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O'Hare Intl

$319+ 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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — ORD
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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1. Tell us where you want to go

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3. Compare prices and book

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Cheapflights Tip: The best prices from Sofia to Chicago O'Hare Intl are usually found in November or February, booked 41 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Find 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 October 28, 2025.

This FlightHub deal was found by Cheapflights users on 10/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/142:35 pmSOF - ORD
2 stops37h 20mLOT
Thu 1/89:55 pmORD - SOF
1 stop11h 55mLOT
Deal found 10/25$645
This FlightHub deal was found by Cheapflights users on 10/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:35 pmSOF - ORD
1 stop33h 25mLOT
Thu 1/89:55 pmORD - SOF
1 stop11h 55mLOT
Deal found 10/25$661
This LOT deal was found by Cheapflights users on 10/25. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/102:35 pmSOF - ORD
1 stop13h 25mLOT
Thu 1/89:55 pmORD - SOF
1 stop11h 55mLOT
Deal found 10/25$669
This FlightHub deal was found by Cheapflights users on 10/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/142:35 pmSOF - ORD
2 stops37h 20mLOT
Fri 1/99:55 pmORD - SOF
1 stop31h 55mLOT
Deal found 10/25$673
This Gotogate deal was found by Cheapflights users on 10/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:35 pmSOF - ORD
1 stop33h 25mLOT
Fri 12/59:55 pmORD - SOF
1 stop31h 55mLOT
Deal found 10/26$681
This Justfly.com deal was found by Cheapflights users on 10/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/219:35 amSOF - ORD
1 stop16h 50mTurkish Airlines
Thu 12/411:50 amORD - SOF
1 stop12h 55mTurkish Airlines
Deal found 10/27$686
This FlightHub deal was found by Cheapflights users on 10/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/122:35 pmSOF - ORD
1 stop13h 25mLOT
Fri 1/99:55 pmORD - SOF
1 stop31h 55mLOT
Deal found 10/25$689
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/162:35 pmSOF - ORD
1 stop13h 25mLOT
Sat 1/109:55 pmORD - SOF
1 stop11h 55mLOT
Deal found 10/25$694
This FlightHub deal was found by Cheapflights users on 10/27. 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.
Mon 12/226:35 pmSOF - ORD
1 stop33h 25mLOT
Wed 4/159:40 pmORD - SOF
1 stop20h 20mLOT
Deal found 10/27$695
This KLM deal was found by Cheapflights users on 10/26. 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.
Sun 11/237:00 amSOF - ORD
1 stop15h 20mMultiple Airlines
Sun 11/305:20 pmORD - SOF
1 stop12h 35mMultiple Airlines
Deal found 10/26$697
This LOT deal was found by Cheapflights users on 10/25. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:35 pmSOF - ORD
1 stop33h 25mLOT
Thu 1/89:55 pmORD - SOF
1 stop11h 55mLOT
Deal found 10/25$698
This British Airways deal was found by Cheapflights users on 10/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/612:05 pmSOF - ORD
1 stop14h 40mBritish Airways
Sat 5/307:05 pmORD - SOF
1 stop17h 15mBritish Airways
Deal found 10/28$700

Cheap 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 October 28, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$645
(FlightHub)

One-way from

$319
(Kiwi.com)

Popular in

October

Cheapest in

November

Average price

$778
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.
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From Sofia to Chicago O'Hare Intl
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One-way flight from Sofia to Chicago O'Hare Intl
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Highest demand for flights based on searches. 2% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($6 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 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 October 28, 2025.
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

Sun 12/14

2:35 pm-7:55 pm

2 stops37h 20m

Chicago O'Hare Intl

Tue 12/30

9:55 pm-5:50 pm

1 stop11h 55m

$645

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 11/21

9:35 am-6:25 pm

1 stop16h 50m

Chicago O'Hare Intl

Thu 12/4

11:50 am-8:45 am

1 stop12h 55m

$686

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 2/25

9:00 pm-1:50 pm

1 stop24h 50m

Chicago O'Hare Intl

Sat 5/16

5:10 pm-8:20 pm

2 stops19h 10m

$699

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 2/11

9:00 pm-5:00 pm

1 stop28h 00m

Chicago O'Hare Intl

Sat 5/16

5:40 pm-8:20 pm

1 stop18h 40m

$699

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 12/8

5:25 pm-6:45 pm

1 stop33h 20m

Chicago O'Hare Intl

Sat 5/30

7:05 pm-8:20 pm

1 stop17h 15m

$700

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 12/6

12:05 pm-6:45 pm

1 stop14h 40m

Chicago O'Hare Intl

Sat 5/30

7:05 pm-8:20 pm

1 stop17h 15m

$700

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 12/7

2:30 pm-1:50 pm

1 stop31h 20m

Chicago O'Hare Intl

Sat 5/30

7:05 pm-8:20 pm

1 stop17h 15m

$700

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 12/13

12:05 pm-1:50 pm

1 stop33h 45m

Chicago O'Hare Intl

Wed 6/3

7:05 pm-1:30 pm

1 stop34h 25m

$700

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 11/23

7:00 am-4:24 pm

2 stops17h 24m

Chicago O'Hare Intl

Sun 11/30

5:20 pm-1:55 pm

1 stop12h 35m

$707

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 12/12

7:00 am-6:02 pm

2 stops19h 02m

Chicago O'Hare Intl

Thu 1/8

5:20 pm-1:55 pm

1 stop12h 35m

$707

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 20 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 October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Trip.comPrice Accuracy2 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 Sofia-Chicago O'Hare Intl Airport flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Sofia-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. Justfly.com >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 Justfly.com the most. Justfly.com 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 October 24, 2025.

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, February is the cheapest month in which you can book a flight from Sofia to Chicago O'Hare Intl Airport (average of $525). Flying from Sofia to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $672). 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 SOF to ORD?

Find hourly flight availability from Sofia to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

A simple way to save on the total cost of your ticket is to fly from Sofia to Chicago O'Hare Intl Airport at noon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight in the morning.

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 October 28, 2025.
See what other customers who have flown with LOT, Austrian Airlines, 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.
LOT
7.6
Good
1,136 reviews

Food

7.1

Crew

8.2

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Overall

7.6

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
1,136 reviews
LOT
7.6
Good
1,136 reviews

Food

7.1

Crew

8.2

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Rami,Sep 2025

LAX - WAW

The second leg. Very tight seats No WiFi on both flights
Austrian Airlines
7.6
Good
861 reviews
LOT
7.6
Good
1,136 reviews

Food

7.1

Crew

8.2

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Overall

7.6

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
8,997 reviews
LOT
7.6
Good
1,136 reviews

Food

7.1

Crew

8.2

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Overall

7.6

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
4,029 reviews
LOT
7.6
Good
1,136 reviews

Food

7.1

Crew

8.2

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Overall

7.6

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
7,532 reviews
LOT
7.6
Good
1,136 reviews

Food

7.1

Crew

8.2

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Overall

7.6

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 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 8 different airlines.

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

    LOT, Turkish Airlines, and British Airways can get you from Sofia to Chicago O'Hare Intl Airport in just under 16h 50m. Your travel time can differ by up to 20h 30m. 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 $532 on this airline. Additional options worth looking into are British Airways and Air France, starting at $546 and $560 round-trip. You may be able to fly from Sofia to Chicago O'Hare Intl Airport for 25% less than the average price by searching for these airlines.

  • 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 $525). Flying from Sofia to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $672). 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
Skokie
Des Plaines
Gurnee
Hoffman Estates
Elgin
Oak Brook
Elk Grove Village
Beloit
Rockford
Naperville
Racine
Downers Grove
Orland Park
Merrillville
Bridgeview
Warrenville
Joliet
Waukegan

Browse thousands of different options on Cheapflights for your next trip

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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 8 airlines flying from Sofia to O'Hare Intl

Discover the top 8 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
LOTCheapest$532Average$653FlexibilityNo cancel feeOn-time81%
British AirwaysCheapest$546Average$619FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$560Average$670FlexibilityNo cancel feeOn-time77%
KLMCheapest$604Average$745FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$625Average$716FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$630Average$767FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$641Average$766FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$654Average$796FlexibilityNo cancel feeOn-time78%

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