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$495+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — CHI
Jun 28 — Jul 51
Sat 6/28
Sat 7/5
1 adult, Economy
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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 June 23, 2025.

Round-trip from

$663
(oojo)

One-way from

$495
(Kiwi.com)

Popular in

May

Cheapest in

November

Average price

$743
From Bulgaria to Chicago (CHI)
Search Deals
One-way flight from Bulgaria to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 23, 2025.

This oojo deal was found by Cheapflights users on 6/21. 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.
Mon 9/155:20 amSOF - ORD
1 stop22h 20mLOT
Tue 9/305:10 pmORD - SOF
2 stops24h 50mLOT
Deal found 6/21$663
This Gotogate deal was found by Cheapflights users on 6/22. 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.
Sun 7/136:00 pmSOF - ORD
1 stop27h 10mITA Airways
Sun 7/273:00 pmORD - SOF
1 stop13h 05mITA Airways
Deal found 6/22$670
This KLM deal was found by Cheapflights users on 6/22. 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.
Thu 9/187:00 amSOF - ORD
2 stops17h 34mMultiple Airlines
Sat 10/115:10 pmORD - SOF
1 stop12h 50mMultiple Airlines
Deal found 6/22$677
This United Airlines deal was found by Cheapflights users on 6/22. 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 9/186:15 amSOF - ORD
2 stops16h 40mUnited Airlines
Sat 10/111:15 pmORD - SOF
2 stops14h 45mUnited Airlines
Deal found 6/22$683
This Air France deal was found by Cheapflights users on 6/21. 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.
Mon 9/157:00 amSOF - ORD
2 stops18h 36mAir France
Tue 9/301:35 pmORD - SOF
2 stops16h 25mAir France
Deal found 6/21$687
This Air Canada deal was found by Cheapflights users on 6/21. 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.
Wed 9/106:15 amSOF - ORD
2 stops35h 36mAir Canada
Thu 12/117:20 amORD - SOF
2 stops21h 50mAir Canada
Deal found 6/21$690
This Lufthansa deal was found by Cheapflights users on 6/22. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:15 amSOF - ORD
1 stop21h 40mLufthansa
Fri 12/123:20 pmORD - SOF
1 stop14h 30mLufthansa
Deal found 6/22$692
This British Airways deal was found by Cheapflights users on 6/23. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/109:30 pmSOF - ORD
1 stop26h 25mBritish Airways
Sun 12/145:00 pmORD - SOF
1 stop15h 20mBritish Airways
Deal found 6/23$695
This Lufthansa deal was found by Cheapflights users on 6/23. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/89:15 amVAR - ORD
1 stop13h 40mLufthansa
Sun 7/273:35 pmORD - VAR
1 stop11h 55mLufthansa
Deal found 6/23$720
This KLM deal was found by Cheapflights users on 6/22. 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 9/27:00 amSOF - MDW
2 stops19h 37mKLM
Thu 12/112:00 pmMDW - SOF
2 stops16h 05mKLM
Deal found 6/22$721
This FlightHub deal was found by Cheapflights users on 6/21. 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 7/279:15 pmSOF - ORD
1 stop20h 25mTurkish Airlines
Sat 8/911:45 pmORD - SOF
1 stop31h 00mTurkish Airlines
Deal found 6/21$726
This Austrian Airlines deal was found by Cheapflights users on 6/23. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/91:35 pmVAR - ORD
1 stop31h 45mAustrian Airlines
Mon 7/283:55 pmORD - VAR
2 stops36h 50mAustrian Airlines
Deal found 6/23$731

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 June 23, 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

Mon 9/15

5:20 am-7:40 pm

1 stop22h 20m

Chicago O'Hare Intl

Tue 9/30

5:10 pm-5:55 pm

2 stops16h 45m

$663

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 7/13

6:00 pm-1:10 pm

1 stop27h 10m

Chicago O'Hare Intl

Sun 7/27

3:00 pm-12:05 pm

1 stop13h 05m

$670

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 9/18

7:00 am-4:34 pm

2 stops17h 34m

Chicago O'Hare Intl

Sat 10/11

5:10 pm-2:00 pm

1 stop12h 50m

$677

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 9/10

6:15 am-6:41 pm

2 stops20h 26m

Chicago O'Hare Intl

Sat 12/13

6:00 pm-6:20 pm

1 stop16h 20m

$681

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 9/15

7:00 am-5:36 pm

2 stops18h 36m

Chicago O'Hare Intl

Tue 9/30

1:35 pm-2:00 pm

2 stops16h 25m

$687

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 9/10

6:15 am-9:51 am

2 stops35h 36m

Chicago O'Hare Intl

Thu 12/11

7:20 am-1:10 pm

2 stops21h 50m

$690

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 9/4

6:15 am-7:55 pm

1 stop21h 40m

Chicago O'Hare Intl

Mon 12/15

3:20 pm-1:25 pm

1 stop14h 05m

$692

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 9/10

9:30 pm-6:15 pm

1 stop28h 45m

Chicago O'Hare Intl

Thu 12/11

5:00 pm-11:15 am

1 stop34h 15m

$694

VarnaChicago

VAR - ORD

VARORD

Varna

Tue 7/8

9:15 am-2:55 pm

1 stop13h 40m

Chicago O'Hare Intl

Sun 7/27

3:35 pm-11:30 am

1 stop11h 55m

$720

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Tue 9/2

7:00 am-6:37 pm

2 stops19h 37m

Chicago Midway

Thu 12/11

2:00 pm-2:05 pm

2 stops16h 05m

$721

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/22

Showing 1-10 of 42 results
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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 $320). 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 June 23, 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.

Rainfall in Chicago by month

Plan your trip to Chicago by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 June 23, 2025.
Read through reviews of airlines operating flights from Bulgaria to Chicago, such as KLM, LOT and Austrian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,365 reviews

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

Crew

8.4

Boarding

7.8

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
1,365 reviews
KLM
7.8
Good
1,365 reviews

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

Crew

8.4

Boarding

7.8

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
1,082 reviews
KLM
7.8
Good
1,365 reviews

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

Crew

8.4

Boarding

7.8

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.
Austrian Airlines
7.6
Good
805 reviews
KLM
7.8
Good
1,365 reviews

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

Crew

8.4

Boarding

7.8

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.
Air France
7.5
Good
1,470 reviews
KLM
7.8
Good
1,365 reviews

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

Crew

8.4

Boarding

7.8

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.
SWISS
7.5
Good
1,645 reviews
KLM
7.8
Good
1,365 reviews

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

Crew

8.4

Boarding

7.8

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 cheapest airlines to fly from Bulgaria to Chicago one-way?

    $586 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on Qatar Airways and Austrian Airlines, with prices starting from $606 and $651, respectively.

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

    Most travelers choose Sofia - Chicago O'Hare Intl, Sofia - Chicago Midway or Bourgas - 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 $320). 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 Bulgaria?

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

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Alternative routes for Bulgaria to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Bulgaria to Chicago

Discover the top 8 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 June 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$485Average$763FlexibilityNo cancel feeOn-time75%
LOTCheapest$532Average$628FlexibilityNo cancel feeOn-time81%
British AirwaysCheapest$546Average$864FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$560Average$672FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$576Average$881FlexibilityNo cancel feeOn-time78%
Turkish AirlinesCheapest$601Average$779FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$603Average$700FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$615Average$783FlexibilityNo cancel feeOn-time76%

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