$511+ 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 6/22. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — ORD
Jul 14 — Jul 211
Round-trip
1 adult, Economy
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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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Last-minute
One-way
Cheapest flights from Sofia to O'Hare IntlExplore 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 June 14, 2026.
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 June 14, 2026.
This oojo deal was found by Cheapflights users on 6/13. 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 9/95:25 am
SOF
- ORD
1 stop22h 25m
LOT
Wed 9/309:50 pm
ORD
- SOF
1 stop20h 05m
LOT
Deal found 6/13![LOT logo]()
$710
This oojo deal was found by Cheapflights users on 6/10. 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.
Sat 10/312:35 pm
SOF
- ORD
1 stop13h 20m
LOT
Sat 11/219:50 pm
ORD
- SOF
1 stop12h 00m
LOT
Deal found 6/10![LOT logo]()
$714
This oojo deal was found by Cheapflights users on 6/10. 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 9/175:25 am
SOF
- ORD
1 stop22h 25m
LOT
Sat 10/39:50 pm
ORD
- SOF
1 stop20h 05m
LOT
Deal found 6/10![LOT logo]()
$720
This oojo deal was found by Cheapflights users on 6/12. 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 9/235:25 am
SOF
- ORD
1 stop22h 25m
LOT
Wed 10/149:50 pm
ORD
- SOF
1 stop32h 00m
LOT
Deal found 6/12![LOT logo]()
$721
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:25 am
SOF
- ORD
1 stop17h 45m
LOT
Fri 10/165:10 pm
ORD
- SOF
1 stop12h 45m
LOT
Deal found 6/12![LOT logo]()
$723
This oojo deal was found by Cheapflights users on 6/12. 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.
Sat 8/296:45 pm
SOF
- ORD
1 stop28h 25m
LOT
Sat 11/219:50 pm
ORD
- SOF
1 stop12h 00m
LOT
Deal found 6/12![LOT logo]()
$746
This Booking.com deal was found by Cheapflights users on 6/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:45 pm
SOF
- ORD
1 stop33h 05m
LOT
Mon 10/199:50 pm
ORD
- SOF
1 stop12h 10m
LOT
Deal found 6/12![LOT logo]()
$752
This LOT deal was found by Cheapflights users on 6/12. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:25 am
SOF
- ORD
1 stop22h 25m
LOT
Sat 10/179:50 pm
ORD
- SOF
1 stop20h 05m
LOT
Deal found 6/12![LOT logo]()
$753
This KLM deal was found by Cheapflights users on 6/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:00 am
SOF
- ORD
1 stop15h 30m
Multiple Airlines
Sat 10/175:10 pm
ORD
- SOF
1 stop12h 50m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$758
This KLM deal was found by Cheapflights users on 6/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:00 am
SOF
- ORD
2 stops17h 17m
Multiple Airlines
Tue 10/2012:15 pm
ORD
- SOF
2 stops17h 45m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$763
Best flights from Sofia to O'Hare IntlDiscover carefully curated flight deals from Sofia to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 14, 2026.
Discover carefully curated flight deals from Sofia to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 14, 2026.
This KLM deal was found by Cheapflights users on 6/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:00 am
SOF
- ORD
1 stop15h 15m
KLM
Sat 10/31:55 pm
ORD
- SOF
2 stops16h 05m
KLM
Deal found 6/12![KLM logo]()
$767
This Turkish Airlines deal was found by Cheapflights users on 6/9. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/269:10 pm
SOF
- ORD
1 stop20h 30m
Turkish Airlines
Tue 8/258:10 pm
ORD
- SOF
1 stop16h 10m
Turkish Airlines
Deal found 6/9![Turkish Airlines logo]()
$823
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:10 am
SOF
- ORD
1 stop16h 45m
United Airlines
Thu 8/279:40 pm
ORD
- SOF
1 stop17h 35m
United Airlines
Deal found 6/10![United Airlines logo]()
$842
This KLM deal was found by Cheapflights users on 6/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:00 am
SOF
- ORD
2 stops17h 59m
KLM
Wed 9/301:55 pm
ORD
- SOF
2 stops16h 05m
KLM
Deal found 6/13![KLM logo]()
$777
This Turkish Airlines deal was found by Cheapflights users on 6/9. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/261:05 pm
SOF
- ORD
1 stop28h 35m
Turkish Airlines
Thu 8/278:10 pm
ORD
- SOF
1 stop28h 35m
Turkish Airlines
Deal found 6/9![Turkish Airlines logo]()
$823
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:20 am
SOF
- ORD
1 stop14h 35m
United Airlines
Thu 8/279:40 pm
ORD
- SOF
1 stop17h 35m
United Airlines
Deal found 6/10![United Airlines logo]()
$842
This Turkish Airlines deal was found by Cheapflights users on 6/9. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/261:05 pm
SOF
- ORD
1 stop28h 35m
Turkish Airlines
Sat 8/298:10 pm
ORD
- SOF
1 stop28h 35m
Turkish Airlines
Deal found 6/9![Turkish Airlines logo]()
$823
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Tue 7/212:10 pm
SOF
- ORD
1 stop13h 45m
United Airlines
Sat 10/3110:50 pm
ORD
- SOF
1 stop16h 55m
United Airlines
Deal found 6/14![United Airlines logo]()
$843
This Turkish Airlines deal was found by Cheapflights users on 6/9. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/253:50 pm
SOF
- ORD
1 stop25h 50m
Turkish Airlines
Mon 8/248:10 pm
ORD
- SOF
1 stop28h 35m
Turkish Airlines
Deal found 6/9![Turkish Airlines logo]()
$823
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/22:10 pm
SOF
- ORD
1 stop13h 45m
United Airlines
Thu 7/166:30 pm
ORD
- SOF
1 stop20h 10m
United Airlines
Deal found 6/10![United Airlines logo]()
$843
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:20 am
SOF
- ORD
1 stop21h 35m
United Airlines
Fri 8/2810:30 pm
ORD
- SOF
1 stop16h 00m
United Airlines
Deal found 6/9![United Airlines logo]()
$843
Last-minute flights from Sofia to O'Hare IntlDiscover last-minute flight deals from Sofia to O'Hare Intl. Data last updated June 14, 2026 and is based on user searches.
Discover last-minute flight deals from Sofia to O'Hare Intl. Data last updated June 14, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 6/10. 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 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 8/289:50 pm
ORD
- SOF
1 stop12h 10m
LOT
Deal found 6/10![LOT logo]()
$812
This Turkish Airlines deal was found by Cheapflights users on 6/10. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/133:50 pm
SOF
- ORD
1 stop25h 50m
Turkish Airlines
Tue 8/188:10 pm
ORD
- SOF
1 stop16h 10m
Turkish Airlines
Deal found 6/10![Turkish Airlines logo]()
$794
This Gotogate deal was found by Cheapflights users on 6/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/259:10 pm
SOF
- ORD
1 stop20h 30m
Turkish Airlines
Fri 8/711:25 am
ORD
- SOF
1 stop19h 35m
Turkish Airlines
Deal found 6/12![Turkish Airlines logo]()
$765
This oojo deal was found by Cheapflights users on 6/13. 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.
Sun 7/261:05 pm
SOF
- ORD
1 stop28h 35m
Turkish Airlines
Sat 8/811:25 am
ORD
- SOF
1 stop19h 35m
Turkish Airlines
Deal found 6/13![Turkish Airlines logo]()
$763
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/279:10 pm
SOF
- ORD
1 stop20h 30m
Turkish Airlines
Fri 8/288:10 pm
ORD
- SOF
1 stop34h 50m
Turkish Airlines
Deal found 6/9![Turkish Airlines logo]()
$804
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/289:10 pm
SOF
- ORD
1 stop20h 30m
Turkish Airlines
Wed 8/2611:25 am
ORD
- SOF
1 stop13h 20m
Turkish Airlines
Deal found 6/9![Turkish Airlines logo]()
$786
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/289:10 pm
SOF
- ORD
1 stop20h 30m
Turkish Airlines
Tue 8/258:10 pm
ORD
- SOF
1 stop16h 10m
Turkish Airlines
Deal found 6/9![Turkish Airlines logo]()
$816
One-way flights from Sofia to O'Hare IntlSearch for one-way flight options from Sofia to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated June 14, 2026.
Search for one-way flight options from Sofia to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated June 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Mon 6/229:05 pm
SOF
- ORD
2 stops49h 25m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$511
This Orbitz deal was found by Cheapflights users on 6/12. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/189:05 pm
SOF
- ORD
1 stop24h 45m
British Airways
Deal found 6/12![British Airways logo]()
$517
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Sat 6/207:00 pm
SOF
- ORD
2 stops51h 30m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$551
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Sun 6/2112:30 pm
SOF
- ORD
2 stops34h 00m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$576
This Orbitz deal was found by Cheapflights users on 6/12. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/189:05 pm
SOF
- ORD
2 stops30h 30m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$583
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:30 am
SOF
- ORD
2 stops40h 40m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$605
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Sat 8/1511:35 pm
SOF
- ORD
2 stops29h 50m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$623
This Booking.com deal was found by Cheapflights users on 6/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:10 am
SOF
- ORD
1 stop14h 25m
Lufthansa
Deal found 6/10![Lufthansa logo]()
$731
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 June 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $710 (oojo) |
One-way from | $511 (Kiwi.com) |
Popular in | March |
Cheapest in | November |
Average price | $805 |
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 June 14, 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
Cheapest round-trip
SofiaChicago
SOF - ORD
SOFORD
Sofia
Thu 9/17
7:00 am-2:15 pm
1 stop15h 15m
Chicago O'Hare Intl
Sat 10/3
1:55 pm-2:00 pm
2 stops16h 05m
$767
SofiaChicago
SOF - ORD
SOFORD
Sofia
Wed 9/9
7:00 am-4:59 pm
2 stops17h 59m
Chicago O'Hare Intl
Wed 9/30
1:55 pm-2:00 pm
2 stops16h 05m
$777
SofiaChicago
SOF - ORD
SOFORD
Sofia
Sun 7/26
9:10 pm-9:40 am
1 stop20h 30m
Chicago O'Hare Intl
Tue 8/25
8:10 pm-8:20 pm
1 stop16h 10m
$823
SofiaChicago
SOF - ORD
SOFORD
Sofia
Sun 7/26
1:05 pm-9:40 am
1 stop28h 35m
Chicago O'Hare Intl
Thu 8/27
8:10 pm-8:45 am
1 stop28h 35m
$823
SofiaChicago
SOF - ORD
SOFORD
Sofia
Sun 7/26
1:05 pm-9:40 am
1 stop28h 35m
Chicago O'Hare Intl
Sat 8/29
8:10 pm-8:45 am
1 stop28h 35m
$823
SofiaChicago
SOF - ORD
SOFORD
Sofia
Sat 7/25
3:50 pm-9:40 am
1 stop25h 50m
Chicago O'Hare Intl
Mon 8/24
8:10 pm-8:45 am
1 stop28h 35m
$823
SofiaChicago
SOF - ORD
SOFORD
Sofia
Tue 7/28
6:10 am-2:55 pm
1 stop16h 45m
Chicago O'Hare Intl
Thu 8/27
9:40 pm-11:15 pm
1 stop17h 35m
$842
SofiaChicago
SOF - ORD
SOFORD
Sofia
Mon 7/27
6:20 am-12:55 pm
1 stop14h 35m
Chicago O'Hare Intl
Thu 8/27
9:40 pm-11:15 pm
1 stop17h 35m
$842
Quickest round-trip
SofiaChicago
SOF - ORD
SOFORD
Sofia
Tue 7/21
2:10 pm-7:55 pm
1 stop13h 45m
Chicago O'Hare Intl
Sat 10/31
10:50 pm-10:45 pm
1 stop16h 55m
$843
SofiaChicago
SOF - ORD
SOFORD
Sofia
Thu 7/2
2:10 pm-7:55 pm
1 stop13h 45m
Chicago O'Hare Intl
Thu 7/16
6:30 pm-10:40 pm
1 stop20h 10m
$843
Showing 1-10 of 19 resultsSorted by cheapest first
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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
SOF-ORD
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
Prices
More
How far ahead should I book a flight from Sofia to Chicago O'Hare Intl Airport?
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 64 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 $695). Flying from Sofia to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $847). 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?
What’s the top layover airport for flights from Sofia to Chicago O'Hare Intl Airport?
Share of 1-stop round-trip flights from Sofia to Chicago O'Hare Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Warsaw (WAW) – chosen by Cheapflights users on 50% of 1-stop itineraries from Sofia to Chicago O'Hare Intl Airport on Cheapflights.
What’s the cheapest layover airport for flights from Sofia to Chicago O'Hare Intl Airport?
Average round-trip fare for 1-stop flights from Sofia to Chicago O'Hare Intl Airport, 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 O'Hare Intl Airport?
Shortest average travel time for 1-stop one-way flights from Sofia to Chicago O'Hare Intl Airport, 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 O'Hare Intl Airport?
Average layover duration for 1-stop one-way flights from Sofia to Chicago O'Hare Intl Airport, 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.
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 June 14, 2026.
See what other customers who have flown with KLM,LOT, andTurkish 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.
Comfort
7.7
Boarding
7.8
Overall
7.8
Crew
8.4
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Boarding
7.8
Overall
7.8
Crew
8.4
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Boarding
7.8
Overall
7.8
Crew
8.4
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Boarding
7.8
Overall
7.8
Crew
8.4
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Boarding
7.8
Overall
7.8
Crew
8.4
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Comfort
7.7
Boarding
7.8
Overall
7.8
Crew
8.4
Entertainment
7.2
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
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.
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 locationsBenton Harbor
Rosemont
Schaumburg
Naperville
Lake Geneva
Gurnee
Delavan
Oakbrook Terrace
Downers Grove
Des Plaines
Hoffman Estates
Oak Brook
South Holland
Libertyville
Warrenville
Rockford
Great Lakes
Northbrook
Waukegan
Elk Grove Village
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Other flights to O'Hare Intl
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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 June 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$594 | Average$757 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$629 | Average$743 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$652 | Average$769 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$658 | Average$866 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$685 | Average$778 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$710 | Average$826 | FlexibilityNo cancel fee | On-time76% |