$379+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — ORD
Aug 28 — Sep 41
Round-trip
1 adult, Economy
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Find cheap flights from Sofia to O'Hare Intl 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 O'Hare Intl
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Best
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 July 29, 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 July 29, 2026.
This FlightHub deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:40 pm
SOF
- ORD
2 stops52h 25m
LOT
Mon 10/55:10 pm
ORD
- SOF
1 stop12h 40m
LOT
Deal found 7/28![LOT logo]()
$802
This CheapOair deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2011:55 am
SOF
- ORD
1 stop30h 05m
Turkish Airlines
Sun 11/298:15 pm
ORD
- SOF
1 stop34h 55m
Turkish Airlines
Deal found 7/25![Turkish Airlines logo]()
$803
This Gotogate deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:30 am
SOF
- ORD
1 stop21h 25m
Lufthansa
Tue 9/1510:30 pm
ORD
- SOF
1 stop16h 20m
Lufthansa
Deal found 7/25![Lufthansa logo]()
$805
This LOT deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:35 pm
SOF
- ORD
2 stops56h 30m
LOT
Fri 10/29:50 pm
ORD
- SOF
1 stop12h 10m
LOT
Deal found 7/28![LOT logo]()
$806
This oojo deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/222:35 pm
SOF
- ORD
1 stop13h 20m
LOT
Tue 1/59:50 pm
ORD
- SOF
1 stop12h 00m
LOT
Deal found 7/28![LOT logo]()
$808
This Mytrip deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:10 am
SOF
- ORD
2 stops21h 05m
Multiple Airlines
Tue 10/133:45 pm
ORD
- SOF
2 stops25h 40m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$809
This Mytrip deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:15 pm
SOF
- ORD
2 stops30h 45m
Multiple Airlines
Wed 9/236:00 pm
ORD
- SOF
3 stops25h 00m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$812
This oojo deal was found by Cheapflights users on 7/29. 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 9/172:35 pm
SOF
- ORD
2 stops32h 35m
LOT
Sat 10/39:50 pm
ORD
- SOF
1 stop12h 10m
LOT
Deal found 7/29![LOT logo]()
$815
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:30 am
SOF
- ORD
1 stop14h 25m
Multiple Airlines
Tue 9/1512:55 pm
ORD
- SOF
2 stops14h 45m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$817
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 July 29, 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 July 29, 2026.
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:30 am
SOF
- ORD
1 stop14h 25m
United Airlines
Wed 9/2310:30 pm
ORD
- SOF
1 stop16h 20m
United Airlines
Deal found 7/25![United Airlines logo]()
$841
This British Airways deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/92:15 pm
SOF
- ORD
2 stops38h 45m
British Airways
Tue 10/137:05 pm
ORD
- SOF
1 stop17h 25m
British Airways
Deal found 7/25![British Airways logo]()
$858
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:20 am
SOF
- ORD
2 stops19h 00m
United Airlines
Sat 11/71:55 pm
ORD
- SOF
2 stops15h 20m
United Airlines
Deal found 7/26![United Airlines logo]()
$843
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:30 am
SOF
- ORD
2 stops16h 22m
United Airlines
Sat 10/312:55 pm
ORD
- SOF
2 stops14h 45m
United Airlines
Deal found 7/25![United Airlines logo]()
$851
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:10 am
SOF
- ORD
2 stops18h 19m
United Airlines
Wed 10/2112:55 pm
ORD
- SOF
2 stops15h 15m
United Airlines
Deal found 7/28![United Airlines logo]()
$852
This United Airlines deal was found by Cheapflights users on 7/29. 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 9/156:10 am
SOF
- ORD
2 stops18h 19m
United Airlines
Thu 11/191:15 pm
ORD
- SOF
2 stops16h 00m
United Airlines
Deal found 7/29![United Airlines logo]()
$853
This United Airlines deal was found by Cheapflights users on 7/29. 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 8/116:10 am
SOF
- ORD
2 stops24h 20m
United Airlines
Mon 8/1710:00 am
ORD
- SOF
2 stops18h 10m
United Airlines
Deal found 7/29![United Airlines logo]()
$856
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:10 am
SOF
- ORD
2 stops24h 20m
United Airlines
Thu 9/246:30 pm
ORD
- SOF
1 stop20h 10m
United Airlines
Deal found 7/27![United Airlines logo]()
$856
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:20 am
SOF
- ORD
2 stops18h 09m
United Airlines
Wed 9/3012:55 pm
ORD
- SOF
2 stops14h 45m
United Airlines
Deal found 7/28![United Airlines logo]()
$856
Last-minute flights from Sofia to O'Hare IntlDiscover last-minute flight deals from Sofia to O'Hare Intl. Data last updated July 29, 2026 and is based on user searches.
Discover last-minute flight deals from Sofia to O'Hare Intl. Data last updated July 29, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:40 pm
SOF
- ORD
2 stops52h 25m
LOT
Mon 10/55:10 pm
ORD
- SOF
1 stop12h 40m
LOT
Deal found 7/28![LOT logo]()
$802
This SWISS deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:05 am
SOF
- ORD
1 stop33h 30m
SWISS
Thu 9/247:05 pm
ORD
- SOF
1 stop33h 50m
SWISS
Deal found 7/27![SWISS logo]()
$826
This SWISS deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:05 am
SOF
- ORD
1 stop33h 30m
SWISS
Tue 10/67:05 pm
ORD
- SOF
1 stop31h 15m
SWISS
Deal found 7/28![SWISS logo]()
$838
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/191:50 pm
SOF
- ORD
2 stops17h 50m
United Airlines
Mon 9/216:00 pm
ORD
- SOF
1 stop21h 15m
United Airlines
Deal found 7/27![United Airlines logo]()
$843
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/191:50 pm
SOF
- ORD
2 stops17h 50m
United Airlines
Sat 9/264:05 pm
ORD
- SOF
1 stop12h 55m
United Airlines
Deal found 7/27![United Airlines logo]()
$844
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/191:50 pm
SOF
- ORD
2 stops17h 50m
United Airlines
Sun 9/208:42 am
ORD
- SOF
2 stops18h 58m
United Airlines
Deal found 7/27![United Airlines logo]()
$847
This LOT deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:45 pm
SOF
- ORD
2 stops52h 25m
LOT
Wed 10/79:50 pm
ORD
- SOF
1 stop12h 10m
LOT
Deal found 7/28![LOT logo]()
$846
This LOT deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:35 pm
SOF
- ORD
2 stops56h 30m
LOT
Fri 10/29:50 pm
ORD
- SOF
1 stop12h 10m
LOT
Deal found 7/28![LOT logo]()
$806
This LOT deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:35 pm
SOF
- ORD
2 stops56h 30m
LOT
Sun 10/45:10 pm
ORD
- SOF
2 stops36h 40m
LOT
Deal found 7/28![LOT logo]()
$821
This Gotogate deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:30 am
SOF
- ORD
1 stop21h 25m
Lufthansa
Tue 9/1510:30 pm
ORD
- SOF
1 stop16h 20m
Lufthansa
Deal found 7/25![Lufthansa logo]()
$805
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:30 am
SOF
- ORD
1 stop14h 25m
Multiple Airlines
Tue 9/1512:55 pm
ORD
- SOF
2 stops14h 45m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$817
This LOT deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LOT 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
Sun 10/49:50 pm
ORD
- SOF
1 stop32h 00m
LOT
Deal found 7/28![LOT logo]()
$831
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 July 29, 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 July 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:45 am
SOF
- ORD
3 stops38h 05m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:35 pm
SOF
- ORD
3 stops29h 40m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$395
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 9/1511:25 pm
SOF
- ORD
3 stops47h 00m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:45 am
SOF
- ORD
3 stops44h 05m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:30 pm
SOF
- ORD
3 stops50h 55m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:35 pm
SOF
- ORD
3 stops52h 15m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/135:05 pm
SOF
- ORD
3 stops53h 20m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:55 pm
SOF
- ORD
3 stops34h 04m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$430
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 July 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $802 (FlightHub) |
One-way from | $379 (Kiwi.com) |
Popular in | August |
Cheapest in | November |
Average price | $865 |
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 July 29, 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
Quickest round-trip
SofiaChicago
SOF - ORD
SOFORD
Sofia
Thu 9/10
6:30 am-12:55 pm
1 stop14h 25m
Chicago O'Hare Intl
Wed 9/23
10:30 pm-10:50 pm
1 stop16h 20m
$841
SofiaChicago
SOF - ORD
SOFORD
Sofia
Fri 10/16
6:20 am-5:20 pm
2 stops19h 00m
Chicago O'Hare Intl
Sat 11/7
1:55 pm-1:15 pm
2 stops15h 20m
$843
SofiaChicago
SOF - ORD
SOFORD
Sofia
Thu 9/17
6:30 am-2:52 pm
2 stops16h 22m
Chicago O'Hare Intl
Sat 10/3
12:55 pm-11:40 am
2 stops14h 45m
$851
SofiaChicago
SOF - ORD
SOFORD
Sofia
Tue 9/8
6:10 am-4:29 pm
2 stops18h 19m
Chicago O'Hare Intl
Wed 10/21
12:55 pm-12:10 pm
2 stops15h 15m
$852
SofiaChicago
SOF - ORD
SOFORD
Sofia
Tue 9/15
6:10 am-4:29 pm
2 stops18h 19m
Chicago O'Hare Intl
Thu 11/19
1:15 pm-1:15 pm
2 stops16h 00m
$853
SofiaChicago
SOF - ORD
SOFORD
Sofia
Tue 8/11
6:10 am-10:30 pm
2 stops24h 20m
Chicago O'Hare Intl
Mon 8/17
10:00 am-12:10 pm
2 stops18h 10m
$856
SofiaChicago
SOF - ORD
SOFORD
Sofia
Tue 8/18
6:10 am-10:30 pm
2 stops24h 20m
Chicago O'Hare Intl
Thu 9/24
6:30 pm-10:40 pm
1 stop20h 10m
$856
SofiaChicago
SOF - ORD
SOFORD
Sofia
Wed 9/9
6:20 am-4:29 pm
2 stops18h 09m
Chicago O'Hare Intl
Wed 9/30
12:55 pm-11:40 am
2 stops14h 45m
$856
SofiaChicago
SOF - ORD
SOFORD
Sofia
Fri 10/9
2:15 pm-9:00 pm
2 stops38h 45m
Chicago O'Hare Intl
Tue 10/13
7:05 pm-8:30 pm
1 stop17h 25m
$858
Cheapest one-way
SofiaChicago
SOF - ORD
SOFORD
Sofia
Sun 9/20
9:05 pm-6:15 pm
1 stop29h 10m
$581
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 July.
| 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
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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 $707). Flying from Sofia to Chicago O'Hare Intl Airport in August is currently the most expensive (average of $885). 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?
Airfare is below average for this route at the moment.
Sofia to Chicago O'Hare Intl Airport flights typically cost between $824 and $991 in August.The cheapest round-trip price found within the last 5 days was $802 on LOT (Aug 18-Oct 5).
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 42% 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 July 29, 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.
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Overall
7.8
Reviews
1 / 20
4.0
OkaySubhash,Jul 2026
CDG - ATL
Food
7.3
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
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 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
Oak Brook
Delavan
Oakbrook Terrace
Gurnee
South Holland
Libertyville
Orland Park
Hoffman Estates
Beloit
Downers Grove
Rockford
Aurora
Racine
Great Lakes
Janesville
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Other flights to O'Hare Intl
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 29, 2026.
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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 July 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$594 | Average$778 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$629 | Average$747 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$652 | Average$766 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$658 | Average$893 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$704 | Average$788 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$711 | Average$852 | FlexibilityNo cancel fee | On-time76% |