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$223+ 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOF
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Sofia are usually found in November or February, booked 16 days in advance, depart on a Thursday or Sunday and return on a Wednesday

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 August 20, 2025.

Round-trip from

$546
(FlightHub)

One-way from

$223
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$708
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. 26% potential increase in price ($272 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 20, 2025.

This FlightHub deal was found by Cheapflights users on 8/20. 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
Wed 10/83:35 pmSOF - ORD
1 stop14h 25mTurkish Airlines
Deal found 8/20$546
This FlightHub deal was found by Cheapflights users on 8/19. 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 10/411:45 pmORD - SOF
1 stop31h 00mTurkish Airlines
Tue 10/149:25 amSOF - ORD
1 stop32h 15mTurkish Airlines
Deal found 8/19$552
This FlightHub deal was found by Cheapflights users on 8/18. 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 9/811:45 pmORD - SOF
1 stop24h 50mTurkish Airlines
Mon 10/139:25 amSOF - ORD
1 stop32h 15mTurkish Airlines
Deal found 8/18$555
This FlightHub deal was found by Cheapflights users on 8/20. 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 9/611:45 pmORD - SOF
1 stop31h 00mTurkish Airlines
Sat 10/119:15 pmSOF - ORD
1 stop20h 25mTurkish Airlines
Deal found 8/20$556
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/311:45 pmORD - SOF
1 stop24h 50mTurkish Airlines
Wed 9/179:15 pmSOF - ORD
1 stop20h 25mTurkish Airlines
Deal found 8/18$560
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 10/611:45 pmORD - SOF
1 stop24h 50mTurkish Airlines
Thu 10/169:25 amSOF - ORD
1 stop16h 30mTurkish Airlines
Deal found 8/19$561
This CheapOair deal was found by Cheapflights users on 8/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:50 pmORD - SOF
1 stop28h 45mTurkish Airlines
Tue 9/239:25 amSOF - ORD
1 stop16h 30mTurkish Airlines
Deal found 8/19$562
This Turkish Airlines deal was found by Cheapflights users on 8/17. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/411:45 pmORD - SOF
1 stop24h 50mTurkish Airlines
Wed 10/153:35 pmSOF - ORD
1 stop26h 05mTurkish Airlines
Deal found 8/17$563
This FlightHub deal was found by Cheapflights users on 8/19. 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 9/2811:25 amORD - SOF
1 stop19h 20mTurkish Airlines
Thu 10/99:25 amSOF - ORD
1 stop32h 15mTurkish Airlines
Deal found 8/19$565
This Ovago deal was found by Cheapflights users on 8/17. 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.
Sun 10/511:25 amORD - SOF
1 stop13h 10mTurkish Airlines
Tue 10/143:35 pmSOF - ORD
1 stop26h 05mTurkish Airlines
Deal found 8/17$566
This Turkish Airlines deal was found by Cheapflights users on 8/17. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/411:45 pmORD - SOF
1 stop24h 50mTurkish Airlines
Fri 10/103:35 pmSOF - ORD
1 stop26h 05mTurkish Airlines
Deal found 8/17$573
This FlightHub deal was found by Cheapflights users on 8/18. 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 11/168:20 pmORD - SOF
1 stop16h 30mTurkish Airlines
Sun 11/3010:05 amSOF - ORD
1 stop32h 00mTurkish Airlines
Deal found 8/18$574

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 August 20, 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

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 9/6

11:45 pm-2:45 pm

1 stop31h 00m

Sofia

Thu 10/9

9:25 am-9:40 am

1 stop32h 15m

$546

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 10/4

11:45 pm-2:45 pm

1 stop31h 00m

Sofia

Tue 10/14

9:15 pm-9:40 am

1 stop20h 25m

$552

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 9/13

11:45 pm-8:35 am

1 stop24h 50m

Sofia

Sat 10/11

9:15 pm-9:40 am

1 stop20h 25m

$556

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 11/5

11:50 am-3:10 pm

1 stop19h 20m

Sofia

Sun 11/9

10:05 am-10:05 am

1 stop32h 00m

$556

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 9/28

7:50 pm-8:35 am

1 stop28h 45m

Sofia

Wed 10/8

9:15 pm-9:40 am

1 stop20h 25m

$556

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 10/11

11:45 pm-2:45 pm

1 stop31h 00m

Sofia

Sat 10/25

3:35 pm-7:25 pm

1 stop35h 50m

$556

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 10/6

11:45 pm-8:35 am

1 stop24h 50m

Sofia

Thu 10/16

9:25 am-5:55 pm

1 stop16h 30m

$561

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 9/9

7:50 pm-8:35 am

1 stop28h 45m

Sofia

Tue 9/23

9:25 am-5:55 pm

1 stop16h 30m

$562

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 10/8

6:40 am-2:30 am

2 stops35h 50m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 19 results
1
2

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 August 8, 2025.

The best time to book flights from Chicago O'Hare Intl Airport to Sofia is 16 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 $632). Flying from Chicago O'Hare Intl Airport to Sofia in June is currently the most expensive (average of $1,185). 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 August 20, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 33% 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 August 20, 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
1,110 reviews

Overall

7.6

Crew

8.2

Food

7.2

Comfort

7.5

Boarding

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Hinesh,May 2025

LHR - WAW

Would not recommend this airline flight was delayed baggage was lost bad communication, our bag landed at the destination airport at 12 midday but did not arrive at the hotel till midnight no urgency at all this totally ruined the first 2 days of our trip worst airline I have used.
LOT
7.6
Good
1,110 reviews
LOT
7.6
Good
1,110 reviews

Overall

7.6

Crew

8.2

Food

7.2

Comfort

7.5

Boarding

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Hinesh,May 2025

LHR - WAW

Would not recommend this airline flight was delayed baggage was lost bad communication, our bag landed at the destination airport at 12 midday but did not arrive at the hotel till midnight no urgency at all this totally ruined the first 2 days of our trip worst airline I have used.
United Airlines
7.4
Good
8,928 reviews
LOT
7.6
Good
1,110 reviews

Overall

7.6

Crew

8.2

Food

7.2

Comfort

7.5

Boarding

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Hinesh,May 2025

LHR - WAW

Would not recommend this airline flight was delayed baggage was lost bad communication, our bag landed at the destination airport at 12 midday but did not arrive at the hotel till midnight no urgency at all this totally ruined the first 2 days of our trip worst airline I have used.
Turkish Airlines
7.3
Good
3,949 reviews
LOT
7.6
Good
1,110 reviews

Overall

7.6

Crew

8.2

Food

7.2

Comfort

7.5

Boarding

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Hinesh,May 2025

LHR - WAW

Would not recommend this airline flight was delayed baggage was lost bad communication, our bag landed at the destination airport at 12 midday but did not arrive at the hotel till midnight no urgency at all this totally ruined the first 2 days of our trip worst airline I have used.
Lufthansa
6.8
Okay
7,337 reviews
LOT
7.6
Good
1,110 reviews

Overall

7.6

Crew

8.2

Food

7.2

Comfort

7.5

Boarding

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Hinesh,May 2025

LHR - WAW

Would not recommend this airline flight was delayed baggage was lost bad communication, our bag landed at the destination airport at 12 midday but did not arrive at the hotel till midnight no urgency at all this totally ruined the first 2 days of our trip worst airline I have used.
Air Serbia
6.3
Okay
198 reviews
LOT
7.6
Good
1,110 reviews

Overall

7.6

Crew

8.2

Food

7.2

Comfort

7.5

Boarding

7.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Hinesh,May 2025

LHR - WAW

Would not recommend this airline flight was delayed baggage was lost bad communication, our bag landed at the destination airport at 12 midday but did not arrive at the hotel till midnight no urgency at all this totally ruined the first 2 days of our trip worst airline I have used.

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 19h 20m. Fly via Turkish Airlines 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 $495 on this airline. Additional options worth looking into are Air France and KLM, starting at $498 and $533 round-trip. You may be able to fly from Chicago O'Hare Intl Airport to Sofia for 35% less than the average price by searching for these airlines.

  • 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. Warsaw 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 Sultan Ahmet Camii more than anywhere else. Travelers on a layover in Istanbul can visit Taksim Square, Beyazit Meydani, and Sultan Ahmet Camii, by traveling 20.8 mi, 21.7 mi, and 22.3 mi, respectively after landing at Istanbul. Travelers can book a car rental at Istanbul for about $51 per day to make their sightseeing more efficient.

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

    Warsaw travelers tend to visit Warsaw Old Town, Natolin, and Historical Museum of Warsaw more than any other notable places. Warsaw Old Town, Natolin and Historical Museum of Warsaw are located about 6.1 mi, 5.0 mi, and 6.1 mi, respectively from Warsaw Frederic Chopin if you are interested in checking them out. Travelers can book a car rental at Warsaw Frederic Chopin for about $35 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 $632). Flying from Chicago O'Hare Intl Airport to Sofia in June is currently the most expensive (average of $1,185). 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$495Average$733FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$498Average$624FlexibilityNo cancel feeOn-time77%
KLMCheapest$533Average$738FlexibilityNo cancel feeOn-time75%
LOTCheapest$570Average$878FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$589Average$883FlexibilityNo cancel feeOn-time76%
SWISSCheapest$596Average$847FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$601Average$789FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$613Average$1,010FlexibilityNo cancel feeOn-time78%
British AirwaysCheapest$644Average$796FlexibilityNo cancel feeOn-time70%
Air SerbiaCheapest$652Average$1,024FlexibilityNo cancel feeOn-timeN/A

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