$330+ Cheap flights from O'Hare Intl (ORD) to Sofia (SOF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOF
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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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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Cheapest flights from O'Hare Intl to SofiaExplore the most affordable flight options available from O'Hare Intl to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
Explore the most affordable flight options available from O'Hare Intl to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
This Gotogate deal was found by Cheapflights users on 9/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:45 am -
2 stops17h 35m
Fri 10/166:10 am -
1 stop14h 25m
Deal found 9/9![Multiple Airlines logo]()
$696
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Sun 9/202:20 pm -
1 stop16h 35m
Fri 10/166:10 am -
1 stop14h 25m
Deal found 9/10![Multiple Airlines logo]()
$697
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/222:40 pm -
2 stops13h 30m
Mon 1/253:00 pm -
1 stop33h 15m
Deal found 9/9![SWISS logo]()
$698
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Tue 9/2212:55 pm -
2 stops15h 15m
Fri 1/296:25 am -
1 stop14h 45m
Deal found 9/9![United Airlines logo]()
$699
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:55 pm -
2 stops14h 45m
Tue 10/138:00 am -
1 stop13h 20m
Deal found 9/10![Austrian Airlines logo]()
$700
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/119:40 pm -
1 stop17h 35m
Sat 10/246:20 am -
1 stop14h 35m
Deal found 9/9![Lufthansa logo]()
$702
This Justfly.com deal was found by Cheapflights users on 9/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:40 pm -
1 stop17h 35m
Thu 2/256:00 am -
1 stop20h 25m
Deal found 9/9![Lufthansa logo]()
$703
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:48 pm -
2 stops41h 32m
Fri 10/162:15 pm -
2 stops34h 35m
Deal found 9/9![British Airways logo]()
$704
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/266:00 pm -
1 stop11h 15m
Sun 2/76:25 am -
2 stops16h 27m
Deal found 9/10![United Airlines logo]()
$705
This KAYAK deal was found by Cheapflights users on 9/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:05 pm -
1 stop12h 00m
Mon 1/253:00 pm -
1 stop33h 15m
Deal found 9/9![SWISS logo]()
$706
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:18 pm -
2 stops36h 42m
Thu 1/286:00 am -
2 stops40h 32m
Deal found 9/9![Air Canada logo]()
$707
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/214:20 pm -
1 stop11h 20m
Wed 9/3011:05 am -
1 stop33h 30m
Deal found 9/9![Multiple Airlines logo]()
$708
Best flights from O'Hare Intl to SofiaDiscover carefully curated flight deals from O'Hare Intl to Sofia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from O'Hare Intl to Sofia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Mon 9/286:00 pm -
1 stop21h 15m
Sun 1/312:00 pm -
1 stop32h 10m
Deal found 9/9![United Airlines logo]()
$719
This Turkish Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 9/298:10 pm -
1 stop34h 50m
Fri 1/299:45 pm -
1 stop28h 35m
Deal found 9/7![Turkish Airlines logo]()
$755
This British Airways deal was found by Cheapflights users on 9/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/269:50 pm -
1 stop34h 30m
Mon 1/115:15 pm -
1 stop28h 30m
Deal found 9/9![British Airways logo]()
$782
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Thu 10/110:30 pm -
1 stop11h 55m
Wed 1/276:25 am -
1 stop16h 55m
Deal found 9/9![United Airlines logo]()
$726
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/109:45 pm -
2 stops29h 55m
Sat 10/246:20 am -
2 stops25h 11m
Deal found 9/10![United Airlines logo]()
$728
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Mon 9/214:05 pm -
1 stop13h 20m
Sun 1/246:25 am -
1 stop16h 55m
Deal found 9/9![United Airlines logo]()
$729
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Tue 9/2210:50 am -
2 stops17h 20m
Sun 1/246:25 am -
1 stop14h 45m
Deal found 9/9![United Airlines logo]()
$737
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Mon 12/286:00 pm -
1 stop11h 15m
Tue 1/127:55 am -
2 stops20h 13m
Deal found 9/9![United Airlines logo]()
$751
This United Airlines deal was found by Cheapflights users on 9/6. 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 12/286:00 pm -
1 stop11h 15m
Sat 1/96:00 am -
1 stop16h 10m
Deal found 9/6![United Airlines logo]()
$777
This United Airlines deal was found by Cheapflights users on 9/8. 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 1/306:00 pm -
1 stop11h 15m
Wed 2/36:25 am -
1 stop16h 55m
Deal found 9/8![United Airlines logo]()
$780
This United Airlines deal was found by Cheapflights users on 9/8. 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 1/28:50 pm -
2 stops42h 05m
Sun 1/176:25 am -
1 stop16h 55m
Deal found 9/8![United Airlines logo]()
$788
Last-minute flights from O'Hare Intl to SofiaDiscover last-minute flight deals from O'Hare Intl to Sofia. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to Sofia. Data last updated September 11, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 9/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:45 am -
2 stops17h 35m
Fri 10/166:10 am -
1 stop14h 25m
Deal found 9/9![Multiple Airlines logo]()
$696
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:48 pm -
2 stops41h 32m
Fri 10/162:15 pm -
2 stops34h 35m
Deal found 9/9![British Airways logo]()
$704
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Sun 9/202:20 pm -
1 stop16h 35m
Fri 10/166:10 am -
1 stop14h 25m
Deal found 9/10![Multiple Airlines logo]()
$697
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:18 pm -
2 stops36h 42m
Thu 1/286:00 am -
2 stops40h 32m
Deal found 9/9![Air Canada logo]()
$707
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/214:20 pm -
1 stop11h 20m
Wed 9/3011:05 am -
1 stop33h 30m
Deal found 9/9![Multiple Airlines logo]()
$708
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/222:40 pm -
2 stops13h 30m
Mon 1/253:00 pm -
1 stop33h 15m
Deal found 9/9![SWISS logo]()
$698
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Tue 9/2212:55 pm -
2 stops15h 15m
Fri 1/296:25 am -
1 stop14h 45m
Deal found 9/9![United Airlines logo]()
$699
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:55 pm -
2 stops14h 45m
Tue 10/138:00 am -
1 stop13h 20m
Deal found 9/10![Austrian Airlines logo]()
$700
This Justfly.com deal was found by Cheapflights users on 9/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2910:30 pm -
1 stop16h 20m
Wed 1/276:00 am -
2 stops15h 10m
Deal found 9/9![Lufthansa logo]()
$705
This KAYAK deal was found by Cheapflights users on 9/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:05 pm -
1 stop12h 00m
Mon 1/253:00 pm -
1 stop33h 15m
Deal found 9/9![SWISS logo]()
$706
This Justfly.com deal was found by Cheapflights users on 9/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:40 pm -
1 stop17h 35m
Thu 2/256:00 am -
1 stop20h 25m
Deal found 9/9![Lufthansa logo]()
$703
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/119:40 pm -
1 stop17h 35m
Sat 10/246:20 am -
1 stop14h 35m
Deal found 9/9![Lufthansa logo]()
$702
One-way flights from O'Hare Intl to SofiaSearch for one-way flight options from O'Hare Intl to Sofia. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from O'Hare Intl to Sofia. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/87:25 pm -
3 stops45h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$330
This British Airways deal was found by Cheapflights users on 9/8. 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.
Tue 12/299:50 pm -
1 stop14h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![British Airways logo]()
$334
This United Airlines deal was found by Cheapflights users on 9/8. 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 12/306:00 pm -
1 stop11h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![United Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 12/306:30 pm -
3 stops32h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 11/36:30 pm -
3 stops42h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$352
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 9/217:25 pm -
3 stops34h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 9/8. 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 12/296:10 pm -
2 stops35h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Sun 1/37:55 am -
2 stops21h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![United Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 9/227:25 pm -
3 stops33h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$363
This Ovago deal was found by Cheapflights users on 9/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/28:55 pm -
2 stops35h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![British Airways logo]()
$373
Find flight deals from O'Hare Intl to Sofia
Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Sofia (SOF). 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 September 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $698 (KAYAK) |
One-way from | $309 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $756 |
Cheapflights Fare Finder
Customize your flight search to find flights from O'Hare Intl to Sofia 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 7,457,451 searches. Data last updated September 11, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Sofia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Tue 12/29
9:50 pm-8:10 pm
1 stop14h 20m
Sofia
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$334
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Mon 1/4
1:00 pm-10:55 pm
2 stops25h 55m
Sofia
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$348
Quickest round-trip
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Sat 1/2
9:50 pm-6:20 pm
1 stop12h 30m
Sofia
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$393
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Fri 1/1
9:00 am-1:15 pm
2 stops20h 15m
Sofia
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$398
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Wed 9/23
7:25 pm-9:45 pm
3 stops42h 20m
Sofia
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$407
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Sun 9/20
7:05 pm-12:45 pm
3 stops57h 40m
Sofia
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$430
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Tue 12/29
6:30 pm-9:25 pm
3 stops18h 55m
Sofia
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$461
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Wed 9/16
6:00 pm-3:30 pm
2 stops37h 30m
Sofia
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$463
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Sat 9/19
3:50 pm-1:15 am
3 stops49h 25m
Sofia
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$496
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Fri 1/1
5:45 pm-2:15 pm
3 stops60h 30m
Sofia
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$507
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from O'Hare Intl to Sofia
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 O'Hare Intl to Sofia in September.
| 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 Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-Sofia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-Sofia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Sofia flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-Sofia 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 Chicago O'Hare Intl Airport-Sofia 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 O'Hare Intl to Sofia
Have a flexible travel schedule? Discover the best time to fly to Sofia from O'Hare Intl with our price prediction graph.
ORD-SOF
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 Chicago O'Hare Intl Airport to Sofia
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How far ahead should I book a flight from Chicago O'Hare Intl Airport to Sofia?
The best time to book flights from Chicago O'Hare Intl Airport to Sofia is 47 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.
What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Sofia?
Currently, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Sofia (average of $595). Flying from Chicago O'Hare Intl Airport to Sofia in June is currently the most expensive (average of $1,144). 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 Chicago O'Hare Intl Airport to Sofia?
Airfare is typical for this route at the moment.
Chicago O'Hare Intl Airport to Sofia flights typically cost between $661 and $850 in February.The cheapest round-trip price found within the last 5 days was $698 on Air Canada (Feb 27-Mar 7).
What’s the top layover airport for flights from Chicago O'Hare Intl Airport to Sofia?
Share of 1-stop round-trip flights from Chicago O'Hare Intl Airport to Sofia chosen by Cheapflights users in the past 12 months, using the same layover each way.
Frankfurt am Main (FRA) – chosen by Cheapflights users on 47% of 1-stop itineraries from Chicago O'Hare Intl Airport to Sofia on Cheapflights.
What’s the cheapest layover airport for flights from Chicago O'Hare Intl Airport to Sofia?
Average round-trip fare for 1-stop flights from Chicago O'Hare Intl Airport to Sofia, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $674.
What’s the fastest layover option from Chicago O'Hare Intl Airport to Sofia?
Shortest average travel time for 1-stop one-way flights from Chicago O'Hare Intl Airport to Sofia, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Zurich (ZRH) have the shortest average one-way travel time for 1-stop routes: 11h 40m.
Which airport typically offers the quickest layover for flights from Chicago O'Hare Intl Airport to Sofia?
Average layover duration for 1-stop one-way flights from Chicago O'Hare Intl Airport to Sofia, 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 10m.
Reviews of airlines servicing Sofia
Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated September 11, 2026.
Get a feel of what it's like to fly with LOT,SWISS, andTurkish Airlines from Chicago O'Hare Intl Airport to Sofia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
6.9
Food
7.2
Overall
7.5
Crew
8.2
Boarding
7.6
Comfort
7.5
Reviews
1 / 20
10.0
ExcellentRami,Sep 2025
LAX - WAW
Entertainment
6.9
Food
7.2
Overall
7.5
Crew
8.2
Boarding
7.6
Comfort
7.5
Reviews
1 / 20
10.0
ExcellentRami,Sep 2025
LAX - WAW
Entertainment
6.9
Food
7.2
Overall
7.5
Crew
8.2
Boarding
7.6
Comfort
7.5
Reviews
1 / 20
10.0
ExcellentRami,Sep 2025
LAX - WAW
Entertainment
6.9
Food
7.2
Overall
7.5
Crew
8.2
Boarding
7.6
Comfort
7.5
Reviews
1 / 20
10.0
ExcellentRami,Sep 2025
LAX - WAW
Entertainment
6.9
Food
7.2
Overall
7.5
Crew
8.2
Boarding
7.6
Comfort
7.5
Reviews
1 / 20
10.0
ExcellentRami,Sep 2025
LAX - WAW
Entertainment
6.9
Food
7.2
Overall
7.5
Crew
8.2
Boarding
7.6
Comfort
7.5
Reviews
1 / 20
10.0
ExcellentRami,Sep 2025
LAX - WAW
Related info for your journey
Find useful and relevant information for your journey from O'Hare Intl to Sofia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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O'Hare Intl and Sofia flights
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Top 10 airlines flying from O'Hare Intl to Sofia
Discover the top 10 airlines that operate flights from O'Hare Intl to Sofia. 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 7,457,451 searches. Data last updated September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$451 | Average$1,036 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$525 | Average$723 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$583 | Average$984 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$585 | Average$870 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$593 | Average$840 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$608 | Average$1,049 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$609 | Average$961 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$609 | Average$727 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$613 | Average$838 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$722 | Average$946 | FlexibilityNo cancel fee | On-time78% |