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$307+ Cheap flights from O'Hare Intl (ORD) to Bulgaria

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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOF
Aug 24 — Aug 311
Mon 8/24
Mon 8/31
1 adult, Economy
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Cheap flight deals from O'Hare Intl to Bulgaria

Cheapest flights from O'Hare Intl to Bulgaria
Explore the most affordable flight options available from O'Hare Intl to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.

This Booking.com deal was found by Cheapflights users on 7/23. 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 9/78:10 pm
ORD
-
VAR
1 stop28h 20m
Turkish Airlines
Mon 9/2110:10 pm
VAR
-
ORD
1 stop19h 30m
Turkish Airlines
Deal found 7/23$646
This Gotogate deal was found by Cheapflights users on 7/24. 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.
Tue 9/88:10 pm
ORD
-
VAR
1 stop17h 15m
Turkish Airlines
Tue 9/159:20 am
VAR
-
ORD
1 stop32h 20m
Turkish Airlines
Deal found 7/24$697
This Gotogate deal was found by Cheapflights users on 7/24. 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.
Mon 9/78:10 pm
ORD
-
VAR
1 stop28h 20m
Turkish Airlines
Mon 9/1410:15 pm
VAR
-
ORD
1 stop19h 25m
Turkish Airlines
Deal found 7/24$740
This FlightHub deal was found by Cheapflights users on 7/24. 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.
Wed 8/128:10 pm
ORD
-
VAR
1 stop17h 10m
Turkish Airlines
Tue 9/159:20 am
VAR
-
ORD
1 stop32h 20m
Turkish Airlines
Deal found 7/24$741
This Mytrip deal was found by Cheapflights users on 7/24. 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.
Tue 9/811:25 am
ORD
-
VAR
3 stops32h 00m
Multiple Airlines
Tue 9/153:40 pm
VAR
-
ORD
2 stops26h 00m
Multiple Airlines
Deal found 7/24$775
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 9/144:20 pm
ORD
-
SOF
1 stop11h 20m
Austrian Airlines
Mon 11/96:45 pm
SOF
-
ORD
2 stops32h 10m
Austrian Airlines
Deal found 7/24$776
This Mytrip deal was found by Cheapflights users on 7/24. 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.
Tue 9/88:10 pm
ORD
-
SOF
3 stops22h 50m
Multiple Airlines
Tue 9/152:50 pm
SOF
-
ORD
2 stops35h 25m
Multiple Airlines
Deal found 7/24$777
This Turkish Airlines deal was found by Cheapflights users on 7/24. 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 8/2311:25 am
ORD
-
SOF
1 stop13h 20m
Turkish Airlines
Wed 9/93:50 pm
SOF
-
ORD
1 stop25h 50m
Turkish Airlines
Deal found 7/24$780
This Turkish 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:25 am
ORD
-
SOF
1 stop19h 35m
Turkish Airlines
Wed 9/303:50 pm
SOF
-
ORD
1 stop25h 50m
Turkish Airlines
Deal found 7/25$781
This United deal was found by Cheapflights users on 7/24. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:35 pm
ORD
-
SOF
1 stop12h 35m
Multiple Airlines
Fri 11/66:25 am
SOF
-
ORD
2 stops16h 27m
Multiple Airlines
Deal found 7/24$782
This Gotogate deal was found by Cheapflights users on 7/23. 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 10/222:15 pm
ORD
-
SOF
2 stops15h 05m
Multiple Airlines
Thu 11/56:25 am
SOF
-
ORD
2 stops16h 27m
Multiple Airlines
Deal found 7/23$783
This Mytrip deal was found by Cheapflights users on 7/23. 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.
Mon 9/218:45 am
ORD
-
SOF
3 stops32h 20m
Multiple Airlines
Sat 10/314:55 pm
SOF
-
ORD
2 stops30h 35m
Multiple Airlines
Deal found 7/23$784

Find flight deals from O'Hare Intl to Bulgaria

Keep the following information in mind while searching for O'Hare Intl to Bulgaria flight deals. Data was last updated July 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$646
(Booking.com)

One-way from

$307
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$1,172
Provider with most accurate pricing for Chicago (CHI)-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Sofia flights.
Search Deals
From Chicago O'Hare Intl to Bulgaria
Search Deals
One-way flight from Chicago O'Hare Intl to Bulgaria
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($251 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl to Bulgaria 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 25, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Bulgaria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 10/3

11:20 pm-3:00 am

1 stop19h 40m

Sofia

Thu 2/25

4:05 pm-2:45 pm

1 stop30h 40m

$784

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 9/11

8:10 pm-3:00 pm

1 stop34h 50m

Sofia

Sat 9/19

3:50 pm-9:40 am

1 stop25h 50m

$795

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 11/22

10:32 am-11:50 am

2 stops17h 18m

Sofia

Tue 3/16

6:25 am-6:27 pm

2 stops19h 02m

$809

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 9/2

8:10 pm-11:45 am

1 stop31h 35m

Sofia

Fri 9/18

3:50 pm-9:40 am

1 stop25h 50m

$831

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 9/1

4:00 pm-6:40 pm

2 stops18h 40m

Sofia

Wed 9/16

1:50 pm-7:55 pm

1 stop14h 05m

$840

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 8/16

8:10 pm-8:45 am

1 stop28h 35m

Sofia

Mon 9/7

3:50 pm-9:40 am

1 stop25h 50m

$840
Quickest round-trip

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 10/4

9:40 pm-6:40 pm

1 stop13h 00m

Sofia

Wed 2/24

6:25 am-2:52 pm

2 stops16h 27m

$842

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 9/14

8:42 am-12:10 pm

2 stops19h 28m

Sofia

Mon 9/28

3:40 pm-12:35 pm

1 stop28h 55m

$846

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Tue 9/1

4:05 pm-6:45 pm

1 stop18h 40m

Varna

Tue 9/8

9:10 pm-3:55 pm

1 stop26h 45m

$848

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Mon 8/24

8:10 pm-8:30 am

1 stop28h 20m

Varna

Sun 10/18

9:20 am-9:40 am

1 stop32h 20m

$850

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Showing 1-10 of 32 resultsSorted by cheapest first
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Best time to book a flight from O'Hare Intl to Bulgaria

Have a flexible travel schedule? Discover the best time to fly to Bulgaria from O'Hare Intl with our price prediction graph.
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 Bulgaria

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Bulgaria?

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Bulgaria (average of $577). Flying from Chicago O'Hare Intl Airport to Bulgaria in June is currently the most expensive (average of $1,158). 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 far ahead should I book a flight from Chicago O'Hare Intl Airport to Bulgaria?

The best time to book flights from Chicago O'Hare Intl Airport to Bulgaria is 34 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Bulgaria

Get insights into the airlines that provide service to Bulgaria. 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 Bulgaria. Reviews last updated July 25, 2026.
Read reviews from past customers who have flown Austrian Airlines,LOT, andTurkish Airlines from Chicago O'Hare Intl Airport to Bulgaria. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
949 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Boarding

7.6

Entertainment

6.8

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Austrian Airlines
7.6
Good
949 reviews
Austrian Airlines
7.6
Good
949 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Boarding

7.6

Entertainment

6.8

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
LOT
7.5
Good
1,212 reviews
Austrian Airlines
7.6
Good
949 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Boarding

7.6

Entertainment

6.8

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Turkish Airlines
7.4
Good
4,452 reviews
Austrian Airlines
7.6
Good
949 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Boarding

7.6

Entertainment

6.8

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
United Airlines
7.4
Good
10,033 reviews
Austrian Airlines
7.6
Good
949 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Boarding

7.6

Entertainment

6.8

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Lufthansa
6.8
Okay
8,157 reviews
Austrian Airlines
7.6
Good
949 reviews

Overall

7.6

Comfort

7.3

Crew

8.1

Boarding

7.6

Entertainment

6.8

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Bulgaria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago O'Hare Intl Airport to Bulgaria?

    For as low as $809, Air Serbia can have you in Bulgaria from Chicago O'Hare Intl Airport in 17h 18m. Chicago O'Hare Intl Airport and Bulgaria are separated by a distance of 5194 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Bulgaria one-way?

    $275 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Turkish Airlines and Air Serbia, with prices starting from $295 and $353, respectively.

  • What are the most popular routes from Chicago O'Hare Intl Airport to Bulgaria?

    The most popular flight routes from Chicago O'Hare Intl Airport to Bulgaria are Chicago O'Hare Intl - Sofia, Chicago O'Hare Intl - Bourgas and Chicago O'Hare Intl - Varna.

  • Can I find deals for flights from O'Hare Intl to Bulgaria that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Bulgaria flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Bulgaria?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Bulgaria.

  • Can I find deals for business class flights from O'Hare Intl to Bulgaria?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Bulgaria by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Bulgaria?

    Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Bulgaria (average of $577). Flying from Chicago O'Hare Intl Airport to Bulgaria in June is currently the most expensive (average of $1,158). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from O'Hare Intl to Bulgaria

Discover the top 10 airlines that operate flights from O'Hare Intl to Bulgaria. 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 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$520Average$781FlexibilityNo cancel feeOn-time77%
LOTCheapest$578Average$960FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$580Average$1,005FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$585Average$895FlexibilityNo cancel feeOn-time77%
SWISSCheapest$594Average$837FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$608Average$817FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$609Average$649FlexibilityNo cancel feeOn-time70%
KLMCheapest$614Average$814FlexibilityNo cancel feeOn-time75%
Austrian AirlinesCheapest$646Average$939FlexibilityNo cancel feeOn-time78%
Air SerbiaCheapest$703Average$869FlexibilityNo cancel feeOn-timeN/A

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