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$353+ 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 12/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOF
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Sofia are usually found in October or February, booked 46 days in advance, depart on a Thursday or Sunday and return on a Wednesday

Find 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 October 16, 2025.

This KLM deal was found by Cheapflights users on 10/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/141:25 pmORD - SOF
2 stops16h 40mKLM
Sun 11/237:00 amSOF - ORD
1 stop15h 20mKLM
Deal found 10/16$539
This FlightHub deal was found by Cheapflights users on 10/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1811:50 amORD - SOF
1 stop25h 00mTurkish Airlines
Mon 3/164:00 pmSOF - ORD
1 stop26h 05mTurkish Airlines
Deal found 10/15$540
This Kiwi.com deal was found by Cheapflights users on 10/15. 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 11/59:50 pmORD - SOF
1 stop12h 30mLufthansa
Wed 11/196:05 amSOF - ORD
2 stops15h 05mLufthansa
Deal found 10/15$541
This Air France deal was found by Cheapflights users on 10/16. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/152:35 pmORD - SOF
2 stops15h 20mMultiple Airlines
Sun 11/237:00 amSOF - ORD
2 stops17h 24mMultiple Airlines
Deal found 10/16$543
This Kiwi.com deal was found by Cheapflights users on 10/15. 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 11/51:00 pmORD - SOF
2 stops21h 00mAustrian Airlines
Thu 11/206:45 pmSOF - ORD
1 stop27h 15mAustrian Airlines
Deal found 10/15$545
This Mytrip deal was found by Cheapflights users on 10/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:50 pmORD - SOF
1 stop12h 25mMultiple Airlines
Thu 11/136:00 amSOF - ORD
2 stops16h 55mMultiple Airlines
Deal found 10/15$551
This Air France deal was found by Cheapflights users on 10/16. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/175:20 pmORD - SOF
1 stop12h 45mMultiple Airlines
Wed 3/187:00 amSOF - ORD
1 stop15h 20mMultiple Airlines
Deal found 10/16$554
This Ovago deal was found by Cheapflights users on 10/16. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1311:50 amORD - SOF
1 stop19h 20mTurkish Airlines
Fri 11/219:35 amSOF - ORD
1 stop16h 50mTurkish Airlines
Deal found 10/16$557
This Gotogate deal was found by Cheapflights users on 10/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:05 amORD - SOF
2 stops26h 55mAir Canada
Wed 11/266:10 amSOF - ORD
2 stops16h 45mAir Canada
Deal found 10/15$558
This FlightHub deal was found by Cheapflights users on 10/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/611:50 amORD - SOF
1 stop19h 20mTurkish Airlines
Sat 11/154:00 pmSOF - ORD
1 stop34h 25mTurkish Airlines
Deal found 10/15$559

Cheap 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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$539
(Air France)

One-way from

$353
(Air Serbia)

Popular in

June

Cheapest in

October

Average price

$611
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
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One-way flight from Chicago O'Hare Intl to Sofia
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Highest demand for flights based on searches. 25% potential increase in price ($261 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 October 16, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Sofia that are best for you.

Fly from

O'Hare Intl

Fly to

Sofia

Route

Depart

Return

Price

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 11/14

1:25 pm-2:05 pm

2 stops16h 40m

Sofia

Sun 11/23

7:00 am-2:20 pm

1 stop15h 20m

$539

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 11/29

5:20 pm-1:55 pm

1 stop12h 35m

Sofia

Sat 12/6

7:00 am-5:46 pm

2 stops18h 46m

$539

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Thu 12/25

1:35 pm-2:05 pm

2 stops16h 30m

Sofia

Fri 2/20

7:00 am-2:20 pm

1 stop15h 20m

$539

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Thu 1/22

1:30 pm-2:05 pm

2 stops16h 35m

Sofia

Sat 2/14

7:00 am-2:20 pm

1 stop15h 20m

$539

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 1/17

1:30 pm-1:55 pm

2 stops16h 25m

Sofia

Sat 1/31

7:00 am-7:29 pm

2 stops20h 29m

$543

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 11/14

1:25 pm-2:05 pm

2 stops16h 40m

Sofia

Fri 11/21

7:00 am-5:53 pm

2 stops18h 53m

$549

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 11/14

1:25 pm-2:05 pm

2 stops16h 40m

Sofia

Sat 11/22

7:00 am-4:24 pm

2 stops17h 24m

$549

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 3/15

7:15 am-1:10 pm

2 stops22h 55m

Sofia

Sun 3/29

7:25 pm-6:15 pm

1 stop30h 50m

$556

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 11/12

6:50 pm-3:15 pm

1 stop12h 25m

Sofia

Mon 11/24

3:00 pm-4:20 pm

1 stop33h 20m

$564

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 1/6

1:35 pm-2:05 pm

2 stops16h 30m

Sofia

Sat 1/17

7:00 am-2:20 pm

1 stop15h 20m

$564

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 22 results
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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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
FlightnetworkPrice Accuracy3 starsTrust Score*1 star

*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 October 10, 2025.

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 $489). Flying from Chicago O'Hare Intl Airport to Sofia in June is currently the most expensive (average of $826). 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 ORD to SOF?

Find hourly flight availability from O'Hare Intl to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 16, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 32% on flights from Chicago O'Hare Intl Airport to Sofia by exploring options for tickets in the morning.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to Sofia?

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Sofia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Sofia flight should consider departing on Monday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 16, 2025.
Get a feel of what it's like to fly with LOT, United Airlines, and Turkish 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.
LOT
7.6
Good
1,133 reviews

Comfort

7.5

Entertainment

6.9

Overall

7.6

Crew

8.2

Boarding

7.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights
LOT
7.6
Good
1,133 reviews
LOT
7.6
Good
1,133 reviews

Comfort

7.5

Entertainment

6.9

Overall

7.6

Crew

8.2

Boarding

7.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights
United Airlines
7.4
Good
8,982 reviews
LOT
7.6
Good
1,133 reviews

Comfort

7.5

Entertainment

6.9

Overall

7.6

Crew

8.2

Boarding

7.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights
Turkish Airlines
7.3
Good
4,010 reviews
LOT
7.6
Good
1,133 reviews

Comfort

7.5

Entertainment

6.9

Overall

7.6

Crew

8.2

Boarding

7.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights
Lufthansa
6.8
Okay
7,497 reviews
LOT
7.6
Good
1,133 reviews

Comfort

7.5

Entertainment

6.9

Overall

7.6

Crew

8.2

Boarding

7.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights
Air Serbia
6.2
Okay
203 reviews
LOT
7.6
Good
1,133 reviews

Comfort

7.5

Entertainment

6.9

Overall

7.6

Crew

8.2

Boarding

7.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights

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 10 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 16h 40m. Fly via KLM to get the fastest option. Airlines will cover a distance of 5194 mi.

  • 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 Turkish Airlines. Our recent data shows that you can find tickets from as low as $511 on this airline. Additional options worth looking into are KLM and LOT, starting at $533 and $584 round-trip. You may be able to fly from Chicago O'Hare Intl Airport to Sofia for 33% 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 Air Serbia, which is currently one of the cheapest options available, starting at $359. Lufthansa flights start at $439 while deals on Air Canada start at $460 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. Frankfurt am Main 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, Beyazit Meydani, and Laleli Camii more than anywhere else. Travelers on a layover in Istanbul can visit Taksim Square, Beyazit Meydani, and Laleli Camii, by traveling 20.8 mi, 21.7 mi, and 21.5 mi, respectively after landing at Istanbul. Travelers can book a car rental at Istanbul for about $39 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Frankfurt am Main?

    Frankfurt am Main travelers tend to visit Römerberg, Hauptwache, and Festhalle more than any other notable places. Römerberg, Hauptwache and Festhalle are located about 7.4 mi, 7.4 mi, and 6.5 mi, respectively from Frankfurt am Main if you are interested in checking them out. Travelers can book a car rental at Frankfurt am Main for about $44 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 Frankfurt am Main. Munich sees the second fewest layovers for non-direct flights flying from Chicago O'Hare Intl Airport to Sofia.

  • 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 $489). Flying from Chicago O'Hare Intl Airport to Sofia in June is currently the most expensive (average of $826). 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 O'Hare Intl to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
Midway to Sofia flights

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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$511Average$780FlexibilityNo cancel feeOn-time77%
KLMCheapest$533Average$723FlexibilityNo cancel feeOn-time75%
LOTCheapest$584Average$994FlexibilityNo cancel feeOn-time81%
Air FranceCheapest$585Average$624FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$589Average$892FlexibilityNo cancel feeOn-time76%
SWISSCheapest$594Average$821FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$601Average$789FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$606Average$986FlexibilityNo cancel feeOn-time78%
British AirwaysCheapest$613Average$816FlexibilityNo cancel feeOn-time70%
Air SerbiaCheapest$634Average$1,019FlexibilityNo cancel feeOn-timeN/A

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