$323+ Cheap flights from Sofia (SOF) to Chicago (CHI)
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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — CHI
Sep 15 — Sep 221
Round-trip
1 adult, Economy
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Find cheap flights from Sofia to Chicago with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Sofia to Chicago
Cheapest
Best
Last-minute
One-way
Cheapest flights from Sofia to ChicagoExplore the most affordable flight options available from Sofia to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2026.
Explore the most affordable flight options available from Sofia to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Tue 9/222:35 pm -
1 stop13h 15m
Wed 9/305:10 pm -
1 stop16h 50m
Deal found 8/11![LOT logo]()
$795
This oojo deal was found by Cheapflights users on 8/13. 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.
Wed 9/96:45 pm -
1 stop28h 25m
Sat 9/199:50 pm -
1 stop12h 10m
Deal found 8/13![LOT logo]()
$800
This LOT deal was found by Cheapflights users on 8/11. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/262:35 pm -
2 stops56h 35m
Sat 12/59:50 pm -
1 stop12h 05m
Deal found 8/11![LOT logo]()
$801
This oojo deal was found by Cheapflights users on 8/15. 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.
Wed 10/146:45 pm -
1 stop28h 25m
Wed 11/119:50 pm -
1 stop32h 00m
Deal found 8/15![LOT logo]()
$804
This oojo deal was found by Cheapflights users on 8/12. 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.
Wed 9/26:45 pm -
1 stop28h 25m
Sat 10/3110:50 pm -
1 stop12h 05m
Deal found 8/12![LOT logo]()
$805
This oojo deal was found by Cheapflights users on 8/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:45 pm -
1 stop33h 05m
Thu 10/19:50 pm -
1 stop32h 05m
Deal found 8/11![LOT logo]()
$807
This oojo deal was found by Cheapflights users on 8/13. 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.
Tue 9/82:35 pm -
2 stops32h 35m
Wed 10/219:50 pm -
1 stop12h 10m
Deal found 8/13![LOT logo]()
$811
This LOT deal was found by Cheapflights users on 8/14. 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.
Tue 9/226:45 pm -
1 stop33h 05m
Sat 10/39:50 pm -
1 stop12h 10m
Deal found 8/14![LOT logo]()
$812
This LOT deal was found by Cheapflights users on 8/11. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:45 pm -
1 stop33h 05m
Sun 10/49:50 pm -
1 stop12h 10m
Deal found 8/11![LOT logo]()
$814
This Justfly.com deal was found by Cheapflights users on 8/14. 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 9/252:35 pm -
1 stop13h 15m
Thu 10/19:50 pm -
1 stop12h 10m
Deal found 8/14![LOT logo]()
$815
Best flights from Sofia to ChicagoDiscover carefully curated flight deals from Sofia to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 16, 2026.
Discover carefully curated flight deals from Sofia to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 16, 2026.
This oojo deal was found by Cheapflights users on 8/13. 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.
Wed 9/92:35 pm -
1 stop32h 35m
Wed 9/309:50 pm -
1 stop12h 10m
Deal found 8/13![LOT logo]()
$800
This Kiwi.com deal was found by Cheapflights users on 8/15. 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.
Wed 10/1410:15 am -
2 stops36h 10m
Wed 11/119:50 pm -
1 stop12h 30m
Deal found 8/15![Multiple Airlines logo]()
$812
This Turkish Airlines deal was found by Cheapflights users on 8/11. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:50 pm -
1 stop25h 50m
Wed 12/211:45 am -
1 stop25h 10m
Deal found 8/11![Turkish Airlines logo]()
$854
This United Airlines deal was found by Cheapflights users on 8/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/66:25 am -
1 stop16h 55m
Wed 1/201:12 pm -
2 stops16h 03m
Deal found 8/14![United Airlines logo]()
$859
This Gotogate deal was found by Cheapflights users on 8/15. 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.
Wed 10/76:20 am -
2 stops21h 52m
Fri 10/3010:50 pm -
1 stop17h 05m
Deal found 8/15![Multiple Airlines logo]()
$852
This Turkish Airlines deal was found by Cheapflights users on 8/11. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:50 pm -
1 stop25h 50m
Sun 12/68:15 pm -
1 stop16h 40m
Deal found 8/11![Turkish Airlines logo]()
$854
This United Airlines deal was found by Cheapflights users on 8/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:10 pm -
1 stop13h 45m
Sat 10/310:30 pm -
1 stop16h 20m
Deal found 8/15![United Airlines logo]()
$860
This Turkish Airlines deal was found by Cheapflights users on 8/11. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/271:05 pm -
1 stop28h 35m
Tue 12/111:45 am -
1 stop25h 10m
Deal found 8/11![Turkish Airlines logo]()
$855
This United Airlines deal was found by Cheapflights users on 8/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:20 am -
1 stop21h 35m
Sat 10/312:21 pm -
2 stops15h 54m
Deal found 8/12![United Airlines logo]()
$860
This United Airlines deal was found by Cheapflights users on 8/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:20 am -
1 stop14h 35m
Sat 9/193:00 pm -
2 stops19h 40m
Deal found 8/15![United Airlines logo]()
$861
Last-minute flights from Sofia to ChicagoDiscover last-minute flight deals from Sofia to Chicago. Data last updated August 16, 2026 and is based on user searches.
Discover last-minute flight deals from Sofia to Chicago. Data last updated August 16, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 8/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:45 pm -
1 stop33h 05m
Thu 10/19:50 pm -
1 stop32h 05m
Deal found 8/11![LOT logo]()
$807
This oojo deal was found by Cheapflights users on 8/12. 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.
Wed 9/26:45 pm -
1 stop28h 25m
Sat 10/3110:50 pm -
1 stop12h 05m
Deal found 8/12![LOT logo]()
$805
This oojo deal was found by Cheapflights users on 8/13. 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.
Tue 9/82:35 pm -
2 stops32h 35m
Wed 10/219:50 pm -
1 stop12h 10m
Deal found 8/13![LOT logo]()
$811
This oojo deal was found by Cheapflights users on 8/13. 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.
Wed 9/96:45 pm -
1 stop28h 25m
Sat 9/199:50 pm -
1 stop12h 10m
Deal found 8/13![LOT logo]()
$800
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Tue 9/222:35 pm -
1 stop13h 15m
Wed 9/305:10 pm -
1 stop16h 50m
Deal found 8/11![LOT logo]()
$795
This LOT deal was found by Cheapflights users on 8/14. 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.
Tue 9/226:45 pm -
1 stop33h 05m
Sat 10/39:50 pm -
1 stop12h 10m
Deal found 8/14![LOT logo]()
$812
This LOT deal was found by Cheapflights users on 8/11. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:45 pm -
1 stop33h 05m
Sun 10/49:50 pm -
1 stop12h 10m
Deal found 8/11![LOT logo]()
$814
This Justfly.com deal was found by Cheapflights users on 8/14. 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 9/252:35 pm -
1 stop13h 15m
Thu 10/19:50 pm -
1 stop12h 10m
Deal found 8/14![LOT logo]()
$815
This LOT deal was found by Cheapflights users on 8/11. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/262:35 pm -
2 stops56h 35m
Sat 12/59:50 pm -
1 stop12h 05m
Deal found 8/11![LOT logo]()
$801
One-way flights from Sofia to ChicagoSearch for one-way flight options from Sofia to Chicago. Find affordable one-way fares based on user searches. Data last updated August 16, 2026.
Search for one-way flight options from Sofia to Chicago. Find affordable one-way fares based on user searches. Data last updated August 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Wed 9/96:30 pm -
3 stops32h 45m
Deal found 8/13![Multiple Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 11/56:00 am -
3 stops43h 20m
Deal found 8/14![Multiple Airlines logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 8/15. 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.
Wed 10/286:00 am -
3 stops43h 50m
Deal found 8/15![Multiple Airlines logo]()
$408
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Wed 11/256:30 am -
3 stops42h 50m
Deal found 8/11![Multiple Airlines logo]()
$415
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Mon 9/146:45 pm -
3 stops51h 50m
Deal found 8/11![Multiple Airlines logo]()
$441
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/1710:10 am -
3 stops56h 50m
Deal found 8/13![Multiple Airlines logo]()
$454
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Mon 9/146:55 pm -
3 stops53h 05m
Deal found 8/11![Multiple Airlines logo]()
$457
This Trip.com deal was found by Cheapflights users on 8/13. 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.
Thu 9/175:15 pm -
2 stops30h 45m
Deal found 8/13![Multiple Airlines logo]()
$485
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/32:40 pm -
3 stops35h 35m
Deal found 8/13![Multiple Airlines logo]()
$488
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Wed 9/25:15 pm -
3 stops53h 20m
Deal found 8/13![Multiple Airlines logo]()
$571
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Wed 11/258:15 pm -
2 stops48h 09m
Deal found 8/11![Multiple Airlines logo]()
$584
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Wed 9/99:40 pm -
3 stops45h 20m
Deal found 8/13![Multiple Airlines logo]()
$602
Find flight deals from Sofia to Chicago
Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Chicago (CHI). 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 August 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $795 (Mytrip) |
One-way from | $323 (Kiwi.com) |
Popular in | August |
Cheapest in | January |
Average price | $880 |
Cheapflights Fare Finder
Customize your flight search to find flights from Sofia to Chicago 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 August 16, 2026.
Use the filters below to find and compare flights from Sofia to Chicago that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SofiaChicago
SOF Sofia - ORD Chicago O'Hare Intl
SOFORD
Sofia
Wed 9/9
2:35 pm-3:10 pm
1 stop32h 35m
Chicago O'Hare Intl
Wed 9/30
9:50 pm-6:00 pm
1 stop12h 10m
$800
SofiaChicago
SOF Sofia - ORD Chicago O'Hare Intl
SOFORD
Sofia
Wed 10/14
10:15 am-2:25 pm
2 stops36h 10m
Chicago O'Hare Intl
Wed 11/11
9:50 pm-6:20 pm
1 stop12h 30m
$812
SofiaChicago
SOF Sofia - ORD Chicago O'Hare Intl
SOFORD
Sofia
Wed 10/7
6:20 am-8:12 pm
2 stops21h 52m
Chicago O'Hare Intl
Fri 10/30
10:50 pm-10:55 pm
1 stop17h 05m
$852
SofiaChicago
SOF Sofia - ORD Chicago O'Hare Intl
SOFORD
Sofia
Sun 9/27
3:50 pm-9:40 am
1 stop25h 50m
Chicago O'Hare Intl
Wed 12/2
11:45 am-8:55 pm
1 stop25h 10m
$854
SofiaChicago
SOF Sofia - ORD Chicago O'Hare Intl
SOFORD
Sofia
Mon 9/28
3:50 pm-9:40 am
1 stop25h 50m
Chicago O'Hare Intl
Sun 12/6
8:15 pm-8:55 pm
1 stop16h 40m
$854
SofiaChicago
SOF Sofia - ORD Chicago O'Hare Intl
SOFORD
Sofia
Sun 9/27
1:05 pm-9:40 am
1 stop28h 35m
Chicago O'Hare Intl
Tue 12/1
11:45 am-8:55 pm
1 stop25h 10m
$855
SofiaChicago
SOF Sofia - ORD Chicago O'Hare Intl
SOFORD
Sofia
Wed 1/6
6:25 am-3:20 pm
1 stop16h 55m
Chicago O'Hare Intl
Wed 1/20
1:12 pm-1:15 pm
2 stops16h 03m
$859
Quickest round-trip
SofiaChicago
SOF Sofia - ORD Chicago O'Hare Intl
SOFORD
Sofia
Thu 9/17
2:10 pm-7:55 pm
1 stop13h 45m
Chicago O'Hare Intl
Sat 10/3
10:30 pm-10:50 pm
1 stop16h 20m
$860
SofiaChicago
SOF Sofia - ORD Chicago O'Hare Intl
SOFORD
Sofia
Fri 9/4
6:20 am-7:55 pm
1 stop21h 35m
Chicago O'Hare Intl
Sat 10/31
2:21 pm-1:15 pm
2 stops15h 54m
$860
SofiaChicago
SOF Sofia - ORD Chicago O'Hare Intl
SOFORD
Sofia
Sat 9/5
6:20 am-12:55 pm
1 stop14h 35m
Chicago O'Hare Intl
Sat 9/19
3:00 pm-6:40 pm
2 stops19h 40m
$861
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from Sofia to Chicago
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 Chicago in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on Sofia-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sofia-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sofia-Chicago flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Sofia-Chicago 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 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 Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from Sofia with our price prediction graph.
SOF-CHI
SOF-ORD
SOF-MDW
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
SOF-CHI
SOF-ORD
SOF-MDW
What is the cheapest month to book a flight from Sofia to Chicago?
Currently, November is the cheapest month in which you can book a flight from Sofia to Chicago (average of $752). Flying from Sofia to Chicago in August is currently the most expensive (average of $900). 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?
Airfare is below average for this route at the moment.
Sofia to Chicago flights typically cost between $810 and $1,087 in September.The cheapest round-trip price found within the last 5 days was $795 on LOT (Sep 22-Sep 30).
What’s the top layover airport for flights from Sofia to Chicago?
Share of 1-stop round-trip flights from Sofia to Chicago chosen by Cheapflights users in the past 12 months, using the same layover each way.
Warsaw (WAW) – chosen by Cheapflights users on 48% of 1-stop itineraries from Sofia to Chicago on Cheapflights.
What’s the cheapest layover airport for flights from Sofia to Chicago?
Average round-trip fare for 1-stop flights from Sofia to Chicago, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Warsaw (WAW) is the most affordable 1-stop option, with an average round-trip price of $652.
What’s the fastest layover option from Sofia to Chicago?
Shortest average travel time for 1-stop one-way flights from Sofia to Chicago, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Warsaw (WAW) have the shortest average one-way travel time for 1-stop routes: 13h 20m.
Which airport typically offers the quickest layover for flights from Sofia to Chicago?
Average layover duration for 1-stop one-way flights from Sofia to Chicago, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Warsaw (WAW) offer the fastest connection on this route, with an average layover time of 1h 05m.
How far ahead should I book a flight from Sofia to Chicago?
The best time to book flights from Sofia to Chicago is 43 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Chicago
Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated August 16, 2026.
Read through reviews of airlines operating flights from Sofia to Chicago, such as KLM,LOT, andTurkish Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.2
Crew
8.4
Comfort
7.7
Boarding
7.8
Food
7.3
Overall
7.8
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Entertainment
7.2
Crew
8.4
Comfort
7.7
Boarding
7.8
Food
7.3
Overall
7.8
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Entertainment
7.2
Crew
8.4
Comfort
7.7
Boarding
7.8
Food
7.3
Overall
7.8
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Entertainment
7.2
Crew
8.4
Comfort
7.7
Boarding
7.8
Food
7.3
Overall
7.8
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Entertainment
7.2
Crew
8.4
Comfort
7.7
Boarding
7.8
Food
7.3
Overall
7.8
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Entertainment
7.2
Crew
8.4
Comfort
7.7
Boarding
7.8
Food
7.3
Overall
7.8
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Related info for your journey
Find useful and relevant information for your journey from Sofia to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Chicago?
Book flights to Chicago if you plan to visit one of these locationsBenton Harbor
Lansing
Merrillville
Valparaiso
Hammond
Saint Joseph
Porter
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Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 16, 2026.
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Browse other Sofia and Chicago flight options. Last updated on August 16, 2026.
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Top 6 airlines flying from Sofia to Chicago
Discover the top 6 airlines that operate flights from Sofia to Chicago. 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 August 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$627 | Average$801 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$629 | Average$754 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$652 | Average$766 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$710 | Average$793 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$712 | Average$849 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$806 | Average$893 | FlexibilityNo cancel fee | On-time78% |