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O'Hare Intl

$426+ Cheap flights from Sofia (SOF) to O'Hare Intl (ORD)

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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — ORD
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Sofia to O'Hare Intl

Cheapest flights from Sofia to O'Hare Intl
Explore the most affordable flight options available from Sofia to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This KLM deal was found by Cheapflights users on 1/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/67:00 am
SOF
-
ORD
1 stop15h 20m
Multiple Airlines
Fri 2/205:20 pm
ORD
-
SOF
1 stop12h 35m
Multiple Airlines
Deal found 1/27$645
This Air France deal was found by Cheapflights users on 1/26. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:10 am
SOF
-
ORD
1 stop16h 00m
Air France
Mon 5/45:10 pm
ORD
-
SOF
1 stop12h 50m
Air France
Deal found 1/26$646
This KLM deal was found by Cheapflights users on 1/26. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:00 am
SOF
-
ORD
2 stops18h 55m
Multiple Airlines
Mon 5/45:10 pm
ORD
-
SOF
1 stop12h 50m
Multiple Airlines
Deal found 1/26$650
This Air France deal was found by Cheapflights users on 1/27. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:10 am
SOF
-
ORD
1 stop16h 00m
Air France
Wed 4/15:10 pm
ORD
-
SOF
1 stop12h 50m
Air France
Deal found 1/27$651
This Air France deal was found by Cheapflights users on 1/26. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:10 am
SOF
-
ORD
1 stop16h 00m
Multiple Airlines
Sun 3/294:20 pm
ORD
-
SOF
1 stop13h 40m
Multiple Airlines
Deal found 1/26$652
This Trip.com deal was found by Cheapflights users on 1/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:45 pm
SOF
-
ORD
1 stop28h 25m
LOT
Mon 8/179:50 pm
ORD
-
SOF
1 stop12h 10m
LOT
Deal found 1/25$653
This KLM deal was found by Cheapflights users on 1/25. 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.
Sun 4/267:00 am
SOF
-
ORD
2 stops20h 48m
KLM
Sat 5/24:20 pm
ORD
-
SOF
1 stop13h 40m
KLM
Deal found 1/25$654
This KLM deal was found by Cheapflights users on 1/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/47:00 am
SOF
-
ORD
2 stops18h 45m
Multiple Airlines
Sun 3/226:20 pm
ORD
-
SOF
1 stop12h 35m
Multiple Airlines
Deal found 1/27$655
This British Airways deal was found by Cheapflights users on 1/26. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/95:25 pm
SOF
-
ORD
2 stops32h 22m
British Airways
Tue 4/1410:35 pm
ORD
-
SOF
1 stop13h 55m
British Airways
Deal found 1/26$656
This British Airways deal was found by Cheapflights users on 1/25. 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.
Fri 4/242:20 pm
SOF
-
ORD
1 stop35h 15m
British Airways
Sat 5/22:22 pm
ORD
-
SOF
2 stops21h 48m
British Airways
Deal found 1/25$657
This British Airways deal was found by Cheapflights users on 1/26. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/119:00 pm
SOF
-
ORD
1 stop28h 00m
British Airways
Thu 5/76:08 am
ORD
-
SOF
2 stops23h 17m
British Airways
Deal found 1/26$658

Find flight deals from Sofia to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to O'Hare Intl (ORD). 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$645
(KLM)

One-way from

$426
(Finnair)

Popular in

October

Cheapest in

July

Average price

$762
Provider with most accurate pricing for Sofia-Chicago O'Hare Intl flight deals.
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Provider most trusted by Cheapflights users for Sofia-Chicago O'Hare Intl flights.
Search Deals
From Sofia to Chicago O'Hare Intl
Search Deals
One-way flight from Sofia to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sofia to O'Hare Intl 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 January 27, 2026.
Use the filters below to find and compare flights from Sofia to Chicago O'Hare Intl Airport that are best for you.

Fly from

Sofia

Fly to

O'Hare Intl

Route

Depart

Return

Price

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 2/6

7:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Fri 2/20

5:20 pm-1:55 pm

1 stop12h 35m

$645

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 2/6

7:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Tue 4/14

1:36 pm-2:00 pm

2 stops16h 24m

$649

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 2/10

7:00 am-5:55 pm

2 stops18h 55m

Chicago O'Hare Intl

Sat 4/18

5:10 pm-2:00 pm

1 stop12h 50m

$650

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 2/20

7:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Fri 2/27

4:25 pm-2:05 pm

1 stop13h 40m

$650

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 2/11

7:00 am-5:55 pm

2 stops18h 55m

Chicago O'Hare Intl

Mon 5/4

5:10 pm-2:00 pm

1 stop12h 50m

$650

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 2/6

7:00 am-5:45 pm

2 stops18h 45m

Chicago O'Hare Intl

Sun 3/29

4:20 pm-2:00 pm

1 stop13h 40m

$656

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 4/29

9:25 pm-6:15 pm

1 stop28h 50m

Chicago O'Hare Intl

Sun 5/3

4:49 pm-7:20 pm

2 stops18h 31m

$657

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 4/24

2:20 pm-3:00 pm

1 stop32h 40m

Chicago O'Hare Intl

Tue 5/5

4:16 pm-8:30 pm

2 stops20h 14m

$657

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 4/26

9:05 pm-12:20 pm

1 stop23h 15m

Chicago O'Hare Intl

Tue 5/5

7:05 pm-8:30 pm

1 stop17h 25m

$657

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 4/29

9:25 pm-6:15 pm

1 stop28h 50m

Chicago O'Hare Intl

Tue 5/5

7:05 pm-8:30 pm

1 stop17h 25m

$657

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 18 results
1
2

Compare providers for flights from Sofia to O'Hare Intl

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 Sofia to O'Hare Intl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
Trip.comPrice Accuracy1 starTrust 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 Sofia-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sofia-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sofia-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sofia-Chicago O'Hare Intl Airport 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 Sofia-Chicago O'Hare Intl Airport 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 Sofia to O'Hare Intl

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

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

Use this chart to determine the optimal time to book a round-trip flight from Sofia to O'Hare Intl. Price data was last updated on January 23, 2026.

To ensure you get the cheapest price possible for a flight from Sofia to Chicago O'Hare Intl Airport, you should look to book at least 45 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from Sofia to Chicago O'Hare Intl Airport (average of $523). Flying from Sofia to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $670). 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 O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated January 27, 2026.
See what other customers who have flown with KLM, LOT, and United Airlines from Sofia to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,443 reviews

Entertainment

7.1

Crew

8.4

Food

7.3

Overall

7.7

Comfort

7.6

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,443 reviews
KLM
7.7
Good
1,443 reviews

Entertainment

7.1

Crew

8.4

Food

7.3

Overall

7.7

Comfort

7.6

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
LOT
7.5
Good
1,176 reviews
KLM
7.7
Good
1,443 reviews

Entertainment

7.1

Crew

8.4

Food

7.3

Overall

7.7

Comfort

7.6

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
United Airlines
7.4
Good
9,206 reviews
KLM
7.7
Good
1,443 reviews

Entertainment

7.1

Crew

8.4

Food

7.3

Overall

7.7

Comfort

7.6

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Turkish Airlines
7.3
Good
4,207 reviews
KLM
7.7
Good
1,443 reviews

Entertainment

7.1

Crew

8.4

Food

7.3

Overall

7.7

Comfort

7.6

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Lufthansa
6.8
Okay
7,749 reviews
KLM
7.7
Good
1,443 reviews

Entertainment

7.1

Crew

8.4

Food

7.3

Overall

7.7

Comfort

7.6

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

Related info for your journey

Find useful and relevant information for your journey from Sofia to O'Hare Intl. 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 from for flights from Sofia to Chicago O'Hare Intl?

    Located just 4.2 mi from the city center, Sofia is the airport most travelers will use when flying to Chicago O'Hare Intl from Sofia. Booking flights from Sofia (SOF) to Chicago O'Hare Intl should be relatively easy as there are 0 daily outbound flights to Chicago O'Hare Intl from 6 different airlines.

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

    KLM can get you from Sofia to Chicago O'Hare Intl Airport in just under 15h 20m. Your travel time can differ by up to . There are 5194 mi between Sofia and Chicago O'Hare Intl Airport.

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

    Our cheapest airline available from Sofia to Chicago O'Hare Intl Airport is LOT. Our recent data shows that you can find tickets from as low as $576 on this airline. Additional options worth looking into are KLM and Turkish Airlines, starting at $621 and $625 round-trip. You may be able to fly from Sofia to Chicago O'Hare Intl Airport for 21% less than the average price by searching for these airlines.

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

    $388 is the cheapest one-way deal found within the past few days, from Air Serbia. You may also be able to find cheap deals on Turkish Airlines and United Airlines, with prices starting from $558 and $635, respectively.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Sofia to Chicago O'Hare Intl Airport (average of $523). Flying from Sofia to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $670). 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

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Naperville
Gurnee
Elgin
Hoffman Estates
Beloit
Delavan
Oak Brook
Des Plaines
Downers Grove
Elk Grove Village
Skokie
Libertyville
Lake Geneva
Waukegan
Bridgeview
Kenosha
Warrenville
Aurora

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Alternative routes for Sofia to O'Hare Intl

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

Top 6 airlines flying from Sofia to O'Hare Intl

Discover the top 6 airlines that operate flights from Sofia to O'Hare Intl. 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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
LOTCheapest$576Average$696FlexibilityNo cancel feeOn-time81%
KLMCheapest$621Average$750FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$625Average$730FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$645Average$768FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$649Average$766FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$658Average$786FlexibilityNo cancel feeOn-time78%

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