Chicago

$350+ Cheap flights from Bulgaria to Chicago (CHI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — CHI
May 17 — May 241
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Cheap flight deals from Bulgaria to Chicago

Cheapest flights from Bulgaria to Chicago
Explore the most affordable flight options available from Bulgaria to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.

This oojo deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:45 pm
SOF
-
ORD
1 stop28h 25m
LOT
Wed 9/305:10 pm
ORD
-
SOF
1 stop16h 50m
LOT
Deal found 4/13$725
This oojo deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:25 am
SOF
-
ORD
1 stop22h 25m
LOT
Wed 9/169:50 pm
ORD
-
SOF
1 stop20h 05m
LOT
Deal found 4/15$727
This oojo deal was found by Cheapflights users on 4/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:25 am
SOF
-
ORD
1 stop22h 25m
LOT
Wed 9/239:50 pm
ORD
-
SOF
1 stop12h 10m
LOT
Deal found 4/14$728
This oojo deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/12:35 pm
SOF
-
ORD
1 stop32h 35m
LOT
Wed 9/309:50 pm
ORD
-
SOF
1 stop32h 00m
LOT
Deal found 4/17$732
This oojo deal was found by Cheapflights users on 4/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/152:35 pm
SOF
-
ORD
2 stops32h 30m
LOT
Sat 8/159:50 pm
ORD
-
SOF
1 stop20h 05m
LOT
Deal found 4/14$736
This FlightHub deal was found by Cheapflights users on 4/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/89:05 pm
SOF
-
ORD
1 stop20h 35m
Turkish Airlines
Thu 8/138:10 pm
ORD
-
SOF
1 stop34h 50m
Turkish Airlines
Deal found 4/13$739
This FlightHub deal was found by Cheapflights users on 4/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:50 pm
SOF
-
ORD
1 stop25h 50m
Turkish Airlines
Wed 8/198:10 pm
ORD
-
SOF
1 stop34h 50m
Turkish Airlines
Deal found 4/13$744
This Justfly.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:25 am
SOF
-
ORD
1 stop22h 25m
LOT
Thu 9/249:50 pm
ORD
-
SOF
1 stop32h 05m
LOT
Deal found 4/14$746
This KLM deal was found by Cheapflights users on 4/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:00 am
SOF
-
MDW
2 stops19h 31m
KLM
Tue 9/291:00 pm
MDW
-
SOF
2 stops17h 00m
KLM
Deal found 4/14$822
This Air France deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/308:30 am
VAR
-
ORD
1 stop14h 40m
Air France
Wed 5/61:36 pm
ORD
-
VAR
2 stops17h 54m
Air France
Deal found 4/15$849
This KLM deal was found by Cheapflights users on 4/13. 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 4/227:00 am
SOF
-
MDW
2 stops17h 26m
Multiple Airlines
Wed 8/192:00 pm
MDW
-
SOF
2 stops16h 00m
Multiple Airlines
Deal found 4/13$851
This KLM deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 am
SOF
-
MDW
2 stops18h 58m
KLM
Tue 5/261:22 pm
MDW
-
SOF
2 stops16h 38m
KLM
Deal found 4/15$892

Find flight deals from Bulgaria to Chicago

Keep the following information in mind while searching for Bulgaria to Chicago flight deals. Data was last updated April 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$725
(oojo)

One-way from

$350
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$793
Provider with most accurate pricing for Sofia-Chicago (CHI) flight deals.
Provider most trusted by Cheapflights users for Sofia-Chicago (CHI) flights.
From Bulgaria to Chicago (CHI)
One-way flight from Bulgaria to Chicago (CHI)
Highest demand for flights based on searches. 2% potential increase in price ($23 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in April 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bulgaria to Chicago that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2026.
Use the filters below to find and compare flights from Bulgaria to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 9/9

7:00 am-2:30 pm

1 stop15h 30m

Chicago O'Hare Intl

Wed 9/30

1:30 pm-2:00 pm

2 stops16h 30m

$805

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 6/23

9:05 pm-9:40 am

1 stop20h 35m

Chicago O'Hare Intl

Fri 7/31

11:25 am-8:45 am

1 stop13h 20m

$813

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Tue 9/8

7:00 am-6:31 pm

2 stops19h 31m

Chicago Midway

Tue 9/29

1:00 pm-2:00 pm

2 stops17h 00m

$822

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 6/22

3:50 pm-9:40 am

1 stop25h 50m

Chicago O'Hare Intl

Sat 8/1

8:10 pm-8:15 pm

1 stop16h 05m

$842

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 4/30

7:00 am-5:41 pm

2 stops18h 41m

Chicago O'Hare Intl

Thu 10/1

5:10 pm-2:00 pm

1 stop12h 50m

$843

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 4/29

7:00 am-6:13 pm

2 stops19h 13m

Chicago O'Hare Intl

Tue 9/22

1:30 pm-2:00 pm

2 stops16h 30m

$843

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 4/29

7:00 am-6:13 pm

2 stops19h 13m

Chicago O'Hare Intl

Wed 9/16

1:30 pm-2:00 pm

2 stops16h 30m

$848

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 4/29

7:00 am-4:18 pm

2 stops17h 18m

Chicago O'Hare Intl

Tue 9/15

1:30 pm-2:00 pm

2 stops16h 30m

$848

VarnaChicago

VAR - ORD

VARORD

Varna

Thu 4/30

8:30 am-3:10 pm

1 stop14h 40m

Chicago O'Hare Intl

Wed 5/6

1:36 pm-3:30 pm

2 stops17h 54m

$849

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 6/25

6:30 am-12:55 pm

1 stop14h 25m

Chicago O'Hare Intl

Tue 7/28

12:11 pm-12:10 pm

2 stops15h 59m

$854

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/12

Showing 1-10 of 47 resultsSorted by cheapest first
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5

Best time to book a flight from Bulgaria to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Bulgaria 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 Bulgaria to Chicago

What is the cheapest month to book a flight from Bulgaria to Chicago?

Currently, January is the cheapest month in which you can book a flight from Bulgaria to Chicago (average of $388). Flying from Bulgaria to Chicago in March is currently the most expensive (average of $647). 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.

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chicago. Reviews last updated April 17, 2026.
Peruse reviews from past customers who have flown with KLM,LOT, andUnited Airlines from Bulgaria to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Food

7.3

Boarding

7.8

Entertainment

7.2

Comfort

7.7

Crew

8.4

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Related info for your journey

Find useful and relevant information for your journey from Bulgaria to Chicago. 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 Bulgaria to Chicago?

    Airlines like Turkish Airlines, KLM, and Air France fly from Bulgaria to Chicago in about 14h 40m. The time it takes to get you to your destination can typically vary by up to 5h 55m. Airlines will cover a distance of 5324 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Bulgaria to Chicago one-way?

    $495 is the cheapest one-way deal found within the past few days, from Turkish Airlines. You may also be able to find cheap deals on Lufthansa and Austrian Airlines, with prices starting from $635 and $649, respectively.

  • What are the most popular routes from Bulgaria to Chicago?

  • Can I find deals for flights from Bulgaria to Chicago that include hotel bookings?

    Yes. In addition to deals on Bulgaria to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Bulgaria to Chicago?

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

  • Can I find deals for business class flights from Bulgaria to Chicago?

    Yes. Cheapflights offers flight deals from Bulgaria to Chicago 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 Bulgaria to Chicago?

    Currently, January is the cheapest month in which you can book a flight from Bulgaria to Chicago (average of $388). Flying from Bulgaria to Chicago in March is currently the most expensive (average of $647). 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

Traveling to a place near Chicago?

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Top 6 airlines flying from Bulgaria to Chicago

Discover the top 6 airlines that operate flights from Bulgaria to Chicago. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$616Average$801FlexibilityNo cancel feeOn-time77%
LOTCheapest$618Average$723FlexibilityNo cancel feeOn-time81%
KLMCheapest$631Average$766FlexibilityNo cancel feeOn-time75%
Austrian AirlinesCheapest$654Average$866FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$683Average$778FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$710Average$833FlexibilityNo cancel feeOn-time76%

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