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Cheap flights from Chicago O'Hare Intl Airport to Southeast Europe from $223

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Southeast Europe departing on 10/8. 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 Chicago O'Hare Intl Airport to Southeast Europe

Cheap round-trip flights

Turkish Airlines Logo
11:25 am - 2:45 pmORD-SOF
19h 20m1 stop
Turkish Airlines Logo
9:15 pm - 9:40 amSOF-ORD
20h 25m1 stop
$546Turkish Airlines
Find Deal
Mon, Sep 29 - Wed, Oct 8
Turkish Airlines Logo
11:45 pm - 8:35 amORD-SOF
24h 50m1 stop
Turkish Airlines Logo
9:25 am - 9:40 amSOF-ORD
32h 15m1 stop
$548Turkish Airlines
Find Deal
Sat, Sep 13 - Sat, Oct 11
LOT Logo
9:40 pm - 5:45 pmORD-OTP
12h 05m1 stop
LOT Logo
6:25 pm - 9:00 pmOTP-ORD
33h 35m1 stop
$556LOT
Find Deal
Tue, Oct 7 - Fri, Oct 31
Lufthansa Logo
9:40 pm - 6:35 pmORD-OTP
12h 55m1 stop
Lufthansa Logo
5:55 am - 1:10 pmOTP-ORD
15h 15m1 stop
$563Lufthansa
Find Deal
Tue, Oct 14 - Sat, Nov 8
United Airlines Logo
8:40 am - 2:00 pmORD-ATH
21h 20m1 stop
United Airlines Logo
3:30 pm - 3:04 pmATH-ORD
31h 34m1 stop
$568United Airlines
Find Deal
Wed, Sep 3 - Wed, Sep 17
LOT Logo
9:55 pm - 5:40 pmORD-OTP
11h 45m1 stop
LOT Logo
6:25 pm - 8:00 pmOTP-ORD
33h 35m1 stop
$571LOT
Find Deal
Mon, Feb 16 - Mon, Mar 2
United Airlines Logo
3:50 pm - 1:30 pmORD-ATH
13h 40m1 stop
United Airlines Logo
1:10 pm - 6:54 pmATH-ORD
37h 44m2 stops
$574United Airlines
Find Deal
Mon, Sep 8 - Tue, Sep 16
Lufthansa Logo
10:35 pm - 10:50 pmORD-TIA
17h 15m1 stop
Lufthansa Logo
6:05 am - 6:19 pmTIA-ORD
19h 14m2 stops
$586Lufthansa
Find Deal
Thu, Nov 6 - Tue, Nov 18
Austrian Airlines Logo
12:55 pm - 11:40 pmORD-ATH
26h 45m2 stops
Austrian Airlines Logo
1:35 pm - 1:20 pmATH-ORD
31h 45m1 stop
$588Austrian Airlines
Find Deal
Wed, Oct 1 - Wed, Oct 8
Austrian Airlines Logo
12:55 pm - 12:45 pmORD-ATH
15h 50m2 stops
Austrian Airlines Logo
6:30 am - 1:20 pmATH-ORD
14h 50m1 stop
$592Austrian Airlines
Find Deal
Tue, Sep 30 - Fri, Oct 10

SWISS flights from Chicago O'Hare Intl Airport to Southeast Europe

Our best SWISS deals on Chicago O'Hare Intl Airport to Southeast Europe flight tickets
SWISS
Sep 2
ORD7:05 pmChicago O'Hare Intl
21h 50m
1 stop
ATH12:55 amAthens Eleftherios V.
Sep 9
ATH6:55 amAthens Eleftherios V.
17h 00m
1 stop
ORD3:55 pmChicago O'Hare Intl
$581
Find similar
SWISS
Oct 7
ORD7:05 pmChicago O'Hare Intl
12h 15m
1 stop
OTP3:20 pmBucharest Otopeni Intl
Nov 1
OTP4:40 pmBucharest Otopeni Intl
31h 40m
1 stop
ORD5:20 pmChicago O'Hare Intl
$594
Find similar
SWISS
Oct 14
ORD7:05 pmChicago O'Hare Intl
12h 40m
1 stop
ATH3:45 pmAthens Eleftherios V.
Oct 30
ATH5:40 pmAthens Eleftherios V.
30h 40m
1 stop
ORD5:20 pmChicago O'Hare Intl
$596
Find similar

British Airways flights from Chicago O'Hare Intl Airport to Southeast Europe

Our best British Airways deals on Chicago O'Hare Intl Airport to Southeast Europe flight tickets
British Airways
Nov 7
ORD5:10 pmChicago O'Hare Intl
22h 15m
1 stop
OTP11:25 pmBucharest Otopeni Intl
Nov 16
OTP7:35 amBucharest Otopeni Intl
14h 15m
1 stop
ORD1:50 pmChicago O'Hare Intl
$577
Find similar
British Airways
Jan 18
ORD5:10 pmChicago O'Hare Intl
13h 45m
1 stop
OTP2:55 pmBucharest Otopeni Intl
Feb 1
OTP7:35 amBucharest Otopeni Intl
19h 10m
1 stop
ORD6:45 pmChicago O'Hare Intl
$578
Find similar
British Airways
Sep 13
ORD4:55 pmChicago O'Hare Intl
13h 05m
1 stop
OTP2:00 pmBucharest Otopeni Intl
Feb 17
OTP8:00 amBucharest Otopeni Intl
18h 45m
1 stop
ORD6:45 pmChicago O'Hare Intl
$579
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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, momondo users made 832,500 searches. Data last updated August 21, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Southeast Europe that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 9/29

11:25 am-2:45 pm

1 stop19h 20m

Sofia

Wed 10/8

9:15 pm-9:40 am

1 stop20h 25m

$546

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 9/13

11:45 pm-8:35 am

1 stop24h 50m

Sofia

Sat 10/11

9:25 am-9:40 am

1 stop32h 15m

$548

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Tue 10/7

9:40 pm-5:45 pm

1 stop12h 05m

Bucharest Otopeni Intl

Fri 10/31

6:25 pm-9:00 pm

1 stop33h 35m

$556

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Tue 10/14

9:40 pm-6:35 pm

1 stop12h 55m

Bucharest Otopeni Intl

Sat 11/8

5:55 am-1:10 pm

1 stop15h 15m

$563

ChicagoAthens

ORD - ATH

ORDATH

Chicago O'Hare Intl

Wed 9/3

8:40 am-2:00 pm

1 stop21h 20m

Athens Eleftherios V.

Wed 9/17

3:30 pm-3:04 pm

1 stop31h 34m

$568

ChicagoBucharest

ORD - OTP

ORDOTP

Chicago O'Hare Intl

Mon 2/16

9:55 pm-5:40 pm

1 stop11h 45m

Bucharest Otopeni Intl

Mon 3/2

6:25 pm-8:00 pm

1 stop33h 35m

$571

ChicagoAthens

ORD - ATH

ORDATH

Chicago O'Hare Intl

Mon 9/8

3:50 pm-1:30 pm

1 stop13h 40m

Athens Eleftherios V.

Tue 9/16

1:10 pm-6:54 pm

2 stops37h 44m

$574

ChicagoTirana

ORD - TIA

ORDTIA

Chicago O'Hare Intl

Thu 11/6

10:35 pm-10:50 pm

1 stop17h 15m

Tirana Rinas

Tue 11/18

6:05 am-6:19 pm

2 stops19h 14m

$586

ChicagoAthens

ORD - ATH

ORDATH

Chicago O'Hare Intl

Wed 10/1

12:55 pm-11:40 pm

2 stops26h 45m

Athens Eleftherios V.

Wed 10/8

1:35 pm-1:20 pm

1 stop31h 45m

$588

ChicagoAthens

ORD - ATH

ORDATH

Chicago O'Hare Intl

Tue 9/30

12:55 pm-12:45 pm

2 stops15h 50m

Athens Eleftherios V.

Fri 10/10

6:30 am-1:20 pm

1 stop14h 50m

$592

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 Southeast Europe from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Southeast Europe

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 month to fly to Southeast Europe?

The month of February is, on average, the cheapest month to fly to Southeast Europe from Chicago O'Hare Intl Airport, with most prices found around $613. If you aren’t able to travel during the month of February, then book flights to Southeast Europe from Chicago O'Hare Intl Airport during January instead. Flights to Southeast Europe in January, while not as cheap as those in February, still average around $615.

What is the cheapest day to depart on your flight to Southeast Europe?

On average, the least expensive day to fly to Southeast Europe from Chicago O'Hare Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,190. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Chicago O'Hare Intl Airport to Southeast Europe for around $1,339.

What is the cheapest time of day to depart on your flight to Southeast Europe?

Our most recent data shows that the best time of day to fly to Southeast Europe is in the morning. Flights from Chicago O'Hare Intl Airport to Southeast Europe during this time can be as low as $795. In contrast, the most expensive time of day to depart to Southeast Europe is in the afternoon when prices are around $1,260.

What is the cheapest Chicago O'Hare Intl to Southeast Europe flight route?

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

How far in advance should I book a flight to Southeast Europe?

You are more likely to see cheaper flights to Southeast Europe from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Europe for around $859 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Europe from Chicago O'Hare Intl Airport for as low as $809 on momondo.

What cabin class options are available on Chicago O'Hare Intl to Southeast Europe flights?

There are 3 cabin classes available to choose from on Chicago O'Hare Intl to Southeast Europe 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 Chicago O'Hare Intl Airport to Southeast Europe flights?

No. A direct flight is the cheapest option for a flight between Chicago O'Hare Intl Airport to Southeast Europe.

Cheap Chicago O'Hare Intl Airport to Southeast Europe flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Southeast Europe

Fastest flight time

9h 30m

Direct flights

Every day

Airports in Southeast Europe

2 airports
The fastest flight from Chicago O'Hare Intl Airport to Southeast Europe takes 9h 30m
Direct flights go from Chicago O'Hare Intl Airport to Southeast Europe every day.
There are 2 airports near Southeast Europe: Belgrade Nikola Tesla (BEG), Athens Eleftherios V. (ATH)
Search flight deals

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Southeast Europe?

    Prices for flights from Chicago O'Hare Intl Airport to Southeast Europe are refreshed on a daily basis.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Southeast Europe?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Southeast Europe?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport to Southeast Europe.

  • What documentation or ID do you need to fly to Southeast Europe?

    The necessary travel and health documents for your Southeast Europe trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Chicago O'Hare Intl Airport to Southeast Europe?

Best airlines flying from Chicago O'Hare Intl Airport to Southeast Europe

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Southeast Europe with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $385Free CancellationRating
7.4
1,471 reviews
Search Scandinavian Airlines flights
Air SerbiaPriceFrom $436Free CancellationRating
6.2
198 reviews
Search Air Serbia flights
DeltaPriceFrom $449Free CancellationRating
7.9
7,981 reviews
Search Delta flights
Air FrancePriceFrom $463Free CancellationRating
7.4
1,469 reviews
Search Air France flights
Air CanadaPriceFrom $480Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Virgin AtlanticPriceFrom $484Free CancellationRating
7.4
658 reviews
Search Virgin Atlantic flights
KLMPriceFrom $491Free CancellationRating
7.8
1,388 reviews
Search KLM flights
Turkish AirlinesPriceFrom $495Free CancellationRating
7.3
3,950 reviews
Search Turkish Airlines flights
SWISSPriceFrom $500Free CancellationRating
7.6
1,702 reviews
Search SWISS flights
Austrian AirlinesPriceFrom $517Free CancellationRating
7.6
832 reviews
Search Austrian Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Southeast Europe?

It is quick and easy to find Chicago to Southeast Europe 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 Southeast Europe that suits you.

Can I find flights from Chicago to Southeast Europe with flexible booking policies on momondo?

momondo does allow users to show only those flights to Southeast Europe from Chicago which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Chicago to Southeast Europe?

momondo helps you find the best flight between Chicago and Southeast Europe by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Southeast Europe from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Southeast Europe 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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