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O'Hare Intl

$393+ 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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — ORD
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
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 March 12, 2026.

This FlightHub deal was found by Cheapflights users on 3/9. 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 7/116:45 pm
SOF
-
ORD
2 stops52h 25m
LOT
Fri 8/285:10 pm
ORD
-
SOF
2 stops16h 50m
LOT
Deal found 3/9$658
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Sat 4/112:35 pm
SOF
-
ORD
1 stop13h 15m
LOT
Sat 4/259:50 pm
ORD
-
SOF
1 stop20h 05m
LOT
Deal found 3/11$659
This oojo deal was found by Cheapflights users on 3/8. 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.
Sat 4/185:25 am
SOF
-
ORD
1 stop17h 45m
LOT
Sat 5/25:10 pm
ORD
-
SOF
2 stops24h 45m
LOT
Deal found 3/8$661
This FlightHub deal was found by Cheapflights users on 3/8. 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 9/222:35 pm
SOF
-
ORD
1 stop13h 15m
LOT
Tue 10/139:50 pm
ORD
-
SOF
1 stop12h 10m
LOT
Deal found 3/8$663
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Thu 5/146:45 pm
SOF
-
ORD
2 stops28h 25m
LOT
Mon 5/259:50 pm
ORD
-
SOF
1 stop12h 10m
LOT
Deal found 3/10$664
This Booking.com deal was found by Cheapflights users on 3/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/66:45 pm
SOF
-
ORD
1 stop28h 25m
LOT
Wed 7/155:10 pm
ORD
-
SOF
2 stops36h 40m
LOT
Deal found 3/9$666
This FlightHub deal was found by Cheapflights users on 3/11. 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 9/96:45 pm
SOF
-
ORD
1 stop28h 25m
LOT
Thu 10/19:50 pm
ORD
-
SOF
1 stop12h 10m
LOT
Deal found 3/11$668
This oojo deal was found by Cheapflights users on 3/8. 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.
Thu 4/235:25 am
SOF
-
ORD
1 stop22h 25m
LOT
Thu 9/105:10 pm
ORD
-
SOF
2 stops24h 45m
LOT
Deal found 3/8$669
This LOT deal was found by Cheapflights users on 3/8. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:45 pm
SOF
-
ORD
1 stop28h 25m
LOT
Sat 10/179:50 pm
ORD
-
SOF
1 stop12h 10m
LOT
Deal found 3/8$670
This oojo deal was found by Cheapflights users on 3/10. 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.
Thu 4/22:35 pm
SOF
-
ORD
1 stop13h 15m
LOT
Fri 7/319:50 pm
ORD
-
SOF
1 stop32h 00m
LOT
Deal found 3/10$674
This FlightHub deal was found by Cheapflights users on 3/8. 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 9/222:35 pm
SOF
-
ORD
1 stop13h 15m
LOT
Thu 10/155:10 pm
ORD
-
SOF
2 stops16h 50m
LOT
Deal found 3/8$675
This oojo deal was found by Cheapflights users on 3/8. 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 5/156:45 pm
SOF
-
ORD
2 stops28h 20m
LOT
Sat 5/239:50 pm
ORD
-
SOF
1 stop20h 05m
LOT
Deal found 3/8$677

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 March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$658
(FlightHub)

One-way from

$393
(Kiwi.com)

Popular in

March

Cheapest in

July

Average price

$811
Provider with most accurate pricing for Sofia-Chicago O'Hare Intl flight deals.
Search Deals
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. 5% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($6 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 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 March 12, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 5/31

2:35 pm-3:10 pm

2 stops32h 35m

Chicago O'Hare Intl

Fri 6/26

9:50 pm-6:00 pm

1 stop12h 10m

$742

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 5/16

1:55 pm-7:55 pm

1 stop14h 00m

Chicago O'Hare Intl

Fri 5/22

6:30 pm-10:30 pm

1 stop20h 00m

$744

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 5/12

6:10 am-11:00 am

1 stop12h 50m

Chicago O'Hare Intl

Mon 5/25

3:10 pm-10:55 am

1 stop11h 45m

$744
Quickest round-trip

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 5/13

6:20 am-11:00 am

1 stop12h 40m

Chicago O'Hare Intl

Fri 5/22

3:10 pm-10:50 am

1 stop11h 40m

$744

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 5/15

6:20 am-7:55 pm

1 stop21h 35m

Chicago O'Hare Intl

Mon 5/25

3:10 pm-10:55 am

1 stop11h 45m

$744

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 5/15

6:20 am-4:55 pm

2 stops18h 35m

Chicago O'Hare Intl

Fri 5/22

3:10 pm-10:50 am

1 stop11h 40m

$750

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 5/26

7:00 am-2:15 pm

1 stop15h 15m

Chicago O'Hare Intl

Sat 10/10

1:30 pm-2:00 pm

2 stops16h 30m

$756

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 4/11

4:05 pm-9:15 pm

1 stop13h 10m

Chicago O'Hare Intl

Sat 4/25

11:20 pm-3:00 am

1 stop19h 40m

$764

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 4/14

7:00 am-4:42 pm

2 stops17h 42m

Chicago O'Hare Intl

Wed 6/3

2:00 pm-2:00 pm

2 stops16h 00m

$771

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 4/14

2:10 pm-7:55 pm

1 stop13h 45m

Chicago O'Hare Intl

Mon 6/1

6:00 pm-11:00 pm

1 stop21h 00m

$777

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 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 March 6, 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 41 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, November is the cheapest month in which you can book a flight from Sofia to Chicago O'Hare Intl Airport (average of $527). Flying from Sofia to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $678). 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.

How much does it cost to fly round-trip from Sofia to Chicago O'Hare Intl Airport?

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 March 12, 2026.
See what other customers who have flown with KLM,LOT, andUnited 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
7.8
Good
1,470 reviews

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Food

7.3

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,470 reviews
KLM
7.8
Good
1,470 reviews

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Food

7.3

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
LOT
7.5
Good
1,183 reviews
KLM
7.8
Good
1,470 reviews

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Food

7.3

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
United Airlines
7.4
Good
9,418 reviews
KLM
7.8
Good
1,470 reviews

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Food

7.3

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Turkish Airlines
7.3
Good
4,253 reviews
KLM
7.8
Good
1,470 reviews

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Food

7.3

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Lufthansa
6.8
Okay
7,846 reviews
KLM
7.8
Good
1,470 reviews

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Food

7.3

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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?

    LOT and United Airlines can get you from Sofia to Chicago O'Hare Intl Airport in just under 14h. Your travel time can differ by up to 18h 35m. There are 5194 mi between Sofia and Chicago O'Hare Intl Airport. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $618 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 17% 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 Lufthansa, with prices starting from $495 and $636, 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, November is the cheapest month in which you can book a flight from Sofia to Chicago O'Hare Intl Airport (average of $527). Flying from Sofia to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $678). 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
Gurnee
Naperville
Lake Geneva
Hoffman Estates
Delavan
Downers Grove
Des Plaines
Elgin
Elk Grove Village
Skokie
Oak Brook
South Holland
Beloit
Libertyville
Waukegan
Warrenville
Bridgeview
Oakbrook Terrace

Browse thousands of different options on Cheapflights for your next trip

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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 March 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
LOTCheapest$618Average$708FlexibilityNo cancel feeOn-time81%
KLMCheapest$621Average$760FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$625Average$740FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$651Average$773FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$658Average$802FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$696Average$822FlexibilityNo cancel feeOn-time76%

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