HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Southeast Europe

$289+ Cheap flights from Illinois to Southeast Europe

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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ATH
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Southeast Europe with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Southeast Europe

Keep the following information in mind while searching for Illinois to Southeast Europe flight deals. Data was last updated April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$597
(Scandinavian Airlines)

One-way from

$303
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$711
Provider with most accurate pricing for Chicago (CHI)-Athens Eleftherios V. flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Athens Eleftherios V. flights.
Search Deals
From Illinois to Southeast Europe
Search Deals
One-way flight from Illinois to Southeast Europe
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($328 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Illinois to Southeast Europe

Cheapest flights from Illinois to Southeast Europe
Explore the most affordable flight options available from Illinois to Southeast Europe. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This FlightHub deal was found by Cheapflights users on 4/29. 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.
Thu 9/2511:25 amORD - LJU
1 stop24h 50mTurkish Airlines
Thu 10/29:25 amLJU - ORD
1 stop31h 15mTurkish Airlines
Deal found 4/29$573
This Scandinavian Airlines deal was found by Cheapflights users on 4/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/307:15 pmORD - OTP
1 stop17h 20mScandinavian Airlines
Wed 9/178:35 pmOTP - ORD
1 stop27h 35mScandinavian Airlines
Deal found 4/29$597
This oojo deal was found by Cheapflights users on 4/29. 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.
Tue 9/211:25 amORD - OTP
1 stop12h 45mTurkish Airlines
Tue 9/99:30 amOTP - ORD
1 stop32h 10mTurkish Airlines
Deal found 4/29$602
This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:00 pmORD - OTP
1 stop13h 55mMultiple Airlines
Sun 11/97:40 amOTP - ORD
2 stops20h 05mMultiple Airlines
Deal found 4/29$610
This Air Serbia deal was found by Cheapflights users on 4/29. 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 Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1210:55 pmORD - LJU
1 stop32h 30mAir Serbia
Wed 11/199:45 amLJU - ORD
1 stop18h 25mAir Serbia
Deal found 4/29$615
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/75:40 pmORD - OTP
1 stop12h 50mAmerican Airlines
Fri 11/78:05 amOTP - ORD
1 stop15h 20mAmerican Airlines
Deal found 4/29$618
This FlightHub deal was found by Cheapflights users on 4/28. 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.
Mon 9/2911:25 amORD - SOF
1 stop13h 10mTurkish Airlines
Tue 10/79:15 pmSOF - ORD
1 stop20h 25mTurkish Airlines
Deal found 4/28$621
This CrystalTravel deal was found by Cheapflights users on 4/29. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/43:35 pmORD - SOF
1 stop12h 25mLufthansa
Mon 8/257:25 pmSOF - ORD
1 stop25h 05mLufthansa
Deal found 4/29$627
This SWISS deal was found by Cheapflights users on 4/29. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/202:20 pmORD - OTP
1 stop17h 00mSWISS
Mon 8/184:10 pmOTP - ORD
1 stop28h 00mSWISS
Deal found 4/29$627
This Gotogate deal was found by Cheapflights users on 4/28. 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.
Fri 11/2811:20 amORD - SOF
2 stops18h 15mMultiple Airlines
Thu 1/294:00 pmSOF - ORD
1 stop32h 15mMultiple Airlines
Deal found 4/28$628
This British Airways deal was found by Cheapflights users on 4/29. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/73:01 pmORD - OTP
2 stops15h 29mBritish Airways
Fri 11/78:05 amOTP - ORD
2 stops19h 15mBritish Airways
Deal found 4/29$631
This Air Serbia deal was found by Cheapflights users on 4/28. 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 Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/174:30 pmORD - SOF
1 stop15h 05mAir Serbia
Tue 9/304:05 pmSOF - ORD
1 stop30h 20mAir Serbia
Deal found 4/28$635

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Southeast Europe 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 April 30, 2025.
Use the filters below to find and compare flights from Illinois to Southeast Europe that are best for you.

Fly from

Illinois

Fly to

Southeast Europe

Route

Depart

Return

Price

ChicagoLjubljana

ORD - LJU

ORDLJU

Chicago O'Hare Intl

Thu 9/25

11:25 am-7:15 pm

1 stop24h 50m

Ljubljana Joze Pucnik

Thu 10/2

9:25 am-9:40 am

1 stop31h 15m

$573

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sat 8/30

7:15 pm-8:35 pm

1 stop17h 20m

Bucharest Otopeni Intl

Wed 9/17

8:35 pm-4:10 pm

1 stop27h 35m

$597

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Tue 9/2

11:25 am-8:10 am

1 stop12h 45m

Bucharest Otopeni Intl

Tue 9/9

9:30 am-9:40 am

1 stop32h 10m

$602

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sun 10/26

6:00 pm-2:55 pm

1 stop13h 55m

Bucharest Otopeni Intl

Sun 11/9

7:40 am-7:45 pm

2 stops20h 05m

$610

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sun 10/26

7:45 pm-11:45 pm

1 stop21h 00m

Bucharest Otopeni Intl

Sun 11/9

7:40 am-3:25 pm

1 stop15h 45m

$618

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 9/29

11:25 am-8:35 am

1 stop13h 10m

Sofia

Tue 10/7

9:15 pm-9:40 am

1 stop20h 25m

$621

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 8/4

3:35 pm-12:00 pm

1 stop12h 25m

Sofia

Mon 8/25

7:25 pm-12:30 pm

1 stop25h 05m

$627

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sun 7/20

2:20 pm-3:20 pm

1 stop17h 00m

Bucharest Otopeni Intl

Mon 8/18

4:10 pm-12:10 pm

1 stop28h 00m

$627

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Sun 10/26

8:25 pm-3:35 pm

2 stops36h 10m

Bucharest Otopeni Intl

Sun 11/9

7:40 am-7:20 pm

2 stops19h 40m

$629

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 8/6

2:20 pm-10:05 am

1 stop11h 45m

Sofia

Tue 8/26

8:00 am-1:20 pm

1 stop13h 20m

$631

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Illinois to Southeast Europe

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

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

Currently, November is the cheapest month in which you can book a flight from Illinois to Southeast Europe (average of $679). Flying from Illinois to Southeast Europe in June is currently the most expensive (average of $1,309). 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 YMH?

Find hourly flight availability from Illinois to Southeast Europe. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

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

Rainfall in Southeast Europe by month

Plan your trip to Southeast Europe by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Southeast Europe ranges from 0.2 - 2.5 inches per month. December is typically the wettest month, when rainfall can reach 2.5 in. June is typically the driest time to visit Southeast Europe when rainfall is around 0.2 in.

Temperature in Southeast Europe by month

Plan your trip to Southeast Europe by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Southeast Europe, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Southeast Europe

Get insights into the airlines that provide service to Southeast Europe. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Europe. Reviews last updated April 30, 2025.
Read through reviews of airlines operating flights from Illinois to Southeast Europe, such as Singapore Airlines, Delta and KLM. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SEA - SIN

Sin to amd was not good flight. Food was bad. It was like few days old.
Singapore Airlines
8.1
Very good
1,292 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SEA - SIN

Sin to amd was not good flight. Food was bad. It was like few days old.
Delta
8.0
Very good
7,936 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SEA - SIN

Sin to amd was not good flight. Food was bad. It was like few days old.
KLM
7.8
Good
1,333 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SEA - SIN

Sin to amd was not good flight. Food was bad. It was like few days old.
LOT
7.6
Good
1,069 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SEA - SIN

Sin to amd was not good flight. Food was bad. It was like few days old.
Finnair
7.6
Good
1,273 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SEA - SIN

Sin to amd was not good flight. Food was bad. It was like few days old.

Related info for your journey

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

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

    One-way options have recently been found by users for as low as $334 on Turkish Airlines. Other airlines that offer cheap prices include Air Serbia from $370 and Scandinavian Airlines from $463 one-way.

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

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

  • How can I find direct flights from Illinois to Southeast Europe?

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

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

    Yes. Cheapflights offers flight deals from Illinois to Southeast Europe 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 Southeast Europe?

    Currently, November is the cheapest month in which you can book a flight from Illinois to Southeast Europe (average of $679). Flying from Illinois to Southeast Europe in June is currently the most expensive (average of $1,309). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Southeast Europe

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Gatwick flights
Newark to Leonardo da Vinci/Fiumicino flights
Newark to Athens flights
John F Kennedy Intl to Lisbon flights
LaGuardia to Heathrow flights
John F Kennedy Intl to Athens flights
John F Kennedy Intl to Istanbul flights
John F Kennedy Intl to Orly flights
Boston to Heathrow flights
John F Kennedy Intl to London City flights
Dulles Intl to Heathrow flights
Newark to Gatwick flights
Newark to Barcelona-El Prat flights
LaGuardia to Charles de Gaulle flights
Los Angeles to Heathrow flights
Newark to Lisbon flights
John F Kennedy Intl to Malpensa flights
Newark to Orly flights
Miami to Madrid flights
John F Kennedy Intl to Barcelona-El Prat flights
San Francisco to Heathrow flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Seattle to Heathrow flights
Dulles Intl to Charles de Gaulle flights
LaGuardia to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Athens flights
Boston to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Madrid flights
Newark to Madrid flights
Newark to Malpensa flights
O'Hare Intl to Heathrow flights
Baltimore to Heathrow flights
O'Hare Intl to Charles de Gaulle flights
LaGuardia to Gatwick flights
Dallas/Fort Worth to Heathrow flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Newark to Dublin flights
John F Kennedy Intl to Dublin flights
Boston to Charles de Gaulle flights
LaGuardia to Athens flights
Dallas/Fort Worth to Charles de Gaulle flights
Boston to Gatwick flights
Newark to London City flights
San Francisco to Leonardo da Vinci/Fiumicino flights
Atlanta to Heathrow flights

Top 10 airlines flying from Illinois to Southeast Europe

Discover the top 10 airlines that operate flights from Illinois to Southeast Europe. 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$326Average$832FlexibilityNo cancel feeOn-time77%
Air SerbiaCheapest$424Average$961FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$467Average$965FlexibilityNo cancel feeOn-time79%
Turkish AirlinesCheapest$498Average$732FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$517Average$954FlexibilityNo cancel feeOn-time78%
Air FranceCheapest$517Average$906FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$529Average$958FlexibilityNo cancel feeOn-time70%
LOTCheapest$532Average$886FlexibilityNo cancel feeOn-time81%
JetBlueCheapest$542Average$1,203FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$546Average$979FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.