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$475 Cheap Flights from Sofia (SOF) to Chicago (ORD)

View $475 flight on Fri, Feb 19, 2027Opens 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 $475 for one-way flights and $753 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LOT-Polish Airlines
Sat, Mar 20 - Sat, Apr 10
SOF
Sofia
ORD
Chicago
$753 Roundtrip, found 6 hours ago
$753
Roundtrip
found 6 hours ago
Select LOT-Polish Airlines flight, departing Sat, Mar 20 from Sofia to Chicago, returning Sat, Apr 10, priced at $753 found 6 hours ago
LOT-Polish Airlines
Wed, Dec 16 - Fri, Jan 29
SOF
Sofia
ORD
Chicago
$754 Roundtrip, found 3 days ago
$754
Roundtrip
found 3 days ago
Select LOT-Polish Airlines flight, departing Wed, Dec 16 from Sofia to Chicago, returning Fri, Jan 29, priced at $754 found 3 days ago
LOT-Polish Airlines
Wed, Sep 23 - Wed, Sep 30
SOF
Sofia
ORD
Chicago
$757 Roundtrip, found 4 days ago
$757
Roundtrip
found 4 days ago
Select LOT-Polish Airlines flight, departing Wed, Sep 23 from Sofia to Chicago, returning Wed, Sep 30, priced at $757 found 4 days ago
LOT-Polish Airlines
Sat, Mar 20 - Sat, Apr 10
SOF
Sofia
ORD
Chicago
$758 Roundtrip, found 6 hours ago
$758
Roundtrip
found 6 hours ago
Select LOT-Polish Airlines flight, departing Sat, Mar 20 from Sofia to Chicago, returning Sat, Apr 10, priced at $758 found 6 hours ago
LOT-Polish Airlines
Sat, Dec 12 - Wed, Jan 20
SOF
Sofia
ORD
Chicago
$760 Roundtrip, found 3 days ago
$760
Roundtrip
found 3 days ago
Select LOT-Polish Airlines flight, departing Sat, Dec 12 from Sofia to Chicago, returning Wed, Jan 20, priced at $760 found 3 days ago
LOT-Polish Airlines
Wed, Sep 23 - Wed, Sep 30
SOF
Sofia
ORD
Chicago
$763 Roundtrip, found 4 days ago
$763
Roundtrip
found 4 days ago
Select LOT-Polish Airlines flight, departing Wed, Sep 23 from Sofia to Chicago, returning Wed, Sep 30, priced at $763 found 4 days ago
Turkish Airlines
Sat, Feb 6 - Sat, Mar 13
SOF
Sofia
ORD
Chicago
$784 Roundtrip, found 11 hours ago
$784
Roundtrip
found 11 hours ago
Select Turkish Airlines flight, departing Sat, Feb 6 from Sofia to Chicago, returning Sat, Mar 13, priced at $784 found 11 hours ago
Lufthansa
Tue, Aug 25 - Sun, Nov 1
SOF
Sofia
ORD
Chicago
$848 Roundtrip, found 2 days ago
$848
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Tue, Aug 25 from Sofia to Chicago, returning Sun, Nov 1, priced at $848 found 2 days ago
Swiss International Air Lines
Wed, Aug 26 - Tue, May 4
SOF
Sofia
ORD
Chicago
$851 Roundtrip, found 6 days ago
$851
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Wed, Aug 26 from Sofia to Chicago, returning Tue, May 4, priced at $851 found 6 days ago
United
Sun, Nov 8 - Thu, Dec 10
SOF
Sofia
ORD
Chicago
$859 Roundtrip, found 7 hours ago
$859
Roundtrip
found 7 hours ago
Select United flight, departing Sun, Nov 8 from Sofia to Chicago, returning Thu, Dec 10, priced at $859 found 7 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 $994
ORD
O'Hare Intl.
Cheapest
Average driving time to city center23 min
Flights from $994

What you need to know for your flight from Sofia to O'Hare Intl.

Sofia (SOF) to Chicago (ORD) at a glance

Travel to Chicago (ORD) from Sofia (SOF) with a selection of airlines on this international long-haul route. Compare the offerings of both full-service and low-cost carriers to discover the itinerary that aligns with your budget, schedule, and travel plans as you delve into the iconic sights and neighborhoods of Chicago. Gather essential information for flights from Sofia Airport (SOF) to O'Hare International Airport (ORD).

  • Fastest flight duration: around 12 hours in-flight, plus roughly 2 hours layover with one stop
  • Route distance: roughly 5,200 miles (8,370 km)
  • Flights per week: around 9 departures on average
  • Typical fares (one-way): economy tickets often range from $320–$990, depending on seasonality and how far ahead you book

Flights from Sofia Airport (SOF) to O'Hare International Airport (ORD)

Based on the latest traveler bookings, here are the top airlines preferred for flights from Sofia to Chicago, particularly those offering one-stop service. Common layover points include Frankfurt International Airport (FRA) with an approximate 2-hour layover, Franz Josef Strauss International Airport (MUC) at around 1 hour and 45 minutes, and Frederic Chopin Airport (WAW) with about a 1 hour and 15-minute layover. This variety gives you the freedom to balance price, total travel time, and cabin class for your ideal itinerary.

  • Lufthansa: As a premier full-service airline, Lufthansa operates one-stop flights with one-way fares generally between $325 and $900. They represent about 38% of departures on this route, featuring an in-flight duration of 12 hours and a total travel time of approximately 14 hours, including layover.
  • LOT-Polish Airlines: This full-service carrier provides one-stop services with one-way ticket prices typically ranging from $320 to $1190. LOT-Polish Airlines accounts for roughly 18% of flights on this route, with a flight time of 12 hours and an overall journey time of around 14 hours, including the layover.
  • Turkish Airlines: Offering one-stop service, this full-service airline has one-way fares that usually fall between $320 and $1145. Turkish Airlines makes up about 14% of departures on this route, featuring an in-flight duration of 12 hours and a total travel time nearing 14 hours, including layover.
  • United: This full-service airline provides one-stop travel options with one-way fares ranging from $410 to $1045. United operates approximately 10% of the departures along this route, with a flight time of 12 hours and an estimated total journey time of 14 hours, including layover.
  • Austrian Airlines: A full-service carrier, Austrian Airlines offers one-stop services with one-way fares typically between $320 and $1020. They account for roughly 9% of departures on this route, featuring a flight time of 12 hours and a total travel duration of about 14 hours, including a layover.

Best time to fly from Sofia (SOF) to Chicago (ORD)

The most popular months for travelers flying from Sofia to Chicago are April, June, and July, when peak temperatures in Chicago reach up to 73.4°F in July. If you prefer quieter travel, consider December, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 33.1°F. For better deals, November usually offers the lowest average one-way fare around $444. Flight availability peaks in June, with approximately 12 flights per week, making it easier to find convenient departure times. January and February have the fewest flights, with approximately 8 flights per week.

  • Cheapest time to fly: November usually offers good deals with average one-way fare around $444, roughly 24% cheaper than the yearly average.
  • More budget-friendly months to fly: March and December typically offer average one-way fares roughly ranging from $445 to $476.
  • Most flight options: June has the highest number of flights from Sofia to Chicago, with approximately 12 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January25.7°F (-3.5°C)Average8$712
February27.0°F (-2.8°C)Average8$549
March37.0°F (2.8°C)Average9$445
April46.0°F (7.8°C)Moderately High11$542
May57.0°F (13.9°C)Average9$497
June67.3°F (19.6°C)Moderately High12$508
July73.4°F (23.0°C)Moderately High11$685
August73.0°F (22.8°C)Average9$751
September67.1°F (19.5°C)Moderately Low9$528
October54.9°F (12.7°C)Moderately Low9$878
November42.3°F (5.7°C)Average9$444
December33.1°F (0.6°C)Moderately Low10$476

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

How to find the best prices for flights from Sofia (SOF) to Chicago (ORD)

Getting some of the best deals on flights from Sofia to Chicago is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2 to 8 weeks in advance, although most travelers tend to book at least 2 months ahead. Departures in the morning (5 AM to 12 PM) not only offer lower prices but are also the most popular. Additionally, flying on Wednesday generally yields cheaper rates, while Saturday remains the most favored travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at O'Hare International Airport from Sofia Airport

Chicago welcomes travelers from Sofia with a range of transport options based on price, convenience, and proximity. Here's how to reach Chicago efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Chicago, with private rides that can be arranged in advance.
  • Car rental: Renting a car from O'Hare International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at O'Hare International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From O'Hare International Airport, O'Hare Station, a metro station, is just a short 0.1-mile walk away, while Rosemont Station, a train station, is located about 2.2 miles from the airport, typically reached by car.

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 $475 and cheap return flights from $753 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, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$753
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 March. 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 $475 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.

*Available to One Key members.

 

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