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$286+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BEG
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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Cheap flight deals from Illinois to Serbia

Keep the following information in mind while searching for Illinois to Serbia flight deals. Data was last updated septiembre 15, 2025.

Round-trip from

$586
(Gotogate)

One-way from

$286
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$800

Good round-trip deal

$752 or less

Good one-way deal

$419 or less
From Illinois to Serbia
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One-way flight from Illinois to Serbia
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Highest demand for flights based on searches. 27% potential increase in price ($303 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Illinois to Serbia.
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Price to beat on a one-way flight from Illinois to Serbia.
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Find 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 septiembre 15, 2025.

This Flighttix deal was found by Cheapflights users on 9/13. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/284:05 pmSTL - BEG
2 stops14h 40mMultiple Airlines
mar. 11/46:15 pmBEG - STL
2 stops36h 29mMultiple Airlines
Deal found 9/13$582
This Gotogate deal was found by Cheapflights users on 9/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/199:15 amSTL - BEG
2 stops20h 00mAir Canada
mar. 11/41:50 pmBEG - STL
2 stops32h 39mAir Canada
Deal found 9/14$586
This Flighttix deal was found by Cheapflights users on 9/14. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/193:30 pmSTL - BEG
1 stop14h 40mUnited Airlines
mar. 11/46:10 amBEG - STL
2 stops24h 34mUnited Airlines
Deal found 9/14$589
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/119:40 pmORD - BEG
1 stop32h 40mLOT
dom. 10/192:00 pmBEG - ORD
2 stops32h 10mLOT
Deal found 9/14$636
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/209:55 pmORD - BEG
1 stop11h 40mLOT
dom. 11/231:55 pmBEG - ORD
2 stops37h 00mLOT
Deal found 9/14$637
This FlightHub deal was found by Cheapflights users on 9/12. 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.
mar. 10/79:40 pmORD - BEG
1 stop11h 55mLOT
mié. 10/225:15 pmBEG - ORD
2 stops52h 40mLOT
Deal found 9/12$638
This LOT deal was found by Cheapflights users on 9/13. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/99:55 pmORD - BEG
2 stops32h 20mLOT
mié. 11/261:55 pmBEG - ORD
1 stop13h 05mLOT
Deal found 9/13$642
This LOT deal was found by Cheapflights users on 9/13. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/49:55 pmORD - BEG
1 stop32h 20mLOT
sáb. 2/75:15 pmBEG - ORD
2 stops57h 40mLOT
Deal found 9/13$643
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
mié. 10/89:40 pmORD - BEG
1 stop11h 55mLOT
mié. 10/225:15 pmBEG - ORD
1 stop33h 25mLOT
Deal found 9/12$645
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/95:10 pmORD - BEG
2 stops37h 10mLOT
dom. 10/192:00 pmBEG - ORD
2 stops32h 10mLOT
Deal found 9/14$646
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/812:25 pmSTL - BEG
2 stops20h 30mLufthansa
mié. 10/156:05 amBEG - STL
2 stops16h 39mLufthansa
Deal found 9/13$648
This Gotogate deal was found by Cheapflights users on 9/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/81:30 pmSTL - BEG
2 stops19h 25mMultiple Airlines
mié. 10/156:05 amBEG - STL
2 stops16h 39mMultiple Airlines
Deal found 9/13$649

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 septiembre 15, 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

mar. 10/28

4:05 pm-12:45 pm

2 stops14h 40m

Belgrade Nikola Tesla

mar. 11/4

6:15 pm-11:44 pm

2 stops36h 29m

$582

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

dom. 10/19

9:15 am-12:15 pm

2 stops20h 00m

Belgrade Nikola Tesla

mar. 11/4

1:50 pm-3:29 pm

2 stops32h 39m

$586

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

dom. 10/19

3:30 pm-1:10 pm

1 stop14h 40m

Belgrade Nikola Tesla

mar. 11/4

6:10 am-11:44 pm

2 stops24h 34m

$589

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

mié. 10/8

12:25 pm-3:55 pm

2 stops20h 30m

Belgrade Nikola Tesla

mié. 10/15

6:05 am-3:44 pm

2 stops16h 39m

$648

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

mié. 10/8

1:30 pm-3:55 pm

2 stops19h 25m

Belgrade Nikola Tesla

mié. 10/15

6:05 am-3:44 pm

2 stops16h 39m

$649

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

mié. 12/3

6:30 am-12:50 pm

2 stops23h 20m

Belgrade Nikola Tesla

dom. 12/7

6:15 am-1:55 pm

1 stop14h 40m

$656

ChicagoBelgrade

ORD - BEG

ORDBEG

Chicago O'Hare Intl

lun. 1/12

9:00 am-11:50 am

2 stops19h 50m

Belgrade Nikola Tesla

lun. 1/26

7:05 am-6:34 pm

2 stops18h 29m

$668

ChicagoBelgrade

ORD - BEG

ORDBEG

Chicago O'Hare Intl

mar. 10/14

7:05 pm-7:10 pm

1 stop17h 05m

Belgrade Nikola Tesla

mié. 11/5

9:40 am-4:20 pm

1 stop13h 40m

$678

ChicagoBelgrade

ORD - BEG

ORDBEG

Chicago O'Hare Intl

mié. 1/7

4:20 pm-12:50 pm

1 stop13h 30m

Belgrade Nikola Tesla

vie. 1/16

6:15 am-2:55 pm

2 stops15h 40m

$692

ChicagoBelgrade

ORD - BEG

ORDBEG

Chicago O'Hare Intl

mié. 10/29

6:45 am-11:50 am

2 stops23h 05m

Belgrade Nikola Tesla

mié. 11/5

7:05 am-8:52 pm

2 stops20h 47m

$692

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 58 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, January is the cheapest month in which you can book a flight from Illinois to Serbia (average of $688). Flying from Illinois to Serbia in June is currently the most expensive (average of $1,173). 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 septiembre 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Serbia as you normally would.

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?

    Air Canada, United Airlines, and SWISS can get you from Illinois to Serbia in just under 14h 40m. Your travel time can differ by up to 5h 20m. Illinois and Serbia are separated by a distance of 5231 mi. This flight may include one or multiple stops.

  • 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, January is the cheapest month in which you can book a flight from Illinois to Serbia (average of $688). Flying from Illinois to Serbia in June is currently the most expensive (average of $1,173). 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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$511Average$907FlexibilityNo cancel feeOn-time79%
Turkish AirlinesCheapest$515Average$620FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$564Average$790FlexibilityNo cancel feeOn-time78%
LOTCheapest$579Average$837FlexibilityNo cancel feeOn-time81%
KLMCheapest$588Average$760FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$592Average$860FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$599Average$941FlexibilityNo cancel feeOn-time76%
JetBlueCheapest$717Average$1,124FlexibilityNo cancel feeOn-time62%
Air SerbiaCheapest$813Average$1,000FlexibilityNo cancel feeOn-timeN/A
ITA AirwaysCheapest$991Average$1,172FlexibilityNo cancel feeOn-time81%

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