21

1:30 pm-11:59 pm

2 stops17h 29m

$547

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Sun 1/11

6:35 am-11:55 am

2 stops22h 20m

Belgrade Nikola Tesla

Sun 1/18

6:05 am-11:25 pm

2 stops24h 20m

$730

ChicagoBelgrade

MDW - BEG

MDWBEG

Chicago Midway

Tue 4/14

9:30 am-12:00 pm

2 stops19h 30m

Belgrade Nikola Tesla

Tue 4/21

6:00 am-6:31 pm

2 stops19h 31m

$766

ChicagoBelgrade

ORD - BEG

ORDBEG

Chicago O'Hare Intl

Sun 2/8

12:30 pm-11:55 am

2 stops16h 25m

Belgrade Nikola Tesla

Sat 3/7

6:05 am-6:01 pm

2 stops18h 56m

$775

ChicagoBelgrade

MDW - BEG

MDWBEG

Chicago Midway

Thu 3/12

9:32 am-11:55 am

2 stops20h 23m

Belgrade Nikola Tesla

Tue 3/31

6:00 am-4:53 pm

2 stops17h 53m

$775

ChicagoBelgrade

ORD - BEG

ORDBEG

Chicago O'Hare Intl

Thu 1/15

11:05 am-11:55 am

2 stops17h 50m

Belgrade Nikola Tesla

Thu 1/22

6:05 am-4:38 pm

2 stops17h 33m

$787

ChicagoBelgrade

ORD - BEG

ORDBEG

Chicago O'Hare Intl

Thu 1/8

1:57 pm-11:55 am

2 stops14h 58m

Belgrade Nikola Tesla

Thu 1/15

12:35 pm-2:20 pm

1 stop32h 45m

$787

ChicagoBelgrade

MDW - BEG

MDWBEG

Chicago Midway

Sun 2/1

1:26 pm-11:55 am

2 stops15h 29m

Belgrade Nikola Tesla

Wed 2/25

6:05 am-6:37 pm

2 stops19h 32m

$787

ChicagoBelgrade

ORD - BEG

ORDBEG

Chicago O'Hare Intl

Thu 1/8

1:57 pm-11:55 am

2 stops14h 58m

Belgrade Nikola Tesla

Fri 1/16

5:50 pm-2:20 pm

1 stop27h 30m

$787

ChicagoBelgrade

MDW - BEG

MDWBEG

Chicago Midway

Thu 1/15

9:32 am-11:55 am

2 stops19h 23m

Belgrade Nikola Tesla

Fri 3/6

6:05 am-10:42 pm

2 stops23h 37m

$787

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 50 results
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Best time to book a flight from Illinois to Serbia

Have a flexible travel schedule? Discover the best time to fly to Serbia 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 Serbia

What is the cheapest month to book a flight from Illinois to Serbia?

Currently, March is the cheapest month in which you can book a flight from Illinois to Serbia (average of $500). Flying from Illinois to Serbia in June is currently the most expensive (average of $994). 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.

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

Find hourly flight availability from Illinois to Serbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 16, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 41% on flights from Illinois to Serbia by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Illinois to Serbia?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Serbia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Serbia flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Serbia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Serbia?

    Lufthansa, Delta, and KLM can get you from Illinois to Serbia in just under 16h 25m. Your travel time can differ by up to 3h 05m. Illinois and Serbia are separated by a distance of 4981 mi. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from Illinois to Serbia are JetBlue ($261), Air Serbia ($311), and Turkish Airlines ($392).

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Illinois to Serbia (average of $500). Flying from Illinois to Serbia in June is currently the most expensive (average of $994). 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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Alternative routes for Illinois to Serbia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Serbia

Discover the top 10 airlines that operate flights from Illinois to Serbia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$512Average$632FlexibilityNo cancel feeOn-time77%
SWISSCheapest$545Average$885FlexibilityNo cancel feeOn-time79%
KLMCheapest$547Average$919FlexibilityNo cancel feeOn-time75%
DeltaCheapest$548Average$816FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$567Average$862FlexibilityNo cancel feeOn-time69%
LOTCheapest$579Average$820FlexibilityNo cancel feeOn-time81%
Austrian AirlinesCheapest$589Average$864FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$663Average$948FlexibilityNo cancel feeOn-time76%
JetBlueCheapest$744Average$1,043FlexibilityNo cancel feeOn-time62%
Air SerbiaCheapest$819Average$988FlexibilityNo cancel feeOn-timeN/A

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