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$224+ Cheap flights from O'Hare Intl (ORD) to Sofia (SOF)

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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOF
Apr 1 — Apr 81
Wed 4/1
Wed 4/8
1 adult, Economy
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Cheap flight deals from O'Hare Intl to Sofia

Cheapest flights from O'Hare Intl to Sofia
Explore the most affordable flight options available from O'Hare Intl to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 2, 2026.

This FlightHub deal was found by Cheapflights users on 2/27. 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 4/218:10 pm
ORD
-
SOF
1 stop34h 50m
Turkish Airlines
Tue 4/289:35 am
SOF
-
ORD
1 stop32h 05m
Turkish Airlines
Deal found 2/27$546
This FlightHub deal was found by Cheapflights users on 3/2. 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 4/298:10 pm
ORD
-
SOF
1 stop34h 50m
Turkish Airlines
Wed 5/139:35 am
SOF
-
ORD
1 stop32h 05m
Turkish Airlines
Deal found 3/2$548
This FlightHub deal was found by Cheapflights users on 2/26. 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.
Sun 4/58:10 pm
ORD
-
SOF
1 stop16h 05m
Turkish Airlines
Thu 4/309:35 am
SOF
-
ORD
1 stop32h 05m
Turkish Airlines
Deal found 2/26$562
This oojo deal was found by Cheapflights users on 3/1. 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.
Wed 4/158:10 pm
ORD
-
SOF
1 stop16h 05m
Turkish Airlines
Wed 4/223:50 pm
SOF
-
ORD
1 stop25h 50m
Turkish Airlines
Deal found 3/1$569
This FlightHub deal was found by Cheapflights users on 2/26. 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.
Sun 9/68:10 pm
ORD
-
SOF
1 stop16h 05m
Turkish Airlines
Tue 9/229:35 am
SOF
-
ORD
1 stop32h 05m
Turkish Airlines
Deal found 2/26$570
This FlightHub deal was found by Cheapflights users on 3/1. 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 4/88:10 pm
ORD
-
SOF
1 stop33h 05m
Turkish Airlines
Wed 4/229:35 am
SOF
-
ORD
1 stop32h 05m
Turkish Airlines
Deal found 3/1$572
This FlightHub deal was found by Cheapflights users on 2/28. 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.
Thu 7/308:10 pm
ORD
-
SOF
1 stop16h 05m
Turkish Airlines
Fri 9/182:05 pm
SOF
-
ORD
1 stop27h 35m
Turkish Airlines
Deal found 2/28$575
This FlightHub deal was found by Cheapflights users on 2/26. 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.
Sat 5/28:10 pm
ORD
-
SOF
1 stop16h 05m
Turkish Airlines
Tue 5/123:50 pm
SOF
-
ORD
1 stop25h 50m
Turkish Airlines
Deal found 2/26$576
This oojo deal was found by Cheapflights users on 2/26. 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.
Fri 5/15:10 pm
ORD
-
SOF
1 stop12h 40m
LOT
Mon 5/112:35 pm
SOF
-
ORD
1 stop32h 35m
LOT
Deal found 2/26$578
This CrystalTravel deal was found by Cheapflights users on 3/1. 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.
Fri 5/19:50 pm
ORD
-
SOF
1 stop12h 10m
LOT
Tue 5/122:35 pm
SOF
-
ORD
1 stop13h 15m
LOT
Deal found 3/1$582
This Kiwi.com deal was found by Cheapflights users on 3/1. 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.
Mon 3/1610:55 pm
ORD
-
SOF
1 stop31h 55m
LOT
Tue 3/316:40 pm
SOF
-
ORD
1 stop33h 10m
LOT
Deal found 3/1$584

Find flight deals from O'Hare Intl to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Sofia (SOF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$546
(FlightHub)

One-way from

$224
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$686
Provider with most accurate pricing for Chicago O'Hare Intl-Sofia flight deals.
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Provider most trusted by Cheapflights users for Chicago O'Hare Intl-Sofia flights.
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From Chicago O'Hare Intl to Sofia
Search Deals
One-way flight from Chicago O'Hare Intl to Sofia
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($234 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl to Sofia 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 March 2, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 4/8

2:10 pm-2:00 pm

2 stops15h 50m

Sofia

Wed 4/22

7:00 am-4:42 pm

2 stops17h 42m

$719

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 7/13

4:50 pm-2:00 pm

1 stop13h 10m

Sofia

Wed 8/19

7:00 am-2:30 pm

1 stop15h 30m

$725

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 7/25

3:35 pm-12:10 pm

1 stop12h 35m

Sofia

Thu 8/20

2:10 pm-7:29 am

2 stops25h 19m

$733

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 3/29

2:10 pm-2:00 pm

2 stops15h 50m

Sofia

Thu 4/23

7:00 am-2:15 pm

1 stop15h 15m

$736

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 4/1

2:10 pm-2:00 pm

2 stops15h 50m

Sofia

Wed 4/15

7:00 am-6:13 pm

2 stops19h 13m

$744

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 7/28

2:40 pm-12:10 pm

2 stops13h 30m

Sofia

Tue 8/18

6:10 am-4:55 pm

2 stops18h 45m

$759

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 4/8

2:10 pm-2:00 pm

2 stops15h 50m

Sofia

Sun 4/12

7:00 am-2:15 pm

1 stop15h 15m

$815

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 7/13

1:30 pm-2:00 pm

2 stops16h 30m

Sofia

Mon 8/17

7:00 am-5:41 pm

2 stops18h 41m

$817

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Thu 5/21

9:55 am-1:20 pm

2 stops19h 25m

Sofia

Sat 6/6

6:10 am-7:25 pm

2 stops21h 15m

$825

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 5/18

9:40 pm-11:00 pm

1 stop17h 20m

Sofia

Sun 6/7

6:10 am-12:35 pm

1 stop14h 25m

$826

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/28

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from O'Hare Intl to Sofia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to Sofia in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy1 starTrust Score*2 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-Sofia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-Sofia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-Sofia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-Sofia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from O'Hare Intl to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from O'Hare Intl 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 Chicago O'Hare Intl Airport to Sofia

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Sofia?

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to Sofia. Price data was last updated on February 27, 2026.

The best time to book flights from Chicago O'Hare Intl Airport to Sofia is 46 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Sofia?

Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sofia (average of $472). Flying from Chicago O'Hare Intl Airport to Sofia in June is currently the most expensive (average of $825). 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.

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated March 2, 2026.
Get a feel of what it's like to fly with SWISS, LOT, and United Airlines from Chicago O'Hare Intl Airport to Sofia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.6
Good
1,889 reviews

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Katerina,Sep 2025

GVA - ATH

Although the plane was half empty and the flight was late at night, we were not allowed to change seats/ use empty seats to get ourselves more comfortable, or get some proper sleep. It is really frustrating to see lack of flexibility in such a simple need.
SWISS
7.6
Good
1,889 reviews
SWISS
7.6
Good
1,889 reviews

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Katerina,Sep 2025

GVA - ATH

Although the plane was half empty and the flight was late at night, we were not allowed to change seats/ use empty seats to get ourselves more comfortable, or get some proper sleep. It is really frustrating to see lack of flexibility in such a simple need.
LOT
7.5
Good
1,182 reviews
SWISS
7.6
Good
1,889 reviews

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Katerina,Sep 2025

GVA - ATH

Although the plane was half empty and the flight was late at night, we were not allowed to change seats/ use empty seats to get ourselves more comfortable, or get some proper sleep. It is really frustrating to see lack of flexibility in such a simple need.
United Airlines
7.4
Good
9,375 reviews
SWISS
7.6
Good
1,889 reviews

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Katerina,Sep 2025

GVA - ATH

Although the plane was half empty and the flight was late at night, we were not allowed to change seats/ use empty seats to get ourselves more comfortable, or get some proper sleep. It is really frustrating to see lack of flexibility in such a simple need.
Turkish Airlines
7.3
Good
4,241 reviews
SWISS
7.6
Good
1,889 reviews

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Katerina,Sep 2025

GVA - ATH

Although the plane was half empty and the flight was late at night, we were not allowed to change seats/ use empty seats to get ourselves more comfortable, or get some proper sleep. It is really frustrating to see lack of flexibility in such a simple need.
Lufthansa
6.8
Okay
7,818 reviews
SWISS
7.6
Good
1,889 reviews

Boarding

7.7

Overall

7.6

Crew

8.3

Food

7.1

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Katerina,Sep 2025

GVA - ATH

Although the plane was half empty and the flight was late at night, we were not allowed to change seats/ use empty seats to get ourselves more comfortable, or get some proper sleep. It is really frustrating to see lack of flexibility in such a simple need.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Sofia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sofia from Chicago O'Hare Intl?

    Sofia (SOF) is the airport you will fly into if you book a flight from Chicago O'Hare Intl to Sofia. You should not have trouble finding flights to Sofia from Chicago O'Hare Intl; the airport handles an average of 0 inbound flights from Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 12 airlines have flights to the Sofia airport from Chicago O'Hare Intl. It is only a 4.2 mi journey from Sofia (SOF) to Sofia’s city center.

  • How long is the flight from Chicago O'Hare Intl Airport to Sofia?

    There are many flights that can get you from Chicago O'Hare Intl Airport to Sofia in 12h 35m. Fly via KLM or United Airlines to get the fastest option. Airlines will cover a distance of 5194 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to Sofia round-trip?

    Our cheapest airline available from Chicago O'Hare Intl Airport to Sofia is ITA Airways. Our recent data shows that you can find tickets from as low as $469 on this airline. Additional options worth looking into are Turkish Airlines and KLM, starting at $521 and $533 round-trip. You may be able to fly from Chicago O'Hare Intl Airport to Sofia for 36% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Sofia one-way?

    To fly one-way, consider booking your trip with Turkish Airlines, which is currently one of the cheapest options available, starting at $295. United Airlines flights start at $305 while deals on Air Serbia start at $338 one-way.

  • Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to Sofia?

    Chicago O'Hare Intl Airport to Sofia flights have a layover in Istanbul most often. Munich is the second most popular location for layovers on flights from Chicago O'Hare Intl Airport to Sofia.

  • What are some popular things to do or see while on a layover in Istanbul?

    Istanbul travelers tend to visit Taksim Square, Laleli Camii, and Beyazit Meydani more than anywhere else. Travelers on a layover in Istanbul can visit Taksim Square, Laleli Camii, and Beyazit Meydani, by traveling 20.8 mi, 21.5 mi, and 21.7 mi, respectively after landing at Istanbul. Travelers can book a car rental at Istanbul for about $35 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Munich?

    Munich travelers tend to visit Theresienwiese, Marienplatz, and Altes Rathaus more than any other notable places. Theresienwiese, Marienplatz and Altes Rathaus are located about 18.8 mi, 17.8 mi, and 17.8 mi, respectively from Munich Franz Josef Strauss if you are interested in checking them out. Travelers can book a car rental at Munich Franz Josef Strauss for about $60 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Chicago O'Hare Intl Airport to Sofia flights?

    Chicago O'Hare Intl Airport to Sofia flights that have layovers will least frequently stop in Warsaw.

  • Can I find deals for flights from O'Hare Intl to Sofia that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Sofia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Sofia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Sofia.

  • Can I find deals for business class flights from O'Hare Intl to Sofia?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Sofia 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 Chicago O'Hare Intl Airport to Sofia?

    Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sofia (average of $472). Flying from Chicago O'Hare Intl Airport to Sofia in June is currently the most expensive (average of $825). 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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Top 10 airlines flying from O'Hare Intl to Sofia

Discover the top 10 airlines that operate flights from O'Hare Intl to Sofia. 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 March 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$469Average$973FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$521Average$764FlexibilityNo cancel feeOn-time77%
KLMCheapest$533Average$652FlexibilityNo cancel feeOn-time75%
SWISSCheapest$565Average$808FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$566Average$793FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$585Average$624FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$586Average$876FlexibilityNo cancel feeOn-time76%
LOTCheapest$587Average$886FlexibilityNo cancel feeOn-time81%
Austrian AirlinesCheapest$588Average$904FlexibilityNo cancel feeOn-time78%
British AirwaysCheapest$609Average$749FlexibilityNo cancel feeOn-time70%

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