HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Chicago

$342+ 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — CHI
Aug 17 — Aug 241
Sun 8/17
Sun 8/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Bulgaria to Chicago 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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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 Bulgaria to Chicago

Keep the following information in mind while searching for Bulgaria to Chicago flight deals. Data was last updated August 12, 2025.

Round-trip from

$648
(Air Canada)

One-way from

$342
(Mytrip)

Popular in

May

Cheapest in

November

Average price

$879
From Bulgaria to Chicago (CHI)
Search Deals
One-way flight from Bulgaria to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find 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 August 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:15 amSOF - ORD
1 stop14h 40mLufthansa
Wed 12/109:50 pmORD - SOF
1 stop12h 30mLufthansa
Deal found 8/12$648
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:15 amSOF - ORD
1 stop21h 50mUnited Airlines
Thu 3/126:04 pmORD - SOF
2 stops17h 01mUnited Airlines
Deal found 8/12$649
This Air Canada deal was found by Cheapflights users on 8/11. 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.
Mon 10/136:15 amSOF - ORD
2 stops22h 07mAir Canada
Sat 11/159:20 pmORD - SOF
2 stops36h 45mAir Canada
Deal found 8/11$650
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:15 amSOF - ORD
1 stop17h 05mUnited Airlines
Sat 3/73:55 pmORD - SOF
2 stops18h 20mUnited Airlines
Deal found 8/12$651
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:15 amSOF - ORD
2 stops23h 23mUnited Airlines
Sun 3/87:00 pmORD - SOF
1 stop20h 45mUnited Airlines
Deal found 8/12$652
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:05 amSOF - ORD
1 stop20h 20mUnited Airlines
Sun 11/29:50 pmORD - SOF
1 stop12h 30mUnited Airlines
Deal found 8/12$653
This United Airlines deal was found by Cheapflights users on 8/11. 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 10/58:00 amSOF - ORD
1 stop13h 20mUnited Airlines
Sat 11/159:50 pmORD - SOF
1 stop16h 55mUnited Airlines
Deal found 8/11$654
This Air Canada deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:15 amSOF - ORD
2 stops21h 15mAir Canada
Sun 3/84:40 pmORD - SOF
2 stops18h 40mAir Canada
Deal found 8/12$655
This Booking.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:55 pmSOF - ORD
1 stop26h 25mMultiple Airlines
Fri 11/149:50 pmORD - SOF
1 stop16h 55mMultiple Airlines
Deal found 8/11$656
This Air Canada deal was found by Cheapflights users on 8/11. 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.
Fri 10/176:15 amSOF - ORD
2 stops23h 52mAir Canada
Fri 11/142:00 pmORD - SOF
2 stops15h 50mAir Canada
Deal found 8/11$657
This Austrian Airlines deal was found by Cheapflights users on 8/11. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/78:00 amSOF - ORD
1 stop13h 20mAustrian Airlines
Fri 11/141:00 pmORD - SOF
2 stops20h 30mAustrian Airlines
Deal found 8/11$659
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/228:00 amSOF - ORD
1 stop13h 20mUnited Airlines
Wed 10/85:55 pmORD - SOF
2 stops15h 55mUnited Airlines
Deal found 8/12$660

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 August 12, 2025.
Use the filters below to find and compare flights from Bulgaria to Chicago that are best for you.

Fly from

Bulgaria

Fly to

Chicago

Route

Depart

Return

Price

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 10/15

6:15 am-2:55 pm

2 stops16h 40m

Chicago O'Hare Intl

Wed 10/29

4:50 pm-6:20 pm

2 stops18h 30m

$648

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 10/10

6:15 am-11:00 am

1 stop12h 45m

Chicago O'Hare Intl

Thu 11/13

6:20 pm-6:05 pm

2 stops15h 45m

$648

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 10/17

1:50 pm-7:29 pm

2 stops37h 39m

Chicago O'Hare Intl

Mon 11/10

3:35 pm-1:10 pm

2 stops13h 35m

$648

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 12/12

6:15 am-1:10 pm

1 stop14h 55m

Chicago O'Hare Intl

Wed 3/11

1:45 pm-1:55 pm

2 stops17h 10m

$649

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 12/8

6:15 am-11:18 am

2 stops37h 03m

Chicago O'Hare Intl

Sun 3/8

2:00 pm-6:20 pm

2 stops21h 20m

$649

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 12/13

6:15 am-3:20 pm

1 stop17h 05m

Chicago O'Hare Intl

Thu 3/12

6:04 pm-6:05 pm

2 stops17h 01m

$649

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 12/11

6:00 am-7:30 pm

2 stops21h 30m

Chicago O'Hare Intl

Sun 3/8

2:00 pm-6:20 pm

2 stops21h 20m

$649

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 12/13

6:15 am-3:20 pm

1 stop17h 05m

Chicago O'Hare Intl

Wed 3/11

1:45 pm-1:55 pm

2 stops17h 10m

$649

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 12/12

6:15 am-2:55 pm

2 stops16h 40m

Chicago O'Hare Intl

Sun 3/8

7:10 am-6:20 pm

2 stops28h 10m

$649

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 12/10

6:15 am-2:55 pm

2 stops16h 40m

Chicago O'Hare Intl

Sun 3/8

2:00 pm-6:20 pm

2 stops21h 20m

$649

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 40 results
1
2
3
4

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, August is the cheapest month in which you can book a flight from Bulgaria to Chicago (average of $245). Flying from Bulgaria to Chicago in March is currently the most expensive (average of $321). 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.

What is the cheapest time of day to fly from BG to CHI?

Find hourly flight availability from Bulgaria to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Bulgaria to Chicago as you normally would.

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 August 12, 2025.
Peruse reviews from past customers who have flown with KLM, LOT, and United 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.
KLM
7.8
Good
1,381 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,381 reviews
KLM
7.8
Good
1,381 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
LOT
7.6
Good
1,107 reviews
KLM
7.8
Good
1,381 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
United Airlines
7.4
Good
8,920 reviews
KLM
7.8
Good
1,381 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Turkish Airlines
7.3
Good
3,942 reviews
KLM
7.8
Good
1,381 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Lufthansa
6.8
Okay
7,317 reviews
KLM
7.8
Good
1,381 reviews

Comfort

7.7

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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.

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

    Most travelers choose Sofia - Chicago O'Hare Intl, Sofia - Chicago Midway or Varna - Chicago O'Hare Intl when deciding on the best route 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, August is the cheapest month in which you can book a flight from Bulgaria to Chicago (average of $245). Flying from Bulgaria to Chicago in March is currently the most expensive (average of $321). 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?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
Lansing
Hammond
Benton Harbor
Porter
Valparaiso
Chesterton

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.

Alternative routes for Bulgaria to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to O'Hare Intl flights
Frankfurt to O'Hare Intl flights
Charles de Gaulle to O'Hare Intl flights
Frederic Chopin to O'Hare Intl flights
Madrid to O'Hare Intl flights
Orly to O'Hare Intl flights
Gatwick to O'Hare Intl flights
Barcelona-El Prat to O'Hare Intl flights
Athens to O'Hare Intl flights
Munich to O'Hare Intl flights
London City to O'Hare Intl flights
Heathrow to Midway flights
Dublin to O'Hare Intl flights
Leonardo da Vinci/Fiumicino to O'Hare Intl flights
Malpensa to O'Hare Intl flights
Amsterdam to O'Hare Intl flights
Zurich to O'Hare Intl flights
Frederic Chopin to Midway flights
Krakow to O'Hare Intl flights
Charles de Gaulle to Midway flights
Bruxelles-National to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Beauvais-Tille to O'Hare Intl flights
Vienna to O'Hare Intl flights
Madrid to Midway flights
Barcelona-El Prat to Midway flights
Naples to O'Hare Intl flights
Vilnius to O'Hare Intl flights
Frankfurt-Hahn to O'Hare Intl flights
Bergamo to O'Hare Intl flights
Stansted to O'Hare Intl flights
Munich to Midway flights
Berlin to O'Hare Intl flights
Luton to O'Hare Intl flights
Vicenza to O'Hare Intl flights
Duesseldorf Intl to O'Hare Intl flights
Geneva to O'Hare Intl flights
Linate to O'Hare Intl flights
Duesseldorf Intl to Midway flights
Lisbon to O'Hare Intl flights

Top 7 airlines flying from Bulgaria to Chicago

Discover the top 7 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 August 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$460Average$713FlexibilityNo cancel feeOn-time75%
LOTCheapest$532Average$633FlexibilityNo cancel feeOn-time81%
Air FranceCheapest$560Average$672FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$576Average$876FlexibilityNo cancel feeOn-time78%
Turkish AirlinesCheapest$601Average$798FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$603Average$698FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$615Average$759FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.