$486 Cheap Flights from Sofia (SOF) to Chicago (ORD)

View $486 flight on Tue, May 5, 2026Opens in a new window

Popular airlines from Sofia Airport (SOF) to Chicago O'Hare Intl. Airport (ORD)

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Cheap Flights from Sofia to Chicago (SOF-ORD)

Prices were available within the past 7 days and start at $486 for one-way flights and $701 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LOT-Polish Airlines
Thu, Sep 17 - Tue, Nov 17
SOF
Sofia
ORD
Chicago
$701 Roundtrip, found 4 days ago
$701
Roundtrip
found 4 days ago
Select LOT-Polish Airlines flight, departing Thu, Sep 17 from Sofia to Chicago, returning Tue, Nov 17, priced at $701 found 4 days ago
LOT-Polish Airlines
Sat, May 2 - Mon, Jun 22
SOF
Sofia
ORD
Chicago
$720 Roundtrip, found 1 day ago
$720
Roundtrip
found 1 day ago
Select LOT-Polish Airlines flight, departing Sat, May 2 from Sofia to Chicago, returning Mon, Jun 22, priced at $720 found 1 day ago
LOT-Polish Airlines
Mon, Jun 1 - Mon, Aug 10
SOF
Sofia
ORD
Chicago
$723 Roundtrip, found 6 hours ago
$723
Roundtrip
found 6 hours ago
Select LOT-Polish Airlines flight, departing Mon, Jun 1 from Sofia to Chicago, returning Mon, Aug 10, priced at $723 found 6 hours ago
LOT-Polish Airlines
Mon, May 25 - Mon, Sep 28
SOF
Sofia
ORD
Chicago
$724 Roundtrip, found 3 days ago
$724
Roundtrip
found 3 days ago
Select LOT-Polish Airlines flight, departing Mon, May 25 from Sofia to Chicago, returning Mon, Sep 28, priced at $724 found 3 days ago
Turkish Airlines
Thu, May 7 - Mon, Jul 6
SOF
Sofia
ORD
Chicago
$756 Roundtrip, found 1 hour ago
$756
Roundtrip
found 1 hour ago
Select Turkish Airlines flight, departing Thu, May 7 from Sofia to Chicago, returning Mon, Jul 6, priced at $756 found 1 hour ago
Lufthansa
Thu, Apr 30 - Fri, May 8
SOF
Sofia
ORD
Chicago
$790 Roundtrip, found 2 days ago
$790
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Thu, Apr 30 from Sofia to Chicago, returning Fri, May 8, priced at $790 found 2 days ago
Swiss International Air Lines
Tue, Apr 28 - Thu, Jul 30
SOF
Sofia
ORD
Chicago
$794 Roundtrip, found 2 days ago
$794
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Tue, Apr 28 from Sofia to Chicago, returning Thu, Jul 30, priced at $794 found 2 days ago
TAP Portugal
Wed, Sep 30 - Wed, Oct 21
SOF
Sofia
ORD
Chicago
$801 Roundtrip, found 23 hours ago
$801
Roundtrip
found 23 hours ago
Select TAP Portugal flight, departing Wed, Sep 30 from Sofia to Chicago, returning Wed, Oct 21, priced at $801 found 23 hours ago
British Airways
Mon, May 11 - Tue, Aug 4
SOF
Sofia
ORD
Chicago
$808 Roundtrip, found 18 hours ago
$808
Roundtrip
found 18 hours ago
Select British Airways flight, departing Mon, May 11 from Sofia to Chicago, returning Tue, Aug 4, priced at $808 found 18 hours ago
Air Canada
Tue, Jun 2 - Tue, Aug 11
SOF
Sofia
ORD
Chicago
$826 Roundtrip, found 6 hours ago
$826
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Tue, Jun 2 from Sofia to Chicago, returning Tue, Aug 11, priced at $826 found 6 hours ago

Alternative airports near Chicago

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to O'Hare Intl. ORD. Cheapest option available. Average driving time to city center is 23 minutes. Flights from $836
ORD
O'Hare Intl.
Cheapest
Average driving time to city center23 min
Flights from $836

Find the cheapest month to fly from Sofia (SOF) to Chicago (ORD)

November is typically the cheapest month to fly

From $547 - $1,110 per traveler.

Frequently asked questions

How much does a flight from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.) cost?
You can find cheap one-way flights from $486 and cheap return flights from $701 Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.) with Expedia. One-way flights typically cost between $802 and $3523, and return flights often range between $758 and $4393. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.)?
March is the cheapest month to fly from Sofia (SOF) to Chicago (ORD), with average return fares around $674. This price is about 14% lower than the average throughout the year, as March typically sees a drop in travel demand after the winter season. Other cheap months to fly from Sofia to Chicago include September and November.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.)?
Enter SOF to ORD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.)?
Tarom-Romanian Air Transport is one of the cheapest airlines offering connecting flights from Sofia (SOF) to Chicago, IL (ORD), with round-trip tickets starting from around $1,324 with a layover in Henri Coanda Intl. (OTP). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.)?
To find a cheap flight from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.)?
The ideal months to fly from Sofia (SOF) to Chicago (ORD) are March and September. You can find return flights for about $674 during these times. March offers a refreshing spring atmosphere in Chicago, while September provides a lovely early autumn experience, making both months great for travel.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.)?
The earliest flight from Sofia Airport (SOF) to O'Hare International Airport (ORD) usually departs at around 1:10 AM, operated by flydubai and Emirates. This flight is part of a seasonal service available in February and March, so if you're traveling during those months, an early departure can help you maximize your time in Chicago. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.)?
When flying from Sofia (SOF) to O'Hare Intl. (ORD), the most popular departure times are in the early morning, from 6am to 9am. This time window captures about 64% of total traffic. Major carriers like Lufthansa and United Airlines provide flights during this period. Many travelers prefer this timing as it allows them to maximize their day upon arrival.
How long does it take to fly from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.)?
A flight from SOF to ORD with a layover takes around 16 hours, with the route covering approximately 5,198 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.)?
Select the "Business class" and "First class" filters when looking for SOF to ORD flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.) flight with Expedia?
It's easy to earn miles on a Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Chicago from SOF (SOF)?
If you're planning to travel to Chicago from SOF (SOF), you can fly into O'Hare Intl. (ORD) Some flights may connect through major hubs like Frankfurt Intl. (FRA), Franz Josef Strauss Intl. (MUC), Schiphol (AMS) before reaching Chicago. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.) at the last minute?
Typically, booking a last minute flight from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.) flight and hotel package?
Securing a Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.) Chicago Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.)?
If you booked your Sofia (SOF) to Chicago, IL (ORD-O'Hare Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Sofia
Destination airport
O'Hare Intl.
Airlines serving
Air Canada, Air France, Air Serbia, Austrian Airlines, British Airways, ITA Airways, Iberia, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Qatar Airways, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$700
Distance
5197 mi

Book with confidence

Sofia to Chicago Flights

The cheapest times to fly from Sofia to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sofia to Chicago are during the month of September. You can find some of the cheapest flights from Sofia to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sofia to Chicago

Sunday is one of the best days to book for cheap flights from Sofia to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Sofia to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sofia to Chicago in 2026. You can also book with separate airlines for your outbound and return journeys, from $486 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sofia to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sofia to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Sofia to Chicago Flights

*Flight schedules are subject to change.

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*Available to One Key members.